private unsafe static void BitmapToRGBColorMatrix(Bitmap img, ref RGBColor[,] textureMatrix)
{
using (img) {
BitmapData imgData = img.LockBits(new Rectangle(0, 0, img.Width, img.Height), ImageLockMode.ReadOnly,
img.PixelFormat);
byte bitsPerPixel = GetBitsPerPixel(imgData.PixelFormat);
byte *scan0 = (byte *)imgData.Scan0.ToPointer();
for (int x = 0; x < imgData.Height; ++x)
{
for (int y = 0; y < imgData.Width; ++y)
{
byte *data = scan0 + x * imgData.Stride + y * bitsPerPixel / 8;
textureMatrix[y, x] = new RGBColor(data[2], data[1], data[0]);
textureMatrix[y, x].Normalize();
}
}
img.UnlockBits(imgData);
}
}
public RGBColor GetPixel(float x, float y)
{
int pixelX1 = (int)Math.Floor(x);
int pixelX2 = (int)Math.Ceiling(x);
float xLerp = x - (float)Math.Truncate(x);
int pixelY1 = (int)Math.Floor(y);
int pixelY2 = (int)Math.Ceiling(y);
float yLerp = y - (float)Math.Truncate(y);
RGBColor c11 = GetPixel(pixelX1, pixelY1);
RGBColor c12 = GetPixel(pixelX1, pixelY2);
RGBColor c21 = GetPixel(pixelX2, pixelY1);
RGBColor c22 = GetPixel(pixelX2, pixelY2);
return(c11 * (1 - xLerp) * (1 - yLerp)
+ c12 * (1 - xLerp) * yLerp
+ c21 * xLerp * (1 - yLerp)
+ c22 * xLerp * yLerp);
}
public static HSBColor FromColor(RGBColor rgbColor)
{
return(FromColor(rgbColor.ToColor()));
}
public static RGBColor ToRGBColor(HSBColor hsbColor)
{
return(RGBColor.FromColor(ToColor(hsbColor)));
}
