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Activity Forums Adobe After Effects Expressions expressing particular z depth

  • expressing particular z depth

    Posted by Chicken Kebab on September 8, 2006 at 9:52 am

    Hi everyone, I’m relativly new to expressions and this forum so please excuss me if this is an idiotic question.

    I want to create a 3d stroke that can be accuratly drawn along all 3 axis. I tried to use “trapcode 3d stroke” for this but found i could not control the z depth variation accuratly enough (only being able to roughly bend the stroke) so i figured “particular” would do the trick if I could pick whip link the emitter to a 3d guide layer and then control that in 3d space. this works great but is tricky to use.

    here’s my problem, the 3d guide layer has 3 variables under it’s single position atribute (x,y,z) and the “particular” emiter has only two (x,y) so to define it’s z depth i need to independlty animate the entire “particular” layer on it’s z plane, this works but is very clumbersome. Is there a way to express the z value of the “particular” layer so it is linked to the z value of the posistion atribute on the guide layer.

    I hope this makes sense. At the end of the day i just want to move the guide layer on all axis and have the emiter follow it.

    any help would be awesome
    Thanks

    Chicken Kebab replied 19 years, 8 months ago 2 Members · 2 Replies
  • 2 Replies
  • Steve Roberts

    September 8, 2006 at 1:30 pm

    [Chicken Kebab] “and the “particular” emitter has only two (x,y) … “

    Not so. Look closely at the Particular emitter controls.

  • Chicken Kebab

    September 12, 2006 at 8:11 am

    I know there is a z depth on the emiter but it had been seperated from the position attributes, so I was unable to do a straight pic whip link to the 3d layers position which contained all three values in one variable.

    But I have sorted it out, I wasn’t aware you could pick whip the seperate individual variables instead of the entire position attribrute.

    Thanks though.

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