From: dooglus <dooglus@1f10aa63-cdf2-0310-b900-c93c546f37ac>
Date: Tue, 4 Nov 2008 20:11:06 +0000 (+0000)
Subject: Revision 1150 stopped synfig-core/trunk/examples/star.sifz from rendering correctly... 
X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=8c959946a8e6cacbc91a42b468af71b399cf014c;p=synfig.git

Revision 1150 stopped synfig-core/trunk/examples/star.sifz from rendering correctly.  This fixes it.


git-svn-id: https://synfig.svn.sourceforge.net/svnroot/synfig@2149 1f10aa63-cdf2-0310-b900-c93c546f37ac
---

diff --git a/synfig-core/trunk/src/synfig/valuenode_bline.cpp b/synfig-core/trunk/src/synfig/valuenode_bline.cpp
index a5dc1de..dde8a45 100644
--- a/synfig-core/trunk/src/synfig/valuenode_bline.cpp
+++ b/synfig-core/trunk/src/synfig/valuenode_bline.cpp
@@ -79,7 +79,12 @@ radial_interpolation(const Vector& a, const Vector& b, float c)
 	affine_combo<Angle,float> ang_combo;
 
 	Real mag(mag_combo(a.mag(),b.mag(),c));
-	Angle ang(ang_combo(Angle::tan(a[1],a[0]),Angle::tan(b[1],b[0]),c));
+	Angle angle_a(Angle::tan(a[1],a[0]));
+	Angle angle_b(Angle::tan(b[1],b[0]));
+	float diff = Angle::deg(angle_b - angle_a).get();
+	if (diff < -180) angle_b += Angle::deg(360);
+	else if (diff > 180) angle_a += Angle::deg(360);
+	Angle ang(ang_combo(angle_a, angle_b, c));
 
 	return Point( mag*Angle::cos(ang).get(),mag*Angle::sin(ang).get() );
 }