X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;ds=sidebyside;f=synfig-core%2Ftrunk%2Fsrc%2Fmodules%2Fmod_gradient%2Fspiralgradient.cpp;fp=synfig-core%2Ftrunk%2Fsrc%2Fmodules%2Fmod_gradient%2Fspiralgradient.cpp;h=0ff63465ef1f4d9e1584ca24eeb971cf48b6fbb2;hb=6cc8cddfa878d0436918fcbcf6d38c0c150b9dd3;hp=c94b6f63863d7b091414dbb117f663a91f4ad162;hpb=f3811d84dcb407eb7c6915d524b3902b9535fb3e;p=synfig.git

diff --git a/synfig-core/trunk/src/modules/mod_gradient/spiralgradient.cpp b/synfig-core/trunk/src/modules/mod_gradient/spiralgradient.cpp
index c94b6f6..0ff6346 100644
--- a/synfig-core/trunk/src/modules/mod_gradient/spiralgradient.cpp
+++ b/synfig-core/trunk/src/modules/mod_gradient/spiralgradient.cpp
@@ -151,14 +151,18 @@ SpiralGradient::color_func(const Point &pos, float supersample)const
 	dist-=floor(dist);
 	if(dist+supersample*0.5>1.0)
 	{
-		Color pool(gradient(dist,supersample*0.5).premult_alpha()*(1.0-(dist-supersample*0.5)));
-		pool+=gradient((dist+supersample*0.5)-1.0,supersample*0.5).premult_alpha()*((dist+supersample*0.5)-1.0);
+		float  left(supersample*0.5-(dist-1.0));
+		float right(supersample*0.5+(dist-1.0));
+		Color pool(gradient(1.0-(left*0.5),left).premult_alpha()*left/supersample);
+		pool+=gradient(right*0.5,right).premult_alpha()*right/supersample;
 		return pool.demult_alpha();
 	}
 	if(dist-supersample*0.5<0.0)
 	{
-		Color pool(gradient(dist,supersample*0.5).premult_alpha()*(dist+supersample*0.5));
-		pool+=gradient(1.0-(dist-supersample*0.5),supersample*0.5).premult_alpha()*(-(dist-supersample*0.5));
+		float  left(supersample*0.5-dist);
+		float right(supersample*0.5+dist);
+		Color pool(gradient(right*0.5,right).premult_alpha()*right/supersample);
+		pool+=gradient(1.0-left*0.5,left).premult_alpha()*left/supersample;
 		return pool.demult_alpha();
 	}