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<h1>qwt_double_interval.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span>
16
<a name="l00002"></a>00002 <span class="comment"> * Qwt Widget Library</span>
17
<a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span>
18
<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span>
19
<a name="l00005"></a>00005 <span class="comment"> * </span>
20
<a name="l00006"></a>00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
21
<a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span>
22
<a name="l00008"></a>00008 <span class="comment"> *****************************************************************************/</span>
23
<a name="l00009"></a>00009
24
<a name="l00010"></a>00010 <span class="preprocessor">#include <qglobal.h></span>
25
<a name="l00011"></a>00011 <span class="preprocessor">#if QT_VERSION >= 0x040000</span>
26
<a name="l00012"></a>00012 <span class="preprocessor"></span><span class="preprocessor">#include <qalgorithms.h></span>
27
<a name="l00013"></a>00013 <span class="preprocessor">#else</span>
28
<a name="l00014"></a>00014 <span class="preprocessor"></span><span class="preprocessor">#include <qtl.h></span>
29
<a name="l00015"></a>00015 <span class="preprocessor">#endif</span>
30
<a name="l00016"></a>00016 <span class="preprocessor"></span>
31
<a name="l00017"></a>00017 <span class="preprocessor">#include "qwt_math.h"</span>
32
<a name="l00018"></a>00018 <span class="preprocessor">#include "qwt_double_interval.h"</span>
33
<a name="l00019"></a>00019
34
<a name="l00028"></a><a class="code" href="class_qwt_double_interval.html#e4735252fef79bff0bda2dc61fb886c2">00028</a> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> <a class="code" href="class_qwt_double_interval.html#e4735252fef79bff0bda2dc61fb886c2">QwtDoubleInterval::normalized</a>()<span class="keyword"> const</span>
35
<a name="l00029"></a>00029 <span class="keyword"></span>{
36
<a name="l00030"></a>00030 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() )
37
<a name="l00031"></a>00031 {
38
<a name="l00032"></a>00032 <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>(d_maxValue, d_minValue);
39
<a name="l00033"></a>00033 }
40
<a name="l00034"></a>00034 <span class="keywordflow">else</span>
41
<a name="l00035"></a>00035 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
42
<a name="l00036"></a>00036 }
43
<a name="l00037"></a>00037
44
<a name="l00043"></a><a class="code" href="class_qwt_double_interval.html#ad0ecc63759dd0cded108b111649601e">00043</a> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> <a class="code" href="class_qwt_double_interval.html#ad0ecc63759dd0cded108b111649601e">QwtDoubleInterval::inverted</a>()<span class="keyword"> const</span>
45
<a name="l00044"></a>00044 <span class="keyword"></span>{
46
<a name="l00045"></a>00045 <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>(d_maxValue, d_minValue);
47
<a name="l00046"></a>00046 }
48
<a name="l00047"></a>00047
49
<a name="l00054"></a><a class="code" href="class_qwt_double_interval.html#8468036025b90b7b420722c2bd165fcb">00054</a> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_double_interval.html#8468036025b90b7b420722c2bd165fcb">QwtDoubleInterval::contains</a>(<span class="keywordtype">double</span> value)<span class="keyword"> const</span>
50
<a name="l00055"></a>00055 <span class="keyword"></span>{
51
<a name="l00056"></a>00056 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() )
52
<a name="l00057"></a>00057 <span class="keywordflow">return</span> <span class="keyword">false</span>;
53
<a name="l00058"></a>00058
54
<a name="l00059"></a>00059 <span class="keywordflow">return</span> (value >= d_minValue) && (value <= d_maxValue);
55
<a name="l00060"></a>00060 }
56
<a name="l00061"></a>00061
57
<a name="l00063"></a><a class="code" href="class_qwt_double_interval.html#f6f3a0baf79d261237fb4aca2f099716">00063</a> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> <a class="code" href="class_qwt_double_interval.html#f6f3a0baf79d261237fb4aca2f099716">QwtDoubleInterval::unite</a>(
58
<a name="l00064"></a>00064 <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> &interval)<span class="keyword"> const</span>
59
<a name="l00065"></a>00065 <span class="keyword"></span>{
60
<a name="l00066"></a>00066 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() )
61
<a name="l00067"></a>00067 {
62
<a name="l00068"></a>00068 <span class="keywordflow">if</span> ( !interval.<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() )
63
<a name="l00069"></a>00069 <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>();
64
<a name="l00070"></a>00070 <span class="keywordflow">else</span>
65
<a name="l00071"></a>00071 <span class="keywordflow">return</span> interval;
66
<a name="l00072"></a>00072 }
67
<a name="l00073"></a>00073 <span class="keywordflow">if</span> ( !interval.<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() )
68
<a name="l00074"></a>00074 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
69
<a name="l00075"></a>00075
70
