Shape Tool and Points

[steve.ledger]

Yes, video works fine here Egg.

Note: Fred & I's method works fine here and produces a 100% perfect circle.
But remember to use 'Radius' or 'Diameter' creation. NOT bounds.

[Egg Bramhill]

This is the point I noted out of pure interest Steve, it doesn't create a perfect circle. Create a circle with the ellipse tool. size it to 300x300px. Create the circle via your quick shape tool method. set it to 300 x 300px. Select both and align together centrally. Zoom into top left side in wireframe, there is a gap. Not at the top, bottom, left or right sides but at the intermeadiate points nw, ne, se & sw.

So it creates a circle that for all intended use is a near enough circle, but not the perfect circle

[steve.ledger]

OK yes, tiny little humps..
But try 10 side.
I get absolutely perfect circle

[Egg Bramhill]

Yes, the more sides you use the less the bezier error is noticible. Do it with less, a square and notice the results.

Interestingly enough, Bezier curves can approximate a circle but not perfectly fit a circle.

FROM http://stackoverflow.com/questions/1...%A9zier-curves

The only real world application I see this mattering in, but not a great deal is if you have contraint set to 45 degrees, holding down Ctrl, draw a line horizontal, at 45 degree restraint and then vertical. Change the 45 degree line to a curve with smooth join. This doesn't give a true circular corner. The rounded corner feature on a rectangle gives a far more accurate circular corners.