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# simple shape question

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 simple shape question on Feb 1, 2018 at 6:34:11 pm

So I drew a rectangle and wanted to grab a corner point. I was under the impression that I could just grab the arrow tool hold down command (mac) and get the white arrow and then I can grab the corner point. This doesn't work. I googled it and I found that when creating the rectangle you need to hold down the option key. Ok so I make the rectangle holding down the option key but I still cant grab the corner point, I have to now grab the pen tool and select the corner point. If i just draw a shape none of this is a problem I can just grab the corner with the arrow tool.

This seems really convoluted is there a way of just converting a rectangle/circle to be editable instead of having to hold the option key down when I first draw the rectangle? How on earth would a beginner know to do this? what is the purpose of not letting a rectangle be editable right off the bat?

 Re: simple shape questionon Feb 2, 2018 at 10:57:15 am

[chad demoss] "what is the purpose of not letting a rectangle be editable right off the bat?"

A rectangle is a parametric shape. Rather than having a path that can be directly manipulated, it has a few editable properties that define the path indirectly: size, position, and roundness. You can adjust these parameters to adjust the rectangle shape -- without losing its "rectangleness." You can tell Ae "I want this to be a perfect rectangle that's 500px wide and 200px tall, with perfectly symmetrical rounded corners with a 20px radius" and you will get exactly that.

A Bezier path (made either by Alt/Opt at first, or by right-click and "Make Bezier path" after the fact) can be directly manipulated. You can push the points around anywhere you want. But because the "parameters" of a Bezier path are the positions of the points and their tangents, you'd be completely responsible for ensuring "rectangleness."

Why are parametric shapes the default? The math only works one way. You can easily say, "make the path that fits these rules," but you can't necessarily say "make the rules that fit this path."

Walter Soyka