FreeWRL / FreeX3D
4.3.0
primitiveStream.h
1
/*
2
* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3
* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
4
*
5
* Permission is hereby granted, free of charge, to any person obtaining a
6
* copy of this software and associated documentation files (the "Software"),
7
* to deal in the Software without restriction, including without limitation
8
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
9
* and/or sell copies of the Software, and to permit persons to whom the
10
* Software is furnished to do so, subject to the following conditions:
11
*
12
* The above copyright notice including the dates of first publication and
13
* either this permission notice or a reference to
14
* http://oss.sgi.com/projects/FreeB/
15
* shall be included in all copies or substantial portions of the Software.
16
*
17
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20
* SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23
* SOFTWARE.
24
*
25
* Except as contained in this notice, the name of Silicon Graphics, Inc.
26
* shall not be used in advertising or otherwise to promote the sale, use or
27
* other dealings in this Software without prior written authorization from
28
* Silicon Graphics, Inc.
29
*/
30
/*
31
*/
32
33
/*we do not use the constans GL_... so that this file is independent of
34
*<GL/gl.h>
35
*/
36
37
#ifndef _PRIMITIVE_STREAM_H
38
#define _PRIMITIVE_STREAM_H
39
40
enum
{PRIMITIVE_STREAM_FAN, PRIMITIVE_STREAM_STRIP};
41
42
#include "definitions.h"
43
44
class
primStream
{
45
Int *lengths;
/*length[i]=number of vertices of ith primitive*/
46
Int *types;
/*each primive has a type: FAN or STREAM*/
47
Real *vertices;
/*the size >= 2 * num_vertices, each vertex (u,v)*/
48
49
/*the following size information are used for dynamic arrays*/
50
Int index_lengths;
/*the current available entry*/
51
Int size_lengths;
/*the allocated size of the array: lengths*/
52
Int index_vertices;
53
Int size_vertices;
54
55
/*the vertex is inserted one by one. counter is used to
56
*count the number of vertices which have been inserted so far in
57
*the current primitive
58
*/
59
Int counter;
60
61
public
:
62
primStream
(Int sizeLengths, Int sizeVertices);
63
~primStream
();
64
65
Int get_n_prims()
//num of primitives
66
{
67
return
index_lengths;
68
}
69
Int get_type(Int i)
//the type of ith primitive
70
{
71
return
types[i];
72
}
73
Int get_length(Int i)
//the length of the ith primitive
74
{
75
return
lengths[i];
76
}
77
Real* get_vertices() {
return
vertices;}
78
79
/*the begining of inserting a new primitive.
80
*reset counter to be 0.
81
*/
82
void
begin();
83
void
insert(Real u, Real v);
84
void
insert(Real v[2]) {insert(v[0], v[1]);}
85
void
end(Int type);
86
87
Int num_triangles();
88
89
void
triangle(Real A[2], Real B[2], Real C[2])
90
{
91
begin();
92
insert(A);
93
insert(B);
94
insert(C);
95
end(PRIMITIVE_STREAM_FAN);
96
}
97
void
print();
98
void
draw();
/*using GL to draw the primitives*/
99
};
100
101
102
103
104
105
106
107
108
#endif
109
primStream
Definition
primitiveStream.h:44
src
libnurbs
nurbtess
primitiveStream.h
Generated by
1.11.0