lighttroupe/luz

class ActorEffectColorFromImage < ActorEffect
    title                "Color from Image"
    description "Colors actor with a color picked from a chosen X,Y position within a chosen image."

    categories :color

    setting 'image', :image
    setting 'x', :float, :range => -100.0..100.0, :default => 0.0..1.0
    setting 'y', :float, :range => -100.0..100.0, :default => 0.0..1.0
    setting 'alpha', :float, :range => 0.0..1.0, :default => 1.0..0.0

    def render
        color = image.color_at(x % 1.0, y % 1.0)
        a = color.to_a
        a[3] = alpha
        with_color(a) {
            yield
        }
    end
end