X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fgeometry%2Ftransformedshape.h;h=91790fc77276fd8aedbb75f318b856d775334cd2;hb=a29d2c17ca70a3ed5df1e863c92ccd851d5dba6b;hp=74912aa0b904cf1786c2efb7d78f6ec37c56d6d7;hpb=7353dc087872cdb93bd57cbaf2b6f0dcc21f9a03;p=libs%2Fmath.git

diff --git a/source/geometry/transformedshape.h b/source/geometry/transformedshape.h
index 74912aa..91790fc 100644
--- a/source/geometry/transformedshape.h
+++ b/source/geometry/transformedshape.h
@@ -31,11 +31,9 @@ public:
 
 	virtual BoundingBox<T, D> get_axis_aligned_bounding_box() const;
 	virtual bool contains(const LinAl::Vector<T, D> &) const;
-private:
-	Ray<T, D> make_local_ray(const Ray<T, D> &) const;
-public:
 	virtual unsigned get_max_ray_intersections() const { return shape->get_max_ray_intersections(); }
 	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>
@@ -76,26 +74,7 @@ inline TransformedShape<T, D> *TransformedShape<T, D>::clone() const
 template<typename T, unsigned D>
 inline BoundingBox<T, D> TransformedShape<T, D>::get_axis_aligned_bounding_box() const
 {
-	BoundingBox<T, D> inner_bbox = shape->get_axis_aligned_bounding_box();
-
-	LinAl::Vector<T, D> min_pt;
-	LinAl::Vector<T, D> max_pt;
-	for(unsigned i=0; i<(1<<D); ++i)
-	{
-		LinAl::Vector<T, D> point;
-		for(unsigned j=0; j<D; ++j)
-			point[j] = ((i>>j)&1 ? inner_bbox.get_maximum_coordinate(j) : inner_bbox.get_minimum_coordinate(j));
-
-		point = transformation.transform(point);
-
-		for(unsigned j=0; j<D; ++j)
-		{
-			min_pt[j] = std::min(min_pt[j], point[j]);
-			max_pt[j] = std::max(min_pt[j], point[j]);
-		}
-	}
-
-	return BoundingBox<T, D>(min_pt, max_pt);
+	return transformation.transform(shape->get_axis_aligned_bounding_box());
 }
 
 template<typename T, unsigned D>
@@ -104,18 +83,10 @@ inline bool TransformedShape<T, D>::contains(const LinAl::Vector<T, D> &point) c
 	return shape->contains(inverse_trans.transform(point));
 }
 
-template<typename T, unsigned D>
-inline Ray<T, D> TransformedShape<T, D>::make_local_ray(const Ray<T, D> &ray) const
-{
-	LinAl::Vector<T, D> local_dir = inverse_trans.transform_linear(ray.get_direction());
-	float distortion = local_dir.norm();
-	return Ray<T, D>(inverse_trans.transform(ray.get_start()), local_dir, ray.get_limit()*distortion);
-}
-
 template<typename T, unsigned D>
 inline unsigned TransformedShape<T, D>::get_intersections(const Ray<T, D> &ray, SurfacePoint<T, D> *points, unsigned size) const
 {
-	Ray<T, D> local_ray = make_local_ray(ray);
+	Ray<T, D> local_ray = inverse_trans.transform(ray);
 
 	unsigned count = shape->get_intersections(local_ray, points, size);
 	if(points)
@@ -132,6 +103,12 @@ inline unsigned TransformedShape<T, D>::get_intersections(const Ray<T, D> &ray,
 	return count;
 }
 
+template<typename T, unsigned D>
+inline Coverage TransformedShape<T, D>::get_coverage(const BoundingBox<T, D> &bbox) const
+{
+	return shape->get_coverage(inverse_trans.transform(bbox));
+}
+
 } // namespace Geometry
 } // namespace Msp