@Override
public void blend(Color source, Color dest, Color output) {
output.r = (dest.r == 1) ? 1 : source.r / (1 - dest.r);
output.g = (dest.g == 1) ? 1 : source.g / (1 - dest.g);
output.b = (dest.b == 1) ? 1 : source.b / (1 - dest.b);
output.a = dest.a;
output.clamp();
}
@Override
public void blend(Color source, Color dest, Color output) {
output.r = min(source.r, dest.r);
output.g = min(source.g, dest.g);
output.b = min(source.b, dest.b);
output.a = dest.a;
output.clamp();
}
@Override
public void blend(Color source, Color dest, Color output) {
output.r = (1 - ((1 - dest.r) * (1 - source.r)));
output.g = (1 - ((1 - dest.g) * (1 - source.g)));
output.b = (1 - ((1 - dest.b) * (1 - source.b)));
output.a = dest.a;
output.clamp();
}
// TCOD_BKGND_OVERLAY
@Override
public void blend(Color source, Color dest, Color output) {
output.r = source.r <= 0.5 ? 2 * (source.r) * dest.r : 1 - 2 * (1 - source.r) * (1 - dest.r);
output.g = source.g <= 0.5 ? 2 * (source.g) * dest.g : 1 - 2 * (1 - source.g) * (1 - dest.g);
output.b = source.b <= 0.5 ? 2 * (source.b) * dest.b : 1 - 2 * (1 - source.b) * (1 - dest.b);
output.a = dest.a;
output.clamp();
}
// JCOD Extension
@Override
public void blend(Color source, Color dest, Color output) {
output.r = source.r * source.a + dest.r * (1 - source.a);
output.g = source.g * source.a + dest.g * (1 - source.a);
output.b = source.b * source.a + dest.b * (1 - source.a);
output.a = dest.a;
output.clamp();
}
@Override
public void blend(Color source, Color dest, Color output) {
output.r = (source.r == 0) ? 0 : 1 - (1 - dest.r) / source.r;
output.g = (source.g == 0) ? 0 : 1 - (1 - dest.g) / source.g;
output.b = (source.b == 0) ? 0 : 1 - (1 - dest.b) / source.b;
output.a = dest.a;
output.clamp();
}
@Override
public void blend(Color source, Color dest, Color output) {
// can't use set/add/sub methods, they clamp too soon
output.r = source.r + dest.r - 1;
output.g = source.g + dest.g - 1;
output.b = source.b + dest.b - 1;
output.a = dest.a;
output.clamp();
}
// *back = TCOD_color_lerp(*back,col,(float)(alpha/255.0f));
@Override
public void blend(Color source, Color dest, Color output) {
lerp(dest, source, source.a, output);
output.a = dest.a;
output.clamp();
}