X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fgeometry%2Fshape.h;h=7b1d190b5a762b82c7213a012e58190c7ba8d66c;hb=313e10c1dcf5504789cc145166aece93d8141212;hp=1f8176418a4e9a948b460701e6e682d56ae31771;hpb=9260eee3126731c1e6b54ce3407be757d0d71716;p=libs%2Fmath.git

diff --git a/source/geometry/shape.h b/source/geometry/shape.h
index 1f81764..7b1d190 100644
--- a/source/geometry/shape.h
+++ b/source/geometry/shape.h
@@ -16,6 +16,11 @@ class Ray;
 template<typename T, unsigned D>
 class SurfacePoint;
 
+/**
+Base class and interface for geometric shapes.  Shapes may be bounded or
+unbounded.  They are always considered to be solid, i.e. have a distinct inside
+and an outside.
+*/
 template<typename T, unsigned D>
 class Shape
 {
@@ -28,14 +33,20 @@ public:
 
 	virtual HyperBox<T, D> get_axis_aligned_bounding_box() const = 0;
 	virtual bool contains(const LinAl::Vector<T, D> &) const = 0;
-	virtual bool check_intersection(const Ray<T, D> &) const = 0;
+	bool check_intersection(const Ray<T, D> &) const;
 	virtual unsigned get_max_ray_intersections() const = 0;
 	virtual unsigned get_intersections(const Ray<T, D> &, SurfacePoint<T, D> *, unsigned) const = 0;
 	std::vector<SurfacePoint<T, D> > get_intersections(const Ray<T, D> &) const;
 };
 
 template<typename T, unsigned D>
-std::vector<SurfacePoint<T, D> > Shape<T, D>::get_intersections(const Ray<T, D> &ray) const
+inline bool Shape<T, D>::check_intersection(const Ray<T, D> &ray) const
+{
+	return get_intersections(ray, 0, 1);
+}
+
+template<typename T, unsigned D>
+inline std::vector<SurfacePoint<T, D> > Shape<T, D>::get_intersections(const Ray<T, D> &ray) const
 {
 	unsigned max_isect = get_max_ray_intersections();
 	std::vector<SurfacePoint<T, D> > points(max_isect);