Gravity by Marker

Simulating gravity turning on by a marker.

After Effects CS3
Useful things
Expressions

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Imagine objects floating in zero-g, all the sudden gravity is introduced and the objects fall off the screen.
Just put a layer marker wherever you want it to start falling.

//applyTo: position
g = 1000; // gravitational constant
if (marker.numKeys > 0 && time > marker.key(1).time){
t = time - marker.key(1).time;
y = g*t*t/2;
value + [0,y]
}else{
value
}

Expression by Dan Ebberts

Keywords

Falling, Markers, Gravity, zero-g

(Min. Version: After Effects CS3, Category: Useful things, Type: Expressions)

posted by MadDocc on Dec 04, 2010

Quick Gravity - BatchFrame

Use Quick Gravity to add a falling and bouncing effect to a layer or layers in your composition quickly and easily.

After Effects CS4
Useful things
Presets (ffx)

Views: 11455
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posted by MicGyver on Jul 18, 2011

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Object bouncing on a floor

This will make your layer/object bounce along an imaginary 'floor'. Paste it into the 'position' attribute for your layer.

After Effects 6
Design/Objects
Expressions

Views: 7870
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posted by MicGyver on Sep 15, 2008

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Expressions triggered by a marker

Here is an expression for having a marker trigger a squish and squash. Put the expression on Scale.

After Effects 7
Useful things
Expressions

Views: 15244
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posted by MicGyver on Feb 15, 2009

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Gravity by Marker

Keywords

Related topics:

Quick Gravity - BatchFrame

Object bouncing on a floor

Expressions triggered by a marker