/// <summary>
/// 切割一張指定的圖片
/// </summary>
/// <param name="source">指定的圖片源</param>
/// <param name="tileWidth">圖塊寬度</param>
/// <param name="tileHeight">圖塊高度</param>
/// <returns>切割好的圖片數(shù)組（從左往右，從上往下）</returns>
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;
}
用法： SplitImage(new BitmapImage(new Uri("E:/Graphics/Characters/a.png")), 70, 101)

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