//============================================================
// <T>序列化位图的一个区块。</T>
//
// @params output 输出流
// @params colorQuantizer 颜色优化器
// @params rect 序列化的矩形区域
// @params colorCount 颜色数量
//============================================================
protected bool SerializeBlock(IOutput output, IColorQuantizer colorQuantizer, SIntRectangle rect, int colorCount)
{
FByteStream stream = new FByteStream();
int blockWidth = rect.Width;
int blockHeight = rect.Height;
// 写入设置
stream.WriteBool(_optionAlpha);
stream.WriteUint16((ushort)blockWidth);
stream.WriteUint16((ushort)blockHeight);
// 构造调色板
Color[] palette = null;
if (_optionAlpha)
{
palette = colorQuantizer.MakePalette(colorCount).ToArray();
if (0 == palette.Length)
{
RMoCore.TrackConsole.Write(this, "SerializeBlock", "Palette color is empty.");
return(false);
}
}
else
{
List <Color> colorList = colorQuantizer.MakePalette(colorCount);
if (0 == colorList.Count)
{
RMoCore.TrackConsole.Write(this, "SerializeBlock", "Palette color is empty.");
return(false);
}
colorList.Add(Color.FromArgb(0, 0, 0, 0));
palette = colorList.ToArray();
}
// 输出调色板
int paletteCount = palette.Length;
stream.WriteUint16((ushort)paletteCount);
//if(RResourceManager.IsColoPremultiplied) {
// foreach (Color color in palette) {
// if (_optionAlpha) {
// stream.WriteInt32(color.ToArgb() & 0x00FFFFFF);
// } else {
// byte a = color.A;
// byte r = (byte)(((float)color.R * (float)a) / 255.0f);
// byte g = (byte)(((float)color.G * (float)a) / 255.0f);
// byte b = (byte)(((float)color.B * (float)a) / 255.0f);
// stream.WriteInt32(Color.FromArgb(a, r, g, b).ToArgb());
// }
// }
//} else if(RResourceManager.IsColoSkipProcess) {
// int skipAlpha = RResourceManager.ColoSkipAlpha;
// foreach(Color color in palette) {
// if(_optionAlpha) {
// stream.WriteInt32(color.ToArgb() & 0x00FFFFFF);
// } else {
// if(color.A < skipAlpha) {
// stream.WriteInt32(0);
// } else {
// stream.WriteInt32(color.ToArgb());
// }
// }
// }
//} else {
// foreach(Color color in palette) {
// if(_optionAlpha) {
// stream.WriteInt32(color.ToArgb() & 0x00FFFFFF);
// } else {
// stream.WriteInt32(color.ToArgb());
// }
// }
//}
// _logger.Debug(this, "SerializeIndexed", "block_size={0}x{1}, color={2}, alpha={3}", blockWidth, blockHeight, paletteCount, _optionAlpha);
// 输出颜色数组
int x = rect.Left;
int y = rect.Top;
// 透明色索引
int transparentIndex = palette.Length - 1;
int size = blockWidth * blockHeight;
// 写入数组
int postion = 0;
byte[] bytes = null;
if (_optionAlpha)
{
// 写入索引颜色和透明度
bytes = new byte[size * 2];
for (int h = 0; h < blockHeight; h++)
{
for (int w = 0; w < blockWidth; w++)
{
Color color = _bitmap.GetPixel(x + w, y + h);
int index = colorQuantizer.FindPaletteIndex(Color.FromArgb(255, color));
bytes[postion++] = (byte)index;
bytes[postion++] = color.A;
}
}
}
else
{
// 写入带透明的索引颜色
bytes = new byte[size];
for (int h = 0; h < blockHeight; h++)
{
for (int w = 0; w < blockWidth; w++)
{
Color color = _bitmap.GetPixel(x + w, y + h);
int index = colorQuantizer.FindPaletteIndex(color);
bytes[postion++] = (byte)index;
}
}
}
stream.WriteBytes(bytes, 0, postion);
// 写入数据
output.WriteInt32(stream.Length);
output.WriteBytes(stream.Memory, 0, stream.Length);
return(true);
}