Create an nHair Point to Surface constraint

You can create a Point to Surface constraint to attach hair curve CVs to a target surface such as a deforming nCloth surface, or a passive collision object. For example, you can use a Point to Surface constraint to hold an nCloth hat or head-band to a character's hair.

To create an nHair Point to Surface constraint

1. In the scene view, select the hair curve CVs you want to constrain. See Select curve components for nConstraints.
2. -select the target surface to which you want to constrain the hair curves components.

   The target surface can be an nCloth or passive object, or a non-Nucleus polygon mesh.

   Note

   If you selected a target surface that is a nCloth or passive collision object, the surface will be made a passive object when the constraint is created.

3. In the nDynamics menu set, select nConstraint > Point to Surface.

   The nHair curves components you selected are now constrained to the selected target surface, and they are now connected to the nHair system's Maya Nucleus solver through a dynamicConstraint node.

   The preset properties on the dynamicConstraint node determine the constraint’s type (in this case, a Point to Surface constraint) and how it behaves. For example, you can create a Point to Surface constraint with the following attribute settings:

   • Spring as the Constraint Method
   • Object to Object as the Constraint Relation
   • All to First as the Component Relation
   • Within Max Distance as the Connection Method
   • At Start as the Connection Update

   See dynamicConstraintShape.

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