Help/Libraries/JITLib/nodeproxy/NodeProxy_roles.html

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  42 <p class="p1"><b>Roles in NodeProxy</b></p>
  43 <p class="p2"><br></p>
  44 <p class="p3">Similar to Adverbs (see <a href="../../../Language/J_concepts_in_SC.html"><span class="s1">J Concepts In SC</span></a>), roles allow to specify how a source for a <a href="NodeProxy.html"><span class="s1">NodeProxy</span></a> is being used. A role is an association of a <a href="../../../Core/Symbol.html"><span class="s1">Symbol</span></a> and the new proxy source object.</p>
  45 <p class="p2"><br></p>
  46 <p class="p4"><span class="s2">see also: <a href="NodeProxy.html"><span class="s3">NodeProxy</span></a></span><span class="s3">, <a href="Ndef.html"><span class="s4">Ndef</span></a>, <a href="../environments/ProxySpace.html"><span class="s4">ProxySpace</span></a></span></p>
  47 <p class="p2"><br></p>
  48 <p class="p3">The below examples can equally be used for Ndef and in ProxySpace.</p>
  49 <p class="p5"><br></p>
  50 <p class="p6">// Thus, the following expressions behave in an equivalent way:</p>
  51 <p class="p7"><br></p>
  52 <p class="p8"><span class="s2">a = </span>NodeProxy<span class="s2">(s);</span></p>
  53 <p class="p9">a[0] = ...</p>
  54 <p class="p7"><br></p>
  55 <p class="p8">ProxySpace<span class="s2">.push(s);</span></p>
  56 <p class="p9">~a[0] = ...</p>
  57 <p class="p7"><br></p>
  58 <p class="p9"><span class="s5">Ndef</span>(<span class="s6">\a</span>, ...)<span class="s7"><span class="Apple-converted-space"> </span></span></p>
  59 <p class="p2"><br></p>
  60 <p class="p10"><b>Existing roles:</b></p>
  61 <p class="p2"><br></p>
  62 <p class="p11"><span class="Apple-tab-span">    </span>\<b>set -&gt; event pattern</b>:</p>
  63 <p class="p11"><b><span class="Apple-tab-span"> </span><span class="Apple-tab-span">    </span></b>Set the proxy controls with an event pattern of type \set</p>
  64 <p class="p12"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></p>
  65 <p class="p13"><span class="s8"><span class="Apple-converted-space"> <span class="Apple-tab-span">     </span></span></span>// example:</p>
  66 <p class="p14"><span class="Apple-tab-span">    </span>a = <span class="s9">NodeProxy</span>(s);</p>
  67 <p class="p14"><span class="Apple-tab-span">    </span>a[0] = { <span class="s9">|freq = 440, dt=0.1, rate=2|</span> <span class="s9">Ringz</span>.ar(<span class="s9">Impulse</span>.ar(rate * [1, 1.2]), freq, dt)*0.1 };</p>
  68 <p class="p14"><span class="Apple-tab-span">    </span>a.play;</p>
  69 <p class="p14"><span class="Apple-tab-span">    </span>(</p>
  70 <p class="p14"><span class="Apple-tab-span">    </span>a[1] = <span class="s10">\set</span> -&gt; <span class="s9">Pbind</span>(</p>
  71 <p class="p14"><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><span class="s10">\dur</span>, <span class="s9">Prand</span>([1, 0.5], <span class="s9">inf</span>),<span class="Apple-converted-space"> </span></p>
  72 <p class="p14"><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><span class="s10">\freq</span>, <span class="s9">Pwhite</span>(200.0, 1000, <span class="s9">inf</span>),<span class="Apple-converted-space"> </span></p>
  73 <p class="p14"><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><span class="s10">\rate</span>, <span class="s9">Pstutter</span>(4, <span class="s9">Prand</span>([1, 3, 6, 10], <span class="s9">inf</span>)),</p>
  74 <p class="p14"><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><span class="s10">\dt</span>, <span class="s9">Pwhite</span>(0.01, 0.1, <span class="s9">inf</span>)</p>
  75 <p class="p14"><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>
  76 <p class="p14"><span class="Apple-tab-span">    </span>);</p>
  77 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// modify the source in the meanwhile:</p>
  78 <p class="p14"><span class="Apple-tab-span">    </span>a[0] = { <span class="s9">|freq = 440, dt=0.1, rate=2|</span> <span class="s9">Ringz</span>.ar(<span class="s9">Dust</span>.ar(rate * 10.dup), freq, dt)*0.1 };</p>
  79 <p class="p15"><br></p>
  80 <p class="p14"><span class="Apple-tab-span">    </span>a.clear(3);</p>
