move to GPL v3

- update gradle
- update readme files

LICENSE.md

@@ -1,282 +1,623 @@
 
                     GNU GENERAL PUBLIC LICENSE
-                       Version 2, June 1991
+                       Version 3, 29 June 2007
 
- Copyright (C) 1989, 1991 Free Software Foundation, Inc., <http://fsf.org/>
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
                             Preamble
 
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+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
 this License.
 
-  7. If, as a consequence of a court judgment or allegation of patent
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
-infringement or for any other reason (not limited to patent issues),
+patent license under the contributor's essential patent claims, to
-conditions are imposed on you (whether by court order, agreement or
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
 otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License.  If you cannot
+excuse you from the conditions of this License.  If you cannot convey a
-distribute so as to satisfy simultaneously your obligations under this
+covered work so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you
+License and any other pertinent obligations, then as a consequence you may
-may not distribute the Program at all.  For example, if a patent
+not convey it at all.  For example, if you agree to terms that obligate you
-license would not permit royalty-free redistribution of the Program by
+to collect a royalty for further conveying from those to whom you convey
-all those who receive copies directly or indirectly through you, then
+the Program, the only way you could satisfy both those terms and this
-the only way you could satisfy both it and this License would be to
+License would be to refrain entirely from conveying the Program.
-refrain entirely from distribution of the Program.
 
-If any portion of this section is held invalid or unenforceable under
+  13. Use with the GNU Affero General Public License.
-any particular circumstance, the balance of the section is intended to
-apply and the section as a whole is intended to apply in other
-circumstances.
 
-It is not the purpose of this section to induce you to infringe any
+  Notwithstanding any other provision of this License, you have
-patents or other property right claims or to contest validity of any
+permission to link or combine any covered work with a work licensed
-such claims; this section has the sole purpose of protecting the
+under version 3 of the GNU Affero General Public License into a single
-integrity of the free software distribution system, which is
+combined work, and to convey the resulting work.  The terms of this
-implemented by public license practices.  Many people have made
+License will continue to apply to the part which is the covered work,
-generous contributions to the wide range of software distributed
+but the special requirements of the GNU Affero General Public License,
-through that system in reliance on consistent application of that
+section 13, concerning interaction through a network will apply to the
-system; it is up to the author/donor to decide if he or she is willing
+combination as such.
-to distribute software through any other system and a licensee cannot
-impose that choice.
 
-This section is intended to make thoroughly clear what is believed to
+  14. Revised Versions of this License.
-be a consequence of the rest of this License.
 
-  8. If the distribution and/or use of the Program is restricted in
+  The Free Software Foundation may publish revised and/or new versions of
-certain countries either by patents or by copyrighted interfaces, the
+the GNU General Public License from time to time.  Such new versions will
-original copyright holder who places the Program under this License
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded.  In such case, this License incorporates
-the limitation as if written in the body of this License.
-
-  9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time.  Such new versions will
 be similar in spirit to the present version, but may differ in detail to
 address new problems or concerns.
 
-Each version is given a distinguishing version number.  If the Program
+  Each version is given a distinguishing version number.  If the
-specifies a version number of this License which applies to it and "any
+Program specifies that a certain numbered version of the GNU General
-later version", you have the option of following the terms and conditions
+Public License "or any later version" applies to it, you have the
-either of that version or of any later version published by the Free
+option of following the terms and conditions either of that numbered
-Software Foundation.  If the Program does not specify a version number of
+version or of any later version published by the Free Software
-this License, you may choose any version ever published by the Free Software
+Foundation.  If the Program does not specify a version number of the
-Foundation.
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
 
-  10. If you wish to incorporate parts of the Program into other free
+  If the Program specifies that a proxy can decide which future
-programs whose distribution conditions are different, write to the author
+versions of the GNU General Public License can be used, that proxy's
-to ask for permission.  For software which is copyrighted by the Free
+public statement of acceptance of a version permanently authorizes you
-Software Foundation, write to the Free Software Foundation; we sometimes
+to choose that version for the Program.
-make exceptions for this.  Our decision will be guided by the two goals
-of preserving the free status of all derivatives of our free software and
-of promoting the sharing and reuse of software generally.
 
-                            NO WARRANTY
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
 
-  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+  15. Disclaimer of Warranty.
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
 
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
-POSSIBILITY OF SUCH DAMAGES.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
 
                      END OF TERMS AND CONDITIONS
 
@@ -288,15 +629,15 @@ free software which everyone can redistribute and change under these terms.
 
   To do so, attach the following notices to the program.  It is safest
 to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
+state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
 
     <one line to give the program's name and a brief idea of what it does.>
     Copyright (C) <year>  <name of author>
 
-    This program is free software; you can redistribute it and/or modify
+    This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
+    the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
@@ -304,37 +645,31 @@ the "copyright" line and a pointer to where the full notice is found.
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
-    You should have received a copy of the GNU General Public License along
+    You should have received a copy of the GNU General Public License
-    with this program; if not, write to the Free Software Foundation, Inc.,
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 Also add information on how to contact you by electronic and paper mail.
 
-If the program is interactive, make it output a short notice like this
+  If the program does terminal interaction, make it output a short
-when it starts in an interactive mode:
+notice like this when it starts in an interactive mode:
 
-    Gnomovision version 69, Copyright (C) year name of author
+    {project}  Copyright (C) {year}  {fullname}
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
     This is free software, and you are welcome to redistribute it
     under certain conditions; type `show c' for details.
 
 The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, the commands you use may
+parts of the General Public License.  Of course, your program's commands
-be called something other than `show w' and `show c'; they could even be
+might be different; for a GUI interface, you would use an "about box".
-mouse-clicks or menu items--whatever suits your program.
 
-You should also get your employer (if you work as a programmer) or your
+  You should also get your employer (if you work as a programmer) or school,
-school, if any, to sign a "copyright disclaimer" for the program, if
+if any, to sign a "copyright disclaimer" for the program, if necessary.
-necessary.  Here is a sample; alter the names:
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
 
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  The GNU General Public License does not permit incorporating your program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+into proprietary programs.  If your program is a subroutine library, you
-
+may consider it more useful to permit linking proprietary applications with
-  {signature of Ty Coon}, 1 April 1989
+the library.  If this is what you want to do, use the GNU Lesser General
-  Ty Coon, President of Vice
+Public License instead of this License.  But first, please read
-
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
-This General Public License does not permit incorporating your program into
-proprietary programs.  If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Lesser General
-Public License instead of this License.

augmented-images/README.md

@@ -1,6 +1,6 @@
 # Augmented images
 
-ARCore and Sceneform made with Augmented Image to show a virtual earth.
+ARCore and Sceneform project made with Augmented Image to show a virtual earth.
 
