128 lines
4.2 KiB
C++
128 lines
4.2 KiB
C++
// Filename: boundingHexahedron.h
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// Created by: drose (03Oct99)
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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 BOUNDINGHEXAHEDRON_H
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#define BOUNDINGHEXAHEDRON_H
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#include "pandabase.h"
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#include "finiteBoundingVolume.h"
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#include "frustum.h"
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#include "plane.h"
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#include "coordinateSystem.h"
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////////////////////////////////////////////////////////////////////
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// Class : BoundingHexahedron
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// Description : This defines a bounding convex hexahedron. It is
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// typically used to represent a frustum, but may
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// represent any enclosing convex hexahedron.
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//
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// This class does not support any of the around() or
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// extend_by() functions, but all other functionality
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// should be well-defined.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA BoundingHexahedron : public FiniteBoundingVolume {
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public:
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INLINE_MATHUTIL BoundingHexahedron();
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BoundingHexahedron(const Frustumf &frustum, bool is_ortho,
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CoordinateSystem cs = CS_default);
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BoundingHexahedron(const LPoint3f &fll, const LPoint3f &flr,
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const LPoint3f &fur, const LPoint3f &ful,
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const LPoint3f &nll, const LPoint3f &nlr,
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const LPoint3f &nur, const LPoint3f &nul);
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ALLOC_DELETED_CHAIN(BoundingHexahedron);
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virtual BoundingVolume *make_copy() const;
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virtual LPoint3f get_min() const;
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virtual LPoint3f get_max() const;
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virtual LPoint3f get_approx_center() const;
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virtual void xform(const LMatrix4f &mat);
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virtual void output(ostream &out) const;
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virtual void write(ostream &out, int indent_level = 0) const;
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INLINE_MATHUTIL int get_num_points() const;
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INLINE_MATHUTIL LPoint3f get_point(int n) const;
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INLINE_MATHUTIL int get_num_planes() const;
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INLINE_MATHUTIL Planef get_plane(int n) const;
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protected:
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virtual bool extend_other(BoundingVolume *other) const;
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virtual bool around_other(BoundingVolume *other,
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const BoundingVolume **first,
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const BoundingVolume **last) const;
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virtual int contains_other(const BoundingVolume *other) const;
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virtual bool extend_by_point(const LPoint3f &point);
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virtual bool extend_by_sphere(const BoundingSphere *sphere);
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virtual bool extend_by_hexahedron(const BoundingHexahedron *hexahedron);
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virtual bool around_points(const LPoint3f *first,
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const LPoint3f *last);
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virtual bool around_spheres(const BoundingVolume **first,
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const BoundingVolume **last);
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virtual bool around_hexahedrons(const BoundingVolume **first,
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const BoundingVolume **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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virtual int contains_sphere(const BoundingSphere *sphere) const;
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virtual int contains_hexahedron(const BoundingHexahedron *hexahedron) const;
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private:
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void set_planes();
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void set_centroid();
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private:
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enum {
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num_points = 8,
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num_planes = 6
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};
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LPoint3f _points[num_points];
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Planef _planes[num_planes];
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LPoint3f _centroid;
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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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FiniteBoundingVolume::init_type();
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register_type(_type_handle, "BoundingHexahedron",
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FiniteBoundingVolume::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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friend class BoundingSphere;
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};
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#include "boundingHexahedron.I"
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#endif
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