90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
// Filename: geometricBoundingVolume.h
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// Created by: drose (07Oct99)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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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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// Class : GeometricBoundingVolume
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// Description : This is another abstract class, for a general class
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// of bounding volumes that actually enclose points in
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// 3-d space, such as BSP's and bounding spheres.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA 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 LPoint3f &point);
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// It might be nice to make these template member functions so we
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// could have true STL-style first/last iterators, but that's
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// impossible for virtual 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 LPoint3f *first,
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const LPoint3f *last);
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INLINE_MATHUTIL int contains(const GeometricBoundingVolume *vol) const;
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INLINE_MATHUTIL int contains(const LPoint3f &point) const;
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INLINE_MATHUTIL int contains(const LPoint3f &a, const LPoint3f &b) const;
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virtual LPoint3f get_approx_center() const=0;
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virtual void xform(const LMatrix4f &mat)=0;
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protected:
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// Some virtual functions to implement fundamental bounding
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// operations on points in 3-d space.
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virtual bool extend_by_point(const LPoint3f &point);
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virtual bool around_points(const LPoint3f *first,
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const LPoint3f *last);
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virtual int contains_point(const LPoint3f &point) const;
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virtual int contains_lineseg(const LPoint3f &a, const LPoint3f &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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#include "geometricBoundingVolume.I"
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#endif
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