<a name="l00076"></a>00076 <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a> = qwtMin(d_minValue, interval.<a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a>());
71
<a name="l00077"></a>00077 <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="class_qwt_double_interval.html#8fd8629d76f24d5494e59458cd79c4e2">maxValue</a> = qwtMax(d_maxValue, interval.<a class="code" href="class_qwt_double_interval.html#8fd8629d76f24d5494e59458cd79c4e2">maxValue</a>());
72
<a name="l00078"></a>00078
73
<a name="l00079"></a>00079 <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>(minValue, maxValue);
74
<a name="l00080"></a>00080 }
75
<a name="l00081"></a>00081
76
<a name="l00083"></a><a class="code" href="class_qwt_double_interval.html#52488d71ecc5dee5ea0a4106bd7901f4">00083</a> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> <a class="code" href="class_qwt_double_interval.html#52488d71ecc5dee5ea0a4106bd7901f4">QwtDoubleInterval::intersect</a>(
77
<a name="l00084"></a>00084 <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> &interval)<span class="keyword"> const</span>
78
<a name="l00085"></a>00085 <span class="keyword"></span>{
79
<a name="l00086"></a>00086 <span class="keywordflow">if</span> ( !interval.<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() || !<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() )
80
<a name="l00087"></a>00087 <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>();
81
<a name="l00088"></a>00088
82
<a name="l00089"></a>00089 <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> i1 = *<span class="keyword">this</span>;
83
<a name="l00090"></a>00090 <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> i2 = interval;
84
<a name="l00091"></a>00091
85
<a name="l00092"></a>00092 <span class="keywordflow">if</span> ( i1.<a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a>() > i2.<a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a>() )
86
<a name="l00093"></a>00093 qSwap(i1, i2);
87
<a name="l00094"></a>00094
88
<a name="l00095"></a>00095 <span class="keywordflow">if</span> ( i1.<a class="code" href="class_qwt_double_interval.html#8fd8629d76f24d5494e59458cd79c4e2">maxValue</a>() < i2.<a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a>() )
89
<a name="l00096"></a>00096 <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>();
90
<a name="l00097"></a>00097
91
<a name="l00098"></a>00098 <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>(i2.<a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a>(),
92
<a name="l00099"></a>00099 qwtMin(i1.<a class="code" href="class_qwt_double_interval.html#8fd8629d76f24d5494e59458cd79c4e2">maxValue</a>(), i2.<a class="code" href="class_qwt_double_interval.html#8fd8629d76f24d5494e59458cd79c4e2">maxValue</a>()));
93
<a name="l00100"></a>00100 }
94
<a name="l00101"></a>00101
95
<a name="l00102"></a><a class="code" href="class_qwt_double_interval.html#08451058f63dd6b4f8e5a23ba955454a">00102</a> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a>& <a class="code" href="class_qwt_double_interval.html#08451058f63dd6b4f8e5a23ba955454a">QwtDoubleInterval::operator|=</a>(
96
<a name="l00103"></a>00103 <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> &interval)
97
<a name="l00104"></a>00104 {
98
<a name="l00105"></a>00105 *<span class="keyword">this</span> = *<span class="keyword">this</span> | interval;
99
<a name="l00106"></a>00106 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
100
<a name="l00107"></a>00107 }
101
<a name="l00108"></a>00108
102
<a name="l00109"></a><a class="code" href="class_qwt_double_interval.html#7faf407a4d6fcfbd15e7d1c425293908">00109</a> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a>& <a class="code" href="class_qwt_double_interval.html#7faf407a4d6fcfbd15e7d1c425293908">QwtDoubleInterval::operator&=</a>(
103
<a name="l00110"></a>00110 <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> &interval)
104
<a name="l00111"></a>00111 {
105
<a name="l00112"></a>00112 *<span class="keyword">this</span> = *<span class="keyword">this</span> & interval;
106
<a name="l00113"></a>00113 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
107
<a name="l00114"></a>00114 }
108
<a name="l00115"></a>00115
109
<a name="l00119"></a><a class="code" href="class_qwt_double_interval.html#f5e38d3d8fe79ca8f137df616e36b5d7">00119</a> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_double_interval.html#f5e38d3d8fe79ca8f137df616e36b5d7">QwtDoubleInterval::intersects</a>(<span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> &interval)<span class="keyword"> const</span>
110
<a name="l00120"></a>00120 <span class="keyword"></span>{
111
<a name="l00121"></a>00121 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() || !interval.<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() )
112
<a name="l00122"></a>00122 <span class="keywordflow">return</span> <span class="keyword">false</span>;
113
<a name="l00123"></a>00123
114
<a name="l00124"></a>00124 <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> i1 = *<span class="keyword">this</span>;
115
