code: function ToonAnimationMaterial(parameters) {
    if (!parameters.defines) {
      parameters.defines = {};
    }
    parameters.defines['TOON'] = '';
  
    PhongAnimationMaterial.call(this, parameters);
  }
docs: Extends THREE.MeshToonMaterial with custom shader chunks. MeshToonMaterial is mostly the same as MeshPhongMaterial. The only difference is a TOON define, and support for a gradientMap uniform.
  
  @param {Object} parameters Object containing material properties and custom shader chunks.
  @constructor