Source/System/NodeCores/Drawables/Nurbs/Internal/OSGBezierTensorSurface.h

   1 /*---------------------------------------------------------------------------*\
   2  *                           OpenSG NURBS Library                            *
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   5  * Copyright (C) 2001-2006 by the University of Bonn, Computer Graphics Group*
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  12 /*---------------------------------------------------------------------------*\
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  15  * This library is free software; you can redistribute it and/or modify it   *
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  17  * by the Free Software Foundation, version 2.                               *
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  19  * This library is distributed in the hope that it will be useful, but       *
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  37 \*---------------------------------------------------------------------------*/
  38 #ifndef _OSG_BEZIERTENSORSURFACE_H_
  39 #define _OSG_BEZIERTENSORSURFACE_H_
  40 #ifdef __sgi
  41 #pragma once
  42 #endif
  43
  44 #include "OSGDrawableDef.h"
  45 #include "OSGConfig.h"
  46
  47
  48 #include <iostream>
  49 #include <fstream>
  50 #include <iomanip>
  51 #include <vector>
  52
  53 #include "OSGdctptypes.h"
  54 #include "OSGBezierCurve3D.h"
  55
  56 OSG_BEGIN_NAMESPACE
  57
  58 class BezierTensorSurface;
  59
  60 typedef std::vector<BezierTensorSurface> beziersurfacevector;
  61 typedef std::vector<beziersurfacevector> beziersurfacematrix;
  62
  63
  64 class OSG_DRAWABLE_DLLMAPPING BezierTensorSurface
  65 {
  66   protected:
  67     DCTPVec4dmatrix control_points; //control points of the surface
  68
  69   public:
  70     inline  BezierTensorSurface(void                          );
  71     inline  BezierTensorSurface(const DCTPVec4dmatrix     &cps);
  72     inline  BezierTensorSurface(const BezierTensorSurface &bts);
  73     inline ~BezierTensorSurface(void                          );
  74
  75     //setup functions
  76     int setControlPointMatrix(const DCTPVec4dmatrix& cps); //ok, acts like its name says
  77
  78     //query functions
  79     inline DCTPVec4dmatrix& getControlPointMatrix(void);
  80
  81     //some REAL functionality
  82     Vec3d computewdeCasteljau(Vec2d uv, int &error); //compute curve at parameter value t
  83     Vec3d computeLinearApproximation(Vec2d uv, int &error); //ok like its name sayz
  84     int   midPointSubDivision(beziersurfacematrix &newbeziers); //subdivide surface at midpoint into 4 bezier surfaces
  85     int   midPointSubDivision(beziersurfacevector &newbeziers); //subdivide surface at midpoint into 4 bezier surfaces
  86     int   midPointSubDivisionU(BezierTensorSurface &newsurface);
  87     int   midPointSubDivisionV(BezierTensorSurface &newsurface);
  88 };
  89
  90 OSG_END_NAMESPACE
  91
  92 #include "OSGBezierTensorSurface.inl"
  93
  94 #endif //BezierTensorSurface.h