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# 4 21-03-2011 , 05:02 PM
LauriePriest's Avatar
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Join Date: May 2003
Location: London
Posts: 1,001
It sounds like you've added a vector (3 value attribute), you just need a float since your driving one value and not somethign that needs 3 like color or position.
Here is an example:
You make a cube called cubeOrig- this is the object your going to deform with a blend shape.
-duplicate the cube and move its verticies around so its different call this cubeMod.
-create a nurbsCircle to use as your controller call this controller.
-select cubeMod and then select cubeOrig and create your blend shape.
-now with cubeOrig selected and looking in the channel box and expanding blendShape1 under inputs you will be able to adjust your blend shape slider (as long as your envelope is 1)
Now your blend shape works!

To have an external controller drive this blend shape :
-select the circle named "controller"
- in the attribute editor add an attribute, make sure its a float and give it a range of 0-10 (this can be whatever you want with set driven keys).. name this attribute blend
-load the set driven key interface load the controller as the driver selecting your blend attribute as the driving attribute.
-load the blendShape1 node (not the cubeOrig - this doesnt hold the blend shape controls on it) to do this open the attribute editor with cubeOrig selected .. on the tabs at the top navigate to the blendShape1 node attributes, click the select button on the bottom left of the attribute editor.
-select the cubeMod as the attribute to drive
- press key
-select the controller and set your blend attribute to 10
- select the blend shape node and set the cubeMod attribute to 1.
-press key

Done


FX supervisor - double negative