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【CSharp】 c#分割图片

作者:Dezai.CN / 发布于2013/5/13/ 634


	public static class ImageSplitTool
	 {
	 public static ImageSource[] SplitImage(BitmapSource source, int tileWidth, int tileHeight)
	 {
	 var colCount = source.PixelWidth / tileWidth;
	 var rowCount = source.PixelHeight / tileHeight;
	 var results = new ImageSource[rowCount * colCount];
	 var stride = tileWidth * ((source.Format.BitsPerPixel + 7) / 8);
	 var pixelsCount = tileWidth * tileHeight;
	 var tileRect = new Int32Rect(0, 0, tileWidth, tileHeight);

	 for (int row = 0; row < rowCount; row++)
	 {
	 for (int col = 0; col < colCount; col++)
	 {
	 var pixels = new int[pixelsCount];
	 var copyRect = new Int32Rect(col * tileWidth, row * tileHeight, tileWidth, tileHeight);
	 source.CopyPixels(copyRect, pixels, stride, 0);
	 var wb = new WriteableBitmap(
	 tileWidth,
	 tileHeight,
	 source.DpiX,
	 source.DpiY,
	 source.Format,
	 source.Palette);
	 wb.Lock();
	 wb.WritePixels(tileRect, pixels, stride, 0);
	 wb.Unlock();

	 results[row * colCount + col] = wb;
	 }
	 }

	 return results;
	 }
	 }

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