X-Git-Url: http://git.tdb.fi/?p=libs%2Fmath.git;a=blobdiff_plain;f=source%2Fgeometry%2Ftransformedshape.h;h=9387123508dcf081341c076f8c4e41970a10ead0;hp=91790fc77276fd8aedbb75f318b856d775334cd2;hb=2826730b5d68d1ad74dc6363af43ca796f96caa2;hpb=a29d2c17ca70a3ed5df1e863c92ccd851d5dba6b

diff --git a/source/geometry/transformedshape.h b/source/geometry/transformedshape.h
index 91790fc..9387123 100644
--- a/source/geometry/transformedshape.h
+++ b/source/geometry/transformedshape.h
@@ -29,7 +29,7 @@ public:
 	const Shape<T, D> &get_shape() const { return *shape; }
 	const AffineTransformation<T, D> &get_transformation() const { return transformation; }
 
-	virtual BoundingBox<T, D> get_axis_aligned_bounding_box() const;
+	virtual BoundingBox<T, D> get_axis_aligned_bounding_box(unsigned = 0) const;
 	virtual bool contains(const LinAl::Vector<T, D> &) const;
 	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;
@@ -72,8 +72,11 @@ 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
+inline BoundingBox<T, D> TransformedShape<T, D>::get_axis_aligned_bounding_box(unsigned detail) const
 {
+	if(detail)
+		return this->bisect_axis_aligned_bounding_box(detail);
+
 	return transformation.transform(shape->get_axis_aligned_bounding_box());
 }
 
@@ -106,7 +109,30 @@ inline unsigned TransformedShape<T, D>::get_intersections(const Ray<T, D> &ray,
 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));
+	BoundingBox<T, D> local_bbox = inverse_trans.transform(bbox);
+	Coverage coverage = shape->get_coverage(local_bbox);
+	if(coverage==PARTIAL_COVERAGE)
+	{
+		BoundingBox<T, D> outer_bbox = transformation.transform(local_bbox);
+		LinAl::Vector<T, D> min_pt = local_bbox.get_minimum_point();
+		LinAl::Vector<T, D> max_pt = local_bbox.get_maximum_point();
+		for(unsigned i=0; i<D; ++i)
+		{
+			T scale_ratio = (1-bbox.get_dimension(i)/outer_bbox.get_dimension(i))*local_bbox.get_dimension(i);
+			T low_gap = bbox.get_minimum_coordinate(i)-outer_bbox.get_minimum_coordinate(i);
+			T high_gap = outer_bbox.get_maximum_coordinate(i)-bbox.get_maximum_coordinate(i);
+			min_pt[i] += low_gap*scale_ratio;
+			max_pt[i] -= high_gap-scale_ratio;
+		}
+
+		local_bbox = BoundingBox<T, D>(min_pt, max_pt);
+		if(shape->get_coverage(local_bbox)>=PARTIAL_COVERAGE)
+			return PARTIAL_COVERAGE;
+		else
+			return UNCERTAIN_COVERAGE;
+	}
+	else
+		return coverage;
 }
 
 } // namespace Geometry