---
title: matrix
framework: spatial
role: symbol
role_heading: Instance Property
path: spatial/projectivetransform3d/matrix
---

# matrix

The projective transform’s underlying matrix.

## Declaration

```swift
var matrix: simd_double4x4
```

## See Also

### Inspecting a 3D projective transform’s properties

- [inverse](spatial/projectivetransform3d/inverse.md)
- [scaleComponent](spatial/projectivetransform3d/scalecomponent.md)
- [translation](spatial/projectivetransform3d/translation.md)