---
title: MTLAccelerationStructureMotionCurveGeometryDescriptor
framework: metal
role: symbol
role_heading: Class
path: metal/mtlaccelerationstructuremotioncurvegeometrydescriptor
---

# MTLAccelerationStructureMotionCurveGeometryDescriptor

## Declaration

```swift
class MTLAccelerationStructureMotionCurveGeometryDescriptor
```

## Mentioned in

Improving ray-tracing data access using per-primitive data

## Topics

### Instance Properties

- [controlPointBuffers](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/controlpointbuffers.md)
- [controlPointCount](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/controlpointcount.md)
- [controlPointFormat](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/controlpointformat.md)
- [controlPointStride](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/controlpointstride.md)
- [curveBasis](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/curvebasis.md)
- [curveEndCaps](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/curveendcaps.md)
- [curveType](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/curvetype.md)
- [indexBuffer](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/indexbuffer.md)
- [indexBufferOffset](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/indexbufferoffset.md)
- [indexType](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/indextype.md)
- [radiusBuffers](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/radiusbuffers.md)
- [radiusFormat](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/radiusformat.md)
- [radiusStride](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/radiusstride.md)
- [segmentControlPointCount](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/segmentcontrolpointcount.md)
- [segmentCount](metal/mtlaccelerationstructuremotioncurvegeometrydescriptor/segmentcount.md)

## Relationships

### Inherits From

- [MTLAccelerationStructureGeometryDescriptor](metal/mtlaccelerationstructuregeometrydescriptor.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Motion geometry descriptors

- [MTL4AccelerationStructureMotionTriangleGeometryDescriptor](metal/mtl4accelerationstructuremotiontrianglegeometrydescriptor.md)
- [MTLAccelerationStructureMotionTriangleGeometryDescriptor](metal/mtlaccelerationstructuremotiontrianglegeometrydescriptor.md)
- [MTL4AccelerationStructureMotionCurveGeometryDescriptor](metal/mtl4accelerationstructuremotioncurvegeometrydescriptor.md)
- [MTL4AccelerationStructureMotionBoundingBoxGeometryDescriptor](metal/mtl4accelerationstructuremotionboundingboxgeometrydescriptor.md)
- [MTLAccelerationStructureMotionBoundingBoxGeometryDescriptor](metal/mtlaccelerationstructuremotionboundingboxgeometrydescriptor.md)
- [MTLMotionKeyframeData](metal/mtlmotionkeyframedata.md)