How to reverse Animation Curve?

[spazzmonkeys]

Well, I managed to figure something out myself. If anyone needs to reverse an animation curve in the future, here's the code I came up with. I'm fairly sure it only works with weighted curves though.

global proc inverseCurve(string $curve){
//this is closer to reversing a curve, but that is already a named command.
int $numKeys = `keyframe -q -kc $curve`;
float $tempFloat[];
float $yVal[];
float $xVal[];
float $ox[];
float $oy[];
float $ix[];
float $iy[];
for($x = 0; $x < $numKeys; $x++){
$tempFloat = `keyframe -in $x -a -q -vc $curve `; $yVal[$x] = $tempFloat[0];
$tempFloat = `keyframe -in $x -a -q -fc $curve `; $xVal[$x] = $tempFloat[0];
$tempFloat = `keyTangent -in $x -q -ox $curve `; $ox[$x] = $tempFloat[0];
$tempFloat = `keyTangent -in $x -q -oy $curve `; $oy[$x] = $tempFloat[0];
$tempFloat = `keyTangent -in $x -q -ix $curve `; $ix[$x] = $tempFloat[0];
$tempFloat = `keyTangent -in $x -q -iy $curve `; $iy[$x] = $tempFloat[0];
}
for($x = 0; $x < $numKeys; $x++){
keyframe -in $x -a -o over -fc $yVal[$x] -vc $xVal[$x] $curve;
keyTangent -in $x -ox $oy[$x] -oy $ox[$x] -ix $iy[$x] -iy $ix[$x] $curve;
}
}


I would still like to know why the tangent angles in maya don't move in a linear fashion, if anyone knows. You never know when you'll need to know stuff like that in the future!

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