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- .TH STANGENT
- 6 "IRIT Version 6.0"
- .SH NAME
- STANGENT
-
-
-
- VectorType STANGENT( SurfaceType Srf, ConstantType Direction,
- NumericType UParam, NumericType VParam )
-
- or
-
- VectorType STANGENT( TrimSrfType Srf, ConstantType Direction,
- NumericType UParam, NumericType VParam )
-
- Computes the tangent vector to (possibly trimmed) surface Srf at the
- parameter values UParam and VParam in Direction. The
- returned vector has a unit length.
-
- Example:
-
- Tang = STANGENT( Srf, ROW, 0.5, 0.6 );
-
- computes the tangent to Srf in the ROW direction at the parameter
- values (0.5, 0.6).
-