### Bounce from the wall like from the floor

Posted:

**July 26th, 2008, 1:04 am**Try to make effect like here http://www.adobe.com/type/, like a Steve Holmes, from Energy Design make. I find bouncing text effect in AE CS3 presets, but it works only along Y axis (vertical direction). How I can modificate it? Or can some one help with scalebel expression for different tasks? Resume: want to make bouncing effect not from the floor only, but from the right or left wall.

Also find this one at http://forums.creativecow.net/readpost/2/917108, but it bouncing and sliding from the floor

For Position:

Thank's for help!

Also find this one at http://forums.creativecow.net/readpost/2/917108, but it bouncing and sliding from the floor

For Position:

Code: Select all

```
Vy0 = 800; //initial y velocity (pixels/second)
Vx0 = 450; // initial x velocity (pixels/second)
g = 2500; // gravity (pixels/second/second)
floor = 400;
e = .85; //elasticity
b = floor - position[1];
h = b + Vy0*Vy0/(2*g);
T = Vy0/g + Math.sqrt(2*h/g);
if (time < T){
y = Vy0*time - g*time*time/2 + b;
}else{
Vy = -(Vy0 - g*T);
while (true){
Vy *= e;
t = T;
T += 2*Vy/g;
if (time < T){
t = time - t;
y = Vy*t - g*t*t/2;
break;
}else if (T - t < thisComp.frameDuration){
y = 0;
break;
}
}
}
[position[0] + Vx0*(-Math.pow(2,-time) +1), floor - y]
```