API Reference > imodeljs-common > Rendering > FeatureAppearanceSource FeatureAppearanceSource Interface Interface adopted by an object that can supply a FeatureAppearance given a low-level description of a Feature. see FeatureOverrides for the commonly-used implementation. see FeatureAppearanceProvider to supplement the appearance supplied by this interface. Implemented by FeatureOverrides Methods Name Description getAppearance(elemLo: number, elemHi: number, subcatLo: number, subcatHi: number, geomClass: GeometryClass, modelLo: number, modelHi: number, type: BatchType, animationNodeId: number): undefined | FeatureAppearance Supplies the desired appearance overrides for the specified Feature, or undefined if the feature should not be drawn. Defined in core/common/src/FeatureSymbology.ts Line 238 Last Updated: 29 November, 2022