• Adobe After Effects Expressions

  Ramp down spiral animation

  Posted by Dino Muhic on July 18, 2011 at 12:20 am

  Hi, I have this code which makes a spiral movement

  shrink=time+1
radius=1000/shrink
angle=time*200
x=radius*Math.cos(degreesToRadians(angle))
y=radius*Math.sin(degreesToRadians(angle))
//z=0 // no depth
z=time*time // with depth
centre=[640,360,0]
add(centre,[x,y,z])
  Now I want that spiral to ramp down with the speed (going from a small radius to a wider radius).
  For the radius to grow I know that I need to change the second line to radius=10*shrink or something like that (as far as I understood).
  But how can I achieve the effect that the speed in which the object is travelling decreases over time?

  Thank you very much!

  Dino Muhic – Media Producer
  VFX – Motion Graphics – Web-Design – Or just ART
  http://www.dinomuhic.com

  Dino Muhic replied 14 years, 10 months ago 1 Member · 0 Replies
• 0 Replies

Reply to this Discussion! Login or Sign Up