#include "Rectangle3.h"

namespace GtpVisibilityPreprocessor {


void
Rectangle3::Split(const int axis,
		  Rectangle3 &r1,
		  Rectangle3 &r2
		  ) const
{
  if (axis==0) {
    Vector3 v1 = (mVertices[0] + mVertices[1])*0.5f;
    Vector3 v2 = (mVertices[2] + mVertices[3])*0.5f;
    
    r1.mVertices[0] = mVertices[0];
    r1.mVertices[1] = v1;
    r1.mVertices[2] = v2;
    r1.mVertices[3] = mVertices[3];

    r2.mVertices[0] = v1;
    r2.mVertices[1] = mVertices[1];
    r2.mVertices[2] = mVertices[2];
    r2.mVertices[3] = v2;
  } else {
    Vector3 v1 = (mVertices[0] + mVertices[3])*0.5f;
    Vector3 v2 = (mVertices[1] + mVertices[2])*0.5f;
    
    r1.mVertices[0] = mVertices[0];
    r1.mVertices[1] = mVertices[1];
    r1.mVertices[2] = v2;
    r1.mVertices[3] = v1;
    
    r2.mVertices[0] = v1;
    r2.mVertices[1] = v2;
    r2.mVertices[2] = mVertices[2];
    r2.mVertices[3] = mVertices[3];
  }
  
}

}