Adjust start_nesting in CompositeShape::get_intersections

The intersection points are coalesced to incrementally form a single
composite shape so start_nesting must follow suit.

diff --git a/source/geometry/compositeshape.h b/source/geometry/compositeshape.h
index 0c2c838ec7d13364e6408872cc8dfad113ce5914..0f1dd437c99eee065de8d9720f05ce2573d1a90b 100644 (file)
--- a/source/geometry/compositeshape.h
+++ b/source/geometry/compositeshape.h
@@ -179,6 +179,9 @@ inline unsigned CompositeShape<T, D, O>::get_intersections(const Ray<T, D> &ray,
                        return 0;
 
                n = k;
+
+               if(i!=shapes.begin())
+                       start_nesting = (start_nesting>!Ops::shortcircuit(false));
        }
 
        if(buffer!=points)