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myGLBboxDrawArray.cpp

Go to the documentation of this file.

#include "myGLBboxDrawArray.h"

namespace X3DTK {
namespace GL {

MyGLBboxDrawArray::MyGLBboxDrawArray()
: h(0.1f)
{
  MFVec3f vertexArray(8);
 
  vertexArray[0] = SFVec3f(-1.0f, -1.0f, -1.0f);
  vertexArray[1] = SFVec3f(1.0f, -1.0f, -1.0f);
  vertexArray[2] = SFVec3f(1.0f, 1.0f, -1.0f);
  vertexArray[3] = SFVec3f(-1.0f, 1.0f, -1.0f);
  vertexArray[4] = SFVec3f(-1.0f, -1.0f, 1.0f);
  vertexArray[5] = SFVec3f(1.0f, -1.0f, 1.0f);
  vertexArray[6] = SFVec3f(1.0f, 1.0f, 1.0f);
  vertexArray[7] = SFVec3f(-1.0f, 1.0f, 1.0f);
  
  for (MFVec3f::const_iterator it = vertexArray.begin(); it != vertexArray.end(); ++it)
  {
    _bboxVertexArray.push_back(*it);
  }
  
  //bottom face
  for (int k = 0; k < 4 ; ++k)
  {
     _bboxIndexArray.push_back(k);
     _bboxIndexArray.push_back((k+1)%4);
  }  
  
  //upper face
  for (int k = 0; k < 4 ; ++k)
  {
     _bboxIndexArray.push_back(k+4);
     _bboxIndexArray.push_back((k+1)%4+4);
  }
  
  //front face
  _bboxIndexArray.push_back(1);
  _bboxIndexArray.push_back(5);
  _bboxIndexArray.push_back(2);
  _bboxIndexArray.push_back(6);
 
  //back face
  _bboxIndexArray.push_back(0);
  _bboxIndexArray.push_back(4);
  _bboxIndexArray.push_back(3);
  _bboxIndexArray.push_back(7);
 
  //left and right faces are already completly drawn
    
    
}

unsigned int MyGLBboxDrawArray::getBboxSize() const
{
  return _bboxIndexArray.size();
}

const void * MyGLBboxDrawArray::getBboxVertexArrayAddress() const
{
  return &_bboxVertexArray.front();
}

const unsigned int * MyGLBboxDrawArray::getBboxIndexArrayAddress() const
{
  return &_bboxIndexArray.front(); 
}

}
}

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