Twirl
The Twirl image effect distorts the rendered image within a circular region. The pixels at the centre of the circle are rotated by a specified angle; the rotation for other pixels in the circle decreases with distance from the centre, diminishing to zero at the circle’s edge.
Twirl is similar to another image effect called Vortex, although vortex distorts the image around a central circle rather than a single point.
As with the other image effects, you must have the Standard Assets Effects package installed before it becomes available.
Properties
| Property: | Function: |
|---|---|
| Radius | The radius of the ellipse where image distortion occurs, given in normalized screen coordinates (ie, a radius of 0.5 is half the size of the screen). |
| Angle | The angle of rotation at the centre point. |
| Center | The point at the centre of the circle where distortion occurs. |
Hardware Support
This effect should run on all hardware that Unity supports.
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