93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file geometricBoundingVolume.h
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* @author drose
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* @date 1999-10-07
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*/
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#ifndef GEOMETRICBOUNDINGVOLUME_H
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#define GEOMETRICBOUNDINGVOLUME_H
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#include "pandabase.h"
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#include "boundingVolume.h"
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#include "luse.h"
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#include "lmatrix.h"
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/**
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* This is another abstract class, for a general class of bounding volumes
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* that actually enclose points in 3-d space, such as BSP's and bounding
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* spheres.
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*/
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class EXPCL_PANDA_MATHUTIL GeometricBoundingVolume : public BoundingVolume {
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public:
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INLINE_MATHUTIL GeometricBoundingVolume();
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PUBLISHED:
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INLINE_MATHUTIL bool extend_by(const GeometricBoundingVolume *vol);
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INLINE_MATHUTIL bool extend_by(const LPoint3 &point);
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public:
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// It might be nice to make these template member functions so we could have
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// true STL-style firstlast iterators, but that's impossible for virtual
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// functions.
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INLINE_MATHUTIL bool around(const GeometricBoundingVolume **first,
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const GeometricBoundingVolume **last);
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INLINE_MATHUTIL bool around(const LPoint3 *first, const LPoint3 *last);
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PUBLISHED:
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INLINE_MATHUTIL int contains(const GeometricBoundingVolume *vol) const;
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INLINE_MATHUTIL int contains(const LPoint3 &point) const;
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INLINE_MATHUTIL int contains(const LPoint3 &a, const LPoint3 &b) const;
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virtual LPoint3 get_approx_center() const=0;
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virtual void xform(const LMatrix4 &mat)=0;
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public:
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virtual GeometricBoundingVolume *as_geometric_bounding_volume() final;
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virtual const GeometricBoundingVolume *as_geometric_bounding_volume() const final;
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protected:
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// Some virtual functions to implement fundamental bounding operations on
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// points in 3-d space.
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virtual bool extend_by_point(const LPoint3 &point);
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virtual bool around_points(const LPoint3 *first,
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const LPoint3 *last);
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virtual int contains_point(const LPoint3 &point) const;
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virtual int contains_lineseg(const LPoint3 &a, const LPoint3 &b) const;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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BoundingVolume::init_type();
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register_type(_type_handle, "GeometricBoundingVolume",
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BoundingVolume::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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};
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// We can safely redefine this as a no-op.
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template<>
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INLINE void PointerToBase<GeometricBoundingVolume>::update_type(To *ptr) {}
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#include "geometricBoundingVolume.I"
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#endif
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