vrmlshape.h

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#ifndef VRMLSHAPE_H
#define VRMLSHAPE_H

#include <cassert>
#include <vector>
using namespace std;

#include <typedefs.h>

/*
\brief  Using VRML as a primitive graphics format.

 EVERYTHING IS TRIANGLES,
 NON-TRIANGLE STRUCTURES ARE NOT SUPPORTED.
 (possible extensions are lines, because primitive)

 Using VRML as a primitive graphics format this data
 structure represents two different formats: 
   -  Primitive VRML
   -  Triangle Stream.
  
 The write{P,PN,PNC} expect the data in Triangle Stream
 format where the corresponding vectors are triangles.
*/
class vrmlshape
{
public:

  vector<float> point;
  vector<float> normal;
  vector<float> color;
  
  float diffuseColor[3];
  void diffuseColorWrite() const;

  ostream & print( ostream & os ) const;

  void writeP() const;
  void writePN() const;
  void writePNC() const;

  void writePwind() const;
};


class vrmllines
{
public:

  vector<float> point;
  vector<float> color;

  void writeP() const;
  void writePC() const;

  template< typename T >
  void addnormals
  ( 
    vrmlshape& s,
    T const & col,
    floatc len
  )
  {
    if (s.normal.empty())
      return;

    uintc imax = s.normal.size();
    for (uint i=0; i<imax; i+=3)
    {
      point.push_back( s.point[i] );
      point.push_back( s.point[i+1] );
      point.push_back( s.point[i+2] );

      point.push_back( s.point[i]+len*s.normal[i] );
      point.push_back( s.point[i+1]+len*s.normal[i+1] );
      point.push_back( s.point[i+2]+len*s.normal[i+2] );

      color.push_back(col[0]);
      color.push_back(col[1]);
      color.push_back(col[2]);
      color.push_back(col[0]);
      color.push_back(col[1]);
      color.push_back(col[2]);
    }
  }
};

#endif