Velocity
Particle engine that follows outlines. This plugin first looks for outlines in your content. This could be either an outline of text, logo or something else. You can select what channel you want to use for the outline (red, green, blue, alpha, luminance, hue, saturation) The particles will trace the lines for you. You can set the particle flow to a single line or have individual outlines.
This plugin can be heavy, especially with complex shapes. In order to release some processing power, you can lower the sampling resolution and trigger the update manually on updates. This plugin has many faces and endless possibilities.
