qwt__double__interval_8cpp-source.html

QWT5.01用于Qt开发的二维图形库程序

<a name="l00092"></a>00092     <span class="keywordflow">if</span> ( i1.<a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a>() &gt; i2.<a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a>() )
<a name="l00093"></a>00093         qSwap(i1, i2);
<a name="l00094"></a>00094 
<a name="l00095"></a>00095     <span class="keywordflow">if</span> ( i1.<a class="code" href="class_qwt_double_interval.html#8fd8629d76f24d5494e59458cd79c4e2">maxValue</a>() &lt; i2.<a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a>() )
<a name="l00096"></a>00096         <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>();
<a name="l00097"></a>00097 
<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>(), 
<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>()));
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101 
<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>&amp; <a class="code" href="class_qwt_double_interval.html#08451058f63dd6b4f8e5a23ba955454a">QwtDoubleInterval::operator|=</a>(
<a name="l00103"></a>00103     <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> &amp;interval)
<a name="l00104"></a>00104 {
<a name="l00105"></a>00105     *<span class="keyword">this</span> = *<span class="keyword">this</span> | interval;
<a name="l00106"></a>00106     <span class="keywordflow">return</span> *<span class="keyword">this</span>;
<a name="l00107"></a>00107 }
<a name="l00108"></a>00108 
<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>&amp; <a class="code" href="class_qwt_double_interval.html#7faf407a4d6fcfbd15e7d1c425293908">QwtDoubleInterval::operator&amp;=</a>(
<a name="l00110"></a>00110     <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> &amp;interval) 
<a name="l00111"></a>00111 {
<a name="l00112"></a>00112     *<span class="keyword">this</span> = *<span class="keyword">this</span> &amp; interval;
<a name="l00113"></a>00113     <span class="keywordflow">return</span> *<span class="keyword">this</span>;
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115 
<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> &amp;interval)<span class="keyword"> const</span>
<a name="l00120"></a>00120 <span class="keyword"></span>{
<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>() )
<a name="l00122"></a>00122         <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00123"></a>00123 
<a name="l00124"></a>00124     <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> i1 = *<span class="keyword">this</span>;
<a name="l00125"></a>00125     <a class="code" href="class_qwt_double_interval.html">QwtDoubleInterval</a> i2 = interval;
<a name="l00126"></a>00126 
<a name="l00127"></a>00127     <span class="keywordflow">if</span> ( i1.<a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a>() &gt; i2.<a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a>() )
<a name="l00128"></a>00128         qSwap(i1, i2);
<a name="l00129"></a>00129 
<a name="l00130"></a>00130     <span class="keywordflow">return</span> i1.<a class="code" href="class_qwt_double_interval.html#8fd8629d76f24d5494e59458cd79c4e2">maxValue</a>() &gt;= i2.<a class="code" href="class_qwt_double_interval.html#2d7d56e81ee75911f176c94f6aaf4b8b">minValue</a>();
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132 
<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>
<a name="l00141"></a>00141 <span class="keyword"></span>{
<a name="l00142"></a>00142     <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() )
<a name="l00143"></a>00143         <span class="keywordflow">return</span> *<span class="keyword">this</span>;
<a name="l00144"></a>00144 
<a name="l00145"></a>00145     <span class="keyword">const</span> <span class="keywordtype">double</span> delta =
<a name="l00146"></a>00146         qwtMax(qwtAbs(value - d_maxValue), qwtAbs(value - d_minValue));
<a name="l00147"></a>00147 
<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);
<a name="l00149"></a>00149 }
<a name="l00150"></a>00150 
<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>(
<a name="l00160"></a>00160     <span class="keywordtype">double</span> lBound, <span class="keywordtype">double</span> hBound)<span class="keyword"> const</span>
<a name="l00161"></a>00161 <span class="keyword"></span>{
<a name="l00162"></a>00162     <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() || lBound &gt; hBound )
<a name="l00163"></a>00163         <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>();
<a name="l00164"></a>00164 
<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);
<a name="l00166"></a>00166     minValue = qwtMin(minValue, hBound);
<a name="l00167"></a>00167 
<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);
<a name="l00169"></a>00169     maxValue = qwtMin(maxValue, hBound);
<a name="l00170"></a>00170 
<a name="l00171"></a>00171     <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>(minValue, maxValue);
<a name="l00172"></a>00172 }
<a name="l00173"></a>00173 
<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>
<a name="l00186"></a>00186 <span class="keyword"></span>{
<a name="l00187"></a>00187     <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_double_interval.html#311402213e243b809008faaec00507d5">isValid</a>() )
<a name="l00188"></a>00188         <span class="keywordflow">return</span> *<span class="keyword">this</span>;
<a name="l00189"></a>00189 
<a name="l00190"></a>00190     <span class="keywordflow">return</span> <a class="code" href="class_qwt_double_interval.html#d07ae136fc65e6ad566b482274705cf2">QwtDoubleInterval</a>(
<a name="l00191"></a>00191         qwtMin(value, d_minValue), qwtMax(value, d_maxValue) );
<a name="l00192"></a>00192 }
<a name="l00193"></a>00193 
<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>&amp; <a class="code" href="class_qwt_double_interval.html#08451058f63dd6b4f8e5a23ba955454a">QwtDoubleInterval::operator|=</a>(<span class="keywordtype">double</span> value)
<a name="l00195"></a>00195 {
<a name="l00196"></a>00196     *<span class="keyword">this</span> = *<span class="keyword">this</span> | value;
<a name="l00197"></a>00197     <span class="keywordflow">return</span> *<span class="keyword">this</span>;
<a name="l00198"></a>00198 }
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon Feb 26 21:22:36 2007 for Qwt User's Guide by&nbsp;
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.6 </small></address>
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