We are working on projects that are basically all open paths. However, we run into the following situation a lot:

enter image description here

If we change the shape of one curve, all other paths that had "intersected" are now off. Is there someway to keep an anchor point "snapped" to a curve? (Similar to connectors in OmniGraffle, etc.)

Or is there an easy way to detect where these have occurred in the document? "Join" doesn't work because they are not two anchor points.


1 Answer 1


Prevent, detect, connect, or align -- Nope

Trim -- Yes.

  • Extend the paths beyond the curve.
  • Select the paths and the curve
  • Grab the Shape Builder Tool
  • Hold down the Option/Alt key
  • Drag across the extended paths.

enter image description here

There's no way to prevent or detect misalignment on a curve that I'm aware of. And there's absolutely no way to "connect" a path to the middle of another path.

  • Thanks, @Scott. That is a very useful tool. However, I think we will still run into the same problem. In order to extend the paths beyond the curve, when you drag the anchor points isn't there still the risk of changing these curve shapes and throwing off intersections elsewhere? (That is, sometimes the points don't already extend past the curve like the one on the left of my example image.) Commented Jan 26, 2015 at 17:56
  • Yes. I don't know of any shortcut to quality work. You just have to be mindful of what you are doing.
    – Scott
    Commented Jan 26, 2015 at 17:57
  • Your method works great for paths that already extend further than they should. For paths that are too short, I started adding an additional anchor point on the curve I was going to extend. That way when I modify the path, it doesn't alter the shape of that path elsewhere. Commented Jan 26, 2015 at 18:00
  • @robertwbradford There exists tools that can automatically extend curves for ilustrator as plugins
    – joojaa
    Commented Jan 27, 2015 at 13:07

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