aboutsummaryrefslogtreecommitdiff
path: root/mesalib/src/glu/sgi/libnurbs/internals/arc.cc
diff options
context:
space:
mode:
Diffstat (limited to 'mesalib/src/glu/sgi/libnurbs/internals/arc.cc')
-rw-r--r--mesalib/src/glu/sgi/libnurbs/internals/arc.cc346
1 files changed, 0 insertions, 346 deletions
diff --git a/mesalib/src/glu/sgi/libnurbs/internals/arc.cc b/mesalib/src/glu/sgi/libnurbs/internals/arc.cc
deleted file mode 100644
index cd4c4048a..000000000
--- a/mesalib/src/glu/sgi/libnurbs/internals/arc.cc
+++ /dev/null
@@ -1,346 +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.
-*/
-
-/*
- * arc.c++
- *
- */
-
-#include <stdio.h>
-#include "glimports.h"
-#include "mystdio.h"
-#include "myassert.h"
-#include "arc.h"
-#include "bin.h"
-#include "pwlarc.h"
-#include "simplemath.h"
-
-/* local preprocessor definitions */
-#define ZERO 0.00001/*0.000001*/
-
-const int Arc::bezier_tag = (1<<13);
-const int Arc::arc_tag = (1<<3);
-const int Arc::tail_tag = (1<<6);
-
-/*--------------------------------------------------------------------------
- * makeSide - attach a pwl arc to an arc and mark it as a border arc
- *--------------------------------------------------------------------------
- */
-
-void
-Arc::makeSide( PwlArc *pwl, arc_side side )
-{
- assert( pwl != 0);
- assert( pwlArc == 0 );
- assert( pwl->npts > 0 );
- assert( pwl->pts != 0);
- pwlArc = pwl;
- clearbezier();
- setside( side );
-}
-
-
-/*--------------------------------------------------------------------------
- * numpts - count number of points on arc loop
- *--------------------------------------------------------------------------
- */
-
-int
-Arc::numpts( void )
-{
- Arc_ptr jarc = this;
- int npts = 0;
- do {
- npts += jarc->pwlArc->npts;
- jarc = jarc->next;
- } while( jarc != this );
- return npts;
-}
-
-/*--------------------------------------------------------------------------
- * markverts - mark each point with id of arc
- *--------------------------------------------------------------------------
- */
-
-void
-Arc::markverts( void )
-{
- Arc_ptr jarc = this;
-
- do {
- TrimVertex *p = jarc->pwlArc->pts;
- for( int i=0; i<jarc->pwlArc->npts; i++ )
- p[i].nuid = jarc->nuid;
- jarc = jarc->next;
- } while( jarc != this );
-}
-
-/*--------------------------------------------------------------------------
- * getextrema - find axis extrema on arc loop
- *--------------------------------------------------------------------------
- */
-
-void
-Arc::getextrema( Arc_ptr extrema[4] )
-{
- REAL leftpt, botpt, rightpt, toppt;
-
- extrema[0] = extrema[1] = extrema[2] = extrema[3] = this;
-
- leftpt = rightpt = this->tail()[0];
- botpt = toppt = this->tail()[1];
-
- for( Arc_ptr jarc = this->next; jarc != this; jarc = jarc->next ) {
- if ( jarc->tail()[0] < leftpt ||
- (jarc->tail()[0] <= leftpt && jarc->rhead()[0]<=leftpt)) {
- leftpt = jarc->pwlArc->pts->param[0];
- extrema[1] = jarc;
- }
- if ( jarc->tail()[0] > rightpt ||
- (jarc->tail()[0] >= rightpt && jarc->rhead()[0] >= rightpt)) {
- rightpt = jarc->pwlArc->pts->param[0];
- extrema[3] = jarc;
- }
- if ( jarc->tail()[1] < botpt ||
- (jarc->tail()[1] <= botpt && jarc->rhead()[1] <= botpt )) {
- botpt = jarc->pwlArc->pts->param[1];
- extrema[2] = jarc;
- }
- if ( jarc->tail()[1] > toppt ||
- (jarc->tail()[1] >= toppt && jarc->rhead()[1] >= toppt)) {
- toppt = jarc->pwlArc->pts->param[1];
- extrema[0] = jarc;
- }
- }
-}
-
-
-/*-------------------------------------------------------------------------
- * show - print to the stdout the vertices of a pwl arc
- *-------------------------------------------------------------------------
- */
-
-void
-Arc::show()
-{
-#ifndef NDEBUG
- _glu_dprintf( "\tPWLARC NP: %d FL: 1\n", pwlArc->npts );
- for( int i = 0; i < pwlArc->npts; i++ ) {
- _glu_dprintf( "\t\tVERTEX %f %f\n", pwlArc->pts[i].param[0],
- pwlArc->pts[i].param[1] );
- }
-#endif
-}
-
-/*-------------------------------------------------------------------------
- * print - print out the vertices of all pwl arcs on a loop
- *-------------------------------------------------------------------------
- */
-
-void
-Arc::print( void )
-{
- Arc_ptr jarc = this;
-
-#ifndef NDEBUG
