public static class

DiamondSprite.LowMemoryDiamondSpriteVertexBufferObject

extends Sprite.LowMemorySpriteVertexBufferObject
implements DiamondSprite.IDiamondSpriteVertexBufferObject

package org.andengine.entity.sprite;

import java.nio.FloatBuffer;

import org.andengine.opengl.shader.ShaderProgram;
import org.andengine.opengl.texture.region.ITextureRegion;
import org.andengine.opengl.vbo.VertexBufferObjectManager;
import org.andengine.opengl.vbo.VertexBufferObject.DrawType;
import org.andengine.opengl.vbo.attribute.VertexBufferObjectAttributes;

/**
 * Unlike {@link Sprite}, the {@link DiamondSprite} class doesn't render the rectangular outline of a {@link ITextureRegion}, but cuts out a diamond.
 * <pre>
 * +--------+
 * |   /\   |
 * |  /  \  |
 * | /    \ |
 * |/      \|
 * |\      /|
 * | \    / |
 * |  \  /  |
 * |   \/   |
 * +--------+
 * </pre>
 *
 * (c) Zynga 2011
 *
 * @author Nicolas Gramlich <ngramlich@zynga.com>
 * @since 20:26:32 - 24.10.2011
 */
public class DiamondSprite extends Sprite {
	// ===========================================================
	// Constants
	// ===========================================================

	// ===========================================================
	// Fields
	// ===========================================================

	// ===========================================================
	// Constructors
	// ===========================================================

	public DiamondSprite(final float pX, final float pY, final ITextureRegion pTextureRegion, final VertexBufferObjectManager pVertexBufferObjectManager) {
		this(pX, pY, pTextureRegion.getWidth(), pTextureRegion.getHeight(), pTextureRegion, pVertexBufferObjectManager, DrawType.STATIC);
	}

	public DiamondSprite(final float pX, final float pY, final ITextureRegion pTextureRegion, final VertexBufferObjectManager pVertexBufferObjectManager, final ShaderProgram pShaderProgram) {
		this(pX, pY, pTextureRegion.getWidth(), pTextureRegion.getHeight(), pTextureRegion, pVertexBufferObjectManager, DrawType.STATIC, pShaderProgram);
	}

	public DiamondSprite(final float pX, final float pY, final ITextureRegion pTextureRegion, final VertexBufferObjectManager pVertexBufferObjectManager, final DrawType pDrawType) {
		this(pX, pY, pTextureRegion.getWidth(), pTextureRegion.getHeight(), pTextureRegion, pVertexBufferObjectManager, pDrawType);
	}

	public DiamondSprite(final float pX, final float pY, final ITextureRegion pTextureRegion, final VertexBufferObjectManager pVertexBufferObjectManager, final DrawType pDrawType, final ShaderProgram pShaderProgram) {
		this(pX, pY, pTextureRegion.getWidth(), pTextureRegion.getHeight(), pTextureRegion, pVertexBufferObjectManager, pDrawType, pShaderProgram);
	}

	public DiamondSprite(final float pX, final float pY, final ITextureRegion pTextureRegion, final IDiamondSpriteVertexBufferObject pDiamondSpriteVertexBufferObject) {
		this(pX, pY, pTextureRegion.getWidth(), pTextureRegion.getHeight(), pTextureRegion, pDiamondSpriteVertexBufferObject);
	}

	public DiamondSprite(final float pX, final float pY, final ITextureRegion pTextureRegion, final IDiamondSpriteVertexBufferObject pDiamondSpriteVertexBufferObject, final ShaderProgram pShaderProgram) {
		this(pX, pY, pTextureRegion.getWidth(), pTextureRegion.getHeight(), pTextureRegion, pDiamondSpriteVertexBufferObject, pShaderProgram);
	}

	public DiamondSprite(final float pX, final float pY, final float pWidth, final float pHeight, final ITextureRegion pTextureRegion, final VertexBufferObjectManager pVertexBufferObjectManager) {
		this(pX, pY, pWidth, pHeight, pTextureRegion, pVertexBufferObjectManager, DrawType.STATIC);
	}

	public DiamondSprite(final float pX, final float pY, final float pWidth, final float pHeight, final ITextureRegion pTextureRegion, final VertexBufferObjectManager pVertexBufferObjectManager, final ShaderProgram pShaderProgram) {
		this(pX, pY, pWidth, pHeight, pTextureRegion, pVertexBufferObjectManager, DrawType.STATIC, pShaderProgram);
	}

	public DiamondSprite(final float pX, final float pY, final float pWidth, final float pHeight, final ITextureRegion pTextureRegion, final VertexBufferObjectManager pVertexBufferObjectManager, final DrawType pDrawType) {
		this(pX, pY, pWidth, pHeight, pTextureRegion, new HighPerformanceDiamondSpriteVertexBufferObject(pVertexBufferObjectManager, Sprite.SPRITE_SIZE, pDrawType, true, Sprite.VERTEXBUFFEROBJECTATTRIBUTES_DEFAULT));
	}