 ## Credit
 

augmented-images/build.gradle

@@ -7,7 +7,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.1'
+        classpath 'com.android.tools.build:gradle:3.3.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath 'com.google.ar.sceneform:plugin:1.6.0'
 

augmented-images/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,6 @@
+#Sat Feb 02 18:25:35 CET 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip

cloud-anchors/.gitignore

@@ -0,0 +1,11 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches/build_file_checksums.ser
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild

cloud-anchors/.idea/codeStyles/Project.xml

@@ -0,0 +1,35 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <JetCodeStyleSettings>
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </JetCodeStyleSettings>
+    <Objective-C-extensions>
+      <file>
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Import" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Macro" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Typedef" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Enum" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Constant" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Global" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Struct" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="FunctionPredecl" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Function" />
+      </file>
+      <class>
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Property" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Synthesize" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="InitMethod" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="StaticMethod" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="InstanceMethod" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="DeallocMethod" />
+      </class>
+      <extensions>
+        <pair source="cpp" header="h" fileNamingConvention="NONE" />
+        <pair source="c" header="h" fileNamingConvention="NONE" />
+      </extensions>
+    </Objective-C-extensions>
+    <codeStyleSettings language="kotlin">
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </codeStyleSettings>
+  </code_scheme>
+</component>

cloud-anchors/.idea/codeStyles/codeStyleConfig.xml

@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+  </state>
+</component>

cloud-anchors/.idea/copyright/GPL_v__2_0.xml

@@ -0,0 +1,6 @@
+<component name="CopyrightManager">
+  <copyright>
+    <option name="notice" value="Copyright (c) &amp;#36;today.year, norangebit &#10;&#10;This file is part of augmented-images.&#10;&#10;     &amp;#36;project.name is free software: you can redistribute it and/or modify&#10;     it under the terms of the GNU General Public License as published by&#10;     the Free Software Foundation, either version 3 of the License, or&#10;     (at your option) any later version.&#10;&#10;     &amp;#36;project.name is distributed in the hope that it will be useful,&#10;     but WITHOUT ANY WARRANTY; without even the implied warranty of&#10;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the&#10;     GNU General Public License for more details.&#10;&#10;     You should have received a copy of the GNU General Public License&#10;     along with &amp;#36;project.name.  If not, see &lt;http://www.gnu.org/licenses/&gt;&#10;" />
+    <option name="myName" value="GPL v. 2.0" />
+  </copyright>
+</component>

cloud-anchors/.idea/copyright/profiles_settings.xml

@@ -0,0 +1,7 @@
+<component name="CopyrightManager">
+  <settings>
+    <module2copyright>
+      <element module="All" copyright="GPL v. 2.0" />
+    </module2copyright>
+  </settings>
+</component>

cloud-anchors/.idea/gradle.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>

cloud-anchors/.idea/misc.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CMakeSettings">
+    <configurations>
+      <configuration PROFILE_NAME="Debug" CONFIG_NAME="Debug" />
+    </configurations>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>

cloud-anchors/.idea/runConfigurations.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.AllInPackageGradleConfigurationProducer" />
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestClassGradleConfigurationProducer" />
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestMethodGradleConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>

cloud-anchors/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>

cloud-anchors/README.md

@@ -0,0 +1,10 @@
+# Cloud Anchors 
+
+ARCore and Sceneform project made with Cloud Anchors to build a cross devices AR experience
+
+## Credit
+
+This app uses [tulip pot][tulip] model by [Mike M][mike].
+
+[tulip]: https://poly.google.com/view/0zkiY3qaSRP
+[mike]: https://poly.google.com/user/2U5vPocDfmr

cloud-anchors/app/.gitignore

@@ -0,0 +1 @@
+/build

cloud-anchors/app/build.gradle

@@ -0,0 +1,48 @@
+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'com.google.gms.google-services'
+apply plugin: 'kotlin-android-extensions'
+apply plugin: 'com.google.ar.sceneform.plugin'
+
+android {
+    compileSdkVersion 28
+    defaultConfig {
+        applicationId "it.norangeb.cloudanchors"
+        minSdkVersion 26
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'com.android.support:appcompat-v7:28.0.0'
+    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+    implementation 'com.android.support:design:28.0.0'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.android.support.test:runner:1.0.2'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    implementation "com.google.ar.sceneform.ux:sceneform-ux:1.6.0"
+    implementation 'com.google.firebase:firebase-core:16.0.6'
+    implementation 'com.google.firebase:firebase-firestore:17.1.5'
+}
+
+
+
+sceneform.asset('sampledata/model.obj',
+        'default',
+        'sampledata/model.sfa',
+        'src/main/assets/model')

cloud-anchors/app/google-services.json

@@ -0,0 +1,55 @@
+{
+  "project_info": {
+    "project_number": "774470937880",
+    "firebase_url": "https://open-ar.firebaseio.com",
+    "project_id": "open-ar",
+    "storage_bucket": "open-ar.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:774470937880:android:903e4220e58d36fa",
+        "android_client_info": {
+          "package_name": "it.norangeb.cloudanchors"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "774470937880-87uo07o9f9k7r3toc8r65botu8npfmg0.apps.googleusercontent.com",
+          "client_type": 1,
+          "android_info": {
+            "package_name": "it.norangeb.cloudanchors",
+            "certificate_hash": "7096e843f30ba2d3bb53525799ba9e5525e3544b"
+          }
+        },
+        {
+          "client_id": "774470937880-eam6gr89vqgqannuaah2vi86m18hqmr3.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyCkJohrCQfBuEQAFbnm6eW1hStY7scHuJQ"
+        }
+      ],
+      "services": {
+        "analytics_service": {
+          "status": 1
+        },
+        "appinvite_service": {
+          "status": 2,
+          "other_platform_oauth_client": [
+            {
+              "client_id": "774470937880-eam6gr89vqgqannuaah2vi86m18hqmr3.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        },
+        "ads_service": {
+          "status": 2
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}

cloud-anchors/app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

cloud-anchors/app/sampledata/materials.mtl

@@ -0,0 +1,24 @@
+newmtl mat14
+  Kd 1.00 0.34 0.13
+
+newmtl mat8
+  Kd 0.96 0.26 0.21
+
+newmtl mat12
+  Kd 1.00 0.92 0.23
+
+newmtl mat10
+  Kd 0.30 0.69 0.31
+
+newmtl mat20
+  Kd 0.47 0.33 0.28
+
+newmtl mat24
+  Ka 0.58 0.65 1.00
+  Kd 0.92 0.95 0.94
+  Ks 1 1 1
+  illum 9
+  Ns 300
+  d 0.4
+  Ni 1.5
+

