Shortcut color blending in get_color() when blend method is 'straight' and amount...

[synfig.git] / synfig-core / trunk / src / modules / example / metaballs.cpp

diff --git a/synfig-core/trunk/src/modules/example/metaballs.cpp b/synfig-core/trunk/src/modules/example/metaballs.cpp
index 76ebf76..b365ea5 100644 (file)
--- a/synfig-core/trunk/src/modules/example/metaballs.cpp
+++ b/synfig-core/trunk/src/modules/example/metaballs.cpp
@@ -68,6 +68,9 @@ Metaballs::Metaballs():
        Layer_Composite(1.0,Color::BLEND_STRAIGHT),
        color(Color::black())
 {
+       centers.push_back(Point( 0, -1.5));     radii.push_back(2.5);   weights.push_back(1);
+       centers.push_back(Point(-2,  1));       radii.push_back(2.5);   weights.push_back(1);
+       centers.push_back(Point( 2,  1));       radii.push_back(2.5);   weights.push_back(1);
 }
 
 bool
@@ -175,7 +178,12 @@ Color
 Metaballs::get_color(Context context, const Point &pos)const
 {
        if (totaldensity(pos) >= threshold)
-               return Color::blend(color,context.get_color(pos),get_amount(),get_blend_method());
+       {
+               if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
+                       return color;
+               else
+                       return Color::blend(color,context.get_color(pos),get_amount(),get_blend_method());
+       }
        else
                return context.get_color(pos);
 }