	public DiamondSprite(final float pX, final float pY, final float pWidth, final float pHeight, final ITextureRegion pTextureRegion, final VertexBufferObjectManager pVertexBufferObjectManager, final DrawType pDrawType, final ShaderProgram pShaderProgram) {
		this(pX, pY, pWidth, pHeight, pTextureRegion, new HighPerformanceDiamondSpriteVertexBufferObject(pVertexBufferObjectManager, Sprite.SPRITE_SIZE, pDrawType, true, Sprite.VERTEXBUFFEROBJECTATTRIBUTES_DEFAULT), pShaderProgram);
	}

	public DiamondSprite(final float pX, final float pY, final float pWidth, final float pHeight, final ITextureRegion pTextureRegion, final IDiamondSpriteVertexBufferObject pDiamondSpriteVertexBufferObject) {
		super(pX, pY, pWidth, pHeight, pTextureRegion, pDiamondSpriteVertexBufferObject);
	}

	public DiamondSprite(final float pX, final float pY, final float pWidth, final float pHeight, final ITextureRegion pTextureRegion, final IDiamondSpriteVertexBufferObject pDiamondSpriteVertexBufferObject, final ShaderProgram pShaderProgram) {
		super(pX, pY, pWidth, pHeight, pTextureRegion, pDiamondSpriteVertexBufferObject, pShaderProgram);
	}

	// ===========================================================
	// Getter & Setter
	// ===========================================================

	// ===========================================================
	// Methods for/from SuperClass/Interfaces
	// ===========================================================

	// ===========================================================
	// Methods
	// ===========================================================

	// ===========================================================
	// Inner and Anonymous Classes
	// ===========================================================

	public static interface IDiamondSpriteVertexBufferObject extends ISpriteVertexBufferObject {
		// ===========================================================
		// Constants
		// ===========================================================

		// ===========================================================
		// Methods
		// ===========================================================
	}

	public static class HighPerformanceDiamondSpriteVertexBufferObject extends HighPerformanceSpriteVertexBufferObject implements IDiamondSpriteVertexBufferObject {
		// ===========================================================
		// Constants
		// ===========================================================

		// ===========================================================
		// Fields
		// ===========================================================

		// ===========================================================
		// Constructors
		// ===========================================================

		public HighPerformanceDiamondSpriteVertexBufferObject(final VertexBufferObjectManager pVertexBufferObjectManager, final int pCapacity, final DrawType pDrawType, final boolean pAutoDispose, final VertexBufferObjectAttributes pVertexBufferObjectAttributes) {
			super(pVertexBufferObjectManager, pCapacity, pDrawType, pAutoDispose, pVertexBufferObjectAttributes);
		}

		// ===========================================================
		// Getter & Setter
		// ===========================================================

		// ===========================================================
		// Methods for/from SuperClass/Interfaces
		// ===========================================================

		@Override
		public void onUpdateVertices(final Sprite pSprite) {
			final float[] bufferData = this.mBufferData;

			final float x = 0;
			final float y = 0;
			final float x2 = pSprite.getWidth(); // TODO Optimize with field access?
			final float y2 = pSprite.getHeight(); // TODO Optimize with field access?

			final float xCenter = (x + x2) * 0.5f;
			final float yCenter = (y + y2) * 0.5f;

			bufferData[0 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_X] = x;
			bufferData[0 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_Y] = yCenter;

			bufferData[1 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_X] = xCenter;
			bufferData[1 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_Y] = y2;

			bufferData[2 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_X] = xCenter;
			bufferData[2 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_Y] = y;

			bufferData[3 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_X] = x2;
			bufferData[3 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_Y] = yCenter;

			this.setDirtyOnHardware();
		}

		@Override
		public void onUpdateTextureCoordinates(final Sprite pSprite) {
			final float[] bufferData = this.mBufferData;

			final ITextureRegion textureRegion = pSprite.getTextureRegion();

			final float u;
			final float v;
			final float u2;
			final float v2;

			if(pSprite.isFlippedVertical()) { // TODO Optimize with field access?
				if(pSprite.isFlippedHorizontal()) { // TODO Optimize with field access?
					u = textureRegion.getU2();
					u2 = textureRegion.getU();
					v = textureRegion.getV2();
					v2 = textureRegion.getV();
				} else {
					u = textureRegion.getU();
					u2 = textureRegion.getU2();
					v = textureRegion.getV2();
					v2 = textureRegion.getV();
				}
			} else {
				if(pSprite.isFlippedHorizontal()) { // TODO Optimize with field access?
					u = textureRegion.getU2();
					u2 = textureRegion.getU();
					v = textureRegion.getV();
					v2 = textureRegion.getV2();
				} else {
					u = textureRegion.getU();
					u2 = textureRegion.getU2();
					v = textureRegion.getV();
					v2 = textureRegion.getV2();
				}
			}

			final float uCenter = (u + u2) * 0.5f;
			final float vCenter = (v + v2) * 0.5f;

			if(textureRegion.isRotated()) {
				bufferData[0 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U] = uCenter;
				bufferData[0 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V] = v;

				bufferData[1 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U] = u;
				bufferData[1 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V] = vCenter;

				bufferData[2 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U] = u2;
				bufferData[2 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V] = vCenter;

				bufferData[3 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U] = uCenter;
				bufferData[3 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V] = v2;
			} else {
				bufferData[0 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U] = u;
				bufferData[0 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V] = vCenter;

				bufferData[1 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U] = uCenter;
				bufferData[1 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V] = v2;

				bufferData[2 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U] = uCenter;
				bufferData[2 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V] = v;

				bufferData[3 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U] = u2;
				bufferData[3 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V] = vCenter;
			}

			this.setDirtyOnHardware();
		}

		// ===========================================================
		// Methods
		// ===========================================================

