Draw circle selection based on 3 user mouse points.

[Bill Rothman]

Hi,
First time for me.
I would like  to know if someone has already a macro or plugin to allow
me  to draw a  selection cirlce on image based on 3 points entered by
mouse. I could write the macro, but wonder if already done.
Thanks,
Bill R.

[Gabriel Landini]

On Monday 02 November 2009 22:03:25 Rothman, William wrote:
> I would like  to know if someone has already a macro or plugin to allow
> me  to draw a  selection cirlce on image based on 3 points entered by
> mouse. I could write the macro, but wonder if already done.

Have a look here:

http://www.dentistry.bham.ac.uk/landinig/software/software.html

ThreePointCircularROI (java & class files) This plugin creates a circular ROI
based on 3 user selected points on an image. The log window reports the
coordinates of the centre of the circle and its radius. Co-linear points (that
define an impossible circle) return a radius of -1.

G.