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Draw curved segments by dragging the object
anchor points with Pen Tool. When you use the Selection tool to
select an object anchor point connecting curved segments, the segments
display direction lines, which end in direction points.
The angle and length of the direction lines determine the shape
and size of the curved segments. Moving the direction lines reshapes
the curves. A smooth point always has two direction
lines that move together as a single, straight unit. When you drag
the direction point of either direction line on a smooth point,
both direction lines move simultaneously, maintaining a continuous
curve at that object anchor point. In comparison, a corner
point can have two, one, or no direction lines, depending
on whether it joins two, one, or no curved segments, respectively.
Corner
point direction lines maintain the corner by working independently
of one another. When you drag a direction point on a corner point’s
direction line, the other direction line, if present, does not move.
Direction lines are always tangent to (perpendicular to the radius
of) the curve at the object anchor points. The angle of each direction
line determines the slope of the curve, and the length of each direction
line determines the height, or depth, of the curve.
- Select Pen Tool.
- Position the cursor where you want the curve to begin.
Hold down the mouse button.
- Drag to create direction lines that determine the slope
of the curve segment you’re creating. In general, extend the direction
line about one third of the distance to the next object anchor point
you plan to draw. Shift-drag to constrain the direction line to
multiples of 45 °.
- Release the mouse button.
Note: The first segment will not be visible until you create
the second object anchor point.
- Position Pen Tool where you want the curve segment to
end.
To create a C-shaped curve, drag in a direction
opposite to the direction that you dragged to create the previous
object anchor point.
 Drawing second point in curves - A.
- Starting to drag second smooth point
- B.
- Dragging
away from previous direction line, creating C-shaped curve
- C.
- Result
after releasing mouse button
To create an S-shaped curve, drag in the same direction
that you dragged to create the previous object anchor point.
 Drawing S curves - A.
- Starting to drag new smooth point
- B.
- Dragging
in same direction as previous direction line, creating S-shaped
curve
- C.
- Result after releasing
mouse button
- Continue dragging Pen Tool from different locations to
create additional points.
To close the path, position Pen Tool over
the first object anchor point. Click or drag to close the path.
To leave the path open, Ctrl-click anywhere away
from all objects or select the Selection tool.
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