#include "BBox.h"

namespace X3DTK {

BBox::BBox()
: _center(SFVec3f(0.0f, 0.0f, 0.0f)), _size(SFVec3f(-1.0f, -1.0f, -1.0f))
{
}

BBox::BBox(const SFVec3f &center, const SFVec3f &size)
: _center(center), _size(size)
{
}


BBox::BBox(const BBox &B)
: _center(B._center), _size(B._size)
{
}

BBox::BBox(const MFVec3f &coord)
{
  if (coord.empty())
    return;
  
  SFVec3f min = coord[0];
  SFVec3f max = coord[0];
  
  for (MFVec3f::const_iterator itVertex = coord.begin(); itVertex != coord.end(); ++itVertex)
  {
    SFVec3f min2 = *itVertex;
    SFVec3f max2 = *itVertex;
  
    if (min2.x < min.x)
      min.x = min2.x;
    if (min2.y < min.y)
      min.y = min2.y;
    if (min2.z < min.z)
      min.z = min2.z;
  
    if (max2.x < max.x)
      max.x = max2.x;
    if (max2.y < max.y)
      max.y = max2.y;
    if (max2.z < max.z)
      max.z = max2.z;
  }
  
  //computing the new center
  _center = 0.5f*(min + max);
  _size = 2.0f*(max - _center);
}

}