		// ===========================================================
		// Inner and Anonymous Classes
		// ===========================================================
	}

	public static class LowMemoryDiamondSpriteVertexBufferObject extends LowMemorySpriteVertexBufferObject implements IDiamondSpriteVertexBufferObject {
		// ===========================================================
		// Constants
		// ===========================================================

		// ===========================================================
		// Fields
		// ===========================================================

		// ===========================================================
		// Constructors
		// ===========================================================

		public LowMemoryDiamondSpriteVertexBufferObject(final VertexBufferObjectManager pVertexBufferObjectManager, final int pCapacity, final DrawType pDrawType, final boolean pAutoDispose, final VertexBufferObjectAttributes pVertexBufferObjectAttributes) {
			super(pVertexBufferObjectManager, pCapacity, pDrawType, pAutoDispose, pVertexBufferObjectAttributes);
		}

		// ===========================================================
		// Getter & Setter
		// ===========================================================

		// ===========================================================
		// Methods for/from SuperClass/Interfaces
		// ===========================================================

		@Override
		public void onUpdateVertices(final Sprite pSprite) {
			final FloatBuffer bufferData = this.mFloatBuffer;

			final float x = 0;
			final float y = 0;
			final float x2 = pSprite.getWidth(); // TODO Optimize with field access?
			final float y2 = pSprite.getHeight(); // TODO Optimize with field access?

			final float xCenter = (x + x2) * 0.5f;
			final float yCenter = (y + y2) * 0.5f;

			bufferData.put(0 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_X, x);
			bufferData.put(0 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_Y, yCenter);

			bufferData.put(1 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_X, xCenter);
			bufferData.put(1 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_Y, y2);

			bufferData.put(2 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_X, xCenter);
			bufferData.put(2 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_Y, y);

			bufferData.put(3 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_X, x2);
			bufferData.put(3 * Sprite.VERTEX_SIZE + Sprite.VERTEX_INDEX_Y, yCenter);

			this.setDirtyOnHardware();
		}

		@Override
		public void onUpdateTextureCoordinates(final Sprite pSprite) {
			final FloatBuffer bufferData = this.mFloatBuffer;

			final ITextureRegion textureRegion = pSprite.getTextureRegion();

			final float u;
			final float v;
			final float u2;
			final float v2;

			if(pSprite.isFlippedVertical()) { // TODO Optimize with field access?
				if(pSprite.isFlippedHorizontal()) { // TODO Optimize with field access?
					u = textureRegion.getU2();
					u2 = textureRegion.getU();
					v = textureRegion.getV2();
					v2 = textureRegion.getV();
				} else {
					u = textureRegion.getU();
					u2 = textureRegion.getU2();
					v = textureRegion.getV2();
					v2 = textureRegion.getV();
				}
			} else {
				if(pSprite.isFlippedHorizontal()) { // TODO Optimize with field access?
					u = textureRegion.getU2();
					u2 = textureRegion.getU();
					v = textureRegion.getV();
					v2 = textureRegion.getV2();
				} else {
					u = textureRegion.getU();
					u2 = textureRegion.getU2();
					v = textureRegion.getV();
					v2 = textureRegion.getV2();
				}
			}

			final float uCenter = (u + u2) * 0.5f;
			final float vCenter = (v + v2) * 0.5f;

			if(textureRegion.isRotated()) {
				bufferData.put(0 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U, uCenter);
				bufferData.put(0 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V, v);

				bufferData.put(1 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U, u);
				bufferData.put(1 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V, vCenter);

				bufferData.put(2 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U, u2);
				bufferData.put(2 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V, vCenter);

				bufferData.put(3 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U, uCenter);
				bufferData.put(3 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V, v2);
			} else {
				bufferData.put(0 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U, u);
				bufferData.put(0 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V, vCenter);

				bufferData.put(1 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U, uCenter);
				bufferData.put(1 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V, v2);

				bufferData.put(2 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U, uCenter);
				bufferData.put(2 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V, v);

				bufferData.put(3 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_U, u2);
				bufferData.put(3 * Sprite.VERTEX_SIZE + Sprite.TEXTURECOORDINATES_INDEX_V, vCenter);
			}

			this.setDirtyOnHardware();
		}

		// ===========================================================
		// Methods
		// ===========================================================

		// ===========================================================
		// Inner and Anonymous Classes
		// ===========================================================
	}
}

  

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