Talk:Multiview orthographic projection

Mnemonics

How does an "actor on a stage" help one remember how First angle projection works? (If I understand First angle projection, it is the "shadow" you get after illuminating the object from infinity) Equally how does a "shark in a tank" help one remember third angle projection? (If I understand third angle projection, the object is in a glass box and you draw on the box what you see through that window) -- SGBailey (talk) 09:12, 4 March 2014 (UTC)

Push opbject on table so it tips, in the direction of pushing, produces first angle projection. Tipping it over 3 times produces third angle 130.233.72.161 (talk) 15:01, 14 November 2020 (UTC)

Where?

I don't understand exactly where the "Third Angle" system is used in the world. There isn't a map or a table. Does anyone know this thing? Thanks. --193.204.41.211 (talk) 14:33, 12 March 2014 (UTC)

In particular, is this system used in China? --193.204.41.212 (talk) 14:40, 12 March 2014 (UTC)

Third angle is, a sort of British commonwealth holdover. It is predominately used in USA, Canada, Japan and Australia. Japan mainly because of heavy influence from US. Rest of the world uses First angle. One possible source is https://www.technia.com/blog/3rd-angle-projection/

Rest of the world use first angle. ISO standard.130.233.72.161 (talk) 15:01, 14 November 2020 (UTC)

Eh?

[Elevation] is the corollary to the concept of a "view" (which is always overhead and is therefore referred to as an overhead view). Sorry, I couldn't get any meaning out of that - could somebody offer clarification? Thanks, --catslash (talk) 23:04, 19 May 2016 (UTC)

I removed the sentence as it was confusing and did nothing to explain the concept of an elevation. An overhead view is called a plan view, not just a view. --Mark viking (talk) 23:46, 19 May 2016 (UTC)

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Get a grip, people!

< In this type of projection, the object is imagined to be in the first quadrant. >

A statement that is not even slightly helpful if, as in this case, 'quadrant' and 'first quadrant' have not aleady been explained!!!! (and no, I don't know what they mean in this context, so can't fill in: soz)

86.130.154.70 (talk) 15:36, 23 October 2020 (UTC)

Agreed, it might be easier if one explains that: If you were to tip the object over on a table so it rotates 90 degrees. Then looking from above you get first angle and if you tip it over 3 times you get third angle. 130.233.72.161 (talk) 15:02, 14 November 2020 (UTC)