texturing onto sphere using sphere library

Article View: comp.sys.sgi.graphics

Article #160

Back to comp.sys.sgi.graphics Previous Next

#160

From: William Sherman
Date: Wed, 27 Jan 1993 22:06

23 lines
1554 bytes

I'm trying to map a texture onto a sphere.   Such that the top and
bottom converge at the "poles" of the sphere, and such that the
texture wraps around and connects at a "meridian."

I'm using the libsphere library to generate the sphere polygons, so
I don't have much (any) control over setting the texture values at
the vertices.  I am using the texgen command, but I cannot find
an appropriate set of values to get it to work.  Though I can get
close, the best I do gives me part of the texture correct, but all
on one hemisphere, and mirrored on the other hemisphere.

	Thanks,
	Bill

/************************************************************************/
/* Bill Sherman   (wsherman@ncsa.uiuc.edu)				*/
/* National Center for Supercomputing Applications			*/
/* University of Illinois						*/
/* Champaign-Urbana							*/
/*									*/
/*   "You want to do mankind a real service?  Tell funnier jokes."	*/
/* 		Og							*/
/************************************************************************/

Technical Details

Message-ID: <C1J9E1.2L2@news.cso.uiuc.edu>

Path:

arc1-ca.pugleaf.net!sparky!uunet!ftpbox!news.acns.nwu.edu!zaphod.mps.ohio-state.edu!caen!uwm.edu!ux1.cso.uiuc.edu!news.cso.uiuc.edu!ncsa.uiuc.edu!wsherman

Show Full Headers

Complete Article Headers

Newsgroups: comp.sys.sgi.graphics
Path: arc1-ca.pugleaf.net!sparky!uunet!ftpbox!news.acns.nwu.edu!zaphod.mps.ohio-state.edu!caen!uwm.edu!ux1.cso.uiuc.edu!news.cso.uiuc.edu!ncsa.uiuc.edu!wsherman
From: wsherman@ncsa.uiuc.edu (William Sherman)
Subject: texturing onto sphere using sphere library
Message-ID: <C1J9E1.2L2@news.cso.uiuc.edu>
Sender: usenet@news.cso.uiuc.edu (Net Noise owner)
Organization: National Center for Supercomputing Applications
Date: Wed, 27 Jan 1993 22:06:00 GMT
Keywords: texture sphere libsphere
Lines: 23