  81 <p class="p15"><span class="Apple-tab-span">    </span></p>
  82 <p class="p3"><span class="s11"><span class="Apple-tab-span">   </span></span>\<b>setbus -&gt; event pattern</b>:</p>
  83 <p class="p11"><b><span class="Apple-tab-span"> </span><span class="Apple-tab-span">    </span></b>Set the proxy bus with an event pattern of type \c_set</p>
  84 <p class="p12"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></p>
  85 <p class="p6"><span class="s8"><span class="Apple-converted-space"> <span class="Apple-tab-span">      </span></span></span>// example:</p>
  86 <p class="p9"><span class="Apple-tab-span">     </span>a = <span class="s5">NodeProxy</span>(s);</p>
  87 <p class="p9"><span class="Apple-tab-span">     </span>b = <span class="s5">NodeProxy</span>(s).play;</p>
  88 <p class="p9"><span class="Apple-tab-span">     </span>b[0] = { <span class="s5">SinOsc</span>.ar(a.kr(4)).sum * 0.2 };</p>
  89 <p class="p9"><span class="Apple-tab-span">     </span>(</p>
  90 <p class="p9"><span class="Apple-tab-span">     </span>a[0] = <span class="s6">\setbus</span> -&gt; <span class="s5">Pbind</span>(</p>
  91 <p class="p9"><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><span class="s6">\dur</span>, <span class="s5">Prand</span>([1, 0.5], <span class="s5">inf</span>),<span class="Apple-converted-space"> </span></p>
  92 <p class="p9"><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><span class="s6">\value</span>, <span class="s5">Pfunc</span> { <span class="s5">var</span> z = rrand(300, 4000); [300, 400, z, z + 30.rand2] }</p>
  93 <p class="p9"><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>
  94 <p class="p9"><span class="Apple-tab-span">     </span>);</p>
  95 <p class="p6"><span class="s2"><span class="Apple-tab-span">    </span></span>// modify the other source in the meanwhile:</p>
  96 <p class="p9"><span class="Apple-tab-span">     </span>b[0] = { <span class="s5">Pulse</span>.ar(a.ar(4)).sum * 0.2 };</p>
  97 <p class="p7"><br></p>
  98 <p class="p9"><span class="Apple-tab-span">     </span>a.clear; b.clear;</p>
  99 <p class="p15"><span class="Apple-tab-span">    </span></p>
 100 <p class="p3"><span class="s11"><span class="Apple-tab-span">   </span></span>\<b>setsrc -&gt; event pattern</b>:</p>
 101 <p class="p11"><b><span class="Apple-tab-span"> </span><span class="Apple-tab-span">    </span></b>Set the proxy source at the next index with any object, controlled by a pattern.</p>
 102 <p class="p11"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>Note that any existing source at the next index (in the example below it is index 1) is overridden by the procedure.</p>
 103 <p class="p12"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></p>
 104 <p class="p13"><span class="s8"><span class="Apple-converted-space"> <span class="Apple-tab-span">     </span></span></span>// example:</p>
 105 <p class="p14"><span class="Apple-tab-span">    </span>a = <span class="s9">NodeProxy</span>(s);</p>
 106 <p class="p14"><span class="Apple-tab-span">    </span>a.play;</p>
 107 <p class="p14"><span class="Apple-tab-span">    </span>(</p>
 108 <p class="p9"><span class="Apple-tab-span">     </span>a[0] = <span class="s6">\setsrc</span> -&gt; <span class="s5">Pbind</span>(</p>
 109 <p class="p9"><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><span class="s6">\dur</span>, <span class="s5">Prand</span>([1, 0.5, 2], <span class="s5">inf</span>),<span class="Apple-converted-space"> </span></p>
 110 <p class="p9"><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><span class="s6">\source</span>, <span class="s5">Prand</span> ([</p>
 111 <p class="p9"><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><span class="Apple-tab-span">    </span>{ <span class="s5">SinOsc</span>.ar(<span class="s5">SinOsc</span>.ar({5.rand}.dup + 4) * 50 + 400 + 50.rand) * 0.1 },</p>
 112 <p class="p9"><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><span class="Apple-tab-span">    </span>{ <span class="s5">SinOsc</span>.ar(<span class="s5">LFSaw</span>.ar({5.rand}.dup + 4) * 50 + 400 + 50.rand) * 0.1},</p>
 113 <p class="p9"><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><span class="Apple-tab-span">    </span>{ <span class="s5">LFSaw</span>.ar(<span class="s5">SinOsc</span>.ar({5.rand}.dup + 4) * 50 + 400 + 50.rand) * 0.1 },</p>
