Model I/O Constants

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Constants

MDLVertexAttributeAnisotropy

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

MDLVertexAttributeBinormal

The attribute data describes surface binormal vectors.

MDLVertexAttributeBitangent

The attribute data describes surface bitangent vectors.

MDLVertexAttributeColor

The attribute data describes vertex colors.

MDLVertexAttributeEdgeCrease

The attribute data describes edges that should be left unmodified by surface subdivision operations.

MDLVertexAttributeJointIndices

The attribute data describes the indices of bones or joints in a skeletal animation rig.

MDLVertexAttributeJointWeights

The attribute data describes the influence factors of bones or joints on a vertex’s position for use in skeletal animation.

MDLVertexAttributeNormal

The attribute data describes surface normal vectors.

MDLVertexAttributeOcclusionValue

The attribute data describes per-vertex ambient occlusion values.

MDLVertexAttributePosition

The attribute data describes vertex positions.

MDLVertexAttributeShadingBasisU

The attribute data describes the U component of a vector basis for use in shading.

MDLVertexAttributeShadingBasisV

The attribute data describes the V component of a vector basis for use in shading.

MDLVertexAttributeSubdivisionStencil

The attribute data describes which neighboring vertices influence the effect of surface subdivision on the area around a vertex.

MDLVertexAttributeTangent

The attribute data describes surface tangent vectors.

MDLVertexAttributeTextureCoordinate

The attribute data describes surface normal vectors.

kUTType3dObject

The Object file format (common extension .obj).

kUTTypeAlembic

The Alembic file format (common extension .abc).

kUTTypePolygon

The Polygon file format (common extension .ply).

kUTTypeStereolithography

The Stereolithography file format (common extension .stl), also known as the Standard Tessellated Geometry format.

kUTTypeUniversalSceneDescription

The Universal Scene Description file format (common extension .usd).