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authormarha <marha@users.sourceforge.net>2009-10-08 13:15:52 +0000
committermarha <marha@users.sourceforge.net>2009-10-08 13:15:52 +0000
commita0c4815433ccd57322f4f7703ca35e9ccfa59250 (patch)
treef5213802ec12adb86ec3136001c1c29fe5343700 /mesalib/src/glu/sgi/libnurbs/internals/bin.cc
parentc73dc01b6de45612b24dc2dd34fba24d81ebf46c (diff)
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Added MesaLib-7.6
Diffstat (limited to 'mesalib/src/glu/sgi/libnurbs/internals/bin.cc')
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diff --git a/mesalib/src/glu/sgi/libnurbs/internals/bin.cc b/mesalib/src/glu/sgi/libnurbs/internals/bin.cc
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+/*
+** 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.
+*/
+
+/*
+ * bin.c++
+ *
+ */
+
+#include "glimports.h"
+#include "mystdio.h"
+#include "myassert.h"
+#include "bin.h"
+
+/*----------------------------------------------------------------------------
+ * Constructor and destructor
+ *----------------------------------------------------------------------------
+ */
+Bin::Bin()
+{
+ head = NULL;
+}
+
+Bin::~Bin()
+{
+ assert( head == NULL);
+}
+
+/*----------------------------------------------------------------------------
+ * remove_this_arc - remove given Arc_ptr from bin
+ *----------------------------------------------------------------------------
+ */
+
+void
+Bin::remove_this_arc( Arc_ptr arc )
+{
+ Arc_ptr *j;
+ for( j = &(head); (*j != 0) && (*j != arc); j = &((*j)->link) );
+
+ if( *j != 0 ) {
+ if( *j == current )
+ current = (*j)->link;
+ *j = (*j)->link;
+ }
+}
+
+/*----------------------------------------------------------------------------
+ * numarcs - count number of arcs in bin
+ *----------------------------------------------------------------------------
+ */
+
+int
+Bin::numarcs()
+{
+ long count = 0;
+ for( Arc_ptr jarc = firstarc(); jarc; jarc = nextarc() )
+ count++;
+ return count;
+}
+
+/*----------------------------------------------------------------------------
+ * adopt - place an orphaned arcs into their new parents bin
+ *----------------------------------------------------------------------------
+ */
+
+void
+Bin::adopt()
+{
+ markall();
+
+ Arc_ptr orphan;
+ while( (orphan = removearc()) != NULL ) {
+ for( Arc_ptr parent = orphan->next; parent != orphan; parent = parent->next ) {
+ if (! parent->ismarked() ) {
+ orphan->link = parent->link;
+ parent->link = orphan;
+ orphan->clearmark();
+ break;
+ }
+ }
+ }
+}
+
+
+/*----------------------------------------------------------------------------
+ * show - print out descriptions of the arcs in the bin
+ *----------------------------------------------------------------------------
+ */
+
+void
+Bin::show( char *name )
+{
+#ifndef NDEBUG
+ _glu_dprintf( "%s\n", name );
+ for( Arc_ptr jarc = firstarc(); jarc; jarc = nextarc() )
+ jarc->show( );
+#endif
+}
+
+
+
+/*----------------------------------------------------------------------------
+ * markall - mark all arcs with an identifying tag
+ *----------------------------------------------------------------------------
+ */
+
+void
+Bin::markall()
+{
+ for( Arc_ptr jarc=firstarc(); jarc; jarc=nextarc() )
+ jarc->setmark();
+}
+
+/*----------------------------------------------------------------------------
+ * listBezier - print out all arcs that are untessellated border arcs
+ *----------------------------------------------------------------------------
+ */
+
+void
+Bin::listBezier( void )
+{
+ for( Arc_ptr jarc=firstarc(); jarc; jarc=nextarc() ) {
+ if( jarc->isbezier( ) ) {
+ assert( jarc->pwlArc->npts == 2 );
+#ifndef NDEBUG
+ TrimVertex *pts = jarc->pwlArc->pts;
+ REAL s1 = pts[0].param[0];
+ REAL t1 = pts[0].param[1];
+ REAL s2 = pts[1].param[0];
+ REAL t2 = pts[1].param[1];
+ _glu_dprintf( "arc (%g,%g) (%g,%g)\n", s1, t1, s2, t2 );
+#endif
+ }
+ }
+}
+