The Vortex image effect distorts the rendered image within a circular region. Pixels in the image are displaced around a central circular area by a specified angle; the amount of displacement reduces with distance from the centre, diminishing to zero at the circle's edge. Vortex is similar to another image effect called Twirl, although Twirl distorts the image around a point rather than a circle.

As with the other image effects, this effect is only available in Unity Pro and you must have the Pro Standard Assets installed before it becomes available.

Vortex image effect applied to the scene
RadiusThe radius of the circle where distortion occurs, given in normalized screen coordinates (ie, a radius of 0.5 is half the size of the screen).
AngleThe angle by which pixels are displaced around the central circle.
CenterThe center of the circular region of distortion.

Hardware support

This effect requires a graphics card with pixel shaders (2.0) or OpenGL ES 2.0. PC: NVIDIA cards since 2003 (GeForce FX), AMD cards since 2004 (Radeon 9500), Intel cards since 2005 (GMA 900); Mobile: OpenGL ES 2.0; Consoles: Xbox 360, PS3.

All image effects automatically disable themselves when they can not run on end-users graphics card.

Page last updated: 2013-02-01