It seems I'm geometry-challenged today -- I know this should be simple, but I'm stumped:
I can draw a line object from the loc of one object to the loc of another. But if I want to draw only in the space _between_ objects rather than intersect them, how do I get the points for the location where a line object would meet the edge of the other objects if drawn all the way to their centers, as indicated by the "X"s below:
----------------- | | | button1 | | \ | ----------X------ \ \ ------X---------- | \ | | button2 | | | -----------------
Hint: the diagram above with drawn with a tool I'm working on to make ASCII diagrams for email. If we solve this I'll finish it next week and put it in RevNet.
So, does your hint mean to say that the buttons in your diagram are always rectangles, or can they be polygons of arbitrary complexity? If only rectangles then I think it can be done fairly simply. To notate your diagram a bit differently:
----------------- | | | A | | |\ | ---------g-h----- | \ | \ --i----j--------- | | \ | | B----- C | | | -----------------
i.e there's a right angled triangle ABC. You know all the coordinates of A, B and C already, plus we know the rects of the buttons. Thus we know the vertical distance A-g, and we also know the vertical distance A-B: then the proportion between the horizontal distance g-h and the horizontal distance B-C is the same as the (known) proportion A-g to A-B, which means you can find the position of h (the top intersection point) as needed. A similar calculation relating to the the triangle Aij means that you can get at point j. I'm sorry I haven't done this as a script but it's very late here in London...
Something similar could be done for circles but it would involve more real trig.
HTH - and I hope I'm right!
Graham
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Graham Samuel / The Living Fossil Co. / UK & France
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