Shading

Toon shading, or cel shading, gives 3D geometry a flat, cartoon-like look by quantizing diffuse reflection into a finite number of discrete shades. In this p5.js v2 version the shader is written as a baseMaterialShader().modify() hook using the p5.strands DSL — no raw GLSL strings, no hand-written vertex shader. createPanel wires the color and shades controls to the shader automatically each frame. Toon shader The combineColors hook in baseMaterialShader().modify() receives the eye-space vNormal varying directly — no vertex shader boilerplate required. Diffuse intensity is the dot product of the surface normal and the (normalized) light direction; it is then snapped into discrete bands to produce the cel-shading look. ...