1 files changed, 71 insertions, 0 deletions
diff --git a/src/CircleVCO.cpp b/src/CircleVCO.cpp
new file mode 100644
index 0000000..849d1e4
--- /dev/null
+++ b/src/CircleVCO.cpp
@@ -0,0 +1,71 @@
+#include "s-ol.hpp"
+
+struct CircleVCO : Module {
+  enum ParamIds {
+    PITCH_PARAM,
+    NUM_PARAMS
+  };
+  enum InputIds {
+    PITCH_INPUT,
+    NUM_INPUTS
+  };
+  enum OutputIds {
+    SIN_OUTPUT,
+    COS_OUTPUT,
+    PHS_OUTPUT,
+    NUM_OUTPUTS
+  };
+  enum LightIds {
+    NUM_LIGHTS
+  };
+
+  float phase = 0.0;
+
+  CircleVCO() : Module(NUM_PARAMS, NUM_INPUTS, NUM_OUTPUTS, NUM_LIGHTS) {}
+  void step() override;
+};
+
+
+void CircleVCO::step() {
+  float deltaTime = 1.0 / engineGetSampleRate();
+
+  float pitch = params[PITCH_PARAM].value;
+  pitch += inputs[PITCH_INPUT].value;
+  pitch = clampf(pitch, -4.0, 4.0);
+  float freq = 200 * (powf(2.0, pitch) - powf(2.0, -4.0));
+
+  phase += freq * deltaTime;
+  while (phase >= 1.0)
+    phase -= 1.0;
+
+  float sine = sinf(2 * M_PI * phase);
+  float cosn = cosf(2 * M_PI * phase);
+  outputs[SIN_OUTPUT].value = sine * 5;
+  outputs[COS_OUTPUT].value = cosn * 5;
+  outputs[PHS_OUTPUT].value = phase * 5;
+}
+
+
+CircleVCOWidget::CircleVCOWidget() {
+  CircleVCO *module = new CircleVCO();
+  setModule(module);
+  setPanel(SVG::load(assetPlugin(plugin, "res/CircleVCO.svg")));
+
+  addChild(createScrew<ScrewSilver>(Vec(RACK_GRID_WIDTH, 0)));
+  addChild(createScrew<ScrewSilver>(Vec(box.size.x - 2 * RACK_GRID_WIDTH, 0)));
+  addChild(createScrew<ScrewSilver>(Vec(RACK_GRID_WIDTH, RACK_GRID_HEIGHT - RACK_GRID_WIDTH)));
+  addChild(createScrew<ScrewSilver>(Vec(box.size.x - 2 * RACK_GRID_WIDTH, RACK_GRID_HEIGHT - RACK_GRID_WIDTH)));
+
+  PJ301MPort p;
+  Davies1900hBlackKnob k;
+  Vec center = Vec(box.size.x, 0).minus(p.box.size).div(2);
+  Vec kcenter = Vec(box.size.x, 0).minus(k.box.size).div(2);
+
+  addParam(createParam<Davies1900hBlackKnob>(kcenter.plus(Vec(0, 90)), module, CircleVCO::PITCH_PARAM, 0.0, 1.0, 0.0));
+
+  addInput(createInput<PJ301MPort>(center.plus(Vec(0, 180)), module, CircleVCO::PITCH_INPUT));
+
+  addOutput(createOutput<PJ301MPort>(center.plus(Vec(-18, 250)), module, CircleVCO::SIN_OUTPUT));
+  addOutput(createOutput<PJ301MPort>(center.plus(Vec( 18, 250)), module, CircleVCO::COS_OUTPUT));
+  addOutput(createOutput<PJ301MPort>(center.plus(Vec(0, 315)), module, CircleVCO::PHS_OUTPUT));
+}