Ink painting simulation method of three-dimensional tree model

The invention discloses an ink painting simulation method of a three-dimensional tree model. The ink painting simulation method of the three-dimensional tree model includes the following steps: dividing the tree model into a trunk portion, a branch portion and a leaf portion, and conducting rendering and drawing on the three portions respectively; for the trunk portion, directly mapping defined texture images to the three-dimensional tree model to generate ink painting effects by adopting a render method of two-dimensional texture mapping; for the branch portion, directly conducting color filling on branches by using average values of branch texture colors; and for the leaf portion, conducting model simplification, stroke surface construction, drawing direction confirmation, ink color confirmation, brush pen construction and drawing render to complete ink painting artistic style simulation of leaves. According to the ink painting simulation method of the three-dimensional tree model, ink painting simulation effects of the three-dimensional tree model are achieved, and the method can be made into plugins which can be used in three-dimensional processing software of 3D Max, Maya and the like, and the ink painting simulation method of the three-dimensional tree model can be further applied in fields of art education, digital entertainment, 3D animations, games and the like.