125 lines
3.8 KiB
C++
125 lines
3.8 KiB
C++
// Filename: piecewiseCurve.h
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// Created by: drose (04Mar01)
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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, 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://www.panda3d.org/license.txt .
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//
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// To contact the maintainers of this program write to
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// panda3d@yahoogroups.com .
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//
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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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// Class : PiecewiseCurve
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// Description : A PiecewiseCurve is a curve made up of several curve
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// segments, connected in a head-to-tail fashion. The
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// length of each curve segment in parametric space is
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// definable.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA 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
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// not be re-published.
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virtual bool is_valid() const;
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virtual float get_max_t() const;
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virtual bool get_point(float t, LVecBase3f &point) const;
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virtual bool get_tangent(float t, LVecBase3f &tangent) const;
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virtual bool get_pt(float t, LVecBase3f &point, LVecBase3f &tangent) const;
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virtual bool get_2ndtangent(float t, LVecBase3f &tangent2) const;
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virtual bool adjust_point(float t, float px, float py, float pz);
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virtual bool adjust_tangent(float t, float tx, float ty, float tz);
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virtual bool adjust_pt(float t,
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float px, float py, float pz,
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float tx, float ty, float 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, float tlength);
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bool remove_curveseg(int ti);
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void remove_all_curvesegs();
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float get_tlength(int ti) const;
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float get_tstart(int ti) const;
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float get_tend(int ti) const;
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bool set_tlength(int ti, float tlength);
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void make_nurbs(int order, int num_cvs,
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const float knots[], const LVecBase4f 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, float t0, const LVecBase4f &v0,
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int rtype1, float t1, const LVecBase4f &v1,
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int rtype2, float t2, const LVecBase4f &v2,
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int rtype3, float t3, const LVecBase4f &v3);
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protected:
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bool find_curve(const ParametricCurve *&curve, float &t) const;
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float current_seg_range(float 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, float t) : _curve(c), _tend(t) {}
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PT(ParametricCurve) _curve;
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float _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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