示例#1
0
Light Light::reflect_on(const rt::color& color) const {
  return Light(
    color.get_red() / 255.0 * red,
    color.get_green() / 255.0 * green,
    color.get_blue() / 255.0 * blue
  );
}
示例#2
0
rt::color compose(const rt::color& c1, const rt::color& c2) {
    rt::color inv_c1(255-c1.get_red(), 255-c1.get_green(), 255-c1.get_blue(), 255-c1.get_alpha());
    return rt::color(
        c2.get_red()-std::min(inv_c1.get_red(), c2.get_red()),
        c2.get_green()-std::min(inv_c1.get_green(), c2.get_green()),
        c2.get_blue()-std::min(inv_c1.get_blue(), c2.get_blue())
        );
}
示例#3
0
Light::Light(const rt::color& color) :
  red(light_component_of_color_component(color.get_red())),
  green(light_component_of_color_component(color.get_green())),
  blue(light_component_of_color_component(color.get_blue())) {
}