View Full Version : Rotation based on one object

03 March 2011, 08:33 PM
Hello everybody,

I am very new to scripting, and I'm sure this has been covered before but I had a hard time knowing what to search for to find my answer, so I apologize if this is redundant.

I am trying to basically have a bunch of objects in a string rotate by a fraction of what the object before it does. So if I have objects A B and C, and I rotate A 100, B would be 90, C would be 81 etc.

I have it working where I hit the button, and it positions them correctly, but I can't figure out how link them via an expression or something so that I can move object A and the other objects would move in relation to that without hitting the button.

Here is my current script:

// rotates the object 90% of object below

string $feathers[] = `ls -sl`; int $i = 0;
for ($i=1; $i<size($feathers); $i++)
float $ro = `getAttr($feathers[$i-1] + ".rotateY")`;
setAttr ($feathers[$i]+".rotateY") ($ro*.9);

If anybody can point me in the right direction, you would be helping me out BIG time!

Thanks a lot!

11 November 2011, 07:57 AM
cubeB.rotateY = cubeA.rotateY*0.9;
cubeC.rotateY = cubeA.rotateY*0.8;

//in the expression editor

11 November 2011, 04:27 AM
You can also do this in Python.

create a bunch of cubes, select all of them apart from pCube1 and run this....

import maya.cmds as mc
driven =
ct = 1

for i in range(0,len(driven),1):
multi = mc.createNode('multiplyDivide')
StoreMulti ='multiply*')
mc.connectAttr ("pCube1" + '.ry',(StoreMulti[i])+'.input1X')
ct = ct - 0.1
sum = ct
print sum
mc.setAttr((StoreMulti[i])+'.input2X', sum)
mc.connectAttr((StoreMulti[i])+'.outputX',(driven[i]) + '.ry')

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11 November 2011, 04:27 AM
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