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# USDPlayer.MeshData

Mesh geometry data from a USD mesh prim.

```
struct MeshData
```

## Topics

### Structures

[`struct Update`](/documentation/USDKit/USDPlayer/MeshData/Update)

Delta update carrying only the mesh fields that changed since the last frame.

### Instance Properties

[`let assignedMaterials: [USDPlayer.MaterialID]`](/documentation/USDKit/USDPlayer/MeshData/assignedMaterials)

Material IDs bound to each mesh part, in order.

[`let descriptor: LowLevelMesh.Descriptor`](/documentation/USDKit/USDPlayer/MeshData/descriptor)

Low-level mesh descriptor.

[`let id: USDPlayer.MeshID`](/documentation/USDKit/USDPlayer/MeshData/id)

Unique identifier for this mesh resource.

[`let indexData: Data`](/documentation/USDKit/USDPlayer/MeshData/indexData)

Index buffer data.

[`let instanceTransforms: [float4x4]`](/documentation/USDKit/USDPlayer/MeshData/instanceTransforms)

World-space transforms for each mesh instance.

[`let meshType: USDPlayer.MeshData.MeshType`](/documentation/USDKit/USDPlayer/MeshData/meshType-swift.property)

Whether the mesh is rigid or driven by a deformation resource.

[`let parts: [LowLevelMesh.Part]`](/documentation/USDKit/USDPlayer/MeshData/parts)

Low-level mesh parts.

[`let primPath: String`](/documentation/USDKit/USDPlayer/MeshData/primPath)

USD prim path this mesh corresponds to.

[`let vertexData: [Data]`](/documentation/USDKit/USDPlayer/MeshData/vertexData)

Vertex buffer data.

### Enumerations

[`enum MeshType`](/documentation/USDKit/USDPlayer/MeshData/MeshType-swift.enum)

Distinguishes static and deformable mesh geometries.

## Relationships

### Conforms To

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Sendable`](/documentation/Swift/Sendable)

---

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