Polygon examples

AndroidManifest.xml

@@ -36,6 +36,7 @@
 		<activity android:name=".AutoParallaxBackgroundExample" android:configChanges="orientation"/>
 		<activity android:name=".BitmapFontExample" android:configChanges="orientation"/>
 		<activity android:name=".BoundCameraExample" android:configChanges="orientation"/>
+		<activity android:name=".ButtonSpriteExample" android:configChanges="orientation"/>
 		<activity android:name=".CanvasTextureCompositingExample" android:configChanges="orientation"/>
 		<activity android:name=".ChangeableTextExample" android:configChanges="orientation"/>
 		<activity android:name=".CollisionDetectionExample" android:configChanges="orientation"/>
@@ -74,6 +75,7 @@
 		<activity android:name=".PhysicsRevoluteJointExample" android:configChanges="orientation"/>
 		<activity android:name=".PhysicsMouseJointExample" android:configChanges="orientation"/>
 		<activity android:name=".PinchZoomExample" android:configChanges="orientation"/>
+		<activity android:name=".PolygonExample" android:configChanges="orientation"/>
 		<activity android:name=".PVRCCZTextureExample" android:configChanges="orientation"/>
 		<activity android:name=".PVRGZTextureExample" android:configChanges="orientation"/>
 		<activity android:name=".PVRTextureExample" android:configChanges="orientation"/>

res/values/strings.xml

@@ -49,6 +49,7 @@
 	<string name="example_autoparallaxbackground">Using an AutoParallaxBackground</string>
 	<string name="example_bitmapfont">Using a BitmapFont</string>
 	<string name="example_boundcamera">Using a BoundCamera</string>
+	<string name="example_buttonsprite">Simple two states button</string>
 	<string name="example_canvastexturecompositing">Compositing Textures (Canvas)</string>
 	<string name="example_changeabletext">Changeable Text</string>
 	<string name="example_collisiondetection">Collision Detection</string>
@@ -87,6 +88,7 @@
 	<string name="example_physicsjump">Combining Physics and Touch</string>
 	<string name="example_physicsremove">Removing a Physics Object</string>
 	<string name="example_pinchzoom">Using PinchZoom</string>
+	<string name="example_polygon">Drawing Polygons</string>
 	<string name="example_pvrccztexture">PVRCCZ Texture</string>
 	<string name="example_pvrgztexture">PVRGZ Texture</string>
 	<string name="example_pvrtexture">PVR Texture</string>

src/org/andengine/examples/PhysicsExample.java

@@ -217,7 +217,7 @@ private static Body createTriangleBody(final PhysicsWorld pPhysicsWorld, final I
 
 		final float top = -halfHeight;
 		final float bottom = halfHeight;
-		final float left = -halfHeight;
+		final float left = -halfWidth;
 		final float centerX = 0;
 		final float right = halfWidth;
 

