Matthew Taylor
Guest
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 Posted:
Sun Jul 18, 2004 8:16 pm Post subject:
Snapping to quadrants on an incomplete ellipse - is it possi |
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Microstation seems to have no Quadrant snap as such - only keypoint snap
that dividesa circle into 4, alllowing to find points to snap to at the
corners & does the same with ellipses.
However, if I trim an ellipse, to form an elliptical arc, I can no
longer snap to it's quadrants - even though IMHO it still has obvious
quadrants to it, & certain other CAD programs can achieve this.
So is there any way I can snap to these quadrants? short of leaving
construction lines for each ellipse I draw - or is the problem due to
some fundamental difference in the way Microstation represents ellipses
in its drawing database & as such does not identify an eliptical arc as
having any special properties other than those of a B-Spline?
--
Matthew Taylor
www.mtaylor.co.uk
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Martin Blanke
Guest
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| Posted:
Mon Jul 19, 2004 11:33 am Post subject:
Re: Snapping to quadrants on an incomplete ellipse - is it p |
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"Matthew Taylor" <matthew.DONOTSPAM@NOSPAM.mtaylor.co.uk> schrieb im
Newsbeitrag news:WpqdnbCgyvCqOWfdRVn-iQ@brightview.com...
| Quote: | However, if I trim an ellipse, to form an elliptical arc, I can no
longer snap to it's quadrants - even though IMHO it still has obvious
quadrants to it, & certain other CAD programs can achieve this.
So is there any way I can snap to these quadrants? short of leaving
construction lines for each ellipse I draw - or is the problem due to
some fundamental difference in the way Microstation represents ellipses
in its drawing database & as such does not identify an eliptical arc as
having any special properties other than those of a B-Spline?
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Hallo Matthew,
the quadrant points are keypoints only at whole circles and ellipses, not at
circular or elliptical arcs, i.e. you can't snap to quadrants at an arc. But
this has nothing to do with the data representation in the database. An arc
is not a b-spline.
Regards, M.B. |
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