---
title: scaleComponent
framework: spatial
role: symbol
role_heading: Instance Property
path: spatial/projectivetransform3dfloat/scalecomponent
---

# scaleComponent

The projective transform’s scale component.

## Declaration

```swift
var scaleComponent: Size3DFloat { get }
```

## Discussion

Discussion This function computes the scale from the first three rows of the transform matrix and ignores the fourth row.