use crateRgb;
/// Per-object shading parameters.
/// 每个对象的着色参数。
///
/// First version only carries a tint; texture tint and additional surface parameters are added without breaking the constructor shape.
/// 首个版本只携带一个色调;纹理色调和额外的表面参数会在不破坏构造函数形态的前提下添加。