circle on an iso wall
Printed From: Pixel Joint
Category: The Lounge
Forum Name: Resources and Support
Forum Discription: Help your fellow pixel artists out with links to good tutorials, other forums, software, fonts, etc. Bugs and support issues should go here as well.
URL: https://pixeljoint.com/forum/forum_posts.asp?TID=8622
Printed Date: 13 September 2025 at 7:10pm
Topic: circle on an iso wall
Posted By: minipuck
Subject: circle on an iso wall
Date Posted: 25 June 2009 at 5:52am
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Any tips on how to properly draw a circle on an iso wall? l need to know this because im going to draw a round window on my pixel house. So say if this  is my wall, how do i properly draw a circle on it? ------------- http://dragcave.net/viewdragon/G3eW"> 
please click it, otherwise it will die, and it seems special. |
Replies:
Posted By: greenraven
Date Posted: 25 June 2009 at 6:13am
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Originally posted by Jeremy May as well put this here too:  Tutorials. It's why we have'em.  -------------  "pwnage comes with patience, practice and planning." ~ Jalonso 
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Posted By: minipuck
Date Posted: 26 June 2009 at 4:14am
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i know that tuorial, but that is for on a floor.
------------- http://dragcave.net/viewdragon/G3eW">
please click it, otherwise it will die, and it seems special. |
Posted By: Hapiel
Date Posted: 26 June 2009 at 4:24am
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Urgh, green thats irellevant indeed. I got a few things, this article by Pixel_Outlaw Math http://www.lolsoft.com/stuff/isocircle.pdf How to draw http://www.ider.herts.ac.uk/school/courseware/graphics/drawing_circles_in_isometric.html Or you could do it by feeling and guidelines: http://www.technologystudent.com/designpro/isomet2.htm ------------- |
Posted By: greenraven
Date Posted: 26 June 2009 at 5:25am
HOW is that irrelevant?  A floor is just a wall facing a different direction. It's still a circle in iso. Same principals. ------------- "pwnage comes with patience, practice and planning." ~ Jalonso
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Posted By: Hapiel
Date Posted: 26 June 2009 at 7:06am
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With computers we can not rotate those circles as we would on paper. Please draw me an isometric circle on a wall using the instructions of Jeremy Also, because in digital isometricity the angles of the lines are 26.6 degrees instead of 30 degrees, a circle drawn on top of something would not only have to be rotated, but also skewed. For more details read also P_O's mathy document ------------- |
Posted By: jeremy
Date Posted: 29 June 2009 at 2:56am
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The same principles do indeed apply :)
However the wall needs to be square (as it is in this case). It's also not quite as clean as the topdown one in pixel, though they both need some cleaning.
 or,
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Posted By: minipuck
Date Posted: 29 June 2009 at 6:26am
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thanks guys this helped out loads!!
------------- http://dragcave.net/viewdragon/G3eW">
please click it, otherwise it will die, and it seems special. |
Posted By: Hapiel
Date Posted: 29 June 2009 at 8:43am
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Originally posted by Jeremy The same principles do indeed apply :) However the wall needs to be square (as it is in this case). It's also not quite as clean as the topdown one in pixel, though they both need some cleaning.
The circles in the box do not look round to me, but you seem to be right. On the right is my version, a circle that is perfect by calculation. At the bottom, yours in red and mine in black on top of it. You can see yours is slightly wider diagonally, but thats about it. The manual correction could have caused that, and can cause that too on mine (which has not manually been cleaned up as you can see ;) )  ------------- |
Posted By: jalonso
Date Posted: 29 June 2009 at 10:17am
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You guys are missing the key ingredient, 80% width. 100% > +- 26.5 degrees + 80% width > iso circles that are vertical. For flat circle just 50% height. ------------- |
Posted By: Hapiel
Date Posted: 29 June 2009 at 2:44pm
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How could a circle that fits perfectly in a perfect square be too wide?
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Posted By: jeremy
Date Posted: 29 June 2009 at 4:17pm
| Yeah, it was sorta manually overcleaned. The whole thing was a bit rushed. I think that this technique would work better on a larger circle, but on the smaller topdown ones you can just eyeball it most of the time :P |
Posted By: Little Rocky
Date Posted: 04 July 2009 at 1:17am
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My head hurts. ITS A CIRCLE!!! DOES IT HAVE TO BE PERFECT?!?!?!?! Just having my 2 cents worth. Thankyou. |
Posted By: ellie-is
Date Posted: 04 July 2009 at 8:55am
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Well, actually, it has to be perfect.
My 2 cents now. :P |
Posted By: PlayerZ
Date Posted: 26 August 2012 at 3:30pm
| this is brilliant! i've been looking for this! |