Talk:Orthographic projection
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Orthographic projection has been nominated for Selected article, at the Architecture Portal. For more information, visit WikiProject:Architecture |
User:W3bu53r Why third angle projection is considered more intuitive compared to first angle? Personally, I think 3rd angle projection is fine, and it makes more sense than first angle. I don't mean to start flame war between US vs. the rest of the world here. Someone enlighten me, please.
Ben Axelrod: I think the picture is very helpful in illustrating this concept. Did Wapcaplet delete the link accidentaly?
I bumped into an extremely good resource on the subject of orthographic projection, specifically axonometric projection. Someone ambitious might use this resource as a starting point for a great series of articles on 3D projection. This someone might be me! Of course, help would be more than welcome. -- Wapcaplet
See Graphical projection Pat 16:29, 22 Feb 2004 (UTC)
Coloration is great, Wapcaplet. I hope the other figures might also be similarly colored. But note there is now a size difference between the two pages and the figures no longer align vertically. If in coloring the the top page the size might be maintained (the larger the better for clarity) and also the size of the lower returned to its orginal, then we have the best of both worlds - color plus figures aligned vertally. Pat 15:18, 24 Feb 2004 (UTC)
Any way to punch up, Perspective Distortion, Source? Pat 18:35, 24 Feb 2004 (UTC)
- Yeah, I noticed the size problem after uploading. It has been fixed. The images were not really resized, though I did remove some whitespace from between the different illustrations to make the whole image smaller; reduced screen real estate and file size without compromising on detail. Converting to PNG format helped a bit too - if you have other images like this to upload in the future (diagram-like with few colors), PNG is probably the best image format to use; JPEG is likely to introduce visual artifacts and muddy-up the diagram, since it's designed more for photographic continuous-color images. Just a suggestion :-) I'll see if I can't do something with the perspective distortion illustrations too... -- Wapcaplet 21:16, 24 Feb 2004 (UTC)
- P.S. - in fact, if you could possibly use PNG versions of the images on Perspective Distortion, Source, that would be better (and easier to add color to) - as you can see, some of them suffer from blurriness and other problems caused by the JPEG compression. Assuming you have higher-quality originals of these images, I bet you will be much happier with the results that converting to PNG gives you. -- Wapcaplet 21:20, 24 Feb 2004 (UTC)
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- Suspect blurriness is from H-P scan. Think I must have done it as a 'document'. Will try again as a "text and graphics as image" h-p scan. Pat Kelso 17:17, Feb 25, 2004 (UTC)
- If I recall HP's scanning software correctly, I think "line drawing" or "black and white drawing" will probably give the best results. But definitely save them as PNG instead of JPEG, since I'm certain that is where some of the blurriness comes from :-) -- Wapcaplet 19:12, 25 Feb 2004 (UTC)
The sequence in which the two main topics are presented would seem reversed. Without objection will reverse the order in which they appear. Will leave this post up a few days for objections...... Pat Kelso 00:17, Mar 27, 2004 (UTC)
I added a disambiguation message to the top of the page and linked to Orthographic projection (geometry). This article is wonderfully written, but I think it needs to be better disambiguated. The material covered seems to be about drafting and engineering use of the term orthographic projection, but that is just one of the many meanings. From searching online, I found at least three different, but related, meanings:
- Map projections
- Drawings (which is posted here)
- Transformation Matrices (which I put at Orthographic projection (geometry))
Let me know what you all think. -- jaredwf 12:14, 12 May 2004 (UTC)
Mmm ... User:Pat Kelso has put a lot into pages all around descriptive geometry. This is good stuff; but needs perhaps top have some broader intro bits at the start. Charles Matthews 16:05, 12 May 2004 (UTC)
I added a stub for and disambiguated Orthographic projection (cartography). -- jaredwf 12:25, 13 May 2004 (UTC)
[edit] Page format problems?
When I view this page the format seems all wrong (blank space) and when I try to view one of the graphics (which show up as links - .png files) I am directed to an upload page? I have tried both Firefox and Explorer browsers with same results. Is this my ignorance with default setup (I'm new) or is there a page problem. The info is very helpful, I found the graphics elsewhere.
[edit] Standard Symbols
"NOTE: The images displayed are reversed. Third angle symbol has view into cone on left and side view of cone length on right; First angle symbol is side view of cone length on left and view into cone on right. You are encouraged to cross reference with other sources until this image is fixed."
A very confusing note. What it means is that the images are mirror-images of the correct standard symbols, not that the FR and US labels are swapped. They do indeed show first and third angle projections correctly. (The mirror image of a first or third angle projection is itself a first or third angle projection, respectively.)
See this BBC page for a correct example: [1]
In particular, I find "view into cone" confusing because it seems to imply that you're looking into a hollow object, something like a waste bin on its side. But the object is actually a solid, and you're looking onto its truncated end.
In any case, the images should be fixed and the note removed.
--84.9.78.13 15:56, 4 March 2007 (UTC)
