[magick-users] circle

[Fred Weinhaus]

Your center is misplace. it should be 31.5, 31.5 not 32,32




>Thanks for the reply Pete,
>
>That got me a bit closer, but... try it with a stroke width of 7 and a 
>-size of 2rx2r.. and you'll see the problem :)
>I want the final image size to perfectly fit the outer edge of the 
>stroke
>
>I can come close using your formula slightly modified. The problem is 
>that the strokewidth causes the resulting circle to be bigger than 
>than the radius specifed. It seems to me that the stroke is centered 
>on the circumference, so that if it is 8 pixel stroke, 4 will be 
>inside the specified radius and 4 outside (not sure what happens for 
>odd stroke widths!). Which means that the image size and x,y needs to 
>be adjusted by half the stroke width.
>
>...so here's an example with strokewidth 8 and radius 30.
>
>convert -size 64x64 xc:skyblue -fill white -stroke black -strokewidth 
>8 -draw "circle 32,32,60,32" /tmp/test.gif
>
>... which comes pretty close, but the bottom and right edges of the 
>image are missing a pixel of width.. so the resulting image looks 
>truncated.
>
>
>How can I correct for this?
>