code: void computeProjectionTable( int width , int height ) {
  		output.reshape(width,height);
  		depthMap.reshape(width,height);
  
  		ImageMiscOps.fill(depthMap,-1);
  
  		pointing = new float[width*height*3];
  
  		for (int y = 0; y < output.height; y++) {
  			for (int x = 0; x < output.width; x++) {
  				// Should this add 0.5 so that the ray goes out of the pixel's center? Seems to increase reprojection
  				// error in calibration tests if I do...
  				pixelTo3.compute(x, y, p3);
  				if(UtilEjml.isUncountable(p3.x)) {
  					depthMap.unsafe_set(x,y,Float.NaN);
  				} else {
  					pointing[(y*output.width+x)*3   ] = (float)p3.x;
  					pointing[(y*output.width+x)*3+1 ] = (float)p3.y;
  					pointing[(y*output.width+x)*3+2 ] = (float)p3.z;
  				}
  			}
  		}
  	}
docs: Computes 3D pointing vector for every pixel in the simulated camera frame
  
  @param width width of simulated camera
  @param height height of simulated camera