diff options
Diffstat (limited to 'src/glu/sgi/libnurbs/internals/curvesub.cc')
| -rw-r--r-- | src/glu/sgi/libnurbs/internals/curvesub.cc | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/src/glu/sgi/libnurbs/internals/curvesub.cc b/src/glu/sgi/libnurbs/internals/curvesub.cc deleted file mode 100644 index 91f2ca8ce8e..00000000000 --- a/src/glu/sgi/libnurbs/internals/curvesub.cc +++ /dev/null @@ -1,102 +0,0 @@ -/* -** 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. -*/ - -/* - * curvesub.c++ - * - */ - -#include "glimports.h" -#include "myassert.h" -#include "mystdio.h" -#include "subdivider.h" -#include "renderhints.h" -#include "backend.h" -#include "quilt.h" -#include "curvelist.h" -#include "nurbsconsts.h" - -/*-------------------------------------------------------------------------- - * drawCurves - main curve rendering entry point - *-------------------------------------------------------------------------- - */ - -void -Subdivider::drawCurves( void ) -{ - REAL from[1], to[1]; - Flist bpts; - qlist->getRange( from, to, bpts ); - - renderhints.init( ); - - backend.bgncurv(); - for( int i=bpts.start; i<bpts.end-1; i++ ) { - REAL pta, ptb; - pta = bpts.pts[i]; - ptb = bpts.pts[i+1]; - - qlist->downloadAll( &pta, &ptb, backend ); - - Curvelist curvelist( qlist, pta, ptb ); - samplingSplit( curvelist, renderhints.maxsubdivisions ); - } - backend.endcurv(); -} - - -/*-------------------------------------------------------------------------- - * samplingSplit - recursively subdivide patch, cull check each subpatch - *-------------------------------------------------------------------------- - */ - -void -Subdivider::samplingSplit( Curvelist& curvelist, int subdivisions ) -{ - if( curvelist.cullCheck() == CULL_TRIVIAL_REJECT ) return; - - curvelist.getstepsize(); - - if( curvelist.needsSamplingSubdivision() && (subdivisions > 0) ) { - REAL mid = ( curvelist.range[0] + curvelist.range[1] ) * 0.5; - Curvelist lowerlist( curvelist, mid ); - samplingSplit( lowerlist, subdivisions-1 ); // lower - samplingSplit( curvelist, subdivisions-1 ); // upper - } else { - long nu = 1 + ((long) (curvelist.range[2] / curvelist.stepsize)); - backend.curvgrid( curvelist.range[0], curvelist.range[1], nu ); - backend.curvmesh( 0, nu ); - } -} - |