127 lines
3.9 KiB
C
127 lines
3.9 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 nurbsSurfaceEvaluator.h
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* @author drose
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* @date 2003-10-10
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*/
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#ifndef NURBSSURFACEEVALUATOR_H
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#define NURBSSURFACEEVALUATOR_H
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#include "pandabase.h"
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#include "nurbsBasisVector.h"
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#include "nurbsSurfaceResult.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 surfaces. 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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class EXPCL_PANDA_PARAMETRICS NurbsSurfaceEvaluator : public ReferenceCount {
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PUBLISHED:
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NurbsSurfaceEvaluator();
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~NurbsSurfaceEvaluator();
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INLINE void set_u_order(int u_order);
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INLINE int get_u_order() const;
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INLINE void set_v_order(int v_order);
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INLINE int get_v_order() const;
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void reset(int num_u_vertices, int num_v_vertices);
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INLINE int get_num_u_vertices() const;
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INLINE int get_num_v_vertices() const;
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INLINE void set_vertex(int ui, int vi, const LVecBase4 &vertex);
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INLINE void set_vertex(int ui, int vi, const LVecBase3 &vertex, PN_stdfloat weight = 1.0);
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INLINE const LVecBase4 &get_vertex(int ui, int vi) const;
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INLINE LVecBase4 get_vertex(int ui, int vi, const NodePath &rel_to) const;
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INLINE void set_vertex_space(int ui, int vi, const NodePath &space);
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INLINE void set_vertex_space(int ui, int vi, const std::string &space);
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NodePath get_vertex_space(int ui, int vi, const NodePath &rel_to) const;
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INLINE void set_extended_vertex(int ui, int vi, int d, PN_stdfloat value);
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INLINE PN_stdfloat get_extended_vertex(int ui, int vi, int d) const;
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void set_extended_vertices(int ui, int vi, int d,
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const PN_stdfloat values[], int num_values);
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INLINE int get_num_u_knots() const;
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void set_u_knot(int i, PN_stdfloat knot);
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PN_stdfloat get_u_knot(int i) const;
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MAKE_SEQ(get_u_knots, get_num_u_knots, get_u_knot);
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void normalize_u_knots();
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INLINE int get_num_v_knots() const;
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void set_v_knot(int i, PN_stdfloat knot);
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PN_stdfloat get_v_knot(int i) const;
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MAKE_SEQ(get_v_knots, get_num_v_knots, get_v_knot);
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void normalize_v_knots();
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INLINE int get_num_u_segments() const;
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INLINE int get_num_v_segments() const;
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PT(NurbsSurfaceResult) evaluate(const NodePath &rel_to = NodePath()) const;
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void output(std::ostream &out) const;
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MAKE_PROPERTY(u_order, get_u_order, set_u_order);
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MAKE_PROPERTY(v_order, get_v_order, set_v_order);
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MAKE_SEQ_PROPERTY(u_knots, get_num_u_knots, get_u_knot, set_u_knot);
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MAKE_SEQ_PROPERTY(v_knots, get_num_v_knots, get_v_knot, set_v_knot);
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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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INLINE NurbsVertex &vert(int ui, int vi);
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INLINE const NurbsVertex &vert(int ui, int vi) const;
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void recompute_u_knots();
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void recompute_v_knots();
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void recompute_u_basis();
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void recompute_v_basis();
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int _u_order;
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int _v_order;
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typedef epvector<NurbsVertex> Vertices;
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Vertices _vertices;
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int _num_u_vertices;
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int _num_v_vertices;
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bool _u_knots_dirty;
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bool _v_knots_dirty;
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typedef vector_stdfloat Knots;
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Knots _u_knots;
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Knots _v_knots;
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bool _u_basis_dirty;
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bool _v_basis_dirty;
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NurbsBasisVector _u_basis;
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NurbsBasisVector _v_basis;
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};
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INLINE std::ostream &operator << (std::ostream &out, const NurbsSurfaceEvaluator &n);
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#include "nurbsSurfaceEvaluator.I"
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#endif
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