add views & swing Java 3d demos

demoProjects/ViewsGraph3d/.gitignore

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+*.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
+.cxx
+local.properties

demoProjects/ViewsGraph3d/app/.gitignore

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+/build

demoProjects/ViewsGraph3d/app/build.gradle

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+plugins {
+    id 'com.android.application'
+}
+
+android {
+    namespace 'android.support.viewsgraph3d'
+    compileSdk 33
+
+    defaultConfig {
+        applicationId "android.support.viewsgraph3d"
+        minSdk 25
+        targetSdk 33
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.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 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'com.google.android.material:material:1.9.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+}

demoProjects/ViewsGraph3d/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

demoProjects/ViewsGraph3d/app/src/androidTest/java/android/support/viewsgraph3d/ExampleInstrumentedTest.java

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+package android.support.viewsgraph3d;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("android.support.viewsgraph3d", appContext.getPackageName());
+    }
+}

demoProjects/ViewsGraph3d/app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.ViewsGraph3d"
+        tools:targetApi="31">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

demoProjects/ViewsGraph3d/app/src/main/java/android/support/constraintLayout/extlib/graph3d/Graph.java

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+package android.support.constraintLayout.extlib.graph3d;
+
+
+import android.support.constraintLayout.extlib.graph3d.objects.AxisBox;
+import android.support.constraintLayout.extlib.graph3d.objects.Surface3D;
+
+public class Graph {
+    Scene3D mScene3D = new Scene3D();
+
+    int mGraphType = 2;
+    private float mLastTouchX0 = Float.NaN;
+    private float mLastTouchY0;
+    private float mLastTrackBallX;
+    private float mLastTrackBallY;
+    double mDownScreenWidth;
+    Surface3D mSurface;
+    AxisBox mAxisBox;
+    float range = 20;
+    float minZ = -10;
+    float maxZ = 10;
+    float mZoomFactor = 1;
+    long nanoTime;
+    float time = 0;
+    int graphWidth;
+    int graphHeight;
+    ImageSupport image;
+
+    public interface ImageSupport {
+        void makeImage(int w, int h);
+        int[] getBacking();
+    }
+
+    public Graph(ImageSupport image) {
+        this.image = image;
+        mAxisBox = new AxisBox();
+        mAxisBox.setRange(-range, range, -range, range, minZ, maxZ);
+        mScene3D.addPostObject(mAxisBox);
+        buildSurface(DEFAULT);
+        resetCamera();
+    }
+
+    public static Surface3D DEFAULT = new Surface3D((x, y, t) -> {
+        double d = Math.sqrt(x * x + y * y);
+        return 0.3f * (float) (Math.cos(d) * (y * y - x * x) / (1 + d));
+    });
+
+    public void buildSurface(Surface3D surface3D) {
+        mSurface = surface3D;
+        mSurface.setRange(-range, range, -range, range, minZ, maxZ);
+        mScene3D.setObject(mSurface);
+    }
+
+    public void resetCamera() {
+        mScene3D.resetCamera();
+    }
+
+    public void setStartTime() {
+        nanoTime = System.nanoTime();
+    }
+
+    public void tick(long now) {
+        time += (now - nanoTime) * 1E-9f;
+        nanoTime = now;
+        mSurface.calcSurface(time, false);
+        mScene3D.update();
+    }
+
+    public void resize(int width, int height) {
+        graphHeight = height;
+        graphWidth = width;
+        image.makeImage(width, height);
+        mScene3D.setScreenDim(width, height, image.getBacking(), 0x00AAAAAA);
+    }
+
+    public void trackDown(float x, float y) {
+        mDownScreenWidth = mScene3D.getScreenWidth();
+        mLastTouchX0 = x;
+        mLastTouchY0 = y;
+        mScene3D.trackBallDown(mLastTouchX0, mLastTouchY0);
+        mLastTrackBallX = mLastTouchX0;
+        mLastTrackBallY = mLastTouchY0;
+    }
+
+    public void trackDrag(float x, float y) {
+        if (Float.isNaN(mLastTouchX0)) {
+            return;
+        }
+        float tx = x;
+        float ty = y;
+        float moveX = (mLastTrackBallX - tx);
+        float moveY = (mLastTrackBallY - ty);
+        if (moveX * moveX + moveY * moveY < 4000f) {
+            mScene3D.trackBallMove(tx, ty);
+        }
+        mLastTrackBallX = tx;
+        mLastTrackBallY = ty;
+    }
+
+    public void trackDone() {
+        mLastTouchX0 = Float.NaN;
+        mLastTouchY0 = Float.NaN;
+    }
+
+    public void wheel(float rotation, boolean control) {
+        if (control) {
+            mZoomFactor *= (float) Math.pow(1.01, rotation);
+            mScene3D.setZoom(mZoomFactor);
+            mScene3D.setUpMatrix(graphWidth, graphHeight);
+            mScene3D.update();
+        } else {
+            range = range * (float) Math.pow(1.01, rotation);
+            mSurface.setArraySize(Math.min(300, (int) (range * 5)));
+            mSurface.setRange(-range, range, -range, range, minZ, maxZ);
+            mAxisBox.setRange(-range, range, -range, range, minZ, maxZ);
+            mScene3D.update();
+        }
+    }
+
+    public static final Surface3D BLACK_HOLE_MERGE = new Surface3D((x, y, t) -> {
+        float d = (float) Math.sqrt(x * x + y * y);
+        float d2 = (float) Math.pow(x * x + y * y, 0.125);
+        float angle = (float) Math.atan2(y, x);
+        float s = (float) Math.sin(d + angle - t * 5);
+        float s2 = (float) Math.sin(t);
+        float c = (float) Math.cos(d + angle - t * 5);
+        return (s2 * s2 + 0.1f) * d2 * 5 * (s + c) / (1 + d * d / 20);
+        //  return  (float) (s*s+0.1) * (float) (Math.cos(d-time*5) *(y*y-x*x) /(1+d*d));
+    });
+
+    public void render() {
+        if (mScene3D.notSetUp()) {
+            mScene3D.setUpMatrix(graphWidth, graphHeight);
+        }
+
+        mScene3D.render(mGraphType);
+    }
+
+    public void lightMovesWithCamera(boolean doesMove) {
+        mScene3D.mLightMovesWithCamera = doesMove;
+    }
+
+    public void setSaturation(float sat) {
+        mSurface.mSaturation = sat;
+        mScene3D.update();
+    }
+}