<a name="l00125"></a>00125 <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> i2 = interval;
116
<a name="l00126"></a>00126
117
<a name="l00127"></a>00127 <span class="keywordflow">if</span> ( i1.<a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a>() > i2.<a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a>() )
118
<a name="l00128"></a>00128 qSwap(i1, i2);
119
<a name="l00129"></a>00129
120
<a name="l00130"></a>00130 <span class="keywordflow">return</span> i1.<a class="code" href="class_qwt_double_interval.html#8fd8629d76f24d5494e59458cd79c4e2">maxValue</a>() >= i2.<a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a>();
121
<a name="l00131"></a>00131 }
122
<a name="l00132"></a>00132
123
<a name="l00140"></a><a class="code" href="class_qwt_double_interval.html#762d619c1af104da8b73c6009b7cd669">00140</a> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> <a class="code" href="class_qwt_double_interval.html#762d619c1af104da8b73c6009b7cd669">QwtDoubleInterval::symmetrize</a>(<span class="keywordtype">double</span> value)<span class="keyword"> const</span>
124
<a name="l00141"></a>00141 <span class="keyword"></span>{
125
<a name="l00142"></a>00142 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() )
126
<a name="l00143"></a>00143 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
127
<a name="l00144"></a>00144
128
<a name="l00145"></a>00145 <span class="keyword">const</span> <span class="keywordtype">double</span> delta =
129
<a name="l00146"></a>00146 qwtMax(qwtAbs(value - d_maxValue), qwtAbs(value - d_minValue));
130
<a name="l00147"></a>00147
131
<a name="l00148"></a>00148 <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>(value - delta, value + delta);
132
<a name="l00149"></a>00149 }
133
<a name="l00150"></a>00150
134
<a name="l00159"></a><a class="code" href="class_qwt_double_interval.html#01ad17798ad6236638a16771405075cd">00159</a> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> <a class="code" href="class_qwt_double_interval.html#01ad17798ad6236638a16771405075cd">QwtDoubleInterval::limited</a>(
135
<a name="l00160"></a>00160 <span class="keywordtype">double</span> lBound, <span class="keywordtype">double</span> hBound)<span class="keyword"> const</span>
136
<a name="l00161"></a>00161 <span class="keyword"></span>{
137
<a name="l00162"></a>00162 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() || lBound > hBound )
138
<a name="l00163"></a>00163 <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>();
139
<a name="l00164"></a>00164
140
<a name="l00165"></a>00165 <span class="keywordtype">double</span> <a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a> = qwtMax(d_minValue, lBound);
141
<a name="l00166"></a>00166 minValue = qwtMin(minValue, hBound);
142
<a name="l00167"></a>00167
143
<a name="l00168"></a>00168 <span class="keywordtype">double</span> <a class="code" href="class_qwt_double_interval.html#8fd8629d76f24d5494e59458cd79c4e2">maxValue</a> = qwtMax(d_maxValue, lBound);
144
<a name="l00169"></a>00169 maxValue = qwtMin(maxValue, hBound);
145
<a name="l00170"></a>00170
146
<a name="l00171"></a>00171 <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>(minValue, maxValue);
147
<a name="l00172"></a>00172 }
148
<a name="l00173"></a>00173
149
<a name="l00185"></a><a class="code" href="class_qwt_double_interval.html#718e883366caa45e24b2ba4b9d529f11">00185</a> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> <a class="code" href="class_qwt_double_interval.html#718e883366caa45e24b2ba4b9d529f11">QwtDoubleInterval::extend</a>(<span class="keywordtype">double</span> value)<span class="keyword"> const</span>
150
<a name="l00186"></a>00186 <span class="keyword"></span>{
151
<a name="l00187"></a>00187 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() )
152
<a name="l00188"></a>00188 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
153
<a name="l00189"></a>00189
154
<a name="l00190"></a>00190 <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>(
155
<a name="l00191"></a>00191 qwtMin(value, d_minValue), qwtMax(value, d_maxValue) );
156
<a name="l00192"></a>00192 }
157
<a name="l00193"></a>00193
158
<a name="l00194"></a><a class="code" href="class_qwt_double_interval.html#a65305f7334c0ab9507a5948d1d384e8">00194</a> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a>& <a class="code" href="class_qwt_double_interval.html#08451058f63dd6b4f8e5a23ba955454a">QwtDoubleInterval::operator|=</a>(<span class="keywordtype">double</span> value)
159
<a name="l00195"></a>00195 {
160
<a name="l00196"></a>00196 *<span class="keyword">this</span> = *<span class="keyword">this</span> | value;
161
<a name="l00197"></a>00197 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
162
<a name="l00198"></a>00198 }
163
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon Jun 11 07:41:37 2007 for Qwt User's Guide by
164
<a href="http://www.doxygen.org/index.html">
165
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.6 </small></address>
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qwt-5.0.2/doc/html/qwt__double__interval_8cpp-source.html
