Method Instantiator

tutorials/convert/convert.cpp:90–102

  struct Instantiator : public RefCount
  {
    Instantiator(const Ref<HeightField>& heightField,
                 const Ref<SceneGraph::Node>& object, const Ref<Image>& distribution, float minDistance, size_t N)
      : heightField(heightField), object(object), /*minDistance(minDistance),*/ N(N)
    {
      /* create distribution */
      size_t width = distribution->width;
      size_t height = distribution->height;
      std::vector<float> values(width*height);
      for (size_t y=0; y<height; y++)
        for (size_t x=0; x<width; x++)
          values[y*width+x] = luminance(distribution->get(x,y));
      dist = std::make_shared<Distribution2D>(values.data(),width,height);
    }
        
    void instantiate(Ref<SceneGraph::GroupNode>& group) 
    {