A Tree Creating Model Based on Stroke and Multi-pass with its Implementation

In order to generate virtual scene or work of art by non-photorealistic graphics rendering, a tree-creating model based on stroke and multi-pass rendering is proposed. The model enables painters to select an appropriate paintbrush model of leaf and its parameters in multi-pass rendering and to optimize repeatedly the paintbrush stickup position till the satisfactory tree morphology is obtained, thus to render painting works with distinct hand-painted Chinese painting style. This method is a good try in creating non-photorealistic artistic works by using stroke rendering technique.