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Create Deformers > Wrap |
Create Deformers > Wrap > Create Wrap > 
Weight Threshold
Specifies the influence of the wrap influence objects’ shapes based on the proximity of their components to the objects being deformed. Depending on the point density (for example, the number of CVs) of the wrap influence objects, changing the Weight Threshold can change the overall smoothness of the deformation effect. Values range from 0.000 (smooth) to 1.000 (sharp). Use the slider to select values from 0.000 to 1.000. Default is 0.000.
Limit Influence Area
Turn Use Max Distance on to set the Max Distance. The influence area is constrained by the Weight Threshold attribute.
Max Distance
Specifies the influence area of wrap influence object points. By limiting the influence area with Max Distance, you can limit how much memory Maya requires to perform the deformation. The less memory required, the better the performance. Using Max Distance is especially useful when you are working with high-resolution wrap influence objects.
Max Distance’s value is in Maya’s working units, which are by default centimeters (Window > Settings/Preferences > Preferences > Settings > Working Units). The default Max Distance is 1. The default value limits the influence area to within a distance of 1 unit from each point. A Max Distance of 1 requires less memory than 0 (infinite influence area constrained by the weight threshold) or any setting less than 0.1 because it greatly limits the influence area.
Maya allocates memory for the wrap deformer when it is created. You can change Max Distance after you create the wrap deformer. That can also improve performance, but for best results try to set the desired value as a creation option. Of course, deciding on the best Max Distance value may require some experimentation. In general, for best performance, you’ll want to try minimize Max Distance to some value greater than 0. Note that setting Max Distance to 0 would be better than setting it to a relatively large number (for example, 30), and then lowering the Weight Threshold as desired. This is because a relatively large number will cause more memory allocation than the default setting of 0, even though 0 specifies an infinite influence area. To find the best value, start with 1 or a very small value, and then increase the Max Distance until you reach the value you want.