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Building Objects using the Autoline Command |
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To build a chain of objects from segments and/or arcs, follow these steps.
1.Run the Autolinecommand 
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2.Set the type of the first created segment of the chain by clicking the required button in the Segment Type group on the Parameter Panel:
Segment,
Arc.
3.Build the first segment of the chain. To do this, set the start and end points of the segment, and when building an arc, also set a point on it.
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If the start (end) point is specified outside the segment phantom, then the position of the start (end) of the object is defined as the projection of the specified point on the phantom. |
The created segment can be located in a certain way relative to another object or objects — straight-line objects (segments, straight lines, axes) and curves (circles, ellipses, arcs).
To select the required objects, click Select Base Object button 
and specify them before setting the last point. The names of the selected objects will appear in the Object field.
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You can also select the required object by disabling the snaps which do not allow specifying the object, for example, the Point on Curve snap. |
When specifying objects, the method for designing a segment is determined by the system automatically depending on which objects are specified. For example, if a straight-line object is specified during the construction of a segment, the segment may be parallel or perpendicular to it. This is determined by the direction of the cursor movement. In cases when several options for constructing objects are possible, the option that is closest to the object’s indication point is automatically selected.
Methods for constructing the first segment of the chain are described in detail in sections Methods of Building the First Segment and Methods of Building the First Arc.
When constructing a chain segment, its phantom is displayed in the graphic area. It appears after specifying the first point of a segment or object which determines its position.
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During the construction of a chain segment, the Parameter Panel displays the parameter fields of the object: coordinates of the start and end points, length and angle (for a segment), radius or diameter (for an arc). These fields are used in the same way as when creating segments and arcs using special commands. For example, a segment can be constructed by specifying its start point, length and slope angle, and when building an arc, you can specify its radius/diameter instead of a point on the arc. |
4.After creating an object, the system expects the next object to be of the same type. If necessary, select a different type for the second segment of the chain.
5.The start point of the second segment is already set — this is the end point of the first segment. The remaining parameters — the object that determines the position of the segment, the end point, a point on the curve (when creating an arc) — are set similarly to the first segment.
When creating the second and all subsequent segments, the construction methods described in sections Methods of Building Subsequent Segments and Methods of Building Subsequent Arcs are available.
6.Similarly, create all the required segments of the chain.
7.If you want to start a new chain of objects, click Draw New button 
. Construction of the current chain will be completed. The next created object will be the first segment of the new chain.
8.After building all the required chains of objects, complete the command by clicking Finish 
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If necessary, you can use the Autoline command to create separate (i. e., not connected by vertices) segments and arcs. To do this, disable the Continuous Drawing of Objects option on the Parameter Panel. In this case, the end point of the previous segment is no longer used as the start point of the next segment, so it should be explicitly indicated. |
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Each object of the chain built using the Autolinecommand can have its own style. To select the required style, use the Style list. More details on choosing the object style... |
See Also
