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/home/xchen/xia/src/glrender/demoVolumeTorus1.cc

#include <View.H>                                          // openGL display defined here.
#include <TensorBlossom.H>                                 // Bsplines defined here.

using namespace xchen;                                     


void volume_torus(View* v)
{
  typedef TensorBlossom<1,2> CrvBspType;                   // A dimension 1 manifold in E2: plannar Bspline Curve type.
  typedef TensorBlossom<2,4> SrfBspType;                   // A dimension 2 manifold in E4, or P3 if rational tag is set.
  typedef TensorBlossom<3,4> VolBspType;                   // A dimension 3 manifold in E4, or P3 if rational tag is set.
  
  CrvBspType *radius = new CrvBspType(1,2);                // A planar curve of degree 1, control point size 2.
  radius->ControlMesh() = E2(0.0), E2(1.);
  SrfBspType *dis = new SrfBspType(revolution, radius);    // Revolution of the radius around y-axis: a disk in xz plane.
  *dis = tX(1.5) * ( rX(-90) * (*dis));                    // Rotate disk to xy plane, and move disk center to  (1.5, 0, 0).
    
  VolBspType *vtorus = new VolBspType(revolution, dis);    // Revolution around y-axis again: the volume torus we want.

  cout << "Volumen Torus is\n" << *vtorus << endl;         // Print the volume bspline we have made.

  new glModel(v, vtorus);                                  // New an openGL model from the torus in order to display and interact with it.
}
  

void new_glModel(View* v)                                  // Override this routine in the dynamic library to put the model in the view.
{
  volume_torus(v);
}

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