Ungoliant Posted June 15, 2009 Share Posted June 15, 2009 Hello people, one question, how can i do particle rate, based in a velocity factor, i have a "variable non defined" issue, can anybody explain me this? Thanks in advance Quote Link to comment Share on other sites More sharing options...
SpencerL Posted June 15, 2009 Share Posted June 15, 2009 (edited) Hello people, one question, how can i do particle rate, based in a velocity factor, i have a "variable non defined" issue, can anybody explain me this?Thanks in advance Are you talking about the velocity of the emittier? If thats the case, in the birth probability of your Source POP, you can assign a float value for the min and max. Velocity is a vector, so what you probably want is the vectors length. if you put in the prob min and max length($VX, $VY, $VZ) this will generate N particles based on the speed of your emitter. you can mult up or down the length() expression as needed. Edited June 15, 2009 by SpencerL Quote Link to comment Share on other sites More sharing options...
Ungoliant Posted June 16, 2009 Author Share Posted June 16, 2009 Are you talking about the velocity of the emittier? If thats the case, in the birth probability of your Source POP, you can assign a float value for the min and max. Velocity is a vector, so what you probably want is the vectors length. if you put in the prob min and max length($VX, $VY, $VZ) this will generate N particles based on the speed of your emitter. you can mult up or down the length() expression as needed. Thanks spencer for the fast reply, work great Quote Link to comment Share on other sites More sharing options...
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