Help/Scheduling/AppClock.html

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  28 <p class="p1"><b>AppClock</b></p>
  29 <p class="p2"><br></p>
  30 <p class="p3"><b>superclass: Clock</b></p>
  31 <p class="p4"><br></p>
  32 <p class="p5">SystemClock is more accurate, but cannot call Cocoa primitives.</p>
  33 <p class="p5">AppClock is less accurate (uses NSTimers) but can call Cocoa primitives.</p>
  34 <p class="p4"><br></p>
  35 <p class="p5">You will need to use the SystemClock to get accurate/musical scheduling.</p>
  36 <p class="p6"><br></p>
  37 <p class="p6"><br></p>
  38 <p class="p6"><br></p>
  39 <p class="p5"><b>*sched(delta,task)</b></p>
  40 <p class="p5"><span class="Apple-tab-span">     </span>the float you return specifies the delta to resched the function for</p>
  41 <p class="p6"><br></p>
  42 <p class="p7"><span class="s1"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>AppClock</span>.sched(0.0,{ arg time;<span class="Apple-converted-space"> </span></p>
  43 <p class="p8"><span class="s2"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></span>["AppClock has been playing for ",time]<span class="s2">.postln;<span class="Apple-converted-space"> </span></span></p>
  44 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>rrand(0.1,0.9)<span class="Apple-converted-space"> </span></p>
  45 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>});</p>
  46 <p class="p6"><br></p>
  47 <p class="p5"><span class="Apple-tab-span">     </span>returning <span class="s1">nil</span> will stop the task from being rescheduled</p>
  48 <p class="p6"><br></p>
  49 <p class="p7"><span class="s1"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>AppClock</span>.sched(2.0,{<span class="Apple-converted-space"> </span></p>
  50 <p class="p8"><span class="s2"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></span>"2.0 seconds later"<span class="s2">.postln;<span class="Apple-converted-space"> </span></span></p>
  51 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s1">nil</span><span class="Apple-converted-space"> </span></p>
  52 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>});</p>
  53 <p class="p6"><br></p>
  54 <p class="p5"><b>*clear</b></p>
  55 <p class="p5"><span class="Apple-tab-span">     </span>clear the AppClock's scheduler to stop it</p>
  56 <p class="p9"><br></p>
  57 <p class="p10"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>AppClock<span class="s2">.clear</span></p>
  58 <p class="p6"><br></p>
  59 <p class="p5"><b>*play(task)</b></p>
  60 <p class="p5"><b><span class="Apple-tab-span">  </span></b>The task/Routine yields a float value indicating the delta (secs) for the AppClock to wait</p>
  61 <p class="p5"><span class="Apple-tab-span">     </span>until resuming the Routine.</p>
  62 <p class="p6"><br></p>
  63 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>(</p>
  64 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s3">var</span> w, r;</p>
  65 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>w = <span class="s3">Window</span>.new(<span class="s4">"trem"</span>, <span class="s3">Rect</span>(512, 256, 360, 130));</p>
  66 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>w.front;</p>
  67 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>r = <span class="s3">Routine</span>({ <span class="s3">arg</span> appClockTime;</p>
  68 <p class="p8"><span class="s2"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>[</span>"AppClock has been playing for secs:"<span class="s2">,appClockTime].postln;</span></p>
  69 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>60.do({ <span class="s3">arg</span> i;</p>
  70 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>0.05.yield;</p>
  71 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>w.bounds = w.bounds.moveBy(10.rand2, 10.rand2);</p>
  72 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>w.alpha = cos(i*0.1pi)*0.5+0.5;</p>
  73 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>});</p>
  74 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>1.yield;</p>
  75 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>w.close;</p>
  76 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>});</p>
  77 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s3">AppClock</span>.play(r);</p>
  78 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>)</p>
  79 <p class="p6"><span class="Apple-tab-span">     </span></p>
  80 <p class="p5"><b>*tick</b></p>
  81 <p class="p5"><span class="Apple-tab-span">     </span>AppClock.tick is called periodically by the SuperCollider application itself.</p>
  82 <p class="p5"><span class="Apple-tab-span">     </span>This updates the Scheduler and causes any scheduled tasks to be executed.<span class="Apple-converted-space">  </span>You</p>
  83 <p class="p5"><span class="Apple-tab-span">     </span>should never call this method yourself.</p>
  84 <p class="p4"><br></p>
  85 <p class="p4"><br></p>
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