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116 lines
3.8 KiB
C++
116 lines
3.8 KiB
C++
/*
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** License Applicability. Except to the extent portions of this file are
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** made subject to an alternative license as permitted in the SGI Free
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** Software License B, Version 1.1 (the "License"), the contents of this
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** file are subject only to the provisions of the License. You may not use
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** this file except in compliance with the License. You may obtain a copy
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** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
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** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
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**
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** http://oss.sgi.com/projects/FreeB
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**
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** Note that, as provided in the License, the Software is distributed on an
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** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
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** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
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** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
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** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
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**
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** Original Code. The Original Code is: OpenGL Sample Implementation,
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** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
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** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
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** Copyright in any portions created by third parties is as indicated
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** elsewhere herein. All Rights Reserved.
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**
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** Additional Notice Provisions: The application programming interfaces
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** established by SGI in conjunction with the Original Code are The
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** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
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** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
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** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
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** Window System(R) (Version 1.3), released October 19, 1998. This software
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** was created using the OpenGL(R) version 1.2.1 Sample Implementation
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** published by SGI, but has not been independently verified as being
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** compliant with the OpenGL(R) version 1.2.1 Specification.
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**
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** $Date$ $Revision: 1.1 $
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*/
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/*
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** $Header: /cygdrive/c/RCVS/CVS/ReactOS/reactos/lib/glu32/libnurbs/internals/dataTransform.cc,v 1.1 2004/02/02 16:39:11 navaraf Exp $
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include "glimports.h"
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#include "myassert.h"
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#include "nurbsconsts.h"
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#include "trimvertex.h"
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#include "dataTransform.h"
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extern directedLine* arcLoopToDLineLoop(Arc_ptr loop);
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directedLine* bin_to_DLineLoops(Bin& bin)
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{
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directedLine *ret=NULL;
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directedLine *temp;
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bin.markall();
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for(Arc_ptr jarc=bin.firstarc(); jarc; jarc=bin.nextarc()){
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if(jarc->ismarked()) {
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assert(jarc->check() != 0);
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Arc_ptr jarchead = jarc;
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do {
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jarc->clearmark();
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jarc = jarc->next;
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} while(jarc != jarchead);
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temp = arcLoopToDLineLoop(jarc);
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ret = temp->insertPolygon(ret);
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}
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}
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return ret;
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}
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directedLine* o_pwlcurve_to_DLines(directedLine* original, O_pwlcurve* pwl)
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{
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directedLine* ret = original;
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for(Int i=0; i<pwl->npts-1; i++)
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{
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sampledLine* sline = new sampledLine(2);
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sline->setPoint(0, pwl->pts[i].param);
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sline->setPoint(1, pwl->pts[i+1].param);
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directedLine* dline = new directedLine(INCREASING, sline);
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if(ret == NULL)
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ret = dline;
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else
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ret->insert(dline);
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}
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return ret;
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}
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directedLine* o_curve_to_DLineLoop(O_curve* cur)
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{
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directedLine *ret;
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if(cur == NULL)
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return NULL;
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assert(cur->curvetype == ct_pwlcurve);
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ret = o_pwlcurve_to_DLines(NULL, cur->curve.o_pwlcurve);
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for(O_curve* temp = cur->next; temp != NULL; temp = temp->next)
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{
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assert(temp->curvetype == ct_pwlcurve);
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ret = o_pwlcurve_to_DLines(ret, temp->curve.o_pwlcurve);
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}
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return ret;
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}
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directedLine* o_trim_to_DLineLoops(O_trim* trim)
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{
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O_trim* temp;
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directedLine *ret;
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if(trim == NULL)
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return NULL;
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ret = o_curve_to_DLineLoop(trim->o_curve);
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for(temp=trim->next; temp != NULL; temp = temp->next)
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{
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ret = ret->insertPolygon(o_curve_to_DLineLoop(temp->o_curve));
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}
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return ret;
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}
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