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  • gravity and stock pilling expression

    Posted by Rafael on April 28, 2005 at 6:52 pm

    I am wondering if this is possible in After Effects, or if this should be done in a 3D software. I am wondering if it is possible to create an animation with images falling from the top of the screen and starting to stack over each other. The collision of each object been defined by eithr an alpha channel or a mask.
    I remeber seen an expression by Dan Ebberts about creating one object atracting or repulsing the others. But the perimenter of the anchor point was defining the range of collision with th other elements. Is mask applicable as a perimeter for the collision?
    If anyone could just tell me if this is possible in After Effects, or just move on a 3D package… Or does Combustion may do the trick?

    Rafael replied 18 years, 11 months ago 3 Members · 3 Replies
  • 3 Replies
  • Dan Ebberts

    April 28, 2005 at 7:09 pm

    This would be tough to do in After Effects. Expressions don’t have access to mask info.


  • Mylenium

    April 29, 2005 at 6:47 am

    Nope, neither AE or combustion* will do the trick. AE’s expressions cannot access masks or per-pixel information and combustion*’s particles are “dumb” – they don’t interact with each other and hence cannot be stacked. Depending on the complexity you could get away with stacking your images manually and apply an expression that will make them “fall” towards the top. With a Null object and methods such as ease() in your expression you could control which layers move first and animate everything easily. Then play everything in reverse et-voil

  • Rafael

    April 29, 2005 at 9:09 pm

    thanks for your answers.

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