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/* ----------------------------------------------------------------------- *
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* This file is part of GEL, http://www.imm.dtu.dk/GEL
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* Copyright (C) the authors and DTU Informatics
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* For license and list of authors, see ../../doc/intro.pdf
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* ----------------------------------------------------------------------- */
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/**
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* @file BoundingNode.h
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* @brief Abstract ancestor of the nodes of a bounding hierarchy.
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*/
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#ifndef __GEOMETRY_BOUNDINGNODE_H
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#define __GEOMETRY_BOUNDINGNODE_H
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#include <vector>
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#include "CGLA/Vec3f.h"
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#include "Ray.h"
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#include "Triangle.h"
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#include "AABox.h"
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#include "OBox.h"
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namespace Geometry
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{
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/// Abstract BOUNDINGNODE node.
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template<class BoxType>
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class BoundingNode: public BoxType
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{
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public:
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BoundingNode(const BoxType& box): BoxType(box) {}
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virtual ~BoundingNode() {}
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/// Count number of intersections from a point in a given direction
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virtual int intersect_cnt(const CGLA::Vec3f&,const CGLA::Vec3f&) const=0;
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/// Find the surface intersection point
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virtual bool intersect(const CGLA::Vec3f&,const CGLA::Vec3f&,float&) const=0;
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virtual void intersect(Ray& r) const = 0;
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/** For a given point, return the min and max square distance and the
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sign. Non-leafs return zero for the sign. Leaves
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return the square of the true distance as both min and max. */
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virtual void sq_distance(const CGLA::Vec3f&, float&, float&, float&) const;
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static BoundingNode* build(std::vector<Triangle>& triangles);
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};
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}
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#endif
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