setAttribute method
      
BufferGeometry
setAttribute(
    
- Attribute type,
 - dynamic attribute
 
inherited
    Sets an attribute to this geometry. Use this rather than the attributes
property, because an internal hashmap of attributes is maintained
to speed up iterating over attributes.
Implementation
BufferGeometry setAttribute(Attribute type, attribute) {
  attributes[type.name] = attribute;
  return this;
}