The grass is made by maya mash. I need to make a plane for the leaves, and a sphere for the base of the grass. Then use mash to copy the leaves onto the sphere, and use random to adjust the irregular rotation angle of the leaves and the animation of shaking.
Since the art style of the final project is hand-painted, I looked for a lot of tutorials when making the materials of leaves and grass. Because the foliage of the grass is dense, the effect of the material cannot be realistic, and the light and shadow have to be a 2D effect. The material is surface shader because it needs to combine aitoon and transparency. The model of the leaf is a rectangular plane, so it is necessary to make a black and white picture of the leaf shape as a transparency map, connected to transparency. So that the plane can be rendered with the shape of the leaf. At the same time, tuning aitoon’s specular and sheen can help me make 2D visuals of the grass.