---
title: MDLVertexAttributeAnisotropy
framework: modelio
role: symbol
role_heading: Global Variable
path: modelio/mdlvertexattributeanisotropy
---

# MDLVertexAttributeAnisotropy

The attribute data describes the degree to which a surface’s appearance changes in appearance when rotated about its normal vector.

## Declaration

```swift
let MDLVertexAttributeAnisotropy: String
```

## See Also

### Constants

- [MDLVertexAttributeBinormal](modelio/mdlvertexattributebinormal.md)
- [MDLVertexAttributeBitangent](modelio/mdlvertexattributebitangent.md)
- [MDLVertexAttributeColor](modelio/mdlvertexattributecolor.md)
- [MDLVertexAttributeEdgeCrease](modelio/mdlvertexattributeedgecrease.md)
- [MDLVertexAttributeJointIndices](modelio/mdlvertexattributejointindices.md)
- [MDLVertexAttributeJointWeights](modelio/mdlvertexattributejointweights.md)
- [MDLVertexAttributeNormal](modelio/mdlvertexattributenormal.md)
- [MDLVertexAttributeOcclusionValue](modelio/mdlvertexattributeocclusionvalue.md)
- [MDLVertexAttributePosition](modelio/mdlvertexattributeposition.md)
- [MDLVertexAttributeShadingBasisU](modelio/mdlvertexattributeshadingbasisu.md)
- [MDLVertexAttributeShadingBasisV](modelio/mdlvertexattributeshadingbasisv.md)
- [MDLVertexAttributeSubdivisionStencil](modelio/mdlvertexattributesubdivisionstencil.md)
- [MDLVertexAttributeTangent](modelio/mdlvertexattributetangent.md)
- [MDLVertexAttributeTextureCoordinate](modelio/mdlvertexattributetexturecoordinate.md)
- [kUTType3dObject](modelio/kuttype3dobject.md)