src/org/andengine/examples/PolygonExample.java

@@ -0,0 +1,127 @@
+package org.andengine.examples;
+
+import org.andengine.engine.camera.Camera;
+import org.andengine.engine.options.EngineOptions;
+import org.andengine.engine.options.EngineOptions.ScreenOrientation;
+import org.andengine.engine.options.resolutionpolicy.RatioResolutionPolicy;
+import org.andengine.entity.primitive.Ellipse;
+import org.andengine.entity.primitive.PolyLine;
+import org.andengine.entity.primitive.Polygon;
+import org.andengine.entity.primitive.Rectangle;
+import org.andengine.entity.scene.Scene;
+import org.andengine.entity.scene.background.Background;
+import org.andengine.entity.util.FPSLogger;
+import org.andengine.opengl.vbo.VertexBufferObjectManager;
+import org.andengine.ui.activity.SimpleBaseGameActivity;
+import org.andengine.util.color.Color;
+
+/**
+ * 
+ * @author Rodrigo Castro
+ * @since 23:05:11 - 28.01.2012
+ */
+public class PolygonExample extends SimpleBaseGameActivity {
+	// ===========================================================
+	// Constants
+	// ===========================================================
+
+	private static final int CAMERA_WIDTH = 720;
+	private static final int CAMERA_HEIGHT = 480;
+
+	// ===========================================================
+	// Fields
+	// ===========================================================
+
+	// ===========================================================
+	// Constructors
+	// ===========================================================
+
+	// ===========================================================
+	// Getter & Setter
+	// ===========================================================
+
+	// ===========================================================
+	// Methods for/from SuperClass/Interfaces
+	// ===========================================================
+
+	@Override
+	public EngineOptions onCreateEngineOptions() {
+		final Camera camera = new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT);
+
+		return new EngineOptions(true, ScreenOrientation.LANDSCAPE_FIXED, new RatioResolutionPolicy(CAMERA_WIDTH, CAMERA_HEIGHT), camera);
+	}
+
+	@Override
+	public void onCreateResources() {
+
+	}
+
+	@Override
+	public Scene onCreateScene() {
+		this.mEngine.registerUpdateHandler(new FPSLogger());
+
+		final Scene scene = new Scene();
+		scene.setBackground(new Background(0.09804f, 0.6274f, 0.8784f));
+
+		// The polygon is closed automatically
+		final float[] vertexX1 = { 0.0f, 200.0f, 250.0f, 200.0f, 200.0f, 100.0f, 100.0f,   0.0f};
+		final float[] vertexY1 = { 0.0f,   0.0f, 50.0f, 100.0f,  200.0f, 150.0f,  50.0f,  50.0f};
+
+		// This polygon won't be drawn because its vertices are not CCW (Counter ClockWise)
+		final float[] vertexX2 = { 0.0f,   0.0f, 100.0f, 100.0f, 200.0f, 200.0f, 250.0f,  200.0f};
+		final float[] vertexY2 = { 0.0f,  50.0f,  50.0f, 150.0f,  200.0f, 100.0f,  50.0f,   0.0f};
+
+		final float[] vertexX3 = { 0.0f,   0.0f, 200.0f, 200.0f  };
+		final float[] vertexY3 = { 0.0f, 100.0f, 100.0f, 0.0f };
+
+		// Dummy vertices (won't be used)
+		final float[] vertexX4Dummy = { 0.0f,   0.0f,   0.0f,   0.0f,   0.0f };
+		final float[] vertexY4Dummy = { 0.0f,   0.0f,   0.0f,   0.0f,   0.0f };
+		// This polygon can't be triangulated with the current algorithm and will trigger a null pointer exception
+		final float[] vertexX4 = { 0.0f,  50.0f, 100.0f, 100.0f,   0.0f };
+		final float[] vertexY4 = { 0.0f, 150.0f,   0.0f, 100.0f, 100.0f };
+
+		final VertexBufferObjectManager vertexBufferObjectManager = this.getVertexBufferObjectManager();
+
+		final Polygon polygon1 = new Polygon(100, 100, vertexX1, vertexY1, vertexBufferObjectManager);
+		polygon1.setColor(Color.RED);
+
+		final Polygon polygon2 = new Polygon(400, 500, vertexX2, vertexY2, vertexBufferObjectManager);
+		polygon2.setColor(Color.GREEN);
+
+		final Polygon polygon3 = new Polygon(20, 350, vertexX3, vertexY3, vertexBufferObjectManager);
+		polygon3.setColor(Color.PINK);
+
+		//final Polygon polygon4 = new Polygon(20, 350, vertexX4, vertexY4, vertexBufferObjectManager);
+		//polygon4.setColor(Color.CYAN);
+
+		final PolyLine polyLine = new PolyLine(500, 50, vertexX4Dummy, vertexY4Dummy, vertexBufferObjectManager);
+		polyLine.setColor(Color.YELLOW);
+		polyLine.setLineWidth( 7f );
+		// Update and use real vertices
+		polyLine.updateVertices(vertexX4, vertexY4);
+
+		final Ellipse ellipse = new Ellipse(430, 200, 100.0f, 50.0f, vertexBufferObjectManager);
+		ellipse.setColor(Color.CYAN);
+
+		final Rectangle rectangle = new Rectangle(300, 300, 200, 100, vertexBufferObjectManager);
+
+		scene.attachChild(polygon1);
+		scene.attachChild(polygon2);
+		scene.attachChild(polygon3);
+		//scene.attachChild(polygon4);
+		scene.attachChild(polyLine);
+		scene.attachChild(ellipse);
+		scene.attachChild(rectangle);
+
+		return scene;
+	}
+
+	// ===========================================================
+	// Methods
+	// ===========================================================
+
+	// ===========================================================
+	// Inner and Anonymous Classes
+	// ===========================================================
+}

