ReactOS  0.4.14-dev-55-g2da92ac
arcsorter.cc
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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  * arcsorter.c++
37  *
38  */
39 
40 #ifndef __gluarcsorter_c_
41 #define __gluarcsorter_c_
42 
43 //#include "glimports.h"
44 //#include "arc.h"
45 #include "arcsorter.h"
46 #include "subdivider.h"
47 
48 ArcSorter::ArcSorter(Subdivider &s) : Sorter( sizeof( Arc ** ) ), subdivider(s)
49 {
50 }
51 
52 int
53 ArcSorter::qscmp( char *, char * )
54 {
55  _glu_dprintf( "ArcSorter::qscmp: pure virtual called\n" );
56  return 0;
57 }
58 
59 void
61 {
62  Sorter::qsort( (void *) a, n );
63 }
64 
65 void
66 ArcSorter::qsexc( char *i, char *j )// i<-j, j<-i
67 {
68  Arc **jarc1 = (Arc **) i;
69  Arc **jarc2 = (Arc **) j;
70  Arc *tmp = *jarc1;
71  *jarc1 = *jarc2;
72  *jarc2 = tmp;
73 }
74 
75 void
76 ArcSorter::qstexc( char *i, char *j, char *k )// i<-k, k<-j, j<-i
77 {
78  Arc **jarc1 = (Arc **) i;
79  Arc **jarc2 = (Arc **) j;
80  Arc **jarc3 = (Arc **) k;
81  Arc *tmp = *jarc1;
82  *jarc1 = *jarc3;
83  *jarc3 = *jarc2;
84  *jarc2 = tmp;
85 }
86 
87 
89 {
90 }
91 
92 int
93 ArcSdirSorter::qscmp( char *i, char *j )
94 {
95  Arc *jarc1 = *(Arc **) i;
96  Arc *jarc2 = *(Arc **) j;
97 
98  int v1 = (jarc1->getitail() ? 0 : (jarc1->pwlArc->npts - 1));
99  int v2 = (jarc2->getitail() ? 0 : (jarc2->pwlArc->npts - 1));
100 
101  REAL diff = jarc1->pwlArc->pts[v1].param[1] -
102  jarc2->pwlArc->pts[v2].param[1];
103 
104  if( diff < 0.0)
105  return -1;
106  else if( diff > 0.0)
107  return 1;
108  else {
109  if( v1 == 0 ) {
110  if( jarc2->tail()[0] < jarc1->tail()[0] ) {
111  return subdivider.ccwTurn_sl( jarc2, jarc1 ) ? 1 : -1;
112  } else {
113  return subdivider.ccwTurn_sr( jarc2, jarc1 ) ? -1 : 1;
114  }
115  } else {
116  if( jarc2->head()[0] < jarc1->head()[0] ) {
117  return subdivider.ccwTurn_sl( jarc1, jarc2 ) ? -1 : 1;
118  } else {
119  return subdivider.ccwTurn_sr( jarc1, jarc2 ) ? 1 : -1;
120  }
121  }
122  }
123 }
124 
126 {
127 }
128 
129 /*----------------------------------------------------------------------------
130  * ArcTdirSorter::qscmp -
131  * compare two axis monotone arcs that are incident
132  * to the line T == compare_value. Determine which of the
133  * two intersects that line with a LESSER S value. If
134  * jarc1 does, return 1. If jarc2 does, return -1.
135  *----------------------------------------------------------------------------
136  */
137 int
138 ArcTdirSorter::qscmp( char *i, char *j )
139 {
140  Arc *jarc1 = *(Arc **) i;
141  Arc *jarc2 = *(Arc **) j;
142 
143  int v1 = (jarc1->getitail() ? 0 : (jarc1->pwlArc->npts - 1));
144  int v2 = (jarc2->getitail() ? 0 : (jarc2->pwlArc->npts - 1));
145 
146  REAL diff = jarc1->pwlArc->pts[v1].param[0] -
147  jarc2->pwlArc->pts[v2].param[0];
148 
149  if( diff < 0.0)
150  return 1;
151  else if( diff > 0.0)
152  return -1;
153  else {
154  if( v1 == 0 ) {
155  if (jarc2->tail()[1] < jarc1->tail()[1]) {
156  return subdivider.ccwTurn_tl( jarc2, jarc1 ) ? 1 : -1;
157  } else {
158  return subdivider.ccwTurn_tr( jarc2, jarc1 ) ? -1 : 1;
159  }
160  } else {
161  if( jarc2->head()[1] < jarc1->head()[1] ) {
162  return subdivider.ccwTurn_tl( jarc1, jarc2 ) ? -1 : 1;
163  } else {
164  return subdivider.ccwTurn_tr( jarc1, jarc2 ) ? 1 : -1;
165  }
166  }
167  }
168 }
169 
170 
171 
172 #endif /* __gluarcsorter_c_ */
int npts
Definition: pwlarc.h:47
void qsort(Arc **a, int n)
Definition: arcsorter.cc:60
REAL * tail()
Definition: arc.h:88
Definition: sorter.h:36
Subdivider & subdivider
Definition: arcsorter.h:50
ActualNumberDriverObjects * sizeof(PDRIVER_OBJECT)) PDRIVER_OBJECT *DriverObjectList
int qscmp(char *, char *)
Definition: arcsorter.cc:138
GLdouble n
Definition: glext.h:7729
Definition: arc.h:55
virtual int qscmp(char *, char *)
Definition: arcsorter.cc:53
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
int ccwTurn_sl(Arc_ptr, Arc_ptr)
Definition: ccw.cc:170
int ccwTurn_sr(Arc_ptr, Arc_ptr)
Definition: ccw.cc:57
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint GLint GLint j
Definition: glfuncs.h:250
void qstexc(char *i, char *j, char *k)
Definition: arcsorter.cc:76
GLdouble s
Definition: gl.h:2039
void qsexc(char *i, char *j)
Definition: arcsorter.cc:66
PwlArc * pwlArc
Definition: arc.h:65
GLfloat GLfloat GLfloat v2
Definition: glext.h:6063
int qscmp(char *, char *)
Definition: arcsorter.cc:93
ArcTdirSorter(Subdivider &)
Definition: arcsorter.cc:125
int getitail()
Definition: arc.h:97
REAL param[2]
Definition: trimvertex.h:45
ArcSdirSorter(Subdivider &)
Definition: arcsorter.cc:88
void qsort(void *a, int n)
Definition: sorter.cc:50
int ccwTurn_tl(Arc_ptr, Arc_ptr)
Definition: ccw.cc:396
GLboolean GLboolean GLboolean GLboolean a
Definition: glext.h:6204
float REAL
Definition: types.h:41
REAL * head()
Definition: arc.h:89
TrimVertex * pts
Definition: pwlarc.h:46
GLfloat GLfloat v1
Definition: glext.h:6062
int k
Definition: mpi.c:3369
int ccwTurn_tr(Arc_ptr, Arc_ptr)
Definition: ccw.cc:283
ArcSorter(Subdivider &)
Definition: arcsorter.cc:48