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Particle emit exact number every 15 frames
Hi everyone, I have a question.
I wanted a particle emitter to emit 100particle/second for 15 frames every 30 frames (1/2 sec.)
so it would go :
frame 0 to 15, 0 particle.
frame 15 to 30, 100 particle.
next 15 frames, 0 particle.
next 15 frames, 100 particle.so on and so forth.
I have difficulty pinpointing the conditions to be used.
what should I use? will timecode work? and if so, can someone help me find out the conditional for the if statement?
maybe a while statement work better?pseudocode:if (frames = first 15 frames in a second) // I need help with the conditions
{
emit 0 particles;
}else{
emit 100 particles/sec;
}
Motion Graphics Designer
https://www.chaosraven.com -
3 Replies
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something like this should work:
Math.round(time%1)*100
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW -
It depends on what particle system you are using. I think both CC and Particular only allow you to animate the speed at which particles are emitted, not the exact number of particles.
In case you mean that, for example, in Particular, you can use this expression in the Particles/sec property:
((timeToFrames() % 30) < 15) ? 100 : 0It may be hard to see the effect until you adjust the particle life to 0.5s (on a 30fps frame rate).
Xinlai Ni
Software Engineer, Google Inc. -
this would be more flexible, allowing for the low end of the cycle to have a value other than 0. plus it’s easier to adjust the interval and other values if needed.
minParticles = 0;
maxParticles = 100;
interval = 1; // value in secondsn = time%interval;
if (n < interval/2) minParticles else maxParticlesKevin Camp
Senior Designer
KCPQ, KMYQ & KRCW
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