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Java MathUtils.isPowerOfTwo方法代码示例

本文整理汇总了Java中org.andengine.util.math.MathUtils.isPowerOfTwo方法的典型用法代码示例。如果您正苦于以下问题：Java MathUtils.isPowerOfTwo方法的具体用法？Java MathUtils.isPowerOfTwo怎么用？Java MathUtils.isPowerOfTwo使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.andengine.util.math.MathUtils的用法示例。


在下文中一共展示了MathUtils.isPowerOfTwo方法的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: ETC1Texture

import org.andengine.util.math.MathUtils; //导入方法依赖的package包/类
public ETC1Texture(final TextureManager pTextureManager, final TextureOptions pTextureOptions, final ITextureStateListener pTextureStateListener) throws IOException {
	super(pTextureManager, PixelFormat.RGB_565, pTextureOptions, pTextureStateListener);

	InputStream inputStream = null;
	try {
		inputStream = this.getInputStream();

		this.mETC1TextureHeader = new ETC1TextureHeader(StreamUtils.streamToBytes(inputStream, ETC1.ETC_PKM_HEADER_SIZE));

		if (BuildConfig.DEBUG) {
			if (!(MathUtils.isPowerOfTwo(this.mETC1TextureHeader.mWidth) && MathUtils.isPowerOfTwo(this.mETC1TextureHeader.mHeight))) {
				Debug.w("ETC1 textures with NPOT sizes can cause a crash on PowerVR GPUs!");
			}
		}
	} finally {
		StreamUtils.close(inputStream);
	}
}
开发者ID:ArturVasilov，项目名称:AndroidCourses，代码行数:19，代码来源:ETC1Texture.java

示例2: update

import org.andengine.util.math.MathUtils; //导入方法依赖的package包/类
public synchronized void update(final GLState pGLState) {
	if (this.mTexture.isLoadedToHardware()) {
		final ArrayList<Letter> lettersPendingToBeDrawnToTexture = this.mLettersPendingToBeDrawnToTexture;
		if (lettersPendingToBeDrawnToTexture.size() > 0) {
			this.mTexture.bind(pGLState);
			final PixelFormat pixelFormat = this.mTexture.getPixelFormat();

			final boolean preMultipyAlpha = this.mTexture.getTextureOptions().mPreMultiplyAlpha;
			for (int i = lettersPendingToBeDrawnToTexture.size() - 1; i >= 0; i--) {
				final Letter letter = lettersPendingToBeDrawnToTexture.get(i);
				if (!letter.isWhitespace()) {
					final Bitmap bitmap = this.getLetterBitmap(letter);

					final boolean useDefaultAlignment = MathUtils.isPowerOfTwo(bitmap.getWidth()) && MathUtils.isPowerOfTwo(bitmap.getHeight()) && (pixelFormat == PixelFormat.RGBA_8888);
					if (!useDefaultAlignment) {
						/* Adjust unpack alignment. */
						GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, 1);
					}

					if (preMultipyAlpha) {
						GLUtils.texSubImage2D(GLES20.GL_TEXTURE_2D, 0, letter.mTextureX, letter.mTextureY, bitmap);
					} else {
						pGLState.glTexSubImage2D(GLES20.GL_TEXTURE_2D, 0, letter.mTextureX, letter.mTextureY, bitmap, pixelFormat);
					}

					if (!useDefaultAlignment) {
						/* Restore default unpack alignment. */
						GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, GLState.GL_UNPACK_ALIGNMENT_DEFAULT);
					}

					bitmap.recycle();
				}
			}
			lettersPendingToBeDrawnToTexture.clear();

			System.gc();
		}
	}
}
开发者ID:ArturVasilov，项目名称:AndroidCourses，代码行数:40，代码来源:Font.java

示例3: writeTextureToHardware

import org.andengine.util.math.MathUtils; //导入方法依赖的package包/类
@Override
protected void writeTextureToHardware(final GLState pGLState) throws IOException {
	final Config bitmapConfig = this.mBitmapTextureFormat.getBitmapConfig();
	final Bitmap bitmap = this.onGetBitmap(bitmapConfig);

	if (bitmap == null) {
		throw new NullBitmapException("Caused by: '" + this.toString() + "'.");
	}

	final boolean useDefaultAlignment = MathUtils.isPowerOfTwo(bitmap.getWidth()) && MathUtils.isPowerOfTwo(bitmap.getHeight()) && (this.mPixelFormat == PixelFormat.RGBA_8888);
	if (!useDefaultAlignment) {
		/* Adjust unpack alignment. */
		GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, 1);
	}

	final boolean preMultipyAlpha = this.mTextureOptions.mPreMultiplyAlpha;
	if (preMultipyAlpha) {
		GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0);
	} else {
		pGLState.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0, this.mPixelFormat);
	}

	if (!useDefaultAlignment) {
		/* Restore default unpack alignment. */
		GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, GLState.GL_UNPACK_ALIGNMENT_DEFAULT);
	}

	bitmap.recycle();
}
开发者ID:ArturVasilov，项目名称:AndroidCourses，代码行数:30，代码来源:BitmapTexture.java

