blob: bbd55a6a330ea41b2eed2fb622c91fb5d0039fc0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/*
**************************************************************************
description
--------------------
copyright : (C) 2000-2001 by Andreas Zehender
email : [email protected]
**************************************************************************
**************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
**************************************************************************/
#ifndef PMLINES_H
#define PMLINES_H
#include <tqptrlist.h>
#include <GL/gl.h>
#include "pmdebug.h"
/**
* Line to display with index of start and end point.
*
* Line of a @ref PMViewStructure. Only the indices in a @ref PMPointArray
* are stored.
*
* Optimized for OpenGL
*/
class PMLine
{
public:
/**
* Default constructor
*/
PMLine( )
{
m_start = 0;
m_end = 0;
}
/**
* Creates a line with start point si and end point ei. If si is greater
* than ei, si and ei are swapped.
*/
PMLine( const GLuint si, const GLuint ei )
{ m_start = si; m_end = ei; checkPoints( ); }
/**
* Sets the start point.
*/
void setStartPoint( GLuint si ) { m_start = si; checkPoints( ); }
/**
* Sets the end point.
*/
void setEndPoint( GLuint ei ) { m_end = ei; checkPoints( ); }
/**
* Returns the start point.
*/
GLuint startPoint( ) const { return m_start; }
/**
* Returns the end point.
*/
GLuint endPoint( ) const { return m_end; }
private:
/**
* Swaps the two points.
*/
void swapPoints( ) { GLuint help = m_start; m_start = m_end; m_end = help; }
/**
* Checks, if si < ei and swaps the two points if necessary
*/
void checkPoints( )
{
if( m_start == m_end ) kdError( PMArea ) << "Start index = end index in PMLine" << "\n";
if( m_start > m_end ) swapPoints( );
}
/**
* The start and end points (indices!)
*
* THESE MEMBERS HAVE TO BE THE ONLY ONE (for rendering with OpenGl)
*/
GLuint m_start, m_end;
};
typedef TQPtrListIterator<PMLine> PMLineListIterator;
/**
* A list of @ref PMLine objects.
*
* This class stores all lines of a @ref PMViewStructure. A line is
* described by a start and end point. Only the indices in a @ref PMPointArray
* are stored.
*/
typedef TQMemArray<PMLine> PMLineArray;
#endif
|
