SGI SI GLU library

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diff --git a/src/glu/sgi/libnurbs/internals/bin.cc b/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++
+ *
+ * $Date: 2001/03/17 00:25:40 $ $Revision: 1.1 $
+ * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/internals/bin.cc,v 1.1 2001/03/17 00:25:40 brianp Exp $
+ */
+
+#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
+    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 );	
+	    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];
+#ifndef NDEBUG
+	   dprintf( "arc (%g,%g) (%g,%g)\n", s1, t1, s2, t2 );
+#endif
+	}
+    }
+}
+