184 lines
6 KiB
C++
184 lines
6 KiB
C++
/**
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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 collisionBox.h
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* @author amith tudur
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* @date 2009-07-31
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*/
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#ifndef COLLISIONBOX_H
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#define COLLISIONBOX_H
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#include "pandabase.h"
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#include "collisionSolid.h"
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#include "parabola.h"
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#include "plane.h"
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#include "look_at.h"
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#include "clipPlaneAttrib.h"
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/**
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* A cuboid collision volume or object.
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*/
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class EXPCL_PANDA_COLLIDE CollisionBox : public CollisionSolid {
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PUBLISHED:
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INLINE explicit CollisionBox(const LPoint3 ¢er,
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PN_stdfloat x, PN_stdfloat y, PN_stdfloat z);
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INLINE explicit CollisionBox(const LPoint3 &min, const LPoint3 &max);
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virtual LPoint3 get_collision_origin() const;
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protected:
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INLINE CollisionBox();
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public:
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INLINE CollisionBox(const CollisionBox ©);
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virtual CollisionSolid *make_copy();
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virtual PT(CollisionEntry)
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test_intersection(const CollisionEntry &entry) const;
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virtual void xform(const LMatrix4 &mat);
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virtual PStatCollector &get_volume_pcollector();
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virtual PStatCollector &get_test_pcollector();
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virtual void output(std::ostream &out) const;
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INLINE static void flush_level();
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void setup_box();
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PUBLISHED:
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INLINE int get_num_points() const;
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INLINE LPoint3 get_point_aabb(int n) const;
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INLINE LPoint3 get_point(int n) const;
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INLINE int get_num_planes() const;
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INLINE LPlane set_plane(int n) const;
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INLINE LPlane get_plane(int n) const;
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INLINE void set_center(const LPoint3 ¢er);
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INLINE void set_center(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z);
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INLINE const LPoint3 &get_center() const;
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INLINE const LPoint3 &get_min() const;
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INLINE const LPoint3 &get_max() const;
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INLINE LVector3 get_dimensions() const;
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PUBLISHED:
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MAKE_PROPERTY(center, get_center);
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MAKE_PROPERTY(min, get_min);
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MAKE_PROPERTY(max, get_max);
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MAKE_PROPERTY(dimensions, get_dimensions);
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protected:
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virtual PT(BoundingVolume) compute_internal_bounds() const;
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virtual PT(CollisionEntry)
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test_intersection_from_sphere(const CollisionEntry &entry) const;
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virtual PT(CollisionEntry)
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test_intersection_from_line(const CollisionEntry &entry) const;
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virtual PT(CollisionEntry)
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test_intersection_from_ray(const CollisionEntry &entry) const;
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virtual PT(CollisionEntry)
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test_intersection_from_segment(const CollisionEntry &entry) const;
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virtual PT(CollisionEntry)
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test_intersection_from_parabola(const CollisionEntry &entry) const;
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virtual PT(CollisionEntry)
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test_intersection_from_capsule(const CollisionEntry &entry) const;
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virtual PT(CollisionEntry)
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test_intersection_from_box(const CollisionEntry &entry) const;
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virtual void fill_viz_geom();
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protected:
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bool intersects_line(double &t1, double &t2,
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const LPoint3 &from, const LVector3 &delta,
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PN_stdfloat inflate_size=0) const;
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private:
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LPoint3 _center;
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LPoint3 _min;
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LPoint3 _max;
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PN_stdfloat _x, _y, _z, _radius;
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LPoint3 _vertex[8]; // Each of the Eight Vertices of the Box
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LPlane _planes[6]; //Points to each of the six sides of the Box
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static const int plane_def[6][4];
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static PStatCollector _volume_pcollector;
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static PStatCollector _test_pcollector;
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private:
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INLINE static bool is_right(const LVector2 &v1, const LVector2 &v2);
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INLINE static PN_stdfloat dist_to_line(const LPoint2 &p,
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const LPoint2 &f, const LVector2 &v);
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static PN_stdfloat dist_to_line_segment(const LPoint2 &p,
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const LPoint2 &f, const LPoint2 &t,
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const LVector2 &v);
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public:
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class PointDef {
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public:
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INLINE PointDef(const LPoint2 &p, const LVector2 &v);
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INLINE PointDef(PN_stdfloat x, PN_stdfloat y);
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INLINE PointDef(const PointDef ©);
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INLINE void operator = (const PointDef ©);
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LPoint2 _p; // the point in 2-d space
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LVector2 _v; // the normalized vector to the next point
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};
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typedef pvector<PointDef> Points;
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static void compute_vectors(Points &points);
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void draw_polygon(GeomNode *viz_geom_node, GeomNode *bounds_viz_geom_node,
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const Points &points) const;
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bool point_is_inside(const LPoint2 &p, const Points &points) const;
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PN_stdfloat dist_to_polygon(const LPoint2 &p, const Points &points) const;
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void setup_points(const LPoint3 *begin, const LPoint3 *end, int plane);
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INLINE LPoint2 to_2d(const LVecBase3 &point3d, int plane) const;
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INLINE void calc_to_3d_mat(LMatrix4 &to_3d_mat, int plane) const;
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INLINE void rederive_to_3d_mat(LMatrix4 &to_3d_mat, int plane) const;
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INLINE static LPoint3 to_3d(const LVecBase2 &point2d, const LMatrix4 &to_3d_mat);
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bool clip_polygon(Points &new_points, const Points &source_points,
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const LPlane &plane,int plane_no) const;
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bool apply_clip_plane(Points &new_points, const ClipPlaneAttrib *cpa,
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const TransformState *net_transform, int plane_no) const;
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private:
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Points _points[6]; // one set of points for each of the six planes that make up the box
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LMatrix4 _to_2d_mat[6];
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public:
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INLINE Points get_plane_points( int n );
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public:
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static void register_with_read_factory();
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virtual void write_datagram(BamWriter *manager, Datagram &me);
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protected:
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static TypedWritable *make_CollisionBox(const FactoryParams ¶ms);
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void fillin(DatagramIterator &scan, BamReader *manager);
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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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CollisionSolid::init_type();
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register_type(_type_handle, "CollisionBox",
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CollisionSolid::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 "collisionBox.I"
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#endif /* COLLISIONBOX_H */
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