Autotek autocad raster design 2010 用户手册
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If OSNAP is inactive, or at least one point was not osnapped,
ProdNameShort determines if POLAR or ORTHO snap is active. If so,
ProdNameShort aligns the line by moving the endpoint. If one point was
snapped earlier, then the free end is automatically considered the endpoint.
ProdNameShort adjusts the angle about the start point without changing
the length. The angle snap occurs only if the new endpoint falls within
the tolerance distance.
ProdNameShort determines if POLAR or ORTHO snap is active. If so,
ProdNameShort aligns the line by moving the endpoint. If one point was
snapped earlier, then the free end is automatically considered the endpoint.
ProdNameShort adjusts the angle about the start point without changing
the length. The angle snap occurs only if the new endpoint falls within
the tolerance distance.
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If Round Values is enabled, the line length is rounded to the precision
specified on the VTools General tab of the Raster Design Options dialog
box.
specified on the VTools General tab of the Raster Design Options dialog
box.
(page 250).
Vectorizing Raster Geometry
ProdNameShort provides separate vectorization tools to convert raster lines,
polylines, rectangles, circles, and arcs.
polylines, rectangles, circles, and arcs.
Depending on which raster line type you select, ProdNameShort creates an
AutoCAD line or polyline entity with the same position and dimensions as
the raster original. Once ProdNameShort has vectorized a line segment, you
can verify its geometry (including angle and length), switch the start point
and endpoint, and trim or extend the line.
AutoCAD line or polyline entity with the same position and dimensions as
the raster original. Once ProdNameShort has vectorized a line segment, you
can verify its geometry (including angle and length), switch the start point
and endpoint, and trim or extend the line.
Settings on the VTools General tab of the Raster Design Options dialog box
specify whether the Line tool removes the underlying raster when you exit
the command, forces the vector lines to conform to current drafting settings,
or assigns layers to the vectors based on the width of the underlying raster
lines.
specify whether the Line tool removes the underlying raster when you exit
the command, forces the vector lines to conform to current drafting settings,
or assigns layers to the vectors based on the width of the underlying raster
lines.
If Dynamic Input is active, prompts appear near the cursor during
vectorization; otherwise, the prompts appear only on the command line.
vectorization; otherwise, the prompts appear only on the command line.
When you use the Line or Polyline tool, you can select the raster line for
vectorizing using one of the following two selection methods.
vectorizing using one of the following two selection methods.
One Pick
This default method vectorizes a bitonal raster line with a single click. The
one-pick method is especially useful when you want to quickly vectorize many
separate lines, which can include polylines, circles, and arcs. The endpoint
nearest the point you select is considered the start point (an arrow glyph
points away from the start-point). Depending on which AutoCAD drafting
one-pick method is especially useful when you want to quickly vectorize many
separate lines, which can include polylines, circles, and arcs. The endpoint
nearest the point you select is considered the start point (an arrow glyph
points away from the start-point). Depending on which AutoCAD drafting
206 | Chapter 8 Converting Raster Entities to Vector