Pen Tool – Curves

You create a curve by adding an anchor point where a curve changes direction, and dragging the direction lines that shape the curve. The length and slope of the direction lines determine the shape of the curve.

Curves are easier to edit and your system can display and print them faster if you draw them using as few anchor points as possible. Using too many points can also introduce unwanted bumps in a curve. Instead, draw widely spaced anchor points, and practice shaping curves by adjusting the length and angles of the direction lines.

• Select the Pen tool.

• Position the Pen tool where you want the curve to begin, and hold down the mouse button.

  The first anchor point appears, and the Pen tool pointer changes to an arrowhead. (In Photoshop, the pointer changes only after you’ve started dragging.)

• Drag to set the slope of the curve segment you’re creating, and then release the mouse button.

  In general, extend the direction line about one third of the distance to the next anchor point you plan to draw. (You can adjust one or both sides of the direction line later.)

  Hold down the Shift key to constrain the tool to multiples of 45°.

  

  Drawing the first point in a curve

  
  A. Positioning Pen tool B. Starting to drag (mouse button pressed) C. Dragging to extend direction lines 

• Position the Pen tool where you want the curve segment to end, and do one of the following:

  • To create a C‑shaped curve, drag in a direction opposite to the previous direction line. Then release the mouse button.

  

  Drawing the second point in a curve

  
  

  • To create an S‑shaped curve, drag in the same direction as the previous direction line. Then release the mouse button.

  

  Drawing an S curve

  
  

  Note:

  (Photoshop only) To change the direction of the curve sharply, release the mouse button, and then Alt-drag (Windows) or Option-drag (Mac OS) the direction point in the direction of the curve. Release the Alt (Windows) or Option (Mac OS) key and the mouse button, reposition the pointer where you want the segment to end, and drag in the opposite direction to complete the curve segment.

• Continue dragging the Pen tool from different locations to create a series of smooth curves. Note that you are placing anchor points at the beginning and end of each curve, not at the tip of the curve.

  Note:

  Alt-drag (Windows) or Option-drag (Mac OS) direction lines to break out the direction lines of an anchor point.

• Complete the path by doing one of the following:

  • To close the path, position the Pen tool over the first (hollow) anchor point. A small circle appears next to the Pen tool pointer  when it is positioned correctly. Click or drag to close the path.

    note: To close a path in InDesign, you can also select the object and choose Object > Paths > Close Path.

  • To leave the path open, Ctrl-click (Windows) or Command-click (Mac OS) anywhere away from all objects.

    To leave the path open, you can also select a different tool, or choose Select > Deselect in Illustrator or Edit >Deselect All in InDesign.