Rack/plugins/community/repos/AS/src/SineOSC.cpp

//**************************************************************************************
//SineOSC module for VCV Rack by Alfredo Santamaria - AS - https://github.com/AScustomWorks/AS
//Is just the tutorial module and nothing else hehe
//
//Code taken from the Fundamentals plugins by Andrew Belt http://www.vcvrack.com
//**************************************************************************************
#include "AS.hpp"

struct SineOsc : Module {
	enum ParamIds {
		FREQ_PARAM,
		BASE_PARAM,
		NUM_PARAMS
	};
	enum InputIds {
		FREQ_CV,
		NUM_INPUTS
	};
	enum OutputIds {
		OSC_OUTPUT,
		TRI_OUTPUT,
		NUM_OUTPUTS
	};
	enum LightIds {
		FREQ_LIGHT,
		NUM_LIGHTS
	};

	float phase = 0.0f;
	float blinkPhase = 0.0f;
	float freq = 0.0f;
	int base_freq = 0;

	SineOsc() : Module(NUM_PARAMS, NUM_INPUTS, NUM_OUTPUTS, NUM_LIGHTS) {}
	void step() override;
};


void SineOsc::step() {
	// Implement a simple sine oscillator
	// Compute the frequency from the pitch parameter and input
	base_freq = params[BASE_PARAM].value;
	float pitch = params[FREQ_PARAM].value;
	pitch += inputs[FREQ_CV].value;
	pitch = clamp(pitch, -4.0f, 4.0f);

	if(base_freq==1){
		//Note A4
		freq = 440.0f * powf(2.0f, pitch);
	}else{
		// Note C4
		freq = 261.626f * powf(2.0f, pitch);
	}
	// Accumulate the phase
	phase += freq / engineGetSampleRate();
	if (phase >= 1.0f)
		phase -= 1.0f;
	// Compute the sine output
	//correct sine
	float sine = sinf(2.0f * M_PI * (phase+1 * 0.125f)) * 5.0f;
	//original sine
	//float sine = sinf(2 * M_PI * phase)+ sinf(2 * M_PI * phase * 2)*5;
	//mod,like this it gives  a unipolar saw-ish wave
	//float sine = sinf(2.0 * M_PI * (phase * 0.125)) * 5.0;

	outputs[OSC_OUTPUT].value = sine;
    lights[FREQ_LIGHT].value = (outputs[OSC_OUTPUT].value > 0.0f) ? 1.0f : 0.0f;

}

struct SineOscWidget : ModuleWidget 
{ 
    SineOscWidget(SineOsc *module);
};


SineOscWidget::SineOscWidget(SineOsc *module) : ModuleWidget(module) {

  setPanel(SVG::load(assetPlugin(plugin, "res/SineOSC.svg")));
  
	//SCREWS - SPECIAL SPACING FOR RACK WIDTH*4
	addChild(Widget::create<as_HexScrew>(Vec(0, 0)));
	addChild(Widget::create<as_HexScrew>(Vec(box.size.x - RACK_GRID_WIDTH, 0)));
	addChild(Widget::create<as_HexScrew>(Vec(0, RACK_GRID_HEIGHT - RACK_GRID_WIDTH)));
	addChild(Widget::create<as_HexScrew>(Vec(box.size.x - RACK_GRID_WIDTH, RACK_GRID_HEIGHT - RACK_GRID_WIDTH)));
	//LIGHT
	addChild(ModuleLightWidget::create<SmallLight<RedLight>>(Vec(22-15, 57), module, SineOsc::FREQ_LIGHT));
	//PARAMS
	//addParam(ParamWidget::create<as_KnobBlack>(Vec(26-15, 60), module, SineOsc::FREQ_PARAM, -3.75f, 3.75f, -0.75f));
	//addParam(ParamWidget::create<as_KnobBlack>(Vec(26-15, 60), module, SineOsc::FREQ_PARAM, -3.0f, 2.999934f, -0.000066f));
	addParam(ParamWidget::create<as_KnobBlack>(Vec(26-15, 60), module, SineOsc::FREQ_PARAM, -3.0f, 3.0f, 0.0f));

	//BASE FREQ SWITCH
	addParam(ParamWidget::create<as_CKSSH>(Vec(18, 220), module, SineOsc::BASE_PARAM, 0.0f, 1.0f, 1.0f));
	//INPUTS
	addInput(Port::create<as_PJ301MPort>(Vec(33-15, 260), Port::INPUT, module, SineOsc::FREQ_CV));
	//OUTPUTS
	addOutput(Port::create<as_PJ301MPort>(Vec(33-15, 310), Port::OUTPUT, module, SineOsc::OSC_OUTPUT));
	
}

RACK_PLUGIN_MODEL_INIT(AS, SineOsc) {
   Model *modelSineOsc = Model::create<SineOsc, SineOscWidget>("AS", "SineOSC", "TinySine", OSCILLATOR_TAG);
   return modelSineOsc;
}