desktop/graph3d/com/support/constraintlayout/extlib/graph3d/Matrix.java → demoProjects/ViewsGraph3d/app/src/main/java/android/support/constraintLayout/extlib/graph3d/Matrix.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.support.constraintlayout.extlib.graph3d;
+package android.support.constraintLayout.extlib.graph3d;
 
 import java.text.DecimalFormat;
 import java.util.Arrays;

desktop/graph3d/com/support/constraintlayout/extlib/graph3d/Object3D.java → demoProjects/ViewsGraph3d/app/src/main/java/android/support/constraintLayout/extlib/graph3d/Object3D.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.support.constraintlayout.extlib.graph3d;
+package android.support.constraintLayout.extlib.graph3d;
 
 /**
  * This represents 3d Object in this system.

desktop/graph3d/com/support/constraintlayout/extlib/graph3d/Quaternion.java → demoProjects/ViewsGraph3d/app/src/main/java/android/support/constraintLayout/extlib/graph3d/Quaternion.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.support.constraintlayout.extlib.graph3d;
+package android.support.constraintLayout.extlib.graph3d;
 
 /**
  * This is a class that represents a Quaternion

desktop/graph3d/com/support/constraintlayout/extlib/graph3d/Scene3D.java → demoProjects/ViewsGraph3d/app/src/main/java/android/support/constraintLayout/extlib/graph3d/Scene3D.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.support.constraintlayout.extlib.graph3d;
+package android.support.constraintLayout.extlib.graph3d;
 
 import java.util.ArrayList;
 import java.util.Arrays;

desktop/graph3d/com/support/constraintlayout/extlib/graph3d/VectorUtil.java → demoProjects/ViewsGraph3d/app/src/main/java/android/support/constraintLayout/extlib/graph3d/VectorUtil.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.support.constraintlayout.extlib.graph3d;
+package android.support.constraintLayout.extlib.graph3d;
 
 import java.text.DecimalFormat;
 

desktop/graph3d/com/support/constraintlayout/extlib/graph3d/ViewMatrix.java → demoProjects/ViewsGraph3d/app/src/main/java/android/support/constraintLayout/extlib/graph3d/ViewMatrix.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.support.constraintlayout.extlib.graph3d;
+package android.support.constraintLayout.extlib.graph3d;
 
 import java.text.DecimalFormat;
 import java.util.Arrays;

desktop/graph3d/com/support/constraintlayout/extlib/graph3d/objects/AxisBox.java → demoProjects/ViewsGraph3d/app/src/main/java/android/support/constraintLayout/extlib/graph3d/objects/AxisBox.java

@@ -13,11 +13,12 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.support.constraintlayout.extlib.graph3d.objects;
+package android.support.constraintLayout.extlib.graph3d.objects;
+
+import android.support.constraintLayout.extlib.graph3d.Object3D;
+import android.support.constraintLayout.extlib.graph3d.Scene3D;
+import android.support.constraintLayout.extlib.graph3d.VectorUtil;
 
-import com.support.constraintlayout.extlib.graph3d.Object3D;
-import com.support.constraintlayout.extlib.graph3d.Scene3D;
-import com.support.constraintlayout.extlib.graph3d.VectorUtil;
 
 /**
  * Draws box along the axis