cloud-anchors/app/sampledata/model.sfa

@@ -0,0 +1,173 @@
+{
+  materials: [
+    {
+      name: 'mat14',
+      parameters: [
+        {
+          baseColor: null,
+        },
+        {
+          baseColorTint: [
+            1,
+            0.34000000000000002,
+            0.13,
+            1,
+          ],
+        },
+        {
+          metallic: 0,
+        },
+        {
+          roughness: 1,
+        },
+        {
+          opacity: null,
+        },
+      ],
+      source: 'build/sceneform_sdk/default_materials/obj_material.sfm',
+    },
+    {
+      name: 'mat8',
+      parameters: [
+        {
+          baseColor: null,
+        },
+        {
+          baseColorTint: [
+            0.95999999999999996,
+            0.26000000000000001,
+            0.20999999999999999,
+            1,
+          ],
+        },
+        {
+          metallic: 0,
+        },
+        {
+          roughness: 1,
+        },
+        {
+          opacity: null,
+        },
+      ],
+      source: 'build/sceneform_sdk/default_materials/obj_material.sfm',
+    },
+    {
+      name: 'mat12',
+      parameters: [
+        {
+          baseColor: null,
+        },
+        {
+          baseColorTint: [
+            1,
+            0.92000000000000004,
+            0.23000000000000001,
+            1,
+          ],
+        },
+        {
+          metallic: 0,
+        },
+        {
+          roughness: 1,
+        },
+        {
+          opacity: null,
+        },
+      ],
+      source: 'build/sceneform_sdk/default_materials/obj_material.sfm',
+    },
+    {
+      name: 'mat10',
+      parameters: [
+        {
+          baseColor: null,
+        },
+        {
+          baseColorTint: [
+            0.29999999999999999,
+            0.68999999999999995,
+            0.31,
+            1,
+          ],
+        },
+        {
+          metallic: 0,
+        },
+        {
+          roughness: 1,
+        },
+        {
+          opacity: null,
+        },
+      ],
+      source: 'build/sceneform_sdk/default_materials/obj_material.sfm',
+    },
+    {
+      name: 'mat20',
+      parameters: [
+        {
+          baseColor: null,
+        },
+        {
+          baseColorTint: [
+            0.46999999999999997,
+            0.33000000000000002,
+            0.28000000000000003,
+            1,
+          ],
+        },
+        {
+          metallic: 0,
+        },
+        {
+          roughness: 1,
+        },
+        {
+          opacity: null,
+        },
+      ],
+      source: 'build/sceneform_sdk/default_materials/obj_material.sfm',
+    },
+    {
+      name: 'mat24',
+      parameters: [
+        {
+          baseColor: null,
+        },
+        {
+          baseColorTint: [
+            0.92000000000000004,
+            0.94999999999999996,
+            0.93999999999999995,
+            1,
+          ],
+        },
+        {
+          metallic: 0,
+        },
+        {
+          roughness: 1,
+        },
+        {
+          opacity: 0.40000000000000002,
+        },
+      ],
+      source: 'build/sceneform_sdk/default_materials/obj_material.sfm',
+    },
+  ],
+  model: {
+    attributes: [
+      'Position',
+      'TexCoord',
+      'Orientation',
+    ],
+    collision: {},
+    file: 'sampledata/model.obj',
+    name: 'model',
+    recenter: 'root',
+    scale: 0.30775799999999999,
+  },
+  version: '0.54:1',
+}

cloud-anchors/app/src/androidTest/java/it/norangeb/cloudanchors/ExampleInstrumentedTest.kt

@@ -0,0 +1,24 @@
+package it.norangeb.cloudanchors
+
+import android.support.test.InstrumentationRegistry
+import android.support.test.runner.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getTargetContext()
+        assertEquals("it.norangeb.cloudanchors", appContext.packageName)
+    }
+}

cloud-anchors/app/src/main/AndroidManifest.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="it.norangeb.cloudanchors">
+
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-feature android:name="android.hardware.camera.ar" android:required="true" />
+
+
+    <application
+            android:allowBackup="true"
+            android:icon="@mipmap/ic_launcher"
+            android:label="@string/app_name"
+            android:roundIcon="@mipmap/ic_launcher_round"
+            android:supportsRtl="true"
+            android:theme="@style/AppTheme">
+
+        <meta-data android:name="com.google.ar.core" android:value="required" />
+        <meta-data
+                android:name="com.google.android.ar.API_KEY"
+                android:value="API KEY" />
+
+        <activity
+                android:name=".MainActivity"
+                android:label="@string/app_name"
+                android:theme="@style/AppTheme.NoActionBar">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

cloud-anchors/app/src/main/java/it/norangeb/cloudanchors/CloudAnchorsHelper.kt

@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2019, norangebit
+ *
+ * This file is part of cloud-anchors.
+ *
+ *      cloud-anchors is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License, or
+ *      (at your option) any later version.
+ *
+ *      cloud-anchors is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with cloud-anchors.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+package it.norangeb.cloudanchors
+
+import com.google.firebase.firestore.FirebaseFirestore
+import com.google.firebase.firestore.SetOptions
+
+class CloudAnchorsHelper {
+    private val fireStoreDb = FirebaseFirestore.getInstance()
+    private var nextCode = 0
+
+    init {
+        fireStoreDb.collection(COLLECTION)
+            .document(DOCUMENT)
+            .get()
+            .addOnSuccessListener {
+                val nCode = it.data?.get(NEXT_CODE) ?: return@addOnSuccessListener
+                nextCode = nCode.toString().toInt()
+            }
+    }
+
+    fun getShortCode(cloudAnchorId: String): Int {
+        fireStoreDb.collection(COLLECTION)
+            .document(DOCUMENT)
+            .set(
+                mapOf(Pair(nextCode.toString(), cloudAnchorId)),
+                SetOptions.merge())
+        uploadNextCode(nextCode+1)
+        return nextCode++
+    }
+
+    private fun uploadNextCode(nextCode: Int) {
+        fireStoreDb.collection(COLLECTION)
+            .document(DOCUMENT)
+            .set(
+                mapOf(Pair(NEXT_CODE, nextCode)),
+                SetOptions.merge()
+            )
+    }
+
+    fun getCloudAnchorId(
+        shortCode: Int,
+        onSuccess: (String) -> Unit
+    ) {
+        fireStoreDb.collection(COLLECTION)
+            .document(DOCUMENT)
+            .get()
+            .addOnSuccessListener {
+                val x = it.data?.get(shortCode.toString()) as String
+                onSuccess(x)
+            }
+    }
+
+    companion object {
+        private const val COLLECTION = "short_codes"
+        private const val DOCUMENT = "short_codes_doc"
+        private const val NEXT_CODE = "next_short_code"
+    }
+}

