Returns the position at parameter t along a cubic B spline segment defined by four control point positions.
            
             Category: Curves
            
             Output Ports: Result
            
            
               
                  
                     
                     
                  
                  
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                       The position of the first control point.  
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                       The position of the second control point.  
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                       The position of the third control point.  
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                       The position of the fourth control point.  
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                       The parameter value for which to return the corresponding position on the curve.  
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