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Diffstat (limited to 'nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/internals/knotvector.h')
| -rw-r--r-- | nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/internals/knotvector.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/internals/knotvector.h b/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/internals/knotvector.h new file mode 100644 index 000000000..3f0156185 --- /dev/null +++ b/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/internals/knotvector.h @@ -0,0 +1,68 @@ +/* +** License Applicability. Except to the extent portions of this file are +** made subject to an alternative license as permitted in the SGI Free +** Software License B, Version 1.1 (the "License"), the contents of this +** file are subject only to the provisions of the License. You may not use +** this file except in compliance with the License. You may obtain a copy +** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600 +** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at: +** +** http://oss.sgi.com/projects/FreeB +** +** Note that, as provided in the License, the Software is distributed on an +** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS +** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND +** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A +** PARTICULAR PURPOSE, AND NON-INFRINGEMENT. +** +** Original Code. The Original Code is: OpenGL Sample Implementation, +** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, +** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. +** Copyright in any portions created by third parties is as indicated +** elsewhere herein. All Rights Reserved. +** +** Additional Notice Provisions: The application programming interfaces +** established by SGI in conjunction with the Original Code are The +** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released +** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version +** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X +** Window System(R) (Version 1.3), released October 19, 1998. This software +** was created using the OpenGL(R) version 1.2.1 Sample Implementation +** published by SGI, but has not been independently verified as being +** compliant with the OpenGL(R) version 1.2.1 Specification. +*/ + +/* + * knotvector.h + * + * $Date: 2004/03/14 08:29:10 $ $Revision: 1.1.1.4 $ + * $Header: /cvs/xorg/xc/extras/ogl-sample/main/gfx/lib/glu/libnurbs/internals/knotvector.h,v 1.1.1.4 2004/03/14 08:29:10 eich Exp $ + */ + +#ifndef __gluknotvector_h_ +#define __gluknotvector_h_ + +#include "types.h" + +struct Knotvector { /* a knot vector */ + Knotvector( void ); + ~Knotvector( void ); + void init( long, long, long, INREAL * ); + int validate( void ); + void show( char * ); + + long order; /* order of spline */ + long knotcount; /* number of knots */ + long stride; /* bytes between points */ + Knot * knotlist; /* global knot vector */ +}; + +/* tolerance to test knot coincidence */ +#define TOLERANCE 1.0e-5 + +inline int +identical( Knot x, Knot y ) +{ + return ((x-y) < TOLERANCE) ? 1 : 0; +} +#endif /* __gluknotvector_h_ */ |