cloud-anchors/app/src/main/java/it/norangeb/cloudanchors/CloudArFragment.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2019, norangebit
+ *
+ * This file is part of cloud-anchors.
+ *
+ *      cloud-anchors is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License, or
+ *      (at your option) any later version.
+ *
+ *      cloud-anchors is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with cloud-anchors.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+package it.norangeb.cloudanchors
+
+import com.google.ar.core.Config
+import com.google.ar.core.Session
+import com.google.ar.sceneform.ux.ArFragment
+
+class CloudArFragment: ArFragment(){
+    override fun getSessionConfiguration(session: Session?): Config {
+        val config = super.getSessionConfiguration(session)
+        config.cloudAnchorMode = Config.CloudAnchorMode.ENABLED
+        return config
+    }
+}

cloud-anchors/app/src/main/java/it/norangeb/cloudanchors/MainActivity.kt

@@ -0,0 +1,154 @@
+/*
+ * Copyright (c) 2019, norangebit
+ *
+ * This file is part of cloud-anchors.
+ *
+ *      cloud-anchors is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License, or
+ *      (at your option) any later version.
+ *
+ *      cloud-anchors is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with cloud-anchors.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+package it.norangeb.cloudanchors
+
+import android.net.Uri
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+import android.util.Log
+import android.view.MotionEvent
+import android.view.View
+import android.widget.Toast
+import com.google.ar.core.*
+import com.google.ar.sceneform.FrameTime
+import com.google.ar.core.Anchor
+
+
+class MainActivity : AppCompatActivity() {
+    private val TAG = MainActivity::class.java.canonicalName
+
+    private lateinit var arFragment: CloudArFragment
+    private val cloudAnchorsHelper = CloudAnchorsHelper()
+    private var cloudAnchorState = CloudAnchorState.NONE
+    private var cloudAnchor: Anchor? = null
+        set(value) {
+            field?.detach()
+            field = value
+        }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        if (!checkIsSupportedDeviceOrFinish(this, TAG))
+            return
+
+        setContentView(R.layout.activity_main)
+
+        arFragment = supportFragmentManager.findFragmentById(R.id.ar_fragment) as CloudArFragment
+
+        arFragment.setOnTapArPlaneListener(this::addModel)
+
+        arFragment.arSceneView.scene
+            .addOnUpdateListener(this::checkCloudAnchor)
+    }
+
+    private fun addModel(hitResult: HitResult, plane: Plane, motionEvent: MotionEvent) {
+        if (cloudAnchorState != CloudAnchorState.NONE)
+            return
+
+        cloudAnchor = arFragment.arSceneView.session
+            .hostCloudAnchor(hitResult.createAnchor())
+
+        cloudAnchorState = CloudAnchorState.HOSTING
+
+        buildRenderable(this, Uri.parse("model.sfb")) {
+            addTransformableNodeToScene(
+                arFragment,
+                cloudAnchor ?: return@buildRenderable,
+                it
+            )
+        }
+    }
+
+    private fun checkCloudAnchor(frameTime: FrameTime) {
+        if (cloudAnchorState != CloudAnchorState.HOSTING
+            && cloudAnchorState != CloudAnchorState.RESOLVING
+        )
+            return
+
+        val cloudState = cloudAnchor?.cloudAnchorState ?: return
+
+        if (cloudState.isError) {
+            toastError()
+            cloudAnchorState = CloudAnchorState.NONE
+            return
+        }
+
+        if (cloudState != Anchor.CloudAnchorState.SUCCESS)
+            return
+
+        if (cloudAnchorState == CloudAnchorState.HOSTING)
+            checkHosting()
+        else
+            checkResolving()
+    }
+
+    private fun checkResolving() {
+        Toast.makeText(this, "Anchor resolved!", Toast.LENGTH_LONG)
+            .show()
+        cloudAnchorState = CloudAnchorState.RESOLVED
+    }
+
+    private fun checkHosting() {
+        val cAnchor = cloudAnchor ?: return
+
+        val shortCode = cloudAnchorsHelper.getShortCode(cAnchor.cloudAnchorId)
+
+        Toast.makeText(this, "Anchor hosted with code $shortCode", Toast.LENGTH_LONG)
+            .show()
+        Log.d("NORANGEBIT", "$shortCode")
+
+        cloudAnchorState = CloudAnchorState.HOSTED
+    }
+
+    private fun toastError() =
+        Toast.makeText(this, "Error", Toast.LENGTH_LONG)
+            .show()
+
+    private fun onResolveOkPressed(dialogValue: String) {
+        val shortCode = dialogValue.toInt()
+        cloudAnchorsHelper.getCloudAnchorId(shortCode) {
+            cloudAnchor = arFragment.arSceneView.session
+                .resolveCloudAnchor(it)
+
+            buildRenderable(this, Uri.parse("model.sfb")) {
+                val anchor = cloudAnchor ?: return@buildRenderable
+                addTransformableNodeToScene(arFragment, anchor, it)
+                cloudAnchorState = CloudAnchorState.RESOLVING
+            }
+        }
+    }
+
+    fun onClearClick(view: View) {
+        cloudAnchor?.detach()
+        cloudAnchor = null
+        cloudAnchorState = CloudAnchorState.NONE
+    }
+
+    fun onResolveClick(view: View) {
+        if (cloudAnchor != null)
+            return
+
+        val dialog = ResolveDialogFragment()
+        dialog.setOkListener(this::onResolveOkPressed)
+        dialog.show(supportFragmentManager, "Resolve")
+    }
+}

cloud-anchors/app/src/main/java/it/norangeb/cloudanchors/ResolveDialogFragment.java