 114 <p class="p9"><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><span class="Apple-tab-span">    </span>{ <span class="s5">LFSaw</span>.ar(<span class="s5">LFSaw</span>.ar({5.rand}.dup + 4) * 50 + 400 + 50.rand) * 0.1 }</p>
 115 <p class="p9"><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>], <span class="s5">inf</span>)</p>
 116 <p class="p9"><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>
 117 <p class="p14"><span class="s2"><span class="Apple-tab-span">   </span></span>);</p>
 118 <p class="p15"><br></p>
 119 <p class="p14"><span class="Apple-tab-span">    </span>a.clear(3);</p>
 120 <p class="p12"><span class="Apple-tab-span">    </span></p>
 121 <p class="p11"><span class="Apple-tab-span">    </span>\<b>filter -&gt; function</b>:</p>
 122 <p class="p11"><b><span class="Apple-tab-span"> </span><span class="Apple-tab-span">    </span></b>Filter the audio on the proxy's own bus, using the first argument to pass in the sound.<span class="Apple-converted-space"> </span></p>
 123 <p class="p11"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>The function is any valid UGen function, which may be control or audio rate.</p>
 124 <p class="p11"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>Default controls are wet++index, where <b>index</b> is the slot of the proxy (default 0), in the example below, the control is \wet1.</p>
 125 <p class="p12"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></p>
 126 <p class="p13"><span class="s8"><span class="Apple-converted-space"> <span class="Apple-tab-span">     </span></span></span>// example:</p>
 127 <p class="p14"><span class="Apple-tab-span">    </span>a = <span class="s9">NodeProxy</span>(s);</p>
 128 <p class="p14"><span class="Apple-tab-span">    </span>a[0] = { <span class="s9">PinkNoise</span>.ar(0.1.dup) };</p>
 129 <p class="p14"><span class="Apple-tab-span">    </span>a.play;</p>
 130 <p class="p14"><span class="Apple-tab-span">    </span>a[1] = <span class="s10">\filter</span> -&gt; { <span class="s9">|in|</span> <span class="s9">RLPF</span>.ar(in, <span class="s9">LFNoise2</span>.kr(1).exprange(300, 1000), 0.1) };</p>
 131 <p class="p14"><span class="Apple-tab-span">    </span>a.set(\wet1, 0.2);</p>
 132 <p class="p14"><span class="Apple-tab-span">    </span>a.clear(3);<span class="Apple-converted-space"> </span></p>
 133 <p class="p2"><br></p>
 134 <p class="p3"><span class="s11"><span class="Apple-tab-span">   </span></span>\<b>filterIn -&gt; function</b>:</p>
 135 <p class="p11"><b><span class="Apple-tab-span"> </span><span class="Apple-tab-span">    </span></b>Like \filter, only that the input is controled by the \wet control, not the output.</p>
 136 <p class="p12"><span class="Apple-tab-span">    </span></p>
 137 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// example:</p>
 138 <p class="p14"><span class="Apple-tab-span">    </span>a = <span class="s9">NodeProxy</span>(s);</p>
 139 <p class="p14"><span class="Apple-tab-span">    </span>a[0] = { <span class="s9">PinkNoise</span>.ar(0.1.dup) };</p>
 140 <p class="p14"><span class="Apple-tab-span">    </span>a.play;</p>
 141 <p class="p14"><span class="Apple-tab-span">    </span>a[1] = <span class="s10">\filterIn</span> -&gt; { <span class="s9">|in|</span> <span class="s9">RLPF</span>.ar(in, <span class="s9">LFNoise2</span>.kr(1).exprange(300, 1000), 0.1) };</p>
 142 <p class="p14"><span class="Apple-tab-span">    </span>a.set(\wet1, 0.2);</p>
 143 <p class="p14"><span class="Apple-tab-span">    </span>a.clear(3);<span class="Apple-converted-space"> </span></p>
 144 <p class="p15"><span class="Apple-tab-span">    </span></p>
 145 <p class="p3"><span class="s11"><span class="Apple-tab-span">   </span></span>\<b>filterIn -&gt; mix</b>:</p>
 146 <p class="p11"><b><span class="Apple-tab-span"> </span><span class="Apple-tab-span">    </span></b>Mix in the UGen in the function.</p>
 147 <p class="p12"><span class="Apple-tab-span">    </span></p>
 148 <p class="p13"><span class="s2"><span class="Apple-tab-span">   </span></span>// example:</p>
 149 <p class="p14"><span class="Apple-tab-span">    </span>a = <span class="s9">NodeProxy</span>(s);</p>
