Method init

tutorials/convert/distribution2d.cpp:17–38

  }

  void Distribution2D::init(const float* f, const size_t w, const size_t h)
  {
    /*! create arrays */
    width = w; height = h;
    xDists.resize(height);
    std::vector<float> fy(height);

    /*! compute y distribution and initialize row distributions */
    for (size_t y=0; y<height; y++)
    {
      /*! accumulate row to compute y distribution */
      fy[y] = 0.0f;
      for (size_t x=0; x<width; x++)
        fy[y] += f[y*w+x];

      /*! initialize distribution for current row */
      xDists[y].init(f+y*width, width);
    }

    /*! initializes the y distribution */
    yDist.init(fy.data(), height);
  }

  Vec2f Distribution2D::sample(const Vec2f& u) const
  {