/// \param theX the X projection value
/// \param theY the Y projection value
/// \param theZ the Z projection value
- virtual void setViewProjection(double theX, double theY, double theZ) = 0;
+ /// \param theTwist the twist angle in radians
+ virtual void setViewProjection( double theX, double theY, double theZ,
+ double theTwist ) = 0;
/// Add selection filter to the viewer
/// \param theFilter a selection filter