reactos/dll/win32/glu32/libnurbs/internals/dataTransform.cc

   1 /*
   2 ** License Applicability. Except to the extent portions of this file are
   3 ** made subject to an alternative license as permitted in the SGI Free
   4 ** Software License B, Version 1.1 (the "License"), the contents of this
   5 ** file are subject only to the provisions of the License. You may not use
   6 ** this file except in compliance with the License. You may obtain a copy
   7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
   8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
   9 **
  10 ** http://oss.sgi.com/projects/FreeB
  11 **
  12 ** Note that, as provided in the License, the Software is distributed on an
  13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  17 **
  18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  21 ** Copyright in any portions created by third parties is as indicated
  22 ** elsewhere herein. All Rights Reserved.
  23 **
  24 ** Additional Notice Provisions: The application programming interfaces
  25 ** established by SGI in conjunction with the Original Code are The
  26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  31 ** published by SGI, but has not been independently verified as being
  32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  33 **
  34 ** $Date$ $Revision: 1.1 $
  35 */
  36 /*
  37 ** $Header: /cygdrive/c/RCVS/CVS/ReactOS/reactos/lib/glu32/libnurbs/internals/dataTransform.cc,v 1.1 2004/02/02 16:39:11 navaraf Exp $
  38 */
  39
  40 #include <stdlib.h>
  41 #include <stdio.h>
  42 #include "glimports.h"
  43 #include "myassert.h"
  44 #include "nurbsconsts.h"
  45 #include "trimvertex.h"
  46 #include "dataTransform.h"
  47
  48 extern directedLine* arcLoopToDLineLoop(Arc_ptr loop);
  49
  50 directedLine* bin_to_DLineLoops(Bin& bin)
  51 {
  52   directedLine *ret=NULL;
  53   directedLine *temp;
  54   bin.markall();
  55   for(Arc_ptr jarc=bin.firstarc(); jarc; jarc=bin.nextarc()){
  56     if(jarc->ismarked()) {
  57       assert(jarc->check() != 0);
  58       Arc_ptr jarchead = jarc;
  59       do {
  60         jarc->clearmark();
  61         jarc = jarc->next;
  62       } while(jarc != jarchead);
  63       temp =  arcLoopToDLineLoop(jarc);
  64       ret = temp->insertPolygon(ret);
  65     }
  66   }
  67   return ret;
  68 }
  69
  70 directedLine* o_pwlcurve_to_DLines(directedLine* original, O_pwlcurve* pwl)
  71 {
  72   directedLine* ret = original;
  73   for(Int i=0; i<pwl->npts-1; i++)
  74     {
  75       sampledLine* sline = new sampledLine(2);
  76       sline->setPoint(0, pwl->pts[i].param);
  77       sline->setPoint(1, pwl->pts[i+1].param);
  78       directedLine* dline = new directedLine(INCREASING, sline);
  79       if(ret == NULL)
  80         ret = dline;
  81       else
  82         ret->insert(dline);
  83     }
  84   return ret;
  85 }
  86
  87 directedLine* o_curve_to_DLineLoop(O_curve* cur)
  88 {
  89   directedLine *ret;
  90   if(cur == NULL)
  91     return NULL;
  92   assert(cur->curvetype == ct_pwlcurve);
  93   ret = o_pwlcurve_to_DLines(NULL, cur->curve.o_pwlcurve);
  94   for(O_curve* temp = cur->next; temp != NULL; temp = temp->next)
  95     {
  96       assert(temp->curvetype == ct_pwlcurve);
  97       ret = o_pwlcurve_to_DLines(ret, temp->curve.o_pwlcurve);
  98     }
  99   return ret;
 100 }
 101
 102 directedLine* o_trim_to_DLineLoops(O_trim* trim)
 103 {
 104   O_trim* temp;
 105   directedLine *ret;
 106   if(trim == NULL)
 107     return NULL;
 108   ret = o_curve_to_DLineLoop(trim->o_curve);
 109
 110   for(temp=trim->next; temp != NULL; temp = temp->next)
 111     {
 112       ret = ret->insertPolygon(o_curve_to_DLineLoop(temp->o_curve));
 113     }
 114   return ret;
 115 }