Illustrator – Move anchor points while preserving angle

I want to move an anchor point along its current path – I mean moving anchor points keeping their current angle. Look at this picture:

diagram showing anchor point moving along its tangent direction

According to above picture, let’s say we want to move anchor point 1, but as you can see there is no option (or I cant find the option) to do this while preserving the angle – with the shift key, the anchor point snaps to 45° angles…

Answer

Illustrator does not have a easy shortcut to do this. However, you can do this with the scale tool. While this sounds as a weird thing, why it works becomes apparent once you realize we move the pivot point to previous control point. Here is what you do:

  1. (Make sure smart guides is on)
  2. Select the point you want to move.
  3. Activate scale tool (S)
  4. Move the anchor point to the position of prevous point
  5. Drag aloing the direction, a indication uniform should be present and snap while you are dragging in right driection.

Attribution
Source : Link , Question Author : Omid , Answer Author : joojaa

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