materials

type Builder interface {
	Create() Builder
	WithID(id *uuid.UUID) Builder
	WithAlpha(alpha alphas.Alpha) Builder
	WithShader(shader shaders.Shader) Builder
	WithViewport(viewport viewports.Viewport) Builder
	WithLayers(layers []layers.Layer) Builder
	Now() (Material, error)
}

type Material interface {
	ID() *uuid.UUID
	Alpha() alphas.Alpha
	Shader() shaders.Shader
	Viewport() viewports.Viewport
	Layers() []layers.Layer
}