107 lines
3.2 KiB
C
107 lines
3.2 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 nurbsCurveEvaluator.h
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* @author drose
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* @date 2002-12-03
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*/
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#ifndef NURBSCURVEEVALUATOR_H
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#define NURBSCURVEEVALUATOR_H
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#include "pandabase.h"
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#include "nurbsBasisVector.h"
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#include "nurbsCurveResult.h"
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#include "nurbsVertex.h"
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#include "pointerTo.h"
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#include "vector_stdfloat.h"
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#include "pvector.h"
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#include "epvector.h"
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#include "nodePath.h"
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#include "referenceCount.h"
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#include "luse.h"
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/**
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* This class is an abstraction for evaluating NURBS curves. It accepts an
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* array of vertices, each of which may be in a different coordinate space (as
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* defined by a NodePath), as well as an optional knot vector.
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*
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* This is not related to NurbsCurve, CubicCurveseg or any of the
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* ParametricCurve-derived objects in this module. It is a completely
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* parallel implementation of NURBS curves, and will probably eventually
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* replace the whole ParametricCurve class hierarchy.
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*/
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class EXPCL_PANDA_PARAMETRICS NurbsCurveEvaluator : public ReferenceCount {
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PUBLISHED:
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NurbsCurveEvaluator();
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~NurbsCurveEvaluator();
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INLINE void set_order(int order);
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INLINE int get_order() const;
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void reset(int num_vertices);
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INLINE int get_num_vertices() const;
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INLINE void set_vertex(int i, const LVecBase4 &vertex);
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INLINE void set_vertex(int i, const LVecBase3 &vertex, PN_stdfloat weight = 1.0);
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INLINE const LVecBase4 &get_vertex(int i) const;
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INLINE LVecBase4 get_vertex(int i, const NodePath &rel_to) const;
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MAKE_SEQ(get_vertices, get_num_vertices, get_vertex);
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INLINE void set_vertex_space(int i, const NodePath &space);
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INLINE void set_vertex_space(int i, const std::string &space);
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NodePath get_vertex_space(int i, const NodePath &rel_to) const;
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INLINE void set_extended_vertex(int i, int d, PN_stdfloat value);
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INLINE PN_stdfloat get_extended_vertex(int i, int d) const;
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void set_extended_vertices(int i, int d,
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const PN_stdfloat values[], int num_values);
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INLINE int get_num_knots() const;
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void set_knot(int i, PN_stdfloat knot);
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PN_stdfloat get_knot(int i) const;
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MAKE_SEQ(get_knots, get_num_knots, get_knot);
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void normalize_knots();
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INLINE int get_num_segments() const;
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PT(NurbsCurveResult) evaluate(const NodePath &rel_to = NodePath()) const;
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PT(NurbsCurveResult) evaluate(const NodePath &rel_to,
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const LMatrix4 &mat) const;
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void output(std::ostream &out) const;
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public:
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typedef epvector<LVecBase4> Vert4Array;
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typedef pvector<LPoint3> Vert3Array;
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void get_vertices(Vert4Array &verts, const NodePath &rel_to) const;
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void get_vertices(Vert3Array &verts, const NodePath &rel_to) const;
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private:
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void recompute_knots();
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void recompute_basis();
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int _order;
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typedef epvector<NurbsVertex> Vertices;
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Vertices _vertices;
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bool _knots_dirty;
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typedef vector_stdfloat Knots;
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Knots _knots;
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bool _basis_dirty;
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NurbsBasisVector _basis;
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};
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INLINE std::ostream &operator << (std::ostream &out, const NurbsCurveEvaluator &n);
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#include "nurbsCurveEvaluator.I"
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#endif
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