#include "MyMeshData.h"

namespace X3DTK {
namespace MESH {

void VertexDistanceData::setDistance(float distance) 
{
  _distance = distance;
}

void computeVerticesDistance(MyMesh *M)
{
  // computing distance to (0, 0, 0) point.
  float maxDistance = 0.0f;
  // Getting the vertices.
  const MESH::MyMesh::MFVertex &vertices = M->getVertices();
  // Iterating the vertices.
  for (MyMesh::MFVertex::const_iterator v = vertices.begin(); v != vertices.end(); ++v)
  {
    // Getting the point.
    const SFPoint3f &P =(*v)->data().getPoint();
    SFVec3f OP = P - SFPoint3f::null;
    float distance = OP.norm(); 
    
    // Setting the distance.
    (*v)->data().setDistance(distance);
    
    // Updating the maximum distance.
    if (distance > maxDistance)
      maxDistance = distance;
  }
  
  // normalizing in [0, 1]
  for (MyMesh::MFVertex::const_iterator nv = vertices.begin(); nv != vertices.end(); ++nv)
    (*nv)->data().setDistance((*nv)->data().getDistance()/maxDistance);
}

}
}