179 lines
5.6 KiB
C
179 lines
5.6 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 collisionPolygon.h
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* @author drose
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* @date 2000-04-25
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*/
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#ifndef COLLISIONPOLYGON_H
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#define COLLISIONPOLYGON_H
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#include "pandabase.h"
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#include "collisionPlane.h"
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#include "clipPlaneAttrib.h"
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#include "look_at.h"
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#include "pvector.h"
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class GeomNode;
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/**
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*
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*/
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class EXPCL_PANDA_COLLIDE CollisionPolygon : public CollisionPlane {
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PUBLISHED:
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INLINE CollisionPolygon(const LVecBase3 &a, const LVecBase3 &b,
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const LVecBase3 &c);
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INLINE CollisionPolygon(const LVecBase3 &a, const LVecBase3 &b,
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const LVecBase3 &c, const LVecBase3 &d);
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INLINE CollisionPolygon(const LPoint3 *begin, const LPoint3 *end);
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private:
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INLINE CollisionPolygon();
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public:
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CollisionPolygon(const CollisionPolygon ©);
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virtual CollisionSolid *make_copy();
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PUBLISHED:
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virtual LPoint3 get_collision_origin() const;
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INLINE size_t get_num_points() const;
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INLINE LPoint3 get_point(size_t n) const;
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MAKE_SEQ(get_points, get_num_points, get_point);
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INLINE static bool verify_points(const LPoint3 &a, const LPoint3 &b,
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const LPoint3 &c);
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INLINE static bool verify_points(const LPoint3 &a, const LPoint3 &b,
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const LPoint3 &c, const LPoint3 &d);
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static bool verify_points(const LPoint3 *begin, const LPoint3 *end);
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bool is_valid() const;
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bool is_concave() const;
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PUBLISHED:
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MAKE_SEQ_PROPERTY(points, get_num_points, get_point);
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MAKE_PROPERTY(valid, is_valid);
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MAKE_PROPERTY(concave, is_concave);
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public:
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virtual void xform(const LMatrix4 &mat);
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virtual PT(PandaNode) get_viz(const CullTraverser *trav,
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const CullTraverserData &data,
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bool bounds_only) const;
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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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virtual void write(std::ostream &out, int indent_level = 0) const;
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INLINE static void flush_level();
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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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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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private:
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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 project(const LVector3 &axis, PN_stdfloat ¢er, PN_stdfloat &extent) const;
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void setup_points(const LPoint3 *begin, const LPoint3 *end);
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INLINE LPoint2 to_2d(const LVecBase3 &point3d) const;
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INLINE void calc_to_3d_mat(LMatrix4 &to_3d_mat) const;
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INLINE void rederive_to_3d_mat(LMatrix4 &to_3d_mat) 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) const;
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bool apply_clip_plane(Points &new_points, const ClipPlaneAttrib *cpa,
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const TransformState *net_transform) const;
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private:
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Points _points;
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LMatrix4 _to_2d_mat;
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static PStatCollector _volume_pcollector;
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static PStatCollector _test_pcollector;
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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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static TypedWritable *make_CollisionPolygon(const FactoryParams ¶ms);
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protected:
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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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CollisionPlane::init_type();
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register_type(_type_handle, "CollisionPolygon",
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CollisionPlane::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 "collisionPolygon.I"
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#endif
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