...

diff --git a/MagickCore/draw.c b/MagickCore/draw.c
index 3bea06dfb47cdae3dc6a053f5cee8985a4b832b4..db211a9395ed5a3cf459c31545a2d4dfbd317e86 100644 (file)
--- a/MagickCore/draw.c
+++ b/MagickCore/draw.c
@@ -6014,7 +6014,7 @@ static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
     return(TracePoint(primitive_info,end));
   radii.x=fabs(arc.x);
   radii.y=fabs(arc.y);
-  if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
+  if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
     return(TraceLine(primitive_info,start,end));
   cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
   sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
@@ -6023,7 +6023,7 @@ static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
   delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
     (radii.y*radii.y);
   if (delta < MagickEpsilon)
-     return(TraceLine(primitive_info,start,end));
+    return(TraceLine(primitive_info,start,end));
   if (delta > 1.0)
     {
       radii.x*=sqrt((double) delta);
@@ -6035,6 +6035,8 @@ static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
   points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
   alpha=points[1].x-points[0].x;
   beta=points[1].y-points[0].y;
+  if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
+    return(TraceLine(primitive_info,start,end));
   factor=PerceptibleReciprocal(alpha*alpha+beta*beta)-0.25;
   if (factor <= 0.0)
     factor=0.0;