ReactOS 0.4.15-dev-8413-gc1c91f2
curvelist.cc
Go to the documentation of this file.
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 * curvelist.c++
37 *
38 */
39
40//#include "glimports.h"
41//#include "myassert.h"
42//#include "mystdio.h"
43#include "quilt.h"
44#include "curvelist.h"
45#include "curve.h"
46//#include "types.h"
47
48Curvelist::Curvelist( Quilt *quilts, REAL pta, REAL ptb )
49{
50 curve = 0;
51 for( Quilt *q = quilts; q; q = q->next )
52 curve = new Curve( q, pta, ptb, curve );
53 range[0] = pta;
54 range[1] = ptb;
55 range[2] = ptb - pta;
57 stepsize = 0;
58}
59
61{
62 curve = 0;
63 for( Curve *c = upper.curve; c; c = c->next )
64 curve = new Curve( *c, value, curve );
65
66 range[0] = upper.range[0];
67 range[1] = value;
68 range[2] = value - upper.range[0];
69 upper.range[0] = value;
70 upper.range[2] = upper.range[1] - value;
72 stepsize = 0;
73}
74
76{
77 while( curve ) {
78 Curve *c = curve;
79 curve = curve->next;
80 delete c;
81 }
82}
83
84int
86{
87 for( Curve *c = curve; c; c = c->next )
88 if( c->cullCheck() == CULL_TRIVIAL_REJECT )
90 return CULL_ACCEPT;
91}
92
93void
95{
96 stepsize = range[2];
97 Curve *c;
98 for( c = curve; c; c = c->next ) {
99 c->getstepsize();
100 c->clamp();
101 stepsize = ((c->stepsize < stepsize) ? c->stepsize : stepsize);
102 if( c->needsSamplingSubdivision() ) break;
103 }
104 needsSubdivision = ( c ) ? 1 : 0;
105}
106
107int
109{
110 return needsSubdivision;
111}
112
Definition: curve.h:46
Curve * next
Definition: curve.h:51
void getstepsize(void)
Definition: curvelist.cc:94
float range[3]
Definition: curvelist.h:58
float stepsize
Definition: curvelist.h:60
int cullCheck(void)
Definition: curvelist.cc:85
~Curvelist(void)
Definition: curvelist.cc:75
int needsSubdivision
Definition: curvelist.h:59
Curvelist(Quilt *, REAL, REAL)
Definition: curvelist.cc:48
int needsSamplingSubdivision()
Definition: curvelist.cc:108
Curve * curve
Definition: curvelist.h:57
Definition: quilt.h:64
#define CULL_ACCEPT
Definition: defines.h:42
#define CULL_TRIVIAL_REJECT
Definition: defines.h:40
float REAL
Definition: types.h:41
GLdouble GLdouble GLdouble GLdouble q
Definition: gl.h:2063
const GLubyte * c
Definition: glext.h:8905
GLenum GLint * range
Definition: glext.h:7539
#define c
Definition: ke_i.h:80
struct define * next
Definition: compiler.c:65
Definition: pdh_main.c:94