Connector types fall into four groups:
• Standard connectors – the line segments run vertically and horizontally. All
angles are right angles. The connector does not bend around the objects it binds.
• Line connectors – consist of a line segment and two smaller horizontal or
vertical segments at the ends.
• Straight connectors – consist of a single line.
• Curved connectors – are based on Bézier curves, as described in Chapter 10
(Advanced Draw Techniques).
You can modify all the connector types from the context menu. Select Connector to
change from one connector type to another (as well as some other properties). With
the Line dialog you can change the appearance of the line (color, arrow style, and line
style) but not the connector type.
Drawing connectors—basics
When you choose a connector from the toolbar, the mouse pointer changes to .
As you move the cursor over an object, the available connection points (also referred
to as glue points) become visible. To connect two shapes, move the mouse cursor
over a glue point, click and hold down the left mouse button to establish the first
point, and then drag the mouse cursor (left button still pressed) to the other glue
point and release the mouse button. The ends of the line are now docked and the
connection is established (see Figure 207).
You can also attach the beginning or the end of a connector to the middle of an
object. This is useful when the final position of the object is not yet determined. When
you move the object, Draw automatically selects the optimal location for the
connector ends (see Figure 208).
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