@@ -0,0 +1,77 @@
+ /**
+ * This class is made by Google
+ *
+ * visit https://codelabs.developers.google.com/codelabs/arcore-cloud-anchors/#3
+ */
+
+package it.norangeb.cloudanchors;
+
+ import android.app.AlertDialog;
+ import android.app.Dialog;
+ import android.content.Context;
+ import android.os.Bundle;
+ import android.support.v4.app.DialogFragment;
+ import android.text.Editable;
+ import android.text.InputType;
+ import android.text.InputFilter;
+ import android.widget.EditText;
+ import android.widget.LinearLayout;
+ import android.widget.LinearLayout.LayoutParams;
+
+ /** A DialogFragment for the Resolve Dialog Box. */
+ public class ResolveDialogFragment extends DialogFragment {
+
+     // The maximum number of characters that can be entered in the EditText.
+     private static final int MAX_FIELD_LENGTH = 10;
+
+     interface OkListener {
+         /** This method is called by the dialog box when its OK button is pressed. */
+         void onOkPressed(String dialogValue);
+     }
+
+     private OkListener okListener;
+     private EditText shortCodeField;
+
+     /** Sets a listener that is invoked when the OK button on this dialog is pressed. */
+     void setOkListener(OkListener okListener) {
+         this.okListener = okListener;
+     }
+
+     /**
+      * Creates a simple layout for the dialog. This contains a single user-editable text field whose
+      * input type is retricted to numbers only, for simplicity.
+      */
+     private LinearLayout getDialogLayout() {
+         Context context = getContext();
+         LinearLayout layout = new LinearLayout(context);
+         shortCodeField = new EditText(context);
+         // Only allow numeric input.
+         shortCodeField.setInputType(InputType.TYPE_CLASS_NUMBER);
+         shortCodeField.setLayoutParams(
+                 new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
+         // Set a max length for the input text to avoid overflows when parsing.
+         shortCodeField.setFilters(new InputFilter[] {new InputFilter.LengthFilter(MAX_FIELD_LENGTH)});
+         layout.addView(shortCodeField);
+         layout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
+         return layout;
+     }
+
+     @Override
+     public Dialog onCreateDialog(Bundle savedInstanceState) {
+         AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+         builder
+                 .setView(getDialogLayout())
+                 .setTitle(R.string.resolve_dialog_title)
+                 .setPositiveButton(
+                         R.string.ok,
+                         (dialog, which) -> {
+                             Editable shortCodeText = shortCodeField.getText();
+                             if (okListener != null && shortCodeText != null && shortCodeText.length() > 0) {
+                                 // Invoke the callback with the current checked item.
+                                 okListener.onOkPressed(shortCodeText.toString());
+                             }
+                         })
+                 .setNegativeButton(R.string.cancel, (dialog, which) -> {});
+         return builder.create();
+     }
+ }

cloud-anchors/app/src/main/java/it/norangeb/cloudanchors/Util.kt

@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2019, norangebit
+ *
+ * This file is part of cloud-anchors.
+ *
+ *      cloud-anchors is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License, or
+ *      (at your option) any later version.
+ *
+ *      cloud-anchors is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with cloud-anchors.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+package it.norangeb.cloudanchors
+
+import android.annotation.SuppressLint
+import android.app.Activity
+import android.app.ActivityManager
+import android.content.Context
+import android.net.Uri
+import android.os.Build
+import android.util.Log
+import android.widget.Toast
+import com.google.ar.core.Anchor
+import com.google.ar.sceneform.AnchorNode
+import com.google.ar.sceneform.Node
+import com.google.ar.sceneform.rendering.*
+import com.google.ar.sceneform.ux.ArFragment
+import com.google.ar.sceneform.ux.TransformableNode
+
+private val MIN_OPENGL_VERSION = 3.0
+
+@SuppressLint("ObsoleteSdkInt")
+fun checkIsSupportedDeviceOrFinish(activity: Activity, tag: String): Boolean {
+    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
+        Log.e(tag, "Sceneform requires Android N or later")
+        Toast.makeText(activity, "Sceneform requires Android N or later", Toast.LENGTH_LONG).show()
+        activity.finish()
+        return false
+    }
+    val openGlVersionString = (activity.getSystemService(Context.ACTIVITY_SERVICE) as ActivityManager)
+        .deviceConfigurationInfo
+        .glEsVersion
+    if (java.lang.Double.parseDouble(openGlVersionString) < MIN_OPENGL_VERSION) {
+        Log.e(tag, "Sceneform requires OpenGL ES 3.0 later")
+        Toast.makeText(activity, "Sceneform requires OpenGL ES 3.0 or later", Toast.LENGTH_LONG)
+            .show()
+        activity.finish()
+        return false
+    }
+    return true
+}
+
+fun buildRenderable(
+    context: Context,
+    model: Uri,
+    onSuccess: (renderable: Renderable) -> Unit
+) {
+    ModelRenderable.builder()
+        .setSource(context, model)
+        .build()
+        .thenAccept(onSuccess)
+        .exceptionally {
+            Log.e("SCENEFORM", "unable to load model", it)
+            return@exceptionally null
+        }
+}
+
+
+fun addTransformableNodeToScene(arFragment: ArFragment, anchor: Anchor, renderable: Renderable): Node {
+    val anchorNode = AnchorNode(anchor)
+    val transformableNode = TransformableNode(arFragment.transformationSystem)
+    transformableNode.renderable = renderable
+    transformableNode.setParent(anchorNode)
+    arFragment.arSceneView.scene.addChild(anchorNode)
+    transformableNode.select()
+    return transformableNode
+}
+
+enum class CloudAnchorState {
+    NONE,
+    HOSTING,
+    HOSTED,
+    RESOLVING,
+    RESOLVED
+}

cloud-anchors/app/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -0,0 +1,34 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:aapt="http://schemas.android.com/aapt"
+        android:width="108dp"
+        android:height="108dp"
+        android:viewportHeight="108"
+        android:viewportWidth="108">
+    <path
+            android:fillType="evenOdd"
+            android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
+            android:strokeColor="#00000000"
+            android:strokeWidth="1">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                    android:endX="78.5885"
+                    android:endY="90.9159"
+                    android:startX="48.7653"
+                    android:startY="61.0927"
+                    android:type="linear">
+                <item
+                        android:color="#44000000"
+                        android:offset="0.0"/>
+                <item
+                        android:color="#00000000"
+                        android:offset="1.0"/>
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+            android:fillColor="#FFFFFF"
+            android:fillType="nonZero"
+            android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
+            android:strokeColor="#00000000"
+            android:strokeWidth="1"/>
+</vector>

cloud-anchors/app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:height="108dp"
+        android:width="108dp"
+        android:viewportHeight="108"
+        android:viewportWidth="108">
+    <path android:fillColor="#008577"
+          android:pathData="M0,0h108v108h-108z"/>
+    <path android:fillColor="#00000000" android:pathData="M9,0L9,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,0L19,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M29,0L29,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M39,0L39,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M49,0L49,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M59,0L59,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M69,0L69,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M79,0L79,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M89,0L89,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M99,0L99,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,9L108,9"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,19L108,19"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,29L108,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,39L108,39"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,49L108,49"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,59L108,59"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,69L108,69"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,79L108,79"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,89L108,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,99L108,99"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,29L89,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,39L89,39"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,49L89,49"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,59L89,59"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,69L89,69"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,79L89,79"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M29,19L29,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M39,19L39,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M49,19L49,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M59,19L59,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M69,19L69,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M79,19L79,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+</vector>

