Round edges with imagefillpolygon

[daradaniyal]

I need to create round edges of whatever shape i make with the imagefilledpolygon function. I know it will be an algorithm involving trigonometric function. So if anyone could help I'll appreciate it.

Daniyal

[Christopher]

For round it would be the equation for a circle. If the corners where always the same then maybe just setting pixels in a know pattern would be easier.