Help/Streams-Patterns-Events/Patterns/Ptime.html

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  26 <p class="p1"><span class="s1"><b>Ptime<span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></b></span><b>derive relative time</b></p>
  27 <p class="p2"><br></p>
  28 <p class="p1"><b>superclass: Pattern</b></p>
  29 <p class="p2"><br></p>
  30 <p class="p2"><br></p>
  31 <p class="p1">returns time in beats from moment of embedding in stream</p>
  32 <p class="p2"><br></p>
  33 <p class="p1"><b>Ptime(repeats)</b></p>
  34 <p class="p2"><br></p>
  35 <p class="p2"><br></p>
  36 <p class="p3"><br></p>
  37 <p class="p4">(</p>
  38 <p class="p4">a = <span class="s2">Ptime</span>.new;</p>
  39 <p class="p4">x = a.asStream;</p>
  40 <p class="p4">)</p>
  41 <p class="p5"><br></p>
  42 <p class="p4">x.next;<span class="Apple-converted-space"> </span></p>
  43 <p class="p4">x.next;</p>
  44 <p class="p4">x.next;</p>
  45 <p class="p5"><br></p>
  46 <p class="p6">// post time in a playing event stream</p>
  47 <p class="p4">(</p>
  48 <p class="p7">Pbind<span class="s3">(</span></p>
  49 <p class="p4"><span class="Apple-tab-span">     </span><span class="s4">\pfunc</span>, <span class="s2">Ptime</span>.new.trace,</p>
  50 <p class="p4"><span class="Apple-tab-span">     </span><span class="s4">\dur</span>, <span class="s2">Pseries</span>(0.5, 0.5, 5)</p>
  51 <p class="p4">).play;</p>
  52 <p class="p4">)</p>
  53 <p class="p5"><br></p>
  54 <p class="p5"><br></p>
  55 <p class="p6">// change degree independant of number of events that have been playing</p>
  56 <p class="p5"><br></p>
  57 <p class="p4">(</p>
  58 <p class="p4"><span class="s2">var</span> a, b;</p>
  59 <p class="p4">a = <span class="s2">Pbind</span>(</p>
  60 <p class="p4"><span class="Apple-tab-span">     </span><span class="s4">\degree</span>, <span class="s2">Pswitch</span>(#[0, 2b, 3], <span class="s2">Ptime</span>(8).round(2) / 2),</p>
  61 <p class="p4"><span class="Apple-tab-span">     </span><span class="s4">\dur</span>, <span class="s2">Prand</span>(#[0.2, 0.5, 1.1, 0.25, 0.15], <span class="s2">inf</span>)</p>
  62 <p class="p4">);</p>
  63 <p class="p4">b = <span class="s2">Pbind</span>(</p>
  64 <p class="p4"><span class="Apple-tab-span">     </span><span class="s4">\degree</span>, <span class="s2">Pseq</span>(#[0, 2b, 3], 1),</p>
  65 <p class="p4"><span class="Apple-tab-span">     </span><span class="s4">\dur</span>, 2,</p>
  66 <p class="p8"><span class="s3"><span class="Apple-tab-span">    </span></span>\ctranspose<span class="s3">, -7</span></p>
  67 <p class="p4">);</p>
  68 <p class="p4"><span class="s2">Pseq</span>([<span class="s2">Event</span>.silent(1.25), <span class="s2">Ppar</span>([a, b])], <span class="s2">inf</span>).play;</p>
  69 <p class="p4">)</p>
  70 <p class="p5"><br></p>
  71 <p class="p5"><br></p>
  72 <p class="p5"><br></p>
  73 <p class="p6">// test tempo changes</p>
  74 <p class="p5"><br></p>
  75 <p class="p4">(</p>
  76 <p class="p4"><span class="s2">var</span> a, b;</p>
  77 <p class="p4">a = <span class="s2">Pbind</span>(</p>
  78 <p class="p4"><span class="Apple-tab-span">     </span><span class="s4">\degree</span>, <span class="s2">Pswitch</span>(#[0, 2b, 3], <span class="s2">Ptime</span>(8).round(2) / 2),</p>
  79 <p class="p4"><span class="Apple-tab-span">     </span><span class="s4">\dur</span>, <span class="s2">Prand</span>(#[0.2, 0.5, 1.1, 0.25, 0.15], 9)</p>
  80 <p class="p4">);</p>
  81 <p class="p4">b = <span class="s2">Pbind</span>(</p>
  82 <p class="p4"><span class="Apple-tab-span">     </span><span class="s4">\degree</span>, <span class="s2">Pseq</span>(#[0, 2b, 3], 1),</p>
  83 <p class="p4"><span class="Apple-tab-span">     </span><span class="s4">\dur</span>, 2,</p>
  84 <p class="p8"><span class="s3"><span class="Apple-tab-span">    </span></span>\ctranspose<span class="s3">, -7</span></p>
  85 <p class="p4">);</p>
  86 <p class="p7">Pn<span class="s3">(</span></p>
  87 <p class="p4"><span class="Apple-tab-span">     </span><span class="s2">Pfset</span>({ ~tempo = #[1, 2, 4].choose.postln },<span class="Apple-converted-space"> </span></p>
  88 <p class="p4"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s2">Pseq</span>([</p>
  89 <p class="p4"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s2">Event</span>.silent(1.25),<span class="Apple-converted-space"> </span></p>
  90 <p class="p4"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s2">Ppar</span>([a, b])</p>
  91 <p class="p4"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>])</p>
  92 <p class="p4"><span class="Apple-tab-span">     </span>)</p>
  93 <p class="p4">).play</p>
  94 <p class="p4">)</p>
  95 <p class="p5"><br></p>
  96 <p class="p5"><br></p>
  97 <p class="p5"><br></p>
  98 <p class="p5"><br></p>
  99 <p class="p5"><br></p>
 100 <p class="p5"><br></p>
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