X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fgeometry%2Fhalfspace.h;h=09ec62ce600b9258b1044a0113a61251f5c424aa;hb=a29d2c17ca70a3ed5df1e863c92ccd851d5dba6b;hp=b439851bd5adaf3a7067c7f91f5bf8308bb01166;hpb=7de28b9c89ca4554f5c12746f481f5b385529479;p=libs%2Fmath.git

diff --git a/source/geometry/halfspace.h b/source/geometry/halfspace.h
index b439851..09ec62c 100644
--- a/source/geometry/halfspace.h
+++ b/source/geometry/halfspace.h
@@ -28,6 +28,7 @@ public:
 	virtual bool contains(const LinAl::Vector<T, D> &) const;
 	virtual unsigned get_max_ray_intersections() const { return 1; }
 	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>
@@ -85,6 +86,25 @@ inline unsigned HalfSpace<T, D>::get_intersections(const Ray<T, D> &ray, Surface
 	return 0;
 }
 
+template<typename T, unsigned D>
+inline Coverage HalfSpace<T, D>::get_coverage(const BoundingBox<T, D> &bbox) const
+{
+	LinAl::Vector<T, D> low_point;
+	LinAl::Vector<T, D> high_point;
+	for(unsigned i=0; i<D; ++i)
+	{
+		low_point[i] = (normal[i]>=T(0) ? bbox.get_minimum_coordinate(i) : bbox.get_maximum_coordinate(i));
+		high_point[i] = (normal[i]>=T(0) ? bbox.get_maximum_coordinate(i) : bbox.get_minimum_coordinate(i));
+	}
+
+	if(contains(high_point))
+		return FULL_COVERAGE;
+	else if(contains(low_point))
+		return PARTIAL_COVERAGE;
+	else
+		return NO_COVERAGE;
+}
+
 } // namespace Geometry
 } // namespace Msp