src/org/andengine/examples/benchmark/AttachDetachBenchmark.java

@@ -6,7 +6,6 @@
 import org.andengine.engine.options.EngineOptions;
 import org.andengine.engine.options.EngineOptions.ScreenOrientation;
 import org.andengine.engine.options.resolutionpolicy.RatioResolutionPolicy;
-import org.andengine.entity.IEntity;
 import org.andengine.entity.scene.Scene;
 import org.andengine.entity.scene.background.Background;
 import org.andengine.entity.sprite.Sprite;

src/org/andengine/examples/launcher/Example.java

@@ -6,6 +6,7 @@
 import org.andengine.examples.AutoParallaxBackgroundExample;
 import org.andengine.examples.BitmapFontExample;
 import org.andengine.examples.BoundCameraExample;
+import org.andengine.examples.ButtonSpriteExample;
 import org.andengine.examples.CanvasTextureCompositingExample;
 import org.andengine.examples.CollisionDetectionExample;
 import org.andengine.examples.ColorKeyTextureSourceDecoratorExample;
@@ -46,6 +47,7 @@
 import org.andengine.examples.PhysicsRemoveExample;
 import org.andengine.examples.PhysicsRevoluteJointExample;
 import org.andengine.examples.PinchZoomExample;
+import org.andengine.examples.PolygonExample;
 import org.andengine.examples.R;
 import org.andengine.examples.RadialBlurExample;
 import org.andengine.examples.RectangleExample;
@@ -105,6 +107,7 @@ enum Example {
 	AUTOPARALLAXBACKGROUND(AutoParallaxBackgroundExample.class, R.string.example_autoparallaxbackground),
 	BITMAPFONT(BitmapFontExample.class, R.string.example_bitmapfont),
 	BOUNDCAMERA(BoundCameraExample.class, R.string.example_boundcamera),
+	BUTTONSPRITE(ButtonSpriteExample.class, R.string.example_buttonsprite),
 	CANVASTEXTURECOMPOSITING(CanvasTextureCompositingExample.class, R.string.example_canvastexturecompositing),
 	CHANGEABLETEXT(TextExample.class, R.string.example_changeabletext),
 	COLLISIONDETECTION(CollisionDetectionExample.class, R.string.example_collisiondetection),
@@ -119,6 +122,7 @@ enum Example {
 	HULLALGORITHM(HullAlgorithmExample.class, R.string.example_hullalgorithm),
 	IMAGEFORMATS(ImageFormatsExample.class, R.string.example_imageformats),
 	LEVELLOADER(LevelLoaderExample.class, R.string.example_levelloader),
+	POLYGON(PolygonExample.class, R.string.example_polygon),
 	LINE(LineExample.class, R.string.example_line),
 	LOADTEXTURE(LoadTextureExample.class, R.string.example_loadtexture),
 	MENU(MenuExample.class, R.string.example_menu),

src/org/andengine/examples/launcher/ExampleGroup.java

@@ -16,7 +16,7 @@ public enum ExampleGroup {
 	// ===========================================================
 
 	SIMPLE(R.string.examplegroup_simple, 
-			Example.LINE, Example.RECTANGLE, Example.SPRITE, Example.SPRITEREMOVE, Example.SPRITEBATCH),
+			Example.POLYGON, Example.LINE, Example.RECTANGLE, Example.SPRITE, Example.SPRITEREMOVE, Example.SPRITEBATCH, Example.BUTTONSPRITE),
 	MODIFIER_AND_ANIMATION(R.string.examplegroup_modifier_and_animation, 
 			Example.MOVINGBALL, Example.ENTITYMODIFIER, Example.ENTITYMODIFIERIRREGULAR, Example.PATHMODIFIER, Example.ANIMATEDSPRITES, Example.EASEFUNCTION, Example.ROTATION3D ),
 	TOUCH(R.string.examplegroup_touch,