docs: protected void computeHistogramInside( RectangleRotate_F32 region) {
  		for( int i = 0; i < samplePts.size(); i++ ) {
  			Point2D_F32 p = samplePts.get(i);
  
  			squareToImageSample(p.x, p.y, region);
  
  			interpolate.get_fast(imageX,imageY,value);
  
  			int indexHistogram = computeHistogramBin(value);
  
  			sampleHistIndex[ i ] = indexHistogram;
  			histogram[indexHistogram] += weights[i];
  		}
  	}