示例4: update

import org.andengine.util.math.MathUtils; //导入方法依赖的package包/类
public synchronized void update(final GLState pGLState) {
	if(this.mTexture.isLoadedToHardware()) {
		final ArrayList<Letter> lettersPendingToBeDrawnToTexture = this.mLettersPendingToBeDrawnToTexture;
		if(lettersPendingToBeDrawnToTexture.size() > 0) {
			this.mTexture.bind(pGLState);
			final PixelFormat pixelFormat = this.mTexture.getPixelFormat();

			final boolean preMultipyAlpha = this.mTexture.getTextureOptions().mPreMultiplyAlpha;
			for(int i = lettersPendingToBeDrawnToTexture.size() - 1; i >= 0; i--) {
				final Letter letter = lettersPendingToBeDrawnToTexture.get(i);
				if(!letter.isWhitespace()) {
					final Bitmap bitmap = this.getLetterBitmap(letter);

					final boolean useDefaultAlignment = MathUtils.isPowerOfTwo(bitmap.getWidth()) && MathUtils.isPowerOfTwo(bitmap.getHeight()) && (pixelFormat == PixelFormat.RGBA_8888);
					if(!useDefaultAlignment) {
						/* Adjust unpack alignment. */
						GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, 1);
					}

					if(preMultipyAlpha) {
						GLUtils.texSubImage2D(GLES20.GL_TEXTURE_2D, 0, letter.mTextureX, letter.mTextureY, bitmap);
					} else {
						pGLState.glTexSubImage2D(GLES20.GL_TEXTURE_2D, 0, letter.mTextureX, letter.mTextureY, bitmap, pixelFormat);
					}

					if(!useDefaultAlignment) {
						/* Restore default unpack alignment. */
						GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, GLState.GL_UNPACK_ALIGNMENT_DEFAULT);
					}

					bitmap.recycle();
				}
			}
			lettersPendingToBeDrawnToTexture.clear();

			System.gc();
		}
	}
}
开发者ID:peterchaula，项目名称:ClassicF1，代码行数:40，代码来源:Font.java

示例5: writeTextureToHardware

import org.andengine.util.math.MathUtils; //导入方法依赖的package包/类
@Override
protected void writeTextureToHardware(final GLState pGLState) throws IOException {
	final Config bitmapConfig = this.mBitmapTextureFormat.getBitmapConfig();
	final Bitmap bitmap = this.onGetBitmap(bitmapConfig);

	if(bitmap == null) {
		throw new NullBitmapException("Caused by: '" + this.toString() + "'.");
	}

	final boolean useDefaultAlignment = MathUtils.isPowerOfTwo(bitmap.getWidth()) && MathUtils.isPowerOfTwo(bitmap.getHeight()) && (this.mPixelFormat == PixelFormat.RGBA_8888);
	if(!useDefaultAlignment) {
		/* Adjust unpack alignment. */
		GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, 1);
	}

	final boolean preMultipyAlpha = this.mTextureOptions.mPreMultiplyAlpha;
	if(preMultipyAlpha) {
		GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0);
	} else {
		pGLState.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0, this.mPixelFormat);
	}

	if(!useDefaultAlignment) {
		/* Restore default unpack alignment. */
		GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, GLState.GL_UNPACK_ALIGNMENT_DEFAULT);
	}

	bitmap.recycle();
}
开发者ID:peterchaula，项目名称:ClassicF1，代码行数:30，代码来源:BitmapTexture.java

示例6: writeTextureToHardware

import org.andengine.util.math.MathUtils; //导入方法依赖的package包/类
@Override
protected void writeTextureToHardware(final GLState pGLState) {
	final PixelFormat pixelFormat = this.mBitmapTextureFormat.getPixelFormat();
	final int glInternalFormat = pixelFormat.getGLInternalFormat();
	final int glFormat = pixelFormat.getGLFormat();
	final int glType = pixelFormat.getGLType();

	GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, glInternalFormat, this.mWidth, this.mHeight, 0, glFormat, glType, null);

	final boolean preMultipyAlpha = this.mTextureOptions.mPreMultiplyAlpha;
	/* Non alpha premultiplied bitmaps are loaded with ARGB_8888 and converted down manually. */
	final Config bitmapConfig = (preMultipyAlpha) ? this.mBitmapTextureFormat.getBitmapConfig() : Config.ARGB_8888;

	final ArrayList<IBitmapTextureAtlasSource> textureSources = this.mTextureAtlasSources;
	final int textureSourceCount = textureSources.size();

	final ITextureAtlasStateListener<IBitmapTextureAtlasSource> textureStateListener = this.getTextureAtlasStateListener();
	for (int i = 0; i < textureSourceCount; i++) {
		final IBitmapTextureAtlasSource bitmapTextureAtlasSource = textureSources.get(i);
		try {
			final Bitmap bitmap = bitmapTextureAtlasSource.onLoadBitmap(bitmapConfig);
			if (bitmap == null) {
				throw new NullBitmapException("Caused by: " + bitmapTextureAtlasSource.getClass().toString() + " --> " + bitmapTextureAtlasSource.toString() + " returned a null Bitmap.");
			}

