118 lines
3.5 KiB
C
118 lines
3.5 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 piecewiseCurve.h
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* @author drose
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* @date 2001-03-04
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*/
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#ifndef PIECEWISECURVE_H
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#define PIECEWISECURVE_H
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#include "pandabase.h"
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#include "parametricCurve.h"
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#include "pointerTo.h"
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/**
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* A PiecewiseCurve is a curve made up of several curve segments, connected in
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* a head-to-tail fashion. The length of each curve segment in parametric
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* space is definable.
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*/
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class EXPCL_PANDA_PARAMETRICS PiecewiseCurve : public ParametricCurve {
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PUBLISHED:
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PiecewiseCurve();
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~PiecewiseCurve();
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public:
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// These functions are all inherited from ParametricCurve, and need not be
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// re-published.
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virtual bool is_valid() const;
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virtual PN_stdfloat get_max_t() const;
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virtual bool get_point(PN_stdfloat t, LVecBase3 &point) const;
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virtual bool get_tangent(PN_stdfloat t, LVecBase3 &tangent) const;
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virtual bool get_pt(PN_stdfloat t, LVecBase3 &point, LVecBase3 &tangent) const;
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virtual bool get_2ndtangent(PN_stdfloat t, LVecBase3 &tangent2) const;
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virtual bool adjust_point(PN_stdfloat t, PN_stdfloat px, PN_stdfloat py, PN_stdfloat pz);
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virtual bool adjust_tangent(PN_stdfloat t, PN_stdfloat tx, PN_stdfloat ty, PN_stdfloat tz);
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virtual bool adjust_pt(PN_stdfloat t,
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PN_stdfloat px, PN_stdfloat py, PN_stdfloat pz,
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PN_stdfloat tx, PN_stdfloat ty, PN_stdfloat tz);
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public:
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int get_num_segs() const;
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ParametricCurve *get_curveseg(int ti);
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bool insert_curveseg(int ti, ParametricCurve *seg, PN_stdfloat tlength);
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bool remove_curveseg(int ti);
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void remove_all_curvesegs();
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PN_stdfloat get_tlength(int ti) const;
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PN_stdfloat get_tstart(int ti) const;
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PN_stdfloat get_tend(int ti) const;
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bool set_tlength(int ti, PN_stdfloat tlength);
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void make_nurbs(int order, int num_cvs,
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const PN_stdfloat knots[], const LVecBase4 cvs[]);
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virtual bool get_bezier_segs(BezierSegs &bz_segs) const;
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virtual bool
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rebuild_curveseg(int rtype0, PN_stdfloat t0, const LVecBase4 &v0,
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int rtype1, PN_stdfloat t1, const LVecBase4 &v1,
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int rtype2, PN_stdfloat t2, const LVecBase4 &v2,
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int rtype3, PN_stdfloat t3, const LVecBase4 &v3);
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protected:
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bool find_curve(const ParametricCurve *&curve, PN_stdfloat &t) const;
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PN_stdfloat current_seg_range(PN_stdfloat t) const;
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class Curveseg {
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public:
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Curveseg() {}
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Curveseg(ParametricCurve *c, PN_stdfloat t) : _curve(c), _tend(t) {}
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PT(ParametricCurve) _curve;
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PN_stdfloat _tend;
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};
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pvector<Curveseg> _segs;
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int _last_ti;
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// TypedWritable stuff
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protected:
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virtual void write_datagram(BamWriter *manager, Datagram &me);
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void fillin(DatagramIterator &scan, BamReader *manager);
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virtual int complete_pointers(TypedWritable **plist,
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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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ParametricCurve::init_type();
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register_type(_type_handle, "PiecewiseCurve",
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ParametricCurve::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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#endif
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