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-rw-r--r--src/glu/sgi/libnurbs/internals/splitarcs.cc293
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diff --git a/src/glu/sgi/libnurbs/internals/splitarcs.cc b/src/glu/sgi/libnurbs/internals/splitarcs.cc
deleted file mode 100644
index 1f79d543fbc..00000000000
--- a/src/glu/sgi/libnurbs/internals/splitarcs.cc
+++ /dev/null
@@ -1,293 +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.
-*/
-
-/*
- * splitarcs.c++
- *
- */
-
-#include "glimports.h"
-#include "myassert.h"
-#include "mysetjmp.h"
-#include "mystdio.h"
-#include "subdivider.h"
-#include "arcsorter.h"
-#include "arc.h"
-#include "bin.h"
-
-/* local preprocessor definitions */
-#define MAXARCS 10
-
-/*----------------------------------------------------------------------------
- * Subdivider::split - split trim regions in source bin by line (param == value).
- *----------------------------------------------------------------------------
- */
-
-void
-Subdivider::split( Bin& bin, Bin& left, Bin& right, int param, REAL value )
-{
- Bin intersections, unknown;
-
- partition( bin, left, intersections, right, unknown, param, value );
-
- int count = intersections.numarcs();
- if( count % 2 ) {
-#ifndef NDEBUG
- left.show( "left" );
- intersections.show( "intersections" );
- right.show( "right" );
-#endif
- ::mylongjmp( jumpbuffer, 29 );
- }
-
- Arc_ptr arclist[MAXARCS], *list;
- if( count >= MAXARCS ) {
- list = new Arc_ptr[count];
- } else {
- list = arclist;
- }
-
- Arc_ptr jarc, *last, *lptr;
- for( last = list; (jarc=intersections.removearc()) != NULL; last++ )
- *last = jarc;
-
- if( param == 0 ) { /* sort into increasing t order */
- ArcSdirSorter sorter(*this);
- sorter.qsort( list, count );
-
- //::qsort ((void *)list, count, sizeof(Arc_ptr), (cmpfunc)compare_s);
- for( lptr=list; lptr<last; lptr+=2 )
- check_s ( lptr[0], lptr[1] );
- for( lptr=list; lptr<last; lptr+=2 )
- join_s ( left, right, lptr[0], lptr[1] );
- for( lptr=list; lptr != last; lptr++ ) {
- if( ((*lptr)->head()[0] <= value) && ((*lptr)->tail()[0] <= value) )
- left.addarc( *lptr );
- else
- right.addarc( *lptr );
- }
- } else { /* sort into decreasing s order */
- ArcTdirSorter sorter(*this);
- sorter.qsort( list, count );
- //::qsort ((void *)list, count, sizeof(Arc_ptr), (cmpfunc)compare_t);
- for( lptr=list; lptr<last; lptr+=2 )
- check_t ( lptr[0], lptr[1] );
- for( lptr=list; lptr<last; lptr+=2 )
- join_t ( left, right, lptr[0], lptr[1] );
- for( lptr=list; lptr != last; lptr++ ) {
- if( ((*lptr)->head()[1] <= value) && ((*lptr)->tail()[1] <= value) )
- left.addarc( *lptr );
- else
- right.addarc( *lptr );
- }
- }
-
- if( list != arclist ) delete[] list;
- unknown.adopt();
-}
-
-
-void
-Subdivider::check_s( Arc_ptr jarc1, Arc_ptr jarc2 )
-{
- assert( jarc1->check( ) != 0 );
- assert( jarc2->check( ) != 0 );
- assert( jarc1->next->check( ) != 0 );
- assert( jarc2->next->check( ) != 0 );
- assert( jarc1 != jarc2 );
-
- /* XXX - if these assertions fail, it is due to user error or
- undersampling */
- if( ! ( jarc1->tail()[0] < (jarc1)->head()[0] ) ) {
-#ifndef NDEBUG
- _glu_dprintf( "s difference %f\n", (jarc1)->tail()[0] - (jarc1)->head()[0] );
-#endif
- ::mylongjmp( jumpbuffer, 28 );
- }
-
- if( ! ( jarc2->tail()[0] > (jarc2)->head()[0] ) ) {
-#ifndef NDEBUG
- _glu_dprintf( "s difference %f\n", (jarc2)->tail()[0] - (jarc2)->head()[0] );
-#endif
- ::mylongjmp( jumpbuffer, 28 );
- }
-}
-
-inline void
-Subdivider::link( Arc_ptr jarc1, Arc_ptr jarc2, Arc_ptr up, Arc_ptr down )
-{
- up->nuid = down->nuid = 0; // XXX
-
- up->next = jarc2;
- down->next = jarc1;
- up->prev = jarc1->prev;
- down->prev = jarc2->prev;
-
- down->next->prev = down;
- up->next->prev = up;
- down->prev->next = down;
