public int Difference(SimpleColor b)
{
return((int)Math.Sqrt(
(R - b.R) * (R - b.R) +
(G - b.G) * (G - b.G) +
(B - b.B) * (B - b.B)
));
}
public FastImage(int w, int h)
{
pixels = new SimpleColor[w, h];
width = w;
height = h;
Parallel.For(0, w, x =>
{
Parallel.For(0, h, y =>
{
pixels[x, y] = new SimpleColor(0, 0, 0, 0);
});
});
}
public FastImage(Image a)
{
pixels = new SimpleColor[a.Width, a.Height];
Bitmap b = (Bitmap)a;
width = b.Width;
height = b.Height;
for (int x = 0; x < b.Width; x++)
{
for (int y = 0; y < b.Height; y++)
{
Color c = b.GetPixel(x, y);
pixels[x, y] = new SimpleColor(c.R, c.G, c.B, ImageGenerationAlgo.Utils.Map(c.A, 0, 255, 0, 1));
}
}
}
public FastImage(FastImage c)
{
pixels = new SimpleColor[c.width, c.height];
width = c.width;
height = c.height;
Parallel.For(0, width, x =>
{
Parallel.For(0, height, y =>
{
SimpleColor color = c.GetPixel(x, y);
pixels[x, y] = new SimpleColor(color.GetR(),
color.GetG(),
color.GetB(),
color.GetA());
});
});
}
public void SetPixel(int x, int y, Color c)
{
pixels[x, y] = SimpleColor.FromColor(c);
}
public SimpleColor SetPixel(int x, int y, SimpleColor c)
{
pixels[x, y].Set(c.GetR(), c.GetG(), c.GetB(), c.GetA());
return(pixels[x, y]);
}
public void DrawLine(int x, int y, int x2, int y2, SimpleColor c)
{
int w = x2 - x;
int h = y2 - y;
int dx1 = 0, dy1 = 0, dx2 = 0, dy2 = 0;
if (w < 0)
{
dx1 = -1;
}
else if (w > 0)
{
dx1 = 1;
}
if (h < 0)
{
dy1 = -1;
}
else if (h > 0)
{
dy1 = 1;
}
if (w < 0)
{
dx2 = -1;
}
else if (w > 0)
{
dx2 = 1;
}
int longest = Math.Abs(w);
int shortest = Math.Abs(h);
if (!(longest > shortest))
{
longest = Math.Abs(h);
shortest = Math.Abs(w);
if (h < 0)
{
dy2 = -1;
}
else if (h > 0)
{
dy2 = 1;
}
dx2 = 0;
}
int numerator = longest >> 1;
for (int i = 0; i <= longest; i++)
{
if (x >= 0 && x < width && y >= 0 && y < height)
{
SetPixel(x, y, c);
}
numerator += shortest;
if (!(numerator < longest))
{
numerator -= longest;
x += dx1;
y += dy1;
}
else
{
x += dx2;
y += dy2;
}
}
}
