API Reference > imodeljs-common > Rendering > RenderMaterial.Params RenderMaterial.Params Class Parameters used to construct a RenderMaterial Methods Name Description constructor(key?: string): RenderMaterial.Params fromColors(key?: string, diffuseColor?: ColorDef, specularColor?: ColorDef, emissiveColor?: ColorDef, reflectColor?: ColorDef, textureMap?: TextureMapping): RenderMaterial.Params Static Create a RenderMaterial params object using specified key and ColorDef values, as well as an optional texture mapping. Properties Name Type Description alpha Accessor number | undefined A value from 0.0 (fully-transparent) to 1.0 (fully-opaque) controlling the transparency of surfaces to which this material is applied; ambient number Currently unused. defaults Static RenderMaterial.Params Obtain an immutable instance of a RenderMaterial with all default properties. diffuse number Diffuse weight in [0..1] diffuseColor undefined | ColorDef Diffuse color, or undefined if this material does not override the surface's own color. emissiveColor undefined | ColorDef Currently unused. key undefined | string If the material originates from a Material element in the IModelDb, the Id of that element. reflect number Currently unused. reflectColor undefined | ColorDef Currently unused. refract number Currently unused. shadows boolean Currently unused. specular number Specular weight in [0..1] specularColor undefined | ColorDef Specular color. specularExponent number textureMapping undefined | TextureMapping Optional pattern mapping applied to the surface. Defined in core/common/src/RenderMaterial.ts Line 38 Last Updated: 13 June, 2024