MEL

/*
MEL Command: randKeys
Author: Morgan Evans
Website: www.morganevans.net
Date: 2006/09/20
Version: 1.0
Requires: Maya 6.0 or greater
Description: Randomizes selected keys in the graph editor within a user defined range.
Installation: Place this script in your scripts directory and type "randKeys" in the command line.
*/

global proc randKeys()
{
	// check to see if the window exists
	if (`window -exists randKeysWindow`)
		deleteUI randKeysWindow;

	// create the window
	window -title "Randomize Keys" -width 200 randKeysWindow;

		// create the main layout
		columnLayout;

			// create the controls
			floatSliderGrp -label "Amount" -field true -minValue 0 -maxValue 100 -value 10 amountSlider;
			button -label "Randomize" -command "randKeysGo";
			button -label "Close" -command "deleteUI randKeysWindow";

	// show the window
	showWindow randKeysWindow;
}

global proc randKeysGo()
{
	// get the amount from the slider
	float $amount = `floatSliderGrp -query -value amountSlider`;

	// get the selected keys
	string $keys[] = `keyframe -query -name`;

	// loop through the keys
	for ($key in $keys)
	{
		// get the value of the key
		float $value = `keyframe -query -valueChange $key`;

		// get the random value
		float $rand = `rand (-$amount) $amount`;

		// set the new value
		keyframe -edit -valueChange ($value + $rand) $key;
	}
}