---
title: altitudeAngle
framework: uikit
role: symbol
role_heading: Instance Property
path: uikit/uitouch/altitudeangle
---

# altitudeAngle

The altitude (in radians) of the stylus.

## Declaration

```swift
var altitudeAngle: CGFloat { get }
```

## Discussion

Discussion A value of 0 radians indicates that the stylus is parallel to the surface. The value of this property is Pi/2 when the stylus is perpendicular to the surface.

## See Also

### Getting touch attributes

- [tapCount](uikit/uitouch/tapcount.md)
- [timestamp](uikit/uitouch/timestamp.md)
- [type](uikit/uitouch/type.md)
- [UITouch.TouchType](uikit/uitouch/touchtype.md)
- [phase](uikit/uitouch/phase-swift.property.md)
- [UITouch.Phase](uikit/uitouch/phase-swift.enum.md)
- [force](uikit/uitouch/force.md)
- [maximumPossibleForce](uikit/uitouch/maximumpossibleforce.md)
- [azimuthAngle(in:)](uikit/uitouch/azimuthangle(in:).md)
- [azimuthUnitVector(in:)](uikit/uitouch/azimuthunitvector(in:).md)
- [rollAngle](uikit/uitouch/rollangle.md)