From b2b6c92bd1dc0a1e1b5f4559378d05e3d4285d57 Mon Sep 17 00:00:00 2001
From: David Runge <dave@sleepmap.de>
Date: Mon, 1 May 2017 00:10:18 +0200
Subject: classes/ZZZ.sc: Removing unused classvar zzzSynth. using lincurve and
 curvelin in ampToVAC and vacToAmp (respectively) for the exponential part.
 Adding functions to calculate voltage from frequency and frequency from
 voltage.

---
 classes/ZZZ.sc | 48 +++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 37 insertions(+), 11 deletions(-)

diff --git a/classes/ZZZ.sc b/classes/ZZZ.sc
index a71b1c1..3f39357 100644
--- a/classes/ZZZ.sc
+++ b/classes/ZZZ.sc
@@ -6,8 +6,7 @@ ZZZ{
   < cvMaxADSR = 8.0,
   < cvMinTriggerGateClock = 0.0,
   < cvMaxTriggerGateClock = 5.0,
-  < ampToVACConst = 6.8925,
-  < zzzSynth;
+  < ampToVACConst = 6.8925;
   var <channels;
 
   *new{
@@ -50,11 +49,7 @@ ZZZ{
     if((amplitude <= 1.0), {
       voltage = amplitude * ampToVACConst;
     },{
-      if((amplitude > 2.2), {
-        voltage = 2.2.log + ampToVACConst;
-      },{
-        voltage = amplitude.log + ampToVACConst;
-      });
+      voltage = amplitude.lincurve(1.0, 2.5, ampToVACConst, 7.7, -4, nil);
     });
     voltage.postln;
     ^voltage;
@@ -72,13 +67,44 @@ ZZZ{
     if((voltage <= ampToVACConst), {
       amplitude = voltage/ampToVACConst;
     },{
-      amplitude = (voltage-ampToVACConst).exp;
-      if(amplitude > 2.2, {
-        amplitude = 2.2;
-      });
+      amplitude = voltage.curvelin(ampToVACConst, 7.7, 1.0, 2.5, -4, \max);
     });
     amplitude.postln;
     ^amplitude;
   }
 
+  /**
+   * Calculates voltage for supplied frequency.
+   * Frequencies below 27.5Hz will return 0.
+   * @return voltage for corresponding frequency
+   */
+  *hzToVAC{
+    arg frequency;
+    var voltage;
+    if(frequency < 27.5, {
+      voltage = 0;
+    },{
+      voltage = frequency.explin(55, 880, 1.0, 5.0, nil);
+    });
+    voltage.postln;
+    ^voltage;
+  }
+
+  /**
+   * Calculates frequency for supplied voltage.
+   * Voltages below 0 will return 27.5Hz
+   * @return frequency for corresponding voltage
+   */
+  *vacToHz{
+    arg voltage;
+    var frequency;
+    if(voltage < 0, {
+      frequency = 27.5;
+    },{
+      frequency = voltage.linexp(1.0, 5.0, 55, 880, nil);
+    });
+    frequency.postln;
+    ^frequency;
+  }
+
 }
-- 
cgit v1.2.3-70-g09d2