Use fuzzy comparison for stroke join determination.

QuLogic · QuLogic · commit 8dba6d00d8ea · 2017-12-10T05:08:34.000-05:00
This sometimes produces something just slightly different from 0
compared to x86(_64).
diff --git a/extern/agg24-svn/include/agg_math_stroke.h b/extern/agg24-svn/include/agg_math_stroke.h
@@ -391,7 +391,8 @@ namespace agg
         vc.remove_all();
 
         double cp = cross_product(v0.x, v0.y, v1.x, v1.y, v2.x, v2.y);
-        if(cp != 0 && (cp > 0) == (m_width > 0))
+        if ((cp > agg::vertex_dist_epsilon && m_width > 0) ||
+            (cp < -agg::vertex_dist_epsilon && m_width < 0))
         {
             // Inner join
             //---------------

Original file line number	Diff line number	Diff line change
`@@ -391,7 +391,8 @@ namespace agg`
`391`	`391`	`vc.remove_all();`
`392`	`392`
`393`	`393`	`double cp = cross_product(v0.x, v0.y, v1.x, v1.y, v2.x, v2.y);`
`394`		`- if(cp != 0 && (cp > 0) == (m_width > 0))`
	`394`	`+ if ((cp > agg::vertex_dist_epsilon && m_width > 0) \|\|`
	`395`	`+ (cp < -agg::vertex_dist_epsilon && m_width < 0))`
`395`	`396`	`{`
`396`	`397`	`// Inner join`
`397`	`398`	`//---------------`