cloud-anchors/app/src/main/res/layout/activity_main.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (c) 2019, norangebit
+  ~
+  ~ This file is part of cloud-anchors.
+  ~
+  ~      cloud-anchors is free software: you can redistribute it and/or modify
+  ~      it under the terms of the GNU General Public License as published by
+  ~      the Free Software Foundation, either version 3 of the License, or
+  ~      (at your option) any later version.
+  ~
+  ~      cloud-anchors is distributed in the hope that it will be useful,
+  ~      but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~      GNU General Public License for more details.
+  ~
+  ~      You should have received a copy of the GNU General Public License
+  ~      along with cloud-anchors.  If not, see <http://www.gnu.org/licenses/>
+  ~
+  -->
+
+<android.support.design.widget.CoordinatorLayout
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        xmlns:tools="http://schemas.android.com/tools"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        tools:context=".MainActivity">
+
+    <include layout="@layout/content_main" android:id="@+id/include"/>
+    <Button
+            android:text="@string/clear"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content" android:id="@+id/clear_btn" app:layout_anchorGravity="left|bottom"
+            app:layout_anchor="@+id/include" android:onClick="onClearClick"/>
+    <Button
+            android:text="@string/resolve"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content" android:id="@+id/resolve_btn" app:layout_anchorGravity="right|bottom"
+            app:layout_anchor="@+id/include" android:onClick="onResolveClick"/>
+
+</android.support.design.widget.CoordinatorLayout>

cloud-anchors/app/src/main/res/layout/content_main.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (c) 2019, norangebit
+  ~
+  ~ This file is part of cloud-anchors.
+  ~
+  ~      cloud-anchors is free software: you can redistribute it and/or modify
+  ~      it under the terms of the GNU General Public License as published by
+  ~      the Free Software Foundation, either version 3 of the License, or
+  ~      (at your option) any later version.
+  ~
+  ~      cloud-anchors is distributed in the hope that it will be useful,
+  ~      but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~      GNU General Public License for more details.
+  ~
+  ~      You should have received a copy of the GNU General Public License
+  ~      along with cloud-anchors.  If not, see <http://www.gnu.org/licenses/>
+  ~
+  -->
+
+<FrameLayout
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:tools="http://schemas.android.com/tools"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior"
+        tools:showIn="@layout/activity_main"
+        tools:context=".MainActivity">
+
+    <fragment
+            android:layout_width="match_parent"
+            android:layout_height="match_parent" android:name="it.norangeb.cloudanchors.CloudArFragment"
+            android:id="@+id/ar_fragment"/>
+</FrameLayout>

cloud-anchors/app/src/main/res/menu/menu_main.xml

@@ -0,0 +1,9 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+      xmlns:app="http://schemas.android.com/apk/res-auto"
+      xmlns:tools="http://schemas.android.com/tools"
+      tools:context="it.norangeb.cloudanchors.MainActivity">
+    <item android:id="@+id/action_settings"
+          android:title="@string/action_settings"
+          android:orderInCategory="100"
+          app:showAsAction="never"/>
+</menu>

cloud-anchors/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

cloud-anchors/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

cloud-anchors/app/src/main/res/values/colors.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#008577</color>
+    <color name="colorPrimaryDark">#00574B</color>
+    <color name="colorAccent">#D81B60</color>
+</resources>

cloud-anchors/app/src/main/res/values/dimens.xml

@@ -0,0 +1,3 @@
+<resources>
+    <dimen name="fab_margin">16dp</dimen>
+</resources>

cloud-anchors/app/src/main/res/values/strings.xml

@@ -0,0 +1,9 @@
+<resources>
+    <string name="app_name">cloud anchors</string>
+    <string name="action_settings">Settings</string>
+    <string name="clear">Clear</string>
+    <string name="resolve">resolve</string>
+    <string name="ok">OK</string>
+    <string name="cancel">Cancel</string>
+    <string name="resolve_dialog_title">Resolve Anchor</string>
+</resources>

cloud-anchors/app/src/main/res/values/styles.xml

@@ -0,0 +1,17 @@
+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+    </style>
+    <style name="AppTheme.NoActionBar">
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+    </style>
+    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar"/>
+    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light"/>
+
+</resources>

cloud-anchors/app/src/test/java/it/norangeb/cloudanchors/ExampleUnitTest.kt

@@ -0,0 +1,17 @@
+package it.norangeb.cloudanchors
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}

cloud-anchors/build.gradle

@@ -0,0 +1,29 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+    ext.kotlin_version = '1.3.11'
+    repositories {
+        google()
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.3.0'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath 'com.google.ar.sceneform:plugin:1.6.0'
+        classpath 'com.google.gms:google-services:4.2.0' // google-services plugin
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        jcenter()
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

cloud-anchors/gradle.properties

@@ -0,0 +1,15 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx1536m
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official

cloud-anchors/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Wed Jan 16 21:40:50 CET 2019
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip

cloud-anchors/gradlew

@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"

cloud-anchors/gradlew.bat

@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

cloud-anchors/settings.gradle

@@ -0,0 +1 @@
+include ':app'

collision/.gitignore

@@ -0,0 +1,13 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild

collision/.idea/codeStyles/Project.xml

@@ -0,0 +1,35 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <JetCodeStyleSettings>
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </JetCodeStyleSettings>
+    <Objective-C-extensions>
+      <file>
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Import" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Macro" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Typedef" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Enum" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Constant" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Global" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Struct" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="FunctionPredecl" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Function" />
+      </file>
+      <class>
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Property" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Synthesize" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="InitMethod" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="StaticMethod" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="InstanceMethod" />
+        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="DeallocMethod" />
+      </class>
+      <extensions>
+        <pair source="cpp" header="h" fileNamingConvention="NONE" />
+        <pair source="c" header="h" fileNamingConvention="NONE" />
+      </extensions>
+    </Objective-C-extensions>
+    <codeStyleSettings language="kotlin">
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </codeStyleSettings>
+  </code_scheme>
+</component>

collision/.idea/codeStyles/codeStyleConfig.xml

@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+  </state>
+</component>

collision/.idea/copyright/GPL_v__2_0.xml

@@ -0,0 +1,6 @@
+<component name="CopyrightManager">
+  <copyright>
+    <option name="notice" value="Copyright (c) &amp;#36;today.year, norangebit &#10;&#10;This file is part of &amp;#36;project.name.&#10;&#10;     &amp;#36;project.name is free software: you can redistribute it and/or modify&#10;     it under the terms of the GNU General Public License as published by&#10;     the Free Software Foundation, either version 3 of the License, or&#10;     (at your option) any later version.&#10;&#10;     &amp;#36;project.name is distributed in the hope that it will be useful,&#10;     but WITHOUT ANY WARRANTY; without even the implied warranty of&#10;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the&#10;     GNU General Public License for more details.&#10;&#10;     You should have received a copy of the GNU General Public License&#10;     along with &amp;#36;project.name.  If not, see &lt;http://www.gnu.org/licenses/&gt;&#10;" />
+    <option name="myName" value="GPL v. 2.0" />
+  </copyright>
+</component>

collision/.idea/copyright/profiles_settings.xml

@@ -0,0 +1,7 @@
+<component name="CopyrightManager">
+  <settings>
+    <module2copyright>
+      <element module="All" copyright="GPL v. 2.0" />
+    </module2copyright>
+  </settings>
+</component>

collision/.idea/gradle.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>

collision/.idea/misc.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CMakeSettings">
+    <configurations>
+      <configuration PROFILE_NAME="Debug" CONFIG_NAME="Debug" />
+    </configurations>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>

collision/.idea/runConfigurations.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.AllInPackageGradleConfigurationProducer" />
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestClassGradleConfigurationProducer" />
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestMethodGradleConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>

collision/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>

collision/README.md

@@ -0,0 +1,3 @@
+# Collision
+
+ARCore and Sceneform project to show how detect collision between virtual object.

