does Rhino 8 have the capability to add arrows at the ends of a non-linear line? I need to specify the internal extent of the 16 finish on an elliptical horn; see attached. Thanks!
‘Arrowhead’
The problem with arrowheads currently is that they are “screen-space” objects (like Dots) that do not change size with zoom levels. They are unlike the actual dimension object arrowheads which have a dimension style-specified fixed size when displaying/printing. As far as I know a this has not yet been implemented for just adding an arrowhead to a curve.
thanks guys!
Art
One of the problems is that curves in Rhino can be in 3D space, whereas arrowheads (were they to be real geometry and not just screen pixels) are 2D planar objects. So the question becomes how they are oriented to the curve… this is perhaps one reason why we don’t have this implemented yet.
Annotation dimension objects solve this by staying planar. The only arrow shape that could display consistently in all views for 3D curves would actually be some variation of a cone shape.
If the arrows were limited to planar curves, then something could probably be done, perhaps a new annotation type object that always lies in the plane of the curve. Editing a curve that had such arrows to make it non-planar might just cause the arrows to go away, with or without a warning.