X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftrunk%2Fsrc%2Fmodules%2Fmod_gradient%2Fradialgradient.cpp;h=c52616fed1aa6695f98ba7e07525adcab521b4da;hb=05325009d7c144099bb06a0bff8e2af04c51690c;hp=f4fe9402fffb1c99b758a99fa164ab2352c6d71d;hpb=5ddcf36f04cfbd10fabda4e3c5633cb27cdd4c0a;p=synfig.git

diff --git a/synfig-core/trunk/src/modules/mod_gradient/radialgradient.cpp b/synfig-core/trunk/src/modules/mod_gradient/radialgradient.cpp
index f4fe940..c52616f 100644
--- a/synfig-core/trunk/src/modules/mod_gradient/radialgradient.cpp
+++ b/synfig-core/trunk/src/modules/mod_gradient/radialgradient.cpp
@@ -1,11 +1,12 @@
 /* === S Y N F I G ========================================================= */
-/*!	\file layer_solidcolor.cpp
+/*!	\file mod_gradient/radialgradient.cpp
 **	\brief Template Header
 **
-**	$Id: radialgradient.cpp,v 1.1.1.1 2005/01/04 01:23:10 darco Exp $
+**	$Id$
 **
 **	\legal
 **	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**	Copyright (c) 2007 Chris Moore
 **
 **	This package is free software; you can redistribute it and/or
 **	modify it under the terms of the GNU General Public License as
@@ -55,7 +56,7 @@ SYNFIG_LAYER_SET_NAME(RadialGradient,"radial_gradient");
 SYNFIG_LAYER_SET_LOCAL_NAME(RadialGradient,_("Radial Gradient"));
 SYNFIG_LAYER_SET_CATEGORY(RadialGradient,_("Gradients"));
 SYNFIG_LAYER_SET_VERSION(RadialGradient,"0.1");
-SYNFIG_LAYER_SET_CVS_ID(RadialGradient,"$Id: radialgradient.cpp,v 1.1.1.1 2005/01/04 01:23:10 darco Exp $");
+SYNFIG_LAYER_SET_CVS_ID(RadialGradient,"$Id$");
 
 /* === P R O C E D U R E S ================================================= */
 
@@ -125,7 +126,7 @@ RadialGradient::get_param_vocab()const
 	);
 
 	ret.push_back(ParamDesc("zigzag")
-		.set_local_name(_("Zig-Zag"))
+		.set_local_name(_("ZigZag"))
 	);
 
 	return ret;
@@ -149,14 +150,20 @@ RadialGradient::color_func(const Point &point, float supersample)const
 
 		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);
+			if (zigzag) pool+=gradient(1.0-right*0.5,right).premult_alpha()*right/supersample;
+			else		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);
+			if (zigzag) pool+=gradient(left*0.5,left).premult_alpha()*left/supersample;
+			else		pool+=gradient(1.0-left*0.5,left).premult_alpha()*left/supersample;
 			return pool.demult_alpha();
 		}
 	}
@@ -166,7 +173,7 @@ RadialGradient::color_func(const Point &point, float supersample)const
 
 
 float
-RadialGradient::calc_supersample(const synfig::Point &x, float pw,float ph)const
+RadialGradient::calc_supersample(const synfig::Point &/*x*/, float pw,float /*ph*/)const
 {
 //	return sqrt(pw*pw+ph*ph)/radius;
 	return 1.2*pw/radius;