90 lines
2.4 KiB
C
90 lines
2.4 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 nurbsCurveInterface.h
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* @author drose
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* @date 2001-03-02
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*/
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#ifndef NURBSCURVEINTERFACE_H
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#define NURBSCURVEINTERFACE_H
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#include "pandabase.h"
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#include "luse.h"
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#include "filename.h"
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class ParametricCurve;
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/**
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* This abstract class defines the interface only for a Nurbs-style curve,
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* with knots and coordinates in homogeneous space.
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*
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* The NurbsCurve class inherits both from this and from ParametricCurve.
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*/
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class EXPCL_PANDA_PARAMETRICS NurbsCurveInterface {
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PUBLISHED:
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virtual ~NurbsCurveInterface();
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virtual void set_order(int order)=0;
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virtual int get_order() const=0;
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virtual int get_num_cvs() const=0;
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virtual int get_num_knots() const=0;
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virtual bool insert_cv(PN_stdfloat t)=0;
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INLINE int append_cv(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z);
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INLINE int append_cv(const LVecBase3 &v);
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INLINE int append_cv(const LVecBase4 &v);
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virtual bool remove_cv(int n)=0;
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virtual void remove_all_cvs()=0;
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INLINE bool set_cv_point(int n, PN_stdfloat x, PN_stdfloat y, PN_stdfloat z);
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INLINE bool set_cv_point(int n, const LVecBase3 &v);
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INLINE LVecBase3 get_cv_point(int n) const;
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bool set_cv_weight(int n, PN_stdfloat w);
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INLINE PN_stdfloat get_cv_weight(int n) const;
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virtual bool set_cv(int n, const LVecBase4 &v)=0;
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virtual LVecBase4 get_cv(int n) const=0;
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virtual bool set_knot(int n, PN_stdfloat t)=0;
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virtual PN_stdfloat get_knot(int n) const=0;
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MAKE_SEQ(get_cvs, get_num_cvs, get_cv);
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MAKE_SEQ(get_knots, get_num_knots, get_knot);
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void write_cv(std::ostream &out, int n) const;
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protected:
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virtual int append_cv_impl(const LVecBase4 &v)=0;
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void write(std::ostream &out, int indent_level) const;
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bool format_egg(std::ostream &out, const std::string &name,
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const std::string &curve_type, int indent_level) const;
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bool convert_to_nurbs(ParametricCurve *nc) const;
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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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register_type(_type_handle, "NurbsCurveInterface");
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}
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private:
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static TypeHandle _type_handle;
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};
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#include "nurbsCurveInterface.I"
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#endif
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