Panda3D
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00001 // Filename: nurbsCurveInterface.h 00002 // Created by: drose (02Mar01) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) Carnegie Mellon University. All rights reserved. 00008 // 00009 // All use of this software is subject to the terms of the revised BSD 00010 // license. You should have received a copy of this license along 00011 // with this source code in a file named "LICENSE." 00012 // 00013 //////////////////////////////////////////////////////////////////// 00014 00015 #ifndef NURBSCURVEINTERFACE_H 00016 #define NURBSCURVEINTERFACE_H 00017 00018 #include "pandabase.h" 00019 00020 #include "luse.h" 00021 #include "filename.h" 00022 00023 class ParametricCurve; 00024 00025 //////////////////////////////////////////////////////////////////// 00026 // Class : NurbsCurveInterface 00027 // Description : This abstract class defines the interface only for a 00028 // Nurbs-style curve, with knots and coordinates in 00029 // homogeneous space. 00030 // 00031 // The NurbsCurve class inherits both from this and from 00032 // ParametricCurve. 00033 //////////////////////////////////////////////////////////////////// 00034 class EXPCL_PANDA_PARAMETRICS NurbsCurveInterface { 00035 PUBLISHED: 00036 virtual ~NurbsCurveInterface(); 00037 virtual void set_order(int order)=0; 00038 virtual int get_order() const=0; 00039 00040 virtual int get_num_cvs() const=0; 00041 virtual int get_num_knots() const=0; 00042 00043 virtual bool insert_cv(PN_stdfloat t)=0; 00044 00045 INLINE int append_cv(PN_stdfloat x, PN_stdfloat y, PN_stdfloat z); 00046 INLINE int append_cv(const LVecBase3 &v); 00047 INLINE int append_cv(const LVecBase4 &v); 00048 00049 virtual bool remove_cv(int n)=0; 00050 virtual void remove_all_cvs()=0; 00051 00052 INLINE bool set_cv_point(int n, PN_stdfloat x, PN_stdfloat y, PN_stdfloat z); 00053 INLINE bool set_cv_point(int n, const LVecBase3 &v); 00054 INLINE LVecBase3 get_cv_point(int n) const; 00055 00056 bool set_cv_weight(int n, PN_stdfloat w); 00057 INLINE PN_stdfloat get_cv_weight(int n) const; 00058 00059 virtual bool set_cv(int n, const LVecBase4 &v)=0; 00060 virtual LVecBase4 get_cv(int n) const=0; 00061 00062 virtual bool set_knot(int n, PN_stdfloat t)=0; 00063 virtual PN_stdfloat get_knot(int n) const=0; 00064 00065 void write_cv(ostream &out, int n) const; 00066 00067 00068 protected: 00069 virtual int append_cv_impl(const LVecBase4 &v)=0; 00070 00071 void write(ostream &out, int indent_level) const; 00072 bool format_egg(ostream &out, const string &name, 00073 const string &curve_type, int indent_level) const; 00074 00075 bool convert_to_nurbs(ParametricCurve *nc) const; 00076 00077 public: 00078 static TypeHandle get_class_type() { 00079 return _type_handle; 00080 } 00081 static void init_type() { 00082 register_type(_type_handle, "NurbsCurveInterface"); 00083 } 00084 00085 private: 00086 static TypeHandle _type_handle; 00087 }; 00088 00089 #include "nurbsCurveInterface.I" 00090 00091 #endif