constructing tangent in illustrator

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alexander fjelldal's picture
Joined: 14 Dec 2004 - 6:25am
constructing tangent in illustrator
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How do i construct a line that is that is the tangent of two different curves? i know there has been a discussion on ths already, but I'm looking for an easy method.

alexander fjelldal's picture
Joined: 14 Dec 2004 - 6:25am
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Here's the picture i tried to attach:

Nick Curtis's picture
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Joined: 21 Apr 2005 - 8:16am
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In CorelDraw, what I usually do in such instances is draw the straight line as a true vertical, then rotate it to as close an ideal position as possible, taking note of the angle of rotation. I then Undo the rotation, select the two ellipses, rotate them to the noted angle, rotate my line 90° to true horizontal, then Align Top for all three objects. The points of intersection are then true tangents. I perform any curve editing necessary, then rotate the group or new object the same number of degrees in the opposite direction.

maxgraphic's picture
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Joined: 5 Jun 2008 - 11:27pm
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My smug answer is: use FreeHand, which has tangent points. But if that's not an option, would the "Common Tangents" script work?

http://park12.wakwak.com/~shp/lc/et/en_aics_script.html

Briän M Zick's picture
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Joined: 8 Nov 2008 - 9:38pm
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Fontforge has tangent points also... Though that might not be what you're looking for.