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我想用指定的調色板創建3x1位圖。爲了測試,我使用了3種顏色:紅色,綠色和藍色。當我運行我的代碼時,我所得到的全是紅色(這是第一種顏色)。如何從pixeldata和調色板構建indexed8位圖
這是我的代碼
public void CreateTestImg()
{
// List to store colors for palette
List<Color> Colors = new List<Color>();
// Adds Red to the list
Colors.Add(Media.Color.FromArgb(255, 255, 0, 0));
// Adds Green to the list
Colors.Add(Media.Color.FromArgb(255, 0, 255, 0));
// Adds Blue to the list
Colors.Add(Media.Color.FromArgb(255, 0, 0, 255));
// Create a new palette with the list of colors as input
BitmapPalette PLT = new BitmapPalette(Colors);
// Make a Bitmap with the specified width, height, dpix, dpiy, pixelformat, palette, PixelData, stride.
BitmapSource wb = BitmapSource.Create(3, 1, 96, 96, PixelFormats.Indexed8, PLT, {0, 1, 2}, 3);
// Freezes the object
wb.Freeze();
// Creates a new brush from the Bitmap so I can draw with it later
ImageBrush newBMB = new ImageBrush(wb);
// Freezes the brush
newBMB.Freeze();
// Adds brush to dictionary for later referencing
ImageBatch.Add("WHATEVER", newBMB);
}
PixelFormats.Indexed8指的是8位或256色調色板。你的顏色是32位? – Kris
@Kris是不是假設在調色板中存儲256種顏色,並且像素數據通過索引引用調色板中的顏色?這是我從文檔中理解的:https://msdn.microsoft.com/en-us/library/system.windows.media.pixelformats.indexed8%28v=vs.110%29.aspx – TizzyT455