Pixel Joint Forum: circle on an iso wall

Message

   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?

Author	Message
minipuck Commander Joined: 23 August 2008 Online Status: Offline Posts: 185	Topic: circle on an iso wall Posted: 25 June 2009 at 5:52am
	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?
	please click it, otherwise it will die, and it seems special.
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greenraven Commander Joined: 08 September 2016 Online Status: Offline Posts: 2598	Posted: 25 June 2009 at 6:13am
	*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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minipuck Commander Joined: 23 August 2008 Online Status: Offline Posts: 185	Posted: 26 June 2009 at 4:14am
	i know that tuorial, but that is for on a floor.
	please click it, otherwise it will die, and it seems special.
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Hapiel Rear Admiral Joined: 30 June 2023 Online Status: Offline Posts: 3266	Posted: 26 June 2009 at 4:24am
	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
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greenraven Commander Joined: 08 September 2016 Online Status: Offline Posts: 2598	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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Hapiel Rear Admiral Joined: 30 June 2023 Online Status: Offline Posts: 3266	Posted: 26 June 2009 at 7:06am
	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 Edited by Lollige - 26 June 2009 at 7:09am
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jeremy Rear Admiral Joined: 25 November 2024 Location: New Zealand Online Status: Offline Posts: 1704	Posted: 29 June 2009 at 2:56am
	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, Edited by Jeremy - 29 June 2009 at 3:07am
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minipuck Commander Joined: 23 August 2008 Online Status: Offline Posts: 185	Posted: 29 June 2009 at 6:26am
	thanks guys this helped out loads!!
	please click it, otherwise it will die, and it seems special.
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Hapiel Rear Admiral Joined: 30 June 2023 Online Status: Offline Posts: 3266	Posted: 29 June 2009 at 8:43am
	*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 ;) )
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jalonso Admiral Joined: 29 November 2022 Online Status: Offline Posts: 13537	Posted: 29 June 2009 at 10:17am
	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. Edited by jalonso - 29 June 2009 at 10:17am
	PJs FAQ <•> Sticky Reads
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Hapiel Rear Admiral Joined: 30 June 2023 Online Status: Offline Posts: 3266	Posted: 29 June 2009 at 2:44pm
	How could a circle that fits perfectly in a perfect square be too wide?
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jeremy Rear Admiral Joined: 25 November 2024 Location: New Zealand Online Status: Offline Posts: 1704	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
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Little Rocky Seaman Joined: 03 July 2009 Online Status: Offline Posts: 2	Posted: 04 July 2009 at 1:17am
	My head hurts. ITS A CIRCLE!!! DOES IT HAVE TO BE PERFECT?!?!?!?! Just having my 2 cents worth. Thankyou.
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ellie-is Commander Joined: 12 September 2021 Online Status: Offline Posts: 706	Posted: 04 July 2009 at 8:55am
	Well, actually, it has to be perfect. My 2 cents now. :P
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PlayerZ Seaman Joined: 26 August 2012 Online Status: Offline Posts: 22	Posted: 26 August 2012 at 3:30pm
	this is brilliant! i've been looking for this!
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