collision/app/.gitignore

@@ -0,0 +1 @@
+/build

collision/app/build.gradle

@@ -0,0 +1,40 @@
+apply plugin: 'com.android.application'
+
+apply plugin: 'kotlin-android'
+
+apply plugin: 'kotlin-android-extensions'
+
+android {
+    compileSdkVersion 28
+    defaultConfig {
+        applicationId "it.norangeb.collision"
+        minSdkVersion 26
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'com.android.support:appcompat-v7:28.0.0'
+    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+    implementation 'com.android.support:design:28.0.0'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.android.support.test:runner:1.0.2'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    implementation 'com.google.ar.sceneform.ux:sceneform-ux:1.6.0'
+}

collision/app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

collision/app/src/androidTest/java/it/norangeb/collision/ExampleInstrumentedTest.kt

@@ -0,0 +1,24 @@
+package it.norangeb.collision
+
+import android.support.test.InstrumentationRegistry
+import android.support.test.runner.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getTargetContext()
+        assertEquals("it.norangeb.collision", appContext.packageName)
+    }
+}

collision/app/src/main/AndroidManifest.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="it.norangeb.collision">
+
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-feature android:name="android.hardware.camera.ar" android:required="true" />
+
+    <application
+            android:allowBackup="true"
+            android:icon="@mipmap/ic_launcher"
+            android:label="@string/app_name"
+            android:roundIcon="@mipmap/ic_launcher_round"
+            android:supportsRtl="true"
+            android:theme="@style/AppTheme">
+
+        <meta-data android:name="com.google.ar.core" android:value="required" />
+
+        <activity
+                android:name=".MainActivity"
+                android:label="@string/app_name"
+                android:theme="@style/AppTheme.NoActionBar">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

collision/app/src/main/java/it/norangeb/collision/MainActivity.kt

@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2019, norangebit
+ *
+ * This file is part of collision.
+ *
+ *      collision is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License, or
+ *      (at your option) any later version.
+ *
+ *      collision is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with collision.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+package it.norangeb.collision
+
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+import android.view.MotionEvent
+import android.widget.Toast
+import com.google.ar.core.HitResult
+import com.google.ar.core.Plane
+import com.google.ar.sceneform.FrameTime
+import com.google.ar.sceneform.Node
+import com.google.ar.sceneform.Scene
+import com.google.ar.sceneform.rendering.Color
+import com.google.ar.sceneform.ux.ArFragment
+
+class MainActivity : AppCompatActivity() {
+    private val TAG = MainActivity::class.java.canonicalName
+
+    private lateinit var arFragment: ArFragment
+    private lateinit var arScene: Scene
+    private var lastNode: Node? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        if (!checkIsSupportedDeviceOrFinish(this, TAG))
+            return
+
+        setContentView(R.layout.activity_main)
+
+        arFragment = supportFragmentManager.findFragmentById(R.id.ar_fragment) as ArFragment
+        arScene = arFragment.arSceneView.scene
+
+        arFragment.setOnTapArPlaneListener(this::addShape)
+
+        arScene.addOnUpdateListener(this::onUpdate)
+    }
+
+    private fun onUpdate(frameTime: FrameTime) {
+        val node = lastNode ?: return
+        val overlappedNodes = arScene.overlapTestAll(node)
+        if (overlappedNodes.isNotEmpty())
+            onCollision(overlappedNodes)
+    }
+
+    private fun onCollision(nodes: List<Node>) {
+        Toast.makeText(this, "collision", Toast.LENGTH_LONG).show()
+        lastNode?.isEnabled = false
+        lastNode = null
+    }
+
+    private fun addShape(hitResult: HitResult, plane: Plane, motionEvent: MotionEvent) {
+        val red = Color(android.graphics.Color.RED)
+
+        buildMaterial(this, red) {
+            val cube = buildShape(Shape.CUBE, it)
+
+            lastNode = addNodeToScene(arFragment, hitResult.createAnchor(), cube)
+        }
+    }
+}

collision/app/src/main/java/it/norangeb/collision/Util.kt

@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2019, norangebit
+ *
+ * This file is part of collision.
+ *
+ *      collision is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License, or
+ *      (at your option) any later version.
+ *
+ *      collision is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with collision.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+package it.norangeb.collision
+
+import android.annotation.SuppressLint
+import android.app.Activity
+import android.app.ActivityManager
+import android.content.Context
+import android.os.Build
+import android.util.Log
+import android.widget.Toast
+import com.google.ar.core.Anchor
+import com.google.ar.sceneform.AnchorNode
+import com.google.ar.sceneform.Node
+import com.google.ar.sceneform.math.Vector3
+import com.google.ar.sceneform.rendering.*
+import com.google.ar.sceneform.ux.ArFragment
+
+private val MIN_OPENGL_VERSION = 3.0
+
+@SuppressLint("ObsoleteSdkInt")
+fun checkIsSupportedDeviceOrFinish(activity: Activity, tag: String): Boolean {
+    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
+        Log.e(tag, "Sceneform requires Android N or later")
+        Toast.makeText(activity, "Sceneform requires Android N or later", Toast.LENGTH_LONG).show()
+        activity.finish()
+        return false
+    }
+    val openGlVersionString = (activity.getSystemService(Context.ACTIVITY_SERVICE) as ActivityManager)
+        .deviceConfigurationInfo
+        .glEsVersion
+    if (java.lang.Double.parseDouble(openGlVersionString) < MIN_OPENGL_VERSION) {
+        Log.e(tag, "Sceneform requires OpenGL ES 3.0 later")
+        Toast.makeText(activity, "Sceneform requires OpenGL ES 3.0 or later", Toast.LENGTH_LONG)
+            .show()
+        activity.finish()
+        return false
+    }
+    return true
+}
+
+fun buildMaterial(
+    context: Context,
+    color: Color,
+    onSuccess: (material: Material) -> Unit
+) {
+    MaterialFactory
+        .makeOpaqueWithColor(context, color)
+        .thenAccept(onSuccess)
+}
+
+fun buildShape(
+    shape: Shape,
+    material: Material
+): ModelRenderable {
+    val dimension = Vector3(0.1f, 0.1f, 0.1f)
+    return when (shape) {
+        Shape.CUBE -> ShapeFactory
+            .makeCube(dimension, Vector3(0.0f, 0.0f, 0.0f), material)
+        Shape.CYLINDER -> ShapeFactory
+            .makeCylinder(0.1f, 0.3f, Vector3(0.0f, 0.0f, 0.0f), material)
+        Shape.SPHERE -> ShapeFactory
+            .makeSphere(0.1f, dimension, material)
+    }
+}
+
+fun addNodeToScene(arFragment: ArFragment, anchor: Anchor, renderable: Renderable): Node {
+    val anchorNode = AnchorNode(anchor)
+    anchorNode.renderable = renderable
+    arFragment.arSceneView.scene.addChild(anchorNode)
+    return anchorNode
+}
+
+enum class Shape {
+    CUBE,
+    SPHERE,
+    CYLINDER
+}

