Feedback
Creates radial feedback and vortex effects.

Simple Feedback | Sinus Feedback | Cosinus Feedback
Tangens Feedback | Special Feedback |

Feedback Slider | Determines the amount of radial feedback loops.
Vortex Slider | Creates a kind of vortex effect. If set to zero there will be no vortex effect.
Zoom Slider | Lets you zoom and stretch the image. High Zoom values are only usefull, if the Feedback and Vortex sliders have high values.
Angle Slider | Lets you rotate the image up to 360 degrees.
Angulate / Radiate Check Box | If activated, there will be an angular/radial effect which can be adjusted by right clicking on the preview. If both check boxes are activated, it is possible to position the center of the effect by right clicking on the preview.