- _glu_dprintf( "BGNTRIM\n" );
-#endif
- do {
- jarc->show( );
- jarc = jarc->next;
- } while (jarc != this);
-#ifndef NDEBUG
- _glu_dprintf("ENDTRIM\n" );
-#endif
-}
-
-/*-------------------------------------------------------------------------
- * isDisconnected - check if tail of arc and head of prev meet
- *-------------------------------------------------------------------------
- */
-
-int
-Arc::isDisconnected( void )
-{
- if( pwlArc == 0 ) return 0;
- if( prev->pwlArc == 0 ) return 0;
-
- REAL *p0 = tail();
- REAL *p1 = prev->rhead();
-
- if( ((p0[0] - p1[0]) > ZERO) || ((p1[0] - p0[0]) > ZERO) ||
- ((p0[1] - p1[1]) > ZERO) || ((p1[1] - p0[1]) > ZERO) ) {
-#ifndef NDEBUG
- _glu_dprintf( "x coord = %f %f %f\n", p0[0], p1[0], p0[0] - p1[0] );
- _glu_dprintf( "y coord = %f %f %f\n", p0[1], p1[1], p0[1] - p1[1] );
-#endif
- return 1;
- } else {
- /* average two points together */
- p0[0] = p1[0] = (p1[0] + p0[0]) * 0.5;
- p0[1] = p1[1] = (p1[1] + p0[1]) * 0.5;
- return 0;
- }
-}
-
-/*-------------------------------------------------------------------------
- * neq_vert - assert that two 2D vertices are not equal
- *-------------------------------------------------------------------------
- */
-
-inline static int
-neq_vert( REAL *v1, REAL *v2 )
-{
- return ((v1[0] != v2[0]) || (v1[1] != v2[1] )) ? 1 : 0;
-}
-
-/*-------------------------------------------------------------------------
- * check - verify consistency of a loop, including
- * 1) if pwl, no two consecutive vertices are identical
- * 2) the circular link pointers are valid
- * 3) the geometric info at the head and tail are consistent
- *-------------------------------------------------------------------------
- */
-
-int
-Arc::check( void )
-{
- if( this == 0 ) return 1;
- Arc_ptr jarc = this;
- do {
- assert( (jarc->pwlArc != 0) || (jarc->bezierArc != 0) );
-
- if (jarc->prev == 0 || jarc->next == 0) {
-#ifndef NDEBUG
- _glu_dprintf( "checkjarc:null next/prev pointer\n");
- jarc->print( );
-#endif
- return 0;
- }
-
- if (jarc->next->prev != jarc) {
-#ifndef NDEBUG
- _glu_dprintf( "checkjarc: pointer linkage screwed up\n");
- jarc->print( );
-#endif
- return 0;
- }
-
- if( jarc->pwlArc ) {
-#ifndef NDEBUG
- assert( jarc->pwlArc->npts >= 1 );
- assert( jarc->pwlArc->npts < 100000 );
-/*
- for( int i=0; i < jarc->pwlArc->npts-1; i++ )
- assert( neq_vert( jarc->pwlArc->pts[i].param,
- jarc->pwlArc->pts[i+1].param) );
-*/
-#endif
- if( jarc->prev->pwlArc ) {
- if( jarc->tail()[1] != jarc->prev->rhead()[1] ) {
-#ifndef NDEBUG
- _glu_dprintf( "checkjarc: geometric linkage screwed up 1\n");
- jarc->prev->show();
- jarc->show();
-#endif
- return 0;
- }
- if( jarc->tail()[0] != jarc->prev->rhead()[0] ) {
-
-#ifndef NDEBUG
- _glu_dprintf( "checkjarc: geometric linkage screwed up 2\n");
- jarc->prev->show();
- jarc->show();
-#endif
- return 0;
- }
- }
- if( jarc->next->pwlArc ) {
- if( jarc->next->tail()[0] != jarc->rhead()[0] ) {
-#ifndef NDEBUG
- _glu_dprintf( "checkjarc: geometric linkage screwed up 3\n");
- jarc->show();
- jarc->next->show();
-#endif
- return 0;
- }
- if( jarc->next->tail()[1] != jarc->rhead()[1] ) {
-#ifndef NDEBUG
- _glu_dprintf( "checkjarc: geometric linkage screwed up 4\n");
- jarc->show();
- jarc->next->show();
-#endif
- return 0;
- }
- }
- if( jarc->isbezier() ) {
- assert( jarc->pwlArc->npts == 2 );
- assert( (jarc->pwlArc->pts[0].param[0] == \
- jarc->pwlArc->pts[1].param[0]) ||\
- (jarc->pwlArc->pts[0].param[1] == \
- jarc->pwlArc->pts[1].param[1]) );
- }
- }
- jarc = jarc->next;
- } while (jarc != this);
- return 1;
-}
-
-
-#define TOL 0.00001
-
-inline long tooclose( REAL x, REAL y )
-{
- return (glu_abs(x-y) < TOL) ? 1 : 0;
-}
-
-
-/*--------------------------------------------------------------------------
- * append - append a jordan arc to a circularly linked list
- *--------------------------------------------------------------------------
- */
-
-Arc_ptr
-Arc::append( Arc_ptr jarc )
-{
- if( jarc != 0 ) {
- next = jarc->next;
- prev = jarc;
- next->prev = prev->next = this;
- } else {
- next = prev = this;
- }
- return this;
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-13 19:07:50 +0000