/// <summary>
/// subtract all colors of this texture from textToSub
/// </summary>
/// <param name="texToSub"></param> GameTexture to subrtact
public void subTexture(GameTexture texToSub)
{
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
GameColor color = texToSub.GetPixel(x, y);
if (color.Equals(new GameColor("black")))
{
blackLayers[x, y]--;
}
else if (!color.Equals(new GameColor("clear")))
{
blackLayers[x, y] = 0;
}
if (blackLayers[x, y] > 0)
{
totalColors[x, y] = new GameColor("black");
}
else if (blackLayers[x, y] < 0)
{
totalColors[x, y] = new GameColor("clear");
}
else
{
totalColors[x, y] = GetPixel(x, y).subtract(color);
}
}
}
}
