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by londoh
2011-01-09T01:22:56-07:00
Forum: Users
Topic: -draw circle creates offset circle?
Replies: 6
Views: 13406

Re: -draw circle creates offset circle?

Hi Anthony

thanks for the extra info and links
I still cant get it right and time is against me, but hopefully its close enough that no-one will notice in this setting.

thanks for your help.

l.
by londoh
2011-01-06T11:30:55-07:00
Forum: Users
Topic: -draw circle creates offset circle?
Replies: 6
Views: 13406

Re: -draw circle creates offset circle?

Hi Anthony

thanks for the replies and link to the Image Coordinates vs Pixel Coordinates stuff. I hadnt found it yesterday and it clears up some of my incorrect assumptions.

Thank also for the heads up about the other gotchas - I hit the issues with adjacent polygons today!

I havent used IM for ...
by londoh
2011-01-05T12:10:51-07:00
Forum: Users
Topic: -draw circle creates offset circle?
Replies: 6
Views: 13406

Re: -draw circle creates offset circle?

well ahumm, I just found this thread:
http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=13345&p=45256

For Expert Usage The circle radius is a floating point operation, so you can draw a circle that is say half a pixel smaller that another circle. You may be able to use that to ...
by londoh
2011-01-05T10:19:00-07:00
Forum: Users
Topic: -draw circle creates offset circle?
Replies: 6
Views: 13406

-draw circle creates offset circle?

Hi

very new to im, and so maybe I'm being dumb or pedantic or both...

very basic simple exercise: I want to draw a circle in the centre of an image.
I've seen the examples here:
http://imagemagick.org/Usage/draw/#circles

great, wonderful, looks easy.
Then I realised the method isnt exactly what I ...

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