Value > MAXWrapper > Node > Helper > Speed_Test |
Speed_Test lets the particle system check particle speed, acceleration, or the rate of circular travel, and branch accordingly. The test provides a number of variants that let you test speed or acceleration on specific axes, or simply whether the particle is accelerating or decelerating.
0: Velocity Magnitude - Tests the particle velocity, in system units per second, without consideration of direction. This is the default test type.
1: Velocity X/Y/Z - Tests the particle velocity on the specified axis, in system units per second, using the world coordinate system.
2: Acceleration Magnitude - Tests the particle acceleration (change in velocity), in system units per second per second, without respect to direction.
3: Acceleration X/Y/Z - Tests the particle acceleration (change in velocity) on the specified axis, in system units per second per second, using the world coordinate system.
4: Steering Rate - Tests the circular component of particle travel in degrees per second, without consideration of rotation or spinning.
5: True When Accelerates - Returns a True value when the particle velocity is increasing in value.
6: True When Decelerates - Returns a True value when the particle velocity is decreasing in value.
Lets you specify whether the test passes particles on to the next event if the speed test succeeds or fails. Available for all tests except True When Accelerates/Decelerates.
The specific speed or acceleration to test for.
The amount by which value tested for can vary randomly.
The specific angular speed or acceleration to test for.
The amount by which the angular value tested for can vary randomly.
Specifies the time frame to use when animating the Test Values and Variations. Possible values are:
0: Absolute Time - Any keys set for parameters are applied at the actual frames for which they're set.
1: Particle Age - Any keys set for parameters are applied at the corresponding frames of each particle's existence.
2: Event Duration - Any keys set for parameters are applied to each particle starting when it first enters the event.
Specifies a randomization value.