public static void Vertical(FastBitmap bmp, Rectangle rect,
PackedCol a, PackedCol b)
{
int x, y, width, height;
if (!Drawer2DExt.ClampCoords(bmp, rect, out x, out y,
out width, out height))
{
return;
}
PackedCol c = a;
for (int yy = 0; yy < height; yy++)
{
int * row = bmp.GetRowPtr(y + yy);
float t = (float)yy / (height - 1); // so last row has b as its colour
c.R = (byte)Utils.Lerp(a.R, b.R, t);
c.G = (byte)Utils.Lerp(a.G, b.G, t);
c.B = (byte)Utils.Lerp(a.B, b.B, t);
int pixel = c.ToArgb();
for (int xx = 0; xx < width; xx++)
{
row[x + xx] = pixel;
}
}
}
unsafe void CalculatePalette(int *palette)
{
for (int i = 0; i < Palette.Length; i++)
{
PackedCol col = Palette[i];
if (!Active)
{
col = PackedCol.Scale(col, 0.7f);
}
palette[i] = col.ToArgb();
}
}
public static void Clear(FastBitmap bmp, Rectangle rect, PackedCol col)
{
int x, y, width, height;
if (!ClampCoords(bmp, rect, out x, out y, out width, out height))
{
return;
}
int pixel = col.ToArgb();
for (int yy = 0; yy < height; yy++)
{
int *row = bmp.GetRowPtr(y + yy);
for (int xx = 0; xx < width; xx++)
{
row[x + xx] = pixel;
}
}
}
