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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.
**
** $Date: 2001/03/17 00:25:40 $ $Revision: 1.1 $
*/
/*
** $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/internals/dataTransform.cc,v 1.1 2001/03/17 00:25:40 brianp Exp $
*/
#include <stdlib.h>
#include <stdio.h>
#include "glimports.h"
#include "myassert.h"
#include "nurbsconsts.h"
#include "trimvertex.h"
#include "dataTransform.h"
extern directedLine* arcLoopToDLineLoop(Arc_ptr loop);
static directedLine* copy_loop(Arc_ptr loop, Real2* vertArray, int& index, directedLine dline_buf[], sampledLine sline_buf[], int& index_dline)
{
directedLine *ret;
int old_index = index;
int i = index;
int j;
for(j=0; j<loop->pwlArc->npts-1; j++, i++)
{
vertArray[i][0] = loop->pwlArc->pts[j].param[0];
vertArray[i][1] = loop->pwlArc->pts[j].param[1];
}
loop->clearmark();
for(Arc_ptr jarc = loop->next; jarc != loop; jarc=jarc->next)
{
for(j=0; j<jarc->pwlArc->npts-1; j++, i++)
{
vertArray[i][0] = jarc->pwlArc->pts[j].param[0];
vertArray[i][1] = jarc->pwlArc->pts[j].param[1];
}
jarc->clearmark();
}
//copy the first vertex again
vertArray[i][0] = loop->pwlArc->pts[0].param[0];
vertArray[i][1] = loop->pwlArc->pts[0].param[1];
i++;
index=i;
directedLine* dline;
sampledLine* sline;
sline = &sline_buf[index_dline];
dline = &dline_buf[index_dline];
sline->init(2, &vertArray[old_index]);
dline->init(INCREASING, sline);
ret = dline;
index_dline++;
for(i=old_index+1; i<= index-2; i++)
{
sline = &sline_buf[index_dline];
dline = &dline_buf[index_dline];
sline->init(2, &vertArray[i]);
dline->init(INCREASING, sline);
ret->insert(dline);
index_dline++;
}
return ret;
}
static int num_edges(Bin& bin)
{
int sum=0;
for(Arc_ptr jarc = bin.firstarc(); jarc; jarc=bin.nextarc())
sum += jarc->pwlArc->npts-1;
return sum;
}
/*
directedLine* bin_to_DLineLoops(Bin& bin)
{
directedLine *ret=NULL;
directedLine *temp;
int numedges = num_edges(bin);
directedLine* dline_buf = new directedLine[numedges]; //not work for N32?
sampledLine* sline_buf=new sampledLine[numedges];
Real2* vertArray = new Real2[numedges*2];
int index = 0;
int index_dline = 0;
bin.markall();
for(Arc_ptr jarc = bin.firstarc(); jarc; jarc=bin.nextarc())
{
if(jarc->ismarked())
{
assert(jarc->check() != 0);
Arc_ptr jarchead = jarc;
do {
jarc->clearmark();
jarc = jarc->next;
} while(jarc != jarchead);
temp=copy_loop(jarchead, vertArray, index, dline_buf, sline_buf, index_dline);
ret = temp->insertPolygon(ret);
}
}
return ret;
}
*/
directedLine* bin_to_DLineLoops(Bin& bin)
{
directedLine *ret=NULL;
directedLine *temp;
bin.markall();
for(Arc_ptr jarc=bin.firstarc(); jarc; jarc=bin.nextarc()){
if(jarc->ismarked()) {
assert(jarc->check() != 0);
Arc_ptr jarchead = jarc;
do {
jarc->clearmark();
jarc = jarc->next;
} while(jarc != jarchead);
temp = arcLoopToDLineLoop(jarc);
ret = temp->insertPolygon(ret);
}
}
return ret;
}
directedLine* o_pwlcurve_to_DLines(directedLine* original, O_pwlcurve* pwl)
{
directedLine* ret = original;
for(Int i=0; i<pwl->npts-1; i++)
{
sampledLine* sline = new sampledLine(2);
sline->setPoint(0, pwl->pts[i].param);
sline->setPoint(1, pwl->pts[i+1].param);
directedLine* dline = new directedLine(INCREASING, sline);
if(ret == NULL)
ret = dline;
else
ret->insert(dline);
}
return ret;
}
directedLine* o_curve_to_DLineLoop(O_curve* cur)
{
directedLine *ret;
if(cur == NULL)
return NULL;
assert(cur->curvetype == ct_pwlcurve);
ret = o_pwlcurve_to_DLines(NULL, cur->curve.o_pwlcurve);
for(O_curve* temp = cur->next; temp != NULL; temp = temp->next)
{
assert(temp->curvetype == ct_pwlcurve);
ret = o_pwlcurve_to_DLines(ret, temp->curve.o_pwlcurve);
}
return ret;
}
directedLine* o_trim_to_DLineLoops(O_trim* trim)
{
O_trim* temp;
directedLine *ret;
if(trim == NULL)
return NULL;
ret = o_curve_to_DLineLoop(trim->o_curve);
for(temp=trim->next; temp != NULL; temp = temp->next)
{
ret = ret->insertPolygon(o_curve_to_DLineLoop(temp->o_curve));
}
return ret;
}
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