X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftrunk%2Fsrc%2Fmodules%2Fexample%2Fmetaballs.cpp;h=b365ea5834f241a0bce29865f0b123dc686b315c;hb=6e91754512f0ae9303be32b3bca06904e3866e4f;hp=74fb884e125901f662ae5ee23ae6b3fabf42bfbd;hpb=8ef042c40521681cea99944097c4f90a5ac6cf74;p=synfig.git

diff --git a/synfig-core/trunk/src/modules/example/metaballs.cpp b/synfig-core/trunk/src/modules/example/metaballs.cpp
index 74fb884..b365ea5 100644
--- a/synfig-core/trunk/src/modules/example/metaballs.cpp
+++ b/synfig-core/trunk/src/modules/example/metaballs.cpp
@@ -1,6 +1,6 @@
 /* === S Y N F I G ========================================================= */
 /*!	\file metaballs.cpp
-**	\brief Implements metaballs
+**	\brief Implementation of the "Metaballs" layer
 **
 **	$Id$
 **
@@ -54,7 +54,7 @@ using namespace synfig;
 SYNFIG_LAYER_INIT(Metaballs);
 SYNFIG_LAYER_SET_NAME(Metaballs,"metaballs");
 SYNFIG_LAYER_SET_LOCAL_NAME(Metaballs,N_("Metaballs"));
-SYNFIG_LAYER_SET_CATEGORY(Metaballs,N_("Default"));
+SYNFIG_LAYER_SET_CATEGORY(Metaballs,N_("Example"));
 SYNFIG_LAYER_SET_VERSION(Metaballs,"0.1");
 SYNFIG_LAYER_SET_CVS_ID(Metaballs,"$Id$");
 
@@ -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
@@ -166,9 +169,7 @@ Metaballs::totaldensity(const Point &pos) const
 
 	//sum up weighted functions
 	for(unsigned int i=0;i<centers.size();i++)
-	{
 		density += weights[i] * densityfunc(pos,centers[i], radii[i]);
-	}
 
 	return density;
 }
@@ -176,10 +177,13 @@ Metaballs::totaldensity(const Point &pos) const
 Color
 Metaballs::get_color(Context context, const Point &pos)const
 {
-	Real dens = totaldensity(pos);
-
-	if(dens >= threshold)
-		return color;
+	if (totaldensity(pos) >= threshold)
+	{
+		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);
 }
@@ -188,27 +192,14 @@ bool
 Metaballs::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 {
 	// Width and Height of a pixel
-	const Point br(renddesc.get_br()),
-				tl(renddesc.get_tl());
-
-	const int 	w = renddesc.get_w(),
-				h = renddesc.get_h();
-
-	Real	pw = renddesc.get_pw();
-	Real	ph = renddesc.get_ph();
+	const Point br(renddesc.get_br()), tl(renddesc.get_tl());
+	const int 	 w(renddesc.get_w()), 	h(renddesc.get_h());
+	const Real	pw(renddesc.get_pw()), ph(renddesc.get_ph());
 
 	SuperCallback supercb(cb,0,9000,10000);
 
-	if(!context.accelerated_render(surface,quality,renddesc,&supercb))
-	{
-		if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
-		return false;
-	}
-
 	Point pos(tl[0],tl[1]);
 
-	Real	dens;
-
 	if(!context.accelerated_render(surface,quality,renddesc,&supercb))
 	{
 		if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
@@ -219,14 +210,8 @@ Metaballs::accelerated_render(Context context,Surface *surface,int quality, cons
 	{
 		pos[0] = tl[0];
 		for(int x = 0; x < w; x++, pos[0] += pw)
-		{
-			dens = totaldensity(pos);
-
-			if(dens >= threshold)
-			{
+			if (totaldensity(pos) >= threshold)
 				(*surface)[y][x] = Color::blend(color,(*surface)[y][x],get_amount(),get_blend_method());
-			}
-		}
 	}
 
 	// Mark our progress as finished