X-Git-Url: http://git.tdb.fi/?p=libs%2Fmath.git;a=blobdiff_plain;f=source%2Fgeometry%2Fextrudedshape.h;h=e702f90a7a0f844d93f417b53d38a8c6aea2359a;hp=78dfa4911463e57951eaa0ca4524c223ab9ce9b5;hb=a29d2c17ca70a3ed5df1e863c92ccd851d5dba6b;hpb=7de28b9c89ca4554f5c12746f481f5b385529479

diff --git a/source/geometry/extrudedshape.h b/source/geometry/extrudedshape.h
index 78dfa49..e702f90 100644
--- a/source/geometry/extrudedshape.h
+++ b/source/geometry/extrudedshape.h
@@ -35,6 +35,7 @@ public:
 	virtual bool contains(const LinAl::Vector<T, D> &) const;
 	virtual unsigned get_max_ray_intersections() const;
 	virtual unsigned get_intersections(const Ray<T, D> &, SurfacePoint<T, D> *, unsigned) const;
+	virtual Coverage get_coverage(const BoundingBox<T, D> &) const;
 };
 
 template<typename T, unsigned D>
@@ -187,6 +188,24 @@ inline unsigned ExtrudedShape<T, D>::get_intersections(const Ray<T, D> &ray, Sur
 	return n;
 }
 
+template<typename T, unsigned D>
+inline Coverage ExtrudedShape<T, D>::get_coverage(const BoundingBox<T, D> &bbox) const
+{
+	T half_length = length/T(2);
+	if(bbox.get_maximum_coordinate(D-1)<-half_length || bbox.get_minimum_coordinate(D-1)>half_length)
+		return NO_COVERAGE;
+
+	BoundingBox<T, D-1> base_bbox(bbox.get_minimum_point().template slice<D-1>(0), bbox.get_maximum_point().template slice<D-1>(0));
+	Coverage coverage = base->get_coverage(base_bbox);
+	if(coverage==NO_COVERAGE)
+		return NO_COVERAGE;
+
+	if(bbox.get_minimum_coordinate(D-1)<-half_length || bbox.get_maximum_coordinate(D-1)>half_length)
+		return PARTIAL_COVERAGE;
+	else
+		return coverage;
+}
+
 } // namespace Geometry
 } // namespace Msp