part of T43469 based on work and image by @MarcD on https://blender.stackexchange.com/questions/43342/how-do-i-use-the-inpaint-node/6707
part of T43469 based on work and image by @MarcD on https://blender.stackexchange.com/questions/43342/how-do-i-use-the-inpaint-node/6707