collision/app/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -0,0 +1,34 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:aapt="http://schemas.android.com/aapt"
+        android:width="108dp"
+        android:height="108dp"
+        android:viewportHeight="108"
+        android:viewportWidth="108">
+    <path
+            android:fillType="evenOdd"
+            android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
+            android:strokeColor="#00000000"
+            android:strokeWidth="1">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                    android:endX="78.5885"
+                    android:endY="90.9159"
+                    android:startX="48.7653"
+                    android:startY="61.0927"
+                    android:type="linear">
+                <item
+                        android:color="#44000000"
+                        android:offset="0.0"/>
+                <item
+                        android:color="#00000000"
+                        android:offset="1.0"/>
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+            android:fillColor="#FFFFFF"
+            android:fillType="nonZero"
+            android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
+            android:strokeColor="#00000000"
+            android:strokeWidth="1"/>
+</vector>

collision/app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:height="108dp"
+        android:width="108dp"
+        android:viewportHeight="108"
+        android:viewportWidth="108">
+    <path android:fillColor="#008577"
+          android:pathData="M0,0h108v108h-108z"/>
+    <path android:fillColor="#00000000" android:pathData="M9,0L9,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,0L19,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M29,0L29,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M39,0L39,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M49,0L49,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M59,0L59,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M69,0L69,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M79,0L79,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M89,0L89,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M99,0L99,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,9L108,9"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,19L108,19"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,29L108,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,39L108,39"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,49L108,49"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,59L108,59"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,69L108,69"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,79L108,79"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,89L108,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,99L108,99"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,29L89,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,39L89,39"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,49L89,49"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,59L89,59"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,69L89,69"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,79L89,79"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M29,19L29,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M39,19L39,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M49,19L49,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M59,19L59,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M69,19L69,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M79,19L79,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+</vector>

collision/app/src/main/res/layout/activity_main.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (c) 2019, norangebit
+  ~
+  ~ This file is part of collision.
+  ~
+  ~      collision is free software: you can redistribute it and/or modify
+  ~      it under the terms of the GNU General Public License as published by
+  ~      the Free Software Foundation, either version 3 of the License, or
+  ~      (at your option) any later version.
+  ~
+  ~      collision is distributed in the hope that it will be useful,
+  ~      but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~      GNU General Public License for more details.
+  ~
+  ~      You should have received a copy of the GNU General Public License
+  ~      along with collision.  If not, see <http://www.gnu.org/licenses/>
+  ~
+  -->
+
+<android.support.design.widget.CoordinatorLayout
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        xmlns:tools="http://schemas.android.com/tools"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        tools:context=".MainActivity">
+
+    <include layout="@layout/content_main"/>
+
+</android.support.design.widget.CoordinatorLayout>

collision/app/src/main/res/layout/content_main.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (c) 2019, norangebit
+  ~
+  ~ This file is part of collision.
+  ~
+  ~      collision is free software: you can redistribute it and/or modify
+  ~      it under the terms of the GNU General Public License as published by
+  ~      the Free Software Foundation, either version 3 of the License, or
+  ~      (at your option) any later version.
+  ~
+  ~      collision is distributed in the hope that it will be useful,
+  ~      but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~      GNU General Public License for more details.
+  ~
+  ~      You should have received a copy of the GNU General Public License
+  ~      along with collision.  If not, see <http://www.gnu.org/licenses/>
+  ~
+  -->
+
+<FrameLayout
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:tools="http://schemas.android.com/tools"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior"
+        tools:showIn="@layout/activity_main"
+        tools:context=".MainActivity">
+    <fragment
+            android:layout_width="match_parent"
+            android:layout_height="match_parent" android:name="com.google.ar.sceneform.ux.ArFragment"
+            android:id="@+id/ar_fragment"/>
+</FrameLayout>

collision/app/src/main/res/menu/menu_main.xml

@@ -0,0 +1,9 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+      xmlns:app="http://schemas.android.com/apk/res-auto"
+      xmlns:tools="http://schemas.android.com/tools"
+      tools:context="it.norangeb.collision.MainActivity">
+    <item android:id="@+id/action_settings"
+          android:title="@string/action_settings"
+          android:orderInCategory="100"
+          app:showAsAction="never"/>
+</menu>

collision/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

collision/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

collision/app/src/main/res/values/colors.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#008577</color>
+    <color name="colorPrimaryDark">#00574B</color>
+    <color name="colorAccent">#D81B60</color>
+</resources>

collision/app/src/main/res/values/dimens.xml

@@ -0,0 +1,3 @@
+<resources>
+    <dimen name="fab_margin">16dp</dimen>
+</resources>

collision/app/src/main/res/values/strings.xml

@@ -0,0 +1,4 @@
+<resources>
+    <string name="app_name">collision</string>
+    <string name="action_settings">Settings</string>
+</resources>

collision/app/src/main/res/values/styles.xml

@@ -0,0 +1,17 @@
+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+    </style>
+    <style name="AppTheme.NoActionBar">
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+    </style>
+    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar"/>
+    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light"/>
+
+</resources>

collision/app/src/test/java/it/norangeb/collision/ExampleUnitTest.kt

@@ -0,0 +1,17 @@
+package it.norangeb.collision
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}

collision/build.gradle

@@ -0,0 +1,28 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+    ext.kotlin_version = '1.3.11'
+    repositories {
+        google()
+        jcenter()
+        
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.3.0'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        jcenter()
+        
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

collision/gradle.properties

@@ -0,0 +1,15 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx1536m
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official