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Diffstat (limited to 'nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/pwlcurve.gl')
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diff --git a/nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/pwlcurve.gl b/nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/pwlcurve.gl new file mode 100644 index 000000000..52f391d54 --- /dev/null +++ b/nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/pwlcurve.gl @@ -0,0 +1,78 @@ +_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(PwlCurve, describe a piecewise linear NURBS trimming curve) +_names(PwlCurve) +.EQ +delim $$ +.EN +.SH PARAMETERS +_phead(_param1) +Specifies the NURBS object (created with _cmnd(NewNurbsRenderer)). +_phead(_param2) +Specifies the number of points on the curve. +_phead(_param3) +Specifies an array containing the curve points. +_phead(_param4) +Specifies the offset (a number of single-precision floating-point values) +between points on the curve. +_phead(_param5) +Specifies the type of curve. +Must be either _gluconst(MAP1_TRIM_2) or _gluconst(MAP1_TRIM_3). +.SH DESCRIPTION +_cmnd describes a piecewise linear trimming curve for a NURBS surface. +A piecewise linear curve consists of a list of +coordinates of points in the parameter space for the +NURBS surface to be trimmed. These points are connected +with line segments to form a curve. If the curve is +an approximation to a curve that is not piecewise linear, +the points should be close enough in parameter space that the +resulting path appears curved at the resolution used in the application. +.P +If _param5 is +_gluconst(MAP1_TRIM_2), then it describes a curve in two-dimensional (\f2u\fP +and \f2v\fP) parameter space. If it is _gluconst(MAP1_TRIM_3), then it +describes a curve in two-dimensional homogeneous (\f2u\fP, \f2v\fP, +and \f2w\fP) parameter space. +See the _cmnd(BeginTrim) reference page for more information +about trimming curves. +.SH NOTES +To describe a trim curve that closely follows the contours of a NURBS +surface, call _cmnd(NurbsCurve). +.SH SEE ALSO +_cmnd(BeginCurve), _cmnd(BeginTrim), _cmnd(NewNurbsRenderer), _cmnd(NurbsCurve) + |