 150 <p class="p14"><span class="Apple-tab-span">    </span>a[0] = { <span class="s9">PinkNoise</span>.ar(0.1.dup) };</p>
 151 <p class="p14"><span class="Apple-tab-span">    </span>a.play;</p>
 152 <p class="p14"><span class="Apple-tab-span">    </span>a[1] = <span class="s10">\mix</span> -&gt; { <span class="s9">Dust.ar(30.dup)</span> };</p>
 153 <p class="p14"><span class="Apple-tab-span">    </span>a.set(\mix1, 0.2);</p>
 154 <p class="p14"><span class="Apple-tab-span">    </span>a.clear(3);</p>
 155 <p class="p15"><span class="Apple-tab-span">    </span></p>
 156 <p class="p15"><br></p>
 157 <p class="p10"><b>Adding new roles:</b></p>
 158 <p class="p2"><br></p>
 159 <p class="p3">Roles can be added on the fly. They are kept in a dictionary (<b>buildMethods) </b>in AbstractPlayControl. A second dictionary (<b>proxyControlClasses</b>) provides the wrapper class for a given key.</p>
 160 <p class="p2"><br></p>
 161 <p class="p3">Here is a new role that allows you to set a control rate node proxy with the help of an event pattern. The new values are in a key namd \value.<span class="Apple-converted-space"> </span></p>
 162 <p class="p15"><br></p>
 163 <p class="p15"><br></p>
 164 <p class="p13">// add the new role:</p>
 165 <p class="p14">(</p>
 166 <p class="p16">AbstractPlayControl<span class="s2">.proxyControlClasses.put(</span><span class="s10">\stream</span><span class="s2">, </span>PatternControl<span class="s2">);</span></p>
 167 <p class="p14"><span class="s9">AbstractPlayControl</span>.buildMethods.put(<span class="s10">\stream</span>,<span class="Apple-converted-space"> </span></p>
 168 <p class="p14"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>#{ <span class="s9">arg</span> pattern, proxy, channelOffset=0, index;</p>
 169 <p class="p16"><span class="s2"><span class="Apple-tab-span">   </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></span>Pbindf<span class="s2">(</span></p>
 170 <p class="p14"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>pattern,</p>
 171 <p class="p17"><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>\type<span class="s2">, </span>\bus<span class="s2">,</span></p>
 172 <p class="p14"><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="s10">\id</span>, <span class="s9">Pfunc</span> { proxy.group.nodeID },</p>
 173 <p class="p17"><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>\array<span class="s2">, </span><span class="s9">Pkey</span><span class="s2">(</span>\value<span class="s2">),</span></p>
 174 <p class="p14"><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="s10">\out</span>, <span class="s9">Pfunc</span> { proxy.index }</p>
 175 <p class="p14"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>).buildForProxy( proxy, channelOffset, index )</p>
 176 <p class="p14"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>});</p>
 177 <p class="p14">)</p>
 178 <p class="p15"><br></p>
 179 <p class="p15"><br></p>
 180 <p class="p15"><br></p>
 181 <p class="p13">// test:</p>
 182 <p class="p14">a = <span class="s9">NodeProxy</span>.control(s);</p>
 183 <p class="p14">a.source = <span class="s10">\stream</span> -&gt; <span class="s9">Pbind</span>(<span class="s10">\value</span>, <span class="s9">Pseq</span>([1, 2, 3], <span class="s9">inf</span>), <span class="s10">\dur</span>, 1.5).trace;</p>
 184 <p class="p15"><br></p>
 185 <p class="p16"><span class="s2">b = </span>NodeProxy<span class="s2">(s);</span></p>
 186 <p class="p14">b.source =<span class="Apple-converted-space">  </span>{ <span class="s9">SinOsc</span>.ar([340, 440] * a.kr) * 0.1 };</p>
 187 <p class="p14">b.play;</p>
 188 <p class="p15"><br></p>
 189 <p class="p14">a.source = <span class="s10">\stream</span> -&gt; <span class="s9">Pbind</span>(<span class="s10">\value</span>, <span class="s9">Pseq</span>([1, 2, 3], <span class="s9">inf</span>) + <span class="s9">Pwhite</span>(0.0, 0.2, <span class="s9">inf</span>), <span class="s10">\dur</span>, 0.05);</p>
 190 <p class="p14">b.source =<span class="Apple-converted-space">  </span>{ <span class="s9">SinOsc</span>.ar([5.6, 10.3] ** a.kr + 300) * 0.1 };</p>
 191 <p class="p15"><br></p>
 192 </body>
 193 </html>