How to convert rectangular shape into circular shape ?

Imagine that you have a circle ,if you cut it from one radius then theoretically you can make that shape into a rectangular shape and vice versa
now this is present in photoshop like done here in this tutorial
http://www.scrappersguide.com/tips_ps/polar-to-rectangular-ps/
Is there anyway that this can be done by SolidWorks or even AutoCad ??

2 Answers

Using Solidworks, I think your best bet is just the circular pattern tool or the linear pattern tool. If you create your initial repeating design then you can pattern it in a straight line or circle.

In Autocad, if the design is a solid model, just filletedge, set your radius and selct the 4 edges. you now have a cylinder.
If object is 2-d, fillet with radius... same.
If it says (2d) fillet is too large, extend your lines and fillet, then delete remaining bits of lines.