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Diffstat (limited to 'nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/begincurve.gl')
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diff --git a/nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/begincurve.gl b/nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/begincurve.gl new file mode 100644 index 000000000..5ea082494 --- /dev/null +++ b/nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/begincurve.gl @@ -0,0 +1,79 @@ +_C_ License Applicability. Except to the extent portions of this file are +_C_ made subject to an alternative license as permitted in the SGI Free +_C_ Software License B, Version 1.1 (the "License"), the contents of this +_C_ file are subject only to the provisions of the License. You may not use +_C_ this file except in compliance with the License. You may obtain a copy +_C_ of the License at Silicon Graphics, Inc., attn: Legal Services, 1600 +_C_ Amphitheatre Parkway, Mountain View, CA 94043-1351, or at: +_C_ +_C_ http://oss.sgi.com/projects/FreeB +_C_ +_C_ Note that, as provided in the License, the Software is distributed on an +_C_ "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS +_C_ DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND +_C_ CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A +_C_ PARTICULAR PURPOSE, AND NON-INFRINGEMENT. +_C_ +_C_ Original Code. The Original Code is: OpenGL Sample Implementation, +_C_ Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, +_C_ Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. +_C_ Copyright in any portions created by third parties is as indicated +_C_ elsewhere herein. All Rights Reserved. +_C_ +_C_ Additional Notice Provisions: The application programming interfaces +_C_ established by SGI in conjunction with the Original Code are The +_C_ OpenGL(R) Graphics System: A Specification (Version 1.2.1), released +_C_ April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version +_C_ 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X +_C_ Window System(R) (Version 1.3), released October 19, 1998. This software +_C_ was created using the OpenGL(R) version 1.2.1 Sample Implementation +_C_ published by SGI, but has not been independently verified as being +_C_ compliant with the OpenGL(R) version 1.2.1 Specification. +_C_ +_C_ $Date: 2004/03/14 08:29:09 $ $Revision: 1.1.1.4 $ +_C_ The first character in this file must be an '_'! +_C_ Anything on a line after _C_ is ignored +_define(_filters,eqn)_C_ +_C_ eqn is automatically replaced with neqn for nroff +_header(BeginCurve, delimit a NURBS curve definition) +_names(BeginCurve) +_names(EndCurve,,noheader) +.EQ +delim $$ +.EN +.SH PARAMETERS +_phead(_param1) +Specifies the NURBS object (created with _cmnd(NewNurbsRenderer)). +.SH DESCRIPTION +Use _cmnd(BeginCurve) to mark the beginning of a NURBS +curve definition. +After +calling _cmnd(BeginCurve), make one or more calls to +_cmnd(NurbsCurve) to define the attributes of the curve. +Exactly one of the calls to _cmnd(NurbsCurve) must have +a curve type of _const(MAP1_VERTEX_3) or _const(MAP1_VERTEX_4). +To mark the end of the NURBS curve definition, call _cmnd(EndCurve). +.P +GL evaluators are used to render the NURBS curve as a series of line +segments. +Evaluator state is preserved during rendering +with _glcmnd(PushAttrib)(_const(EVAL_BIT)) and +_glcmnd(PopAttrib)(). +See the _glcmnd(PushAttrib) reference page for details on exactly what state +these calls preserve. +.SH EXAMPLE +The following commands render a textured NURBS curve with normals; +texture coordinates and normals are also specified as NURBS curves: +.sp +.Ex +gluBeginCurve(nobj); + gluNurbsCurve(nobj, ..., GL_MAP1_TEXTURE_COORD_2); + gluNurbsCurve(nobj, ..., GL_MAP1_NORMAL); + gluNurbsCurve(nobj, ..., GL_MAP1_VERTEX_4); +gluEndCurve(nobj); +.Ee +.SH SEE ALSO +_cmnd(BeginSurface), _cmnd(BeginTrim), _cmnd(NewNurbsRenderer), +_cmnd(NurbsCurve), +_glcmnd(PopAttrib), _glcmnd(PushAttrib) + |