Fix IsEffectiveLine calculation

We sometimes represent circles as 360° arcs. These are approximately colinear but are definitely not a line
8 months ago · c24832f72b
1 changed files with 1 additions and 1 deletions
--- a/libs/kimath/src/geometry/shape_arc.cpp
+++ b/libs/kimath/src/geometry/shape_arc.cpp
@ -247,7 +247,7 @@ bool SHAPE_ARC::IsEffectiveLine() const
    SEG v1 = SEG( m_start, m_mid );
    SEG v2 = SEG( m_mid, m_end );

-    return v1.ApproxCollinear( v2 );
+    return v1.ApproxCollinear( v2 ) && (v1.B - v1.A).Dot(v2.B - v2.A) > 0;
 }