I made my version of 3D Heightmap plugin. New version 1.3 has now light angle option and updated names of settings. How plugin works: Imagine that you are looking at uneven surface - heightmap (image in PDN). Lightness of each pixel represents it's height. You can choose from where is light coming and you can adjust the angle of light. Plugin generates how will heightmap look with your settings. It generates lightness of each pixel by calculating at which angle it is from next pix