API Reference > Classes > PRC Curve Classes > OdPrcHelixType1Curve Class > OdPrcHelixType1Curve Methods > OdPrcHelixType1Curve::unitU Method
OdPrcHelixType1Curve::unitU Method
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Syntax
C++
const OdGeVector3d & unitU() const;
Description

Returns the current unit_u vector represented as a constant reference to an OdGeVector3d object. The unit_u vector determines the X-axis for the helix's coordinate system.

Group
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