Note that the geodesic curve is transformed into graphical coordinate space for plotting, so that a straight line in physical coordinates may result in a curved line being drawn if the Mapping involved is non-linear. Any discontinuities in the Mapping between physical and graphical coordinates are catered for, as is any clipping established using astClip.
If you need to draw many geodesic curves end-to-end, then the astPolyCurve function is equivalent to repeatedly using astCurve, but will usually be more efficient.
No curve is drawn if either of the
" arrays contains any
coordinates with the value AST__BAD.
An error results if the base Frame of the Plot is not 2-dimensional.
An error also results if the transformation between the current and base Frames of
the Plot is not defined (i.e. the Plot
’ s TranInverse attribute is zero).