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About modifying meteor emitter

242 Views 3 Replies Latest reply: May 3, 2012 2:25 AM by teme RSS
teme Level 1 Level 1 (0 points)
Currently Being Moderated
Apr 30, 2012 2:45 AM

There always seems to be some sort of hurdle when I begin to modify the existing emitters, I guess I just don't understand them that well.This time it's the meteor emitter, I inserted it to project, made it larger, cloned the layer and then put 'set speed' behaviour to the clone layer to slow it down. Everything works, but there are random sparkles outside the fireball meteor area, and I want to remove those. Modifying the speed of cell controls seems to do something for those sparkles, but they also change the fireball meteor itself drastically.

  • Alan Apple Mac Level 1 Level 1 (125 points)
    Currently Being Moderated
    Apr 30, 2012 2:54 AM (in response to teme)

    Just tried your workflow in Motion 4 and it work fine here, no odd particles outside of the meteor.


    Let me know yor exact settings for anything you have set for the cloned partcle layer and I will test with those

  • fox_m Level 4 Level 4 (3,335 points)
    Currently Being Moderated
    May 3, 2012 1:36 AM (in response to teme)

    I see what you mean. It looks like the culprit is the Scale Over Life behavior. [...and this has to be a bug!] It seems to only take effect when the Set Speed retiming behavior is applied. [So... *it's not you!* -- go to Apple Menu > Provide Motion Feedback and leave them a note about this.]


    To fix, try this:


    In Scale Over Life, select Increment Type: Custom.


    Turn down the disclosure triangle on Custom Scale. If there isn't a line  with 2 end points (and there's not likely to be), delete the behavior and add it again and set it to Custom Scale (the line with end points should be there).


    Click on the first (left) control point and on the custom scale slider below, double click on the number and set it to 100% (if it's not already that.)  Click on the right control point and double click on the number for the custom scale slider and type in 0. (Trying to drag those things with a mouse is more trouble than it's worth!)


    That *should* get rid of the sparkles.  If not, increase the cell Life slightly (about 0.65 or so) and drag the black opacity swatch on the Color Over Life gradient to about 70 - 75% (you still might get a slight "flash" of sparkles on the last frame -- but I'm fairly sure just dealing with the Scale Over Life behavior will fix it.)


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