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Particle Flow Tools: Freebies

An assortment of operators provided by Orbaz Technologies to Particle Flow users that are available for free download.

Camera Culling Operator

Camera Culling can reduce the geometry load in the viewports and/or at render time by filtering out all particles not visible to the camera. The operator can be used as a group selection tool to define a group by the camera view frustum.

Camera IMBlur Operator

The Camera IMBlur operator is intended for use when rendering a particle system with motion blur as viewed from an animated camera. It corrects a problem in which Image Motion Blur doesn't take camera motion into account when rendering a particle system. The operator adjusts the particle speed, accounting for camera motion, before it's passed to the viewport display and/or the renderer.

Copy Out Test

The Copy Out test is a simplified version of the Spawn test that you can use to reduce overhead in the particle system when you simply want to duplicated particles without using other Spawn settings. It simply makes one or more copies of each particle that's sent to it.

Display Script Operator

The Display Script operator is a diagnostic tool that lets you display viewport data associated with each particle. The data is generated from a script prior to Display Script in the event, and you can use multiple occurrences of Display Script in an event. For example, you can display each particle's velocity, size, and distance from a given object.

Stop Operator

Normally in Particle Flow, when you want to stop particles, you need to add a Speed or Spin operator (or both) and then set their values to 0. Now you can just drop the Stop operator in a new event, and voila: particles stop completely as soon as they enter the event. The operator has check boxes for Position and Rotation, so you can choose to stop linear motion or angular velocity, or both if you like.

Stop Gradually Test

This test builds on the capabilities of the Stop operator, letting you stop particles gradually. You can set the time at which particles should begin slowing down, as well as the time at which they should come to a complete halt. Both times can be synchronized with the entire animation, or particle age, or event duration, and you can vary these times randomly as an option. Because Stop Gradually is a test, when particles are completely stopped, you can redirect them to another event.

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