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4.1.1 Draw a Polyline
A polyline is a chain of lines and arcs that are joined together into one object. It
includes line and tangent arc. Tangent arc corresponds to the arc.
To draw a polyline, do the following:
1. Select the polyline drawing tool.
2. Left click to specify two points to draw a line.
3. Optional: To switch to drawing arc mode, right click and select Tangent Arc.
The arc is tangent to the last line/arc.
If you need to switch to drawing line mode, right click and select Line.
4. Left click to specify the next point.
5. Right click and select one of the following:
– Confirm: confirm the current point is the end point. The polyline is an
unclosed object.
– Cancel: cancel the previous operations and exit drawing a polyline.
– Close: connect the current point to the start point. The polyline is a
closed object.
If you need to change an unclosed polyline into a closed one, select it and check
Close in toolbar. This operation is irreversible.
4.1.2 Draw a Circle
To draw a circle, do the following:
1. Select the circle drawing tool.
2. Left click to specify the center point.
3. Left click to specify a point.
The distance between this point and the center point is the radius.
4.1.3 Draw an Arc
To draw an arc, do the following:
1. Select the arc drawing tool.
2. Left click to specify the center point.
3. Left click to specify the start point.
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