Talk:UV mapping

message: This needed an article --Shell 02:56, 19 December 2005 (UTC)
thread_title: Untitled

message: Assuming UV mapping works the same way across most implementations, why not treat it as a kind of mathematical article and explain HOW it works, not just WHAT it is?  --67.183.186.73 00:13, 23 August 2006 (UTC)
thread_title:  Article needs expansion 

message: In XYZ, I know which coordinate means what in space.  But what directions do U & V have? --24.249.108.133 17:58, 13 November 2006 (UTC)
replies: text: UV are the coordinates in 2D (so the image you're wrapping around the 3D object) - you could see them as X and Y in 2D. - Simeon87 12:50, 15 November 2006 (UTC)
replies: text: Yeah, also I believe X is red, Y is green, and Z is blue. KenFehling 05:12, 24 July 2007 (UTC)
replies: text: "U" is "up-ness", and "V" is "velocity", that's what I've been able to gather from the article. So, on the surface of a 3d object, X Y and Z aren't really relevant because those 3 coordinates describe points in the whole 3d space - not limited to the 2d surface. It's like, sure, that surface exists in 3d space, the space of the surface itself is still more like 2d than it is like 3d. I guess it will just not be Euclidean. OK, so, "up-ness" tell you a point's distance in a direction arbitrarily defined in the 2d space, you know, you have to start with that, and once you defined the direction, and you have the distance in terms of "upness", then "velocity" becomes the other coordinate because this is (literally)  a vector - (metaphorically) it means that it provides a complete coordinate space on the 2d surface. OK, at least, that's what I've been abe to figure out from the article. Understand? OK good I hope it helps. RGB is actually not related in any way, KenFehrling, but that was a good metap0hor too. Colorspace coordinate is almost as confusing in describing a particular color as UV coordinate is in describing the concept of surface-mapping. Cool? I didn't get it all myself until I read it OUT LOUD. It helps. --76.247.105.43 (talk) 03:07, 22 March 2009 (UTC)
thread_title:  So which is which? 

message: The horrid image shows a triangle and a sphere that look no different than planar and spherical mapping.  This needs a new image.
:My thoughts exactly.  --24.249.108.133 23:18, 28 February 2007 (UTC)
replies: text: I created an image of UV mapping on a sphere, but it's still just spherical mapping. Some kind of mesh perhaps? —Josh Lee 20:37, 17 June 2007 (UTC)
thread_title:  Poor image example 

message: u = \sin\theta\cos\phi = \frac{x}{\sqrt{x^2+y^2+z^2}} 
What are theta and phi? --JWSchmidt 21:53, 9 July 2007 (UTC)
thread_title:  terms not defined 

message: The example UV mapping given is a rather poor one, as it is just a projection of the sphere surface onto the x-y plane.  This means that the top and bottom hemispheres will have the same UV coordinates.
It would be much better to show an example UV mapping based on spherical polar coodinates (e.g. a latitude-longitude UV mapping).  121.73.55.195 (talk) 04:15, 5 June 2008 (UTC)
thread_title:  Poor example UV mapping 

message: Would this image be valuable addition to this UV-Mapping page? At least this image relates more to the concepts of UV-mapping than the other pictures do so far. 
Tschmits (talk) 09:49, 16 August 2008 (UTC)
thread_title:  Proposal new image 

message: Please correct me if I'm mistaken, but I don't think the 2d image represents the surface of the 3d sphere. In a sphere, all meridians will meet in the poles, right? Thus when folded in 3d, this image does not form a ball, but a cylinder. I think that when carved correctly, the 2d should resemble an orange peel - a series of lenslike shapes that add up to a sphere in 3d space. 
Cheers, Feirefis (talk) 22:52, 24 January 2010 (UTC)
thread_title:  Image correct? 

message: See: http://en.wikibooks.org/wiki/Talk:Blender_3D:_Noob_to_Pro/UV_Map_Basics#UV
I believe that U often stands for X (column) and V for Y (row). Is this standard?  — Preceding unsigned comment added by ThinkerFeeler (talk • contribs) 19:58, 23 December 2021 (UTC)
thread_title: what uv stands for

message: Is the sphere formula necessary?  If so, why not include other formulas?  — Preceding unsigned comment added by 96.247.50.18 (talk) 19:16, 27 March 2012 (UTC)
thread_title: Sphere UV formula seems out of place