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wehub-resource-sync e7ae061fa2 chore: import upstream snapshot with attribution
2026-07-13 12:36:49 +08:00

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<li class="navelem"><b>sf</b></li><li class="navelem"><a class="el" href="classsf_1_1Clock.html">Clock</a></li> </ul>
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<a href="#pub-methods">Public Member Functions</a> &#124;
<a href="classsf_1_1Clock-members.html">List of all members</a> </div>
<div class="headertitle"><div class="title">sf::Clock Class Reference<div class="ingroups"><a class="el" href="group__system.html">System module</a></div></div></div>
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<p>Utility class that measures the elapsed time.
<a href="classsf_1_1Clock.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="Clock_8hpp_source.html">SFML/System/Clock.hpp</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="pub-methods" name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:abbc959c7830ca7c3a4da133cb506d3fd"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsf_1_1Clock.html#abbc959c7830ca7c3a4da133cb506d3fd">Clock</a> ()</td></tr>
<tr class="memdesc:abbc959c7830ca7c3a4da133cb506d3fd"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default constructor. <br /></td></tr>
<tr class="separator:abbc959c7830ca7c3a4da133cb506d3fd"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:abe889b42a65bcd8eefc16419645d08a7"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classsf_1_1Time.html">Time</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsf_1_1Clock.html#abe889b42a65bcd8eefc16419645d08a7">getElapsedTime</a> () const</td></tr>
<tr class="memdesc:abe889b42a65bcd8eefc16419645d08a7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the elapsed time. <br /></td></tr>
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<tr class="memitem:a123e2627f2943e5ecaa1db0c7df3231b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classsf_1_1Time.html">Time</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classsf_1_1Clock.html#a123e2627f2943e5ecaa1db0c7df3231b">restart</a> ()</td></tr>
<tr class="memdesc:a123e2627f2943e5ecaa1db0c7df3231b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Restart the clock. <br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Utility class that measures the elapsed time. </p>
<p><a class="el" href="classsf_1_1Clock.html" title="Utility class that measures the elapsed time.">sf::Clock</a> is a lightweight class for measuring time.</p>
<p>Its provides the most precise time that the underlying OS can achieve (generally microseconds or nanoseconds). It also ensures monotonicity, which means that the returned time can never go backward, even if the system time is changed.</p>
<p>Usage example: </p><div class="fragment"><div class="line"><a class="code hl_class" href="classsf_1_1Clock.html">sf::Clock</a> clock;</div>
<div class="line">...</div>
<div class="line">Time time1 = clock.<a class="code hl_function" href="classsf_1_1Clock.html#abe889b42a65bcd8eefc16419645d08a7">getElapsedTime</a>();</div>
<div class="line">...</div>
<div class="line"><a class="code hl_function" href="classsf_1_1Time.html#acba0cfbc49e3a09a22a8e079eb67a05c">Time</a> time2 = clock.<a class="code hl_function" href="classsf_1_1Clock.html#a123e2627f2943e5ecaa1db0c7df3231b">restart</a>();</div>
<div class="ttc" id="aclasssf_1_1Clock_html"><div class="ttname"><a href="classsf_1_1Clock.html">sf::Clock</a></div><div class="ttdoc">Utility class that measures the elapsed time.</div><div class="ttdef"><b>Definition:</b> <a href="Clock_8hpp_source.html#l00041">Clock.hpp:42</a></div></div>
<div class="ttc" id="aclasssf_1_1Clock_html_a123e2627f2943e5ecaa1db0c7df3231b"><div class="ttname"><a href="classsf_1_1Clock.html#a123e2627f2943e5ecaa1db0c7df3231b">sf::Clock::restart</a></div><div class="ttdeci">Time restart()</div><div class="ttdoc">Restart the clock.</div></div>
<div class="ttc" id="aclasssf_1_1Clock_html_abe889b42a65bcd8eefc16419645d08a7"><div class="ttname"><a href="classsf_1_1Clock.html#abe889b42a65bcd8eefc16419645d08a7">sf::Clock::getElapsedTime</a></div><div class="ttdeci">Time getElapsedTime() const</div><div class="ttdoc">Get the elapsed time.</div></div>
<div class="ttc" id="aclasssf_1_1Time_html_acba0cfbc49e3a09a22a8e079eb67a05c"><div class="ttname"><a href="classsf_1_1Time.html#acba0cfbc49e3a09a22a8e079eb67a05c">sf::Time::Time</a></div><div class="ttdeci">Time()</div><div class="ttdoc">Default constructor.</div></div>
</div><!-- fragment --><p>The <a class="el" href="classsf_1_1Time.html" title="Represents a time value.">sf::Time</a> value returned by the clock can then be converted to a number of seconds, milliseconds or even microseconds.</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classsf_1_1Time.html" title="Represents a time value.">sf::Time</a> </dd></dl>
<p class="definition">Definition at line <a class="el" href="Clock_8hpp_source.html#l00041">41</a> of file <a class="el" href="Clock_8hpp_source.html">Clock.hpp</a>.</p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="abbc959c7830ca7c3a4da133cb506d3fd" name="abbc959c7830ca7c3a4da133cb506d3fd"></a>
<h2 class="memtitle"><span class="permalink"><a href="#abbc959c7830ca7c3a4da133cb506d3fd">&#9670;&#160;</a></span>Clock()</h2>
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<td class="memname">sf::Clock::Clock </td>
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<p>Default constructor. </p>
<p>The clock starts automatically after being constructed. </p>
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<h2 class="groupheader">Member Function Documentation</h2>
<a id="abe889b42a65bcd8eefc16419645d08a7" name="abe889b42a65bcd8eefc16419645d08a7"></a>
<h2 class="memtitle"><span class="permalink"><a href="#abe889b42a65bcd8eefc16419645d08a7">&#9670;&#160;</a></span>getElapsedTime()</h2>
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<td class="memname"><a class="el" href="classsf_1_1Time.html">Time</a> sf::Clock::getElapsedTime </td>
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<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>Get the elapsed time. </p>
<p>This function returns the time elapsed since the last call to <a class="el" href="classsf_1_1Clock.html#a123e2627f2943e5ecaa1db0c7df3231b" title="Restart the clock.">restart()</a> (or the construction of the instance if <a class="el" href="classsf_1_1Clock.html#a123e2627f2943e5ecaa1db0c7df3231b" title="Restart the clock.">restart()</a> has not been called).</p>
<dl class="section return"><dt>Returns</dt><dd><a class="el" href="classsf_1_1Time.html" title="Represents a time value.">Time</a> elapsed </dd></dl>
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<a id="a123e2627f2943e5ecaa1db0c7df3231b" name="a123e2627f2943e5ecaa1db0c7df3231b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a123e2627f2943e5ecaa1db0c7df3231b">&#9670;&#160;</a></span>restart()</h2>
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<td class="memname"><a class="el" href="classsf_1_1Time.html">Time</a> sf::Clock::restart </td>
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<p>Restart the clock. </p>
<p>This function puts the time counter back to zero. It also returns the time elapsed since the clock was started.</p>
<dl class="section return"><dt>Returns</dt><dd><a class="el" href="classsf_1_1Time.html" title="Represents a time value.">Time</a> elapsed </dd></dl>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="Clock_8hpp_source.html">Clock.hpp</a></li>
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