- up->prev->next = up;
-}
-
-inline void
-Subdivider::simple_link( Arc_ptr jarc1, Arc_ptr jarc2 )
-{
- Arc_ptr tmp = jarc2->prev;
- jarc2->prev = jarc1->prev;
- jarc1->prev = tmp;
- jarc2->prev->next = jarc2;
- jarc1->prev->next = jarc1;
-}
-
-
-/*----------------------------------------------------------------------------
- * join - add a pair of oppositely directed jordan arcs between two arcs
- *----------------------------------------------------------------------------
- */
-
-void
-Subdivider::join_s( Bin& left, Bin& right, Arc_ptr jarc1, Arc_ptr jarc2 )
-{
- assert( jarc1->check( ) != 0);
- assert( jarc2->check( ) != 0);
- assert( jarc1 != jarc2 );
-
- if( ! jarc1->getitail() )
- jarc1 = jarc1->next;
-
- if( ! jarc2->getitail() )
- jarc2 = jarc2->next;
-
- REAL s = jarc1->tail()[0];
- REAL t1 = jarc1->tail()[1];
- REAL t2 = jarc2->tail()[1];
-
- if( t1 == t2 ) {
- simple_link( jarc1, jarc2 );
- } else {
- Arc_ptr newright = new(arcpool) Arc( arc_right, 0 );
- Arc_ptr newleft = new(arcpool) Arc( arc_left, 0 );
- assert( t1 < t2 );
- if( isBezierArcType() ) {
- arctessellator.bezier( newright, s, s, t1, t2 );
- arctessellator.bezier( newleft, s, s, t2, t1 );
- } else {
- arctessellator.pwl_right( newright, s, t1, t2, stepsizes[0] );
- arctessellator.pwl_left( newleft, s, t2, t1, stepsizes[2] );
- }
- link( jarc1, jarc2, newright, newleft );
- left.addarc( newright );
- right.addarc( newleft );
- }
-
- assert( jarc1->check( ) != 0 );
- assert( jarc2->check( ) != 0 );
- assert( jarc1->next->check( ) != 0);
- assert( jarc2->next->check( ) != 0);
-}
-
-void
-Subdivider::check_t( Arc_ptr jarc1, Arc_ptr jarc2 )
-{
- assert( jarc1->check( ) != 0 );
- assert( jarc2->check( ) != 0 );
- assert( jarc1->next->check( ) != 0 );
- assert( jarc2->next->check( ) != 0 );
- assert( jarc1 != jarc2 );
-
- /* XXX - if these assertions fail, it is due to user error or
- undersampling */
- if( ! ( jarc1->tail()[1] < (jarc1)->head()[1] ) ) {
-#ifndef NDEBUG
- _glu_dprintf( "t difference %f\n", jarc1->tail()[1] - (jarc1)->head()[1] );
-#endif
- ::mylongjmp( jumpbuffer, 28 );
- }
-
- if( ! ( jarc2->tail()[1] > (jarc2)->head()[1] ) ) {
-#ifndef NDEBUG
- _glu_dprintf( "t difference %f\n", jarc2->tail()[1] - (jarc2)->head()[1] );
-#endif
- ::mylongjmp( jumpbuffer, 28 );
- }
-}
-
-/*----------------------------------------------------------------------------
- * join_t - add a pair of oppositely directed jordan arcs between two arcs
- *----------------------------------------------------------------------------
- */
-
-void
-Subdivider::join_t( Bin& bottom, Bin& top, Arc_ptr jarc1, Arc_ptr jarc2 )
-{
- assert( jarc1->check( ) != 0 );
- assert( jarc2->check( ) != 0 );
- assert( jarc1->next->check( ) != 0 );
- assert( jarc2->next->check( ) != 0 );
- assert( jarc1 != jarc2 );
-
- if( ! jarc1->getitail() )
- jarc1 = jarc1->next;
-
- if( ! jarc2->getitail() )
- jarc2 = jarc2->next;
-
- REAL s1 = jarc1->tail()[0];
- REAL s2 = jarc2->tail()[0];
- REAL t = jarc1->tail()[1];
-
- if( s1 == s2 ) {
- simple_link( jarc1, jarc2 );
- } else {
- Arc_ptr newtop = new(arcpool) Arc( arc_top, 0 );
- Arc_ptr newbot = new(arcpool) Arc( arc_bottom, 0 );
- assert( s1 > s2 );
- if( isBezierArcType() ) {
- arctessellator.bezier( newtop, s1, s2, t, t );
- arctessellator.bezier( newbot, s2, s1, t, t );
- } else {
- arctessellator.pwl_top( newtop, t, s1, s2, stepsizes[1] );
- arctessellator.pwl_bottom( newbot, t, s2, s1, stepsizes[3] );
- }
- link( jarc1, jarc2, newtop, newbot );
- bottom.addarc( newtop );
- top.addarc( newbot );
- }
-
- assert( jarc1->check( ) != 0 );
- assert( jarc2->check( ) != 0 );
- assert( jarc1->next->check( ) != 0 );
- assert( jarc2->next->check( ) != 0 );
-}
-
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