			final boolean useDefaultAlignment = MathUtils.isPowerOfTwo(bitmap.getWidth()) && MathUtils.isPowerOfTwo(bitmap.getHeight()) && pixelFormat == PixelFormat.RGBA_8888;
			if (!useDefaultAlignment) {
				/* Adjust unpack alignment. */
				GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, 1);
			}

			if (preMultipyAlpha) {
				GLUtils.texSubImage2D(GLES20.GL_TEXTURE_2D, 0, bitmapTextureAtlasSource.getTextureX(), bitmapTextureAtlasSource.getTextureY(), bitmap, glFormat, glType);
			} else {
				pGLState.glTexSubImage2D(GLES20.GL_TEXTURE_2D, 0, bitmapTextureAtlasSource.getTextureX(), bitmapTextureAtlasSource.getTextureY(), bitmap, this.mPixelFormat);
			}

			if (!useDefaultAlignment) {
				/* Restore default unpack alignment. */
				GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, GLState.GL_UNPACK_ALIGNMENT_DEFAULT);
			}

			bitmap.recycle();

			if (textureStateListener != null) {
				textureStateListener.onTextureAtlasSourceLoaded(this, bitmapTextureAtlasSource);
			}
		} catch (final NullBitmapException e) {
			if (textureStateListener != null) {
				textureStateListener.onTextureAtlasSourceLoadExeption(this, bitmapTextureAtlasSource, e);
			} else {
				throw e;
			}
		}
	}
}
开发者ID:ArturVasilov，项目名称:AndroidCourses，代码行数:57，代码来源:BitmapTextureAtlas.java

示例7: writeTextureToHardware

import org.andengine.util.math.MathUtils; //导入方法依赖的package包/类
@Override
protected void writeTextureToHardware(final GLState pGLState) {
	final PixelFormat pixelFormat = this.mBitmapTextureFormat.getPixelFormat();
	final int glInternalFormat = pixelFormat.getGLInternalFormat();
	final int glFormat = pixelFormat.getGLFormat();
	final int glType = pixelFormat.getGLType();

	GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0, glInternalFormat, this.mWidth, this.mHeight, 0, glFormat, glType, null);

	final boolean preMultipyAlpha = this.mTextureOptions.mPreMultiplyAlpha;
	/* Non alpha premultiplied bitmaps are loaded with ARGB_8888 and converted down manually. */
	final Config bitmapConfig = (preMultipyAlpha) ? this.mBitmapTextureFormat.getBitmapConfig() : Config.ARGB_8888;

	final ArrayList<IBitmapTextureAtlasSource> textureSources = this.mTextureAtlasSources;
	final int textureSourceCount = textureSources.size();

	final ITextureAtlasStateListener<IBitmapTextureAtlasSource> textureStateListener = this.getTextureAtlasStateListener();
	for(int i = 0; i < textureSourceCount; i++) {
		final IBitmapTextureAtlasSource bitmapTextureAtlasSource = textureSources.get(i);
		try {
			final Bitmap bitmap = bitmapTextureAtlasSource.onLoadBitmap(bitmapConfig);
			if(bitmap == null) {
				throw new NullBitmapException("Caused by: " + bitmapTextureAtlasSource.getClass().toString() + " --> " + bitmapTextureAtlasSource.toString() + " returned a null Bitmap.");
			}

			final boolean useDefaultAlignment = MathUtils.isPowerOfTwo(bitmap.getWidth()) && MathUtils.isPowerOfTwo(bitmap.getHeight()) && pixelFormat == PixelFormat.RGBA_8888;
			if(!useDefaultAlignment) {
				/* Adjust unpack alignment. */
				GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, 1);
			}

			if(preMultipyAlpha) {
				GLUtils.texSubImage2D(GLES20.GL_TEXTURE_2D, 0, bitmapTextureAtlasSource.getTextureX(), bitmapTextureAtlasSource.getTextureY(), bitmap, glFormat, glType);
			} else {
				pGLState.glTexSubImage2D(GLES20.GL_TEXTURE_2D, 0, bitmapTextureAtlasSource.getTextureX(), bitmapTextureAtlasSource.getTextureY(), bitmap, this.mPixelFormat);
			}

			if(!useDefaultAlignment) {
				/* Restore default unpack alignment. */
				GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, GLState.GL_UNPACK_ALIGNMENT_DEFAULT);
			}

			bitmap.recycle();

			if(textureStateListener != null) {
				textureStateListener.onTextureAtlasSourceLoaded(this, bitmapTextureAtlasSource);
			}
		} catch (final NullBitmapException e) {
			if(textureStateListener != null) {
				textureStateListener.onTextureAtlasSourceLoadExeption(this, bitmapTextureAtlasSource, e);
			} else {
				throw e;
			}
		}
	}
}
开发者ID:peterchaula，项目名称:ClassicF1，代码行数:57，代码来源:BitmapTextureAtlas.java


注：本文中的org.andengine.util.math.MathUtils.isPowerOfTwo方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。