161 lines
5.1 KiB
C++
161 lines
5.1 KiB
C++
// Filename: collisionPolygon.h
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// Created by: drose (25Apr00)
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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 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 "vector_LPoint2f.h"
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class GeomNode;
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////////////////////////////////////////////////////////////////////
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// Class : CollisionPolygon
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// Description :
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA CollisionPolygon : public CollisionPlane {
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PUBLISHED:
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INLINE CollisionPolygon(const LVecBase3f &a, const LVecBase3f &b,
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const LVecBase3f &c);
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INLINE CollisionPolygon(const LVecBase3f &a, const LVecBase3f &b,
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const LVecBase3f &c, const LVecBase3f &d);
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INLINE CollisionPolygon(const LPoint3f *begin, const LPoint3f *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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INLINE static bool verify_points(const LPoint3f &a, const LPoint3f &b,
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const LPoint3f &c);
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INLINE static bool verify_points(const LPoint3f &a, const LPoint3f &b,
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const LPoint3f &c, const LPoint3f &d);
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static bool verify_points(const LPoint3f *begin, const LPoint3f *end);
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bool is_valid() const;
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bool is_concave() const;
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virtual void xform(const LMatrix4f &mat);
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virtual LPoint3f get_collision_origin() const;
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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(ostream &out) const;
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virtual void write(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 void fill_viz_geom();
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private:
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class PointDef {
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public:
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INLINE PointDef(const LPoint2f &p, const LVector2f &v);
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INLINE PointDef(float x, float y);
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INLINE PointDef(const PointDef ©);
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INLINE void operator = (const PointDef ©);
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LPoint2f _p; // the point in 2-d space
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LVector2f _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 LPoint2f &p, const Points &points) const;
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float dist_to_polygon(const LPoint2f &p, const Points &points) const;
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void setup_points(const LPoint3f *begin, const LPoint3f *end);
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INLINE LPoint2f to_2d(const LVecBase3f &point3d) const;
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INLINE void calc_to_3d_mat(LMatrix4f &to_3d_mat) const;
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INLINE void rederive_to_3d_mat(LMatrix4f &to_3d_mat) const;
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INLINE static LPoint3f to_3d(const LVecBase2f &point2d, const LMatrix4f &to_3d_mat);
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LPoint3f legacy_to_3d(const LVecBase2f &point2d, int axis) const;
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bool clip_polygon(Points &new_points, const Points &source_points,
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const Planef &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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LMatrix4f _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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