Autotek autocad raster design 2010 用户手册
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Press Enter to exit the command.
TIP Use raster snapping to make it easier to pick points on the raster entity you
are converting. For more information, see
are converting. For more information, see
(page
237).
Quick Reference
Menu
Image ➤ Vectorization Tools ➤ Arc
Raster Design Toolbar
Command Line
varc
Following Polylines
The polyline follower tools can trace bitonal raster polylines and convert them
to AutoCAD polyline entities or contours.
to AutoCAD polyline entities or contours.
Separate tools are available for vectorizing 2D polylines, contour lines, and
3D polylines.
3D polylines.
Follower tools trace or follow the selected polyline, pausing for input at any
decision point where the follower can no longer proceed on its own. Decision
points occur when the follower meets confusing geometry or reaches the end
of a raster line. You can also use settings in the Raster Design Options dialog
box to instruct the follower to stop at raster intersections.
decision point where the follower can no longer proceed on its own. Decision
points occur when the follower meets confusing geometry or reaches the end
of a raster line. You can also use settings in the Raster Design Options dialog
box to instruct the follower to stop at raster intersections.
The follower traces the polyline in both directions from the point you clicked,
and always presents you with two decision points at the same time. If the
current decision point is not on screen, ProdNameShort automatically pans
to it. At each decision point, you can take one of the following actions:
and always presents you with two decision points at the same time. If the
current decision point is not on screen, ProdNameShort automatically pans
to it. At each decision point, you can take one of the following actions:
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Manually add points. This is useful, for instance, to cross the gaps in
dimension lines created for labels.
dimension lines created for labels.
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Switch to the other decision point.
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