Synchronize with trunk's revision r57629.
[reactos.git] / dll / opengl / glu32 / src / 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 */
35 /*
36 */
37
38 #include <stdlib.h>
39 #include <stdio.h>
40 #include "glimports.h"
41 #include "myassert.h"
42 #include "nurbsconsts.h"
43 #include "trimvertex.h"
44 #include "dataTransform.h"
45
46 extern directedLine* arcLoopToDLineLoop(Arc_ptr loop);
47
48 #if 0 // UNUSED
49 static directedLine* copy_loop(Arc_ptr loop, Real2* vertArray, int& index, directedLine dline_buf[], sampledLine sline_buf[], int& index_dline)
50 {
51 directedLine *ret;
52 int old_index = index;
53 int i = index;
54 int j;
55 for(j=0; j<loop->pwlArc->npts-1; j++, i++)
56 {
57 vertArray[i][0] = loop->pwlArc->pts[j].param[0];
58 vertArray[i][1] = loop->pwlArc->pts[j].param[1];
59 }
60 loop->clearmark();
61
62 for(Arc_ptr jarc = loop->next; jarc != loop; jarc=jarc->next)
63 {
64 for(j=0; j<jarc->pwlArc->npts-1; j++, i++)
65 {
66 vertArray[i][0] = jarc->pwlArc->pts[j].param[0];
67 vertArray[i][1] = jarc->pwlArc->pts[j].param[1];
68 }
69 jarc->clearmark();
70 }
71 //copy the first vertex again
72 vertArray[i][0] = loop->pwlArc->pts[0].param[0];
73 vertArray[i][1] = loop->pwlArc->pts[0].param[1];
74 i++;
75 index=i;
76
77 directedLine* dline;
78 sampledLine* sline;
79 sline = &sline_buf[index_dline];
80 dline = &dline_buf[index_dline];
81 sline->init(2, &vertArray[old_index]);
82 dline->init(INCREASING, sline);
83 ret = dline;
84 index_dline++;
85
86 for(i=old_index+1; i<= index-2; i++)
87 {
88 sline = &sline_buf[index_dline];
89 dline = &dline_buf[index_dline];
90 sline->init(2, &vertArray[i]);
91 dline->init(INCREASING, sline);
92 ret->insert(dline);
93 index_dline++;
94 }
95 return ret;
96 }
97 #endif
98
99 #if 0 // UNUSED
100 static int num_edges(Bin& bin)
101 {
102 int sum=0;
103 for(Arc_ptr jarc = bin.firstarc(); jarc; jarc=bin.nextarc())
104 sum += jarc->pwlArc->npts-1;
105 return sum;
106 }
107 #endif
108
109 /*
110 directedLine* bin_to_DLineLoops(Bin& bin)
111 {
112 directedLine *ret=NULL;
113 directedLine *temp;
114
115 int numedges = num_edges(bin);
116 directedLine* dline_buf = new directedLine[numedges]; //not work for N32?
117 sampledLine* sline_buf=new sampledLine[numedges];
118
119 Real2* vertArray = new Real2[numedges*2];
120 int index = 0;
121 int index_dline = 0;
122 bin.markall();
123
124 for(Arc_ptr jarc = bin.firstarc(); jarc; jarc=bin.nextarc())
125 {
126 if(jarc->ismarked())
127 {
128 assert(jarc->check() != 0);
129 Arc_ptr jarchead = jarc;
130 do {
131 jarc->clearmark();
132 jarc = jarc->next;
133 } while(jarc != jarchead);
134 temp=copy_loop(jarchead, vertArray, index, dline_buf, sline_buf, index_dline);
135 ret = temp->insertPolygon(ret);
136 }
137 }
138
139 return ret;
140 }
141 */
142
143
144 directedLine* bin_to_DLineLoops(Bin& bin)
145 {
146 directedLine *ret=NULL;
147 directedLine *temp;
148 bin.markall();
149 for(Arc_ptr jarc=bin.firstarc(); jarc; jarc=bin.nextarc()){
150 if(jarc->ismarked()) {
151 assert(jarc->check() != 0);
152 Arc_ptr jarchead = jarc;
153 do {
154 jarc->clearmark();
155 jarc = jarc->next;
156 } while(jarc != jarchead);
157 temp = arcLoopToDLineLoop(jarc);
158 ret = temp->insertPolygon(ret);
159 }
160 }
161 return ret;
162 }
163
164 directedLine* o_pwlcurve_to_DLines(directedLine* original, O_pwlcurve* pwl)
165 {
166 directedLine* ret = original;
167 for(Int i=0; i<pwl->npts-1; i++)
168 {
169 sampledLine* sline = new sampledLine(2);
170 sline->setPoint(0, pwl->pts[i].param);
171 sline->setPoint(1, pwl->pts[i+1].param);
172 directedLine* dline = new directedLine(INCREASING, sline);
173 if(ret == NULL)
174 ret = dline;
175 else
176 ret->insert(dline);
177 }
178 return ret;
179 }
180
181 directedLine* o_curve_to_DLineLoop(O_curve* cur)
182 {
183 directedLine *ret;
184 if(cur == NULL)
185 return NULL;
186 assert(cur->curvetype == ct_pwlcurve);
187 ret = o_pwlcurve_to_DLines(NULL, cur->curve.o_pwlcurve);
188 for(O_curve* temp = cur->next; temp != NULL; temp = temp->next)
189 {
190 assert(temp->curvetype == ct_pwlcurve);
191 ret = o_pwlcurve_to_DLines(ret, temp->curve.o_pwlcurve);
192 }
193 return ret;
194 }
195
196 directedLine* o_trim_to_DLineLoops(O_trim* trim)
197 {
198 O_trim* temp;
199 directedLine *ret;
200 if(trim == NULL)
201 return NULL;
202 ret = o_curve_to_DLineLoop(trim->o_curve);
203
204 for(temp=trim->next; temp != NULL; temp = temp->next)
205 {
206 ret = ret->insertPolygon(o_curve_to_DLineLoop(temp->o_curve));
207 }
208 return ret;
209 }