private Palette CreateGradient(List<Color> colors, int length)
{
if (colors == null || colors.Count < 2)
{
return null;
}
Palette palette = new Palette(length);
byte[] red = palette.Red;
byte[] green = palette.Green;
byte[] blue = palette.Blue;
int num = length / (colors.Count - 1);
float num1 = 1f / ((float)num);
int index = 0;
Color rgb = colors[0];
int colorR = rgb.R;
int colorG = rgb.G;
int colorB = rgb.B;
for (int i = 1; i < colors.Count; i++)
{
int r = colors[i].R;
int g = colors[i].G;
int b = colors[i].B;
for (int j = 0; j < num; j++)
{
float num2 = j * num1;
int rr = colorR + ((int)((r - colorR) * num2));
int gg = colorG + ((int)((g - colorG) * num2));
int bb = colorB + ((int)((b - colorB) * num2));
red[index] = (byte)(rr > 0xff ? 0xff : ((rr < 0) ? 0 : rr));
green[index] = (byte)(gg > 0xff ? 0xff : ((gg < 0) ? 0 : gg));
blue[index] = (byte)(bb > 0xff ? 0xff : ((bb < 0) ? 0 : bb));
index++;
}
colorR = r;
colorG = g;
colorB = b;
}
if (index < length)
{
red[index] = red[index - 1];
green[index] = green[index - 1];
blue[index] = blue[index - 1];
}
return palette;
}
//@Override
public CustomImage process(CustomImage imageIn)
{
int width = imageIn.getWidth();
int height = imageIn.getHeight();
double d = this.OriginAngleDegree * 0.0174532925;
float cos = (float)Math.Cos(d);
float sin = (float)Math.Sin(d);
float radio = (cos * width) + (sin * height);
float dcos = cos * radio;
float dsin = sin * radio;
int dist = (int)Math.Sqrt((double)((dcos * dcos) + (dsin * dsin)));
dist = Math.Max(Math.Max(dist, width), height);
if ((this.palette == null) || (dist != this.palette.Length))
{
this.palette = this.Gradientf.CreatePalette(dist);
}
byte[] red = this.palette.Red;
byte[] green = this.palette.Green;
byte[] blue = this.palette.Blue;
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
radio = (cos * j) + (sin * i);
dcos = cos * radio;
dsin = sin * radio;
dist = (int)Math.Sqrt((double)((dcos * dcos) + (dsin * dsin)));
imageIn.setPixelColor(j, i, red[dist], green[dist], blue[dist]);
}
}
return imageIn;
}
public void ClearCache()
{
this.palette = null;
}
