feat: add oscillator button

inc/Renderer.h

@@ -8,17 +8,18 @@ class Renderer
 {
 private:
     void DrawMainPanel(const Rectangle& panel_bounds);
+    void DrawAddOscillatorButton(Synth & synth, SynthGuiState & synthGui, Rectangle panel_bounds);
     void DrawOscillatorsPanels(const std::vector<Oscillator*>& oscillators, 
         const std::vector<OscillatorGuiState*>& guiOscillators,
         const Rectangle& panel_bounds);
     void DrawOscillatorsShapeInputs(const std::vector<Oscillator*>& oscillators, 
         const std::vector<OscillatorGuiState*>& guiOscillators);
-    void DrawUi(Synth & synth, const SynthGuiState & synthGui);
+    void DrawUi(Synth & synth, SynthGuiState & synthGui);
-    void DrawSignal(Synth & synth, const SynthGuiState & synthGui);
+    void DrawSignal(Synth & synth, SynthGuiState & synthGui);
 public:
     Renderer(/* args */);
     ~Renderer();
-    void Draw(Synth& synth, const SynthGuiState & synthGui);
+    void Draw(Synth& synth, SynthGuiState & synthGui);
 };
 
 

inc/Synth.h

@@ -20,6 +20,7 @@ public:
     Synth(/* args */);
     ~Synth();
     void ProduceNoteSound(Note input);
+    void AddOscillator();
     const std::vector<float> & GetOutSignal() { return m_out_signal; }
     const std::vector<Oscillator*>& GetOscillators() { return m_oscillators; }
 };

src/Renderer.cpp

@@ -14,7 +14,7 @@ Renderer::~Renderer()
 {
 }
 
-void Renderer::Draw(Synth& synth, const SynthGuiState& synthGui)
+void Renderer::Draw(Synth& synth, SynthGuiState& synthGui)
 {
     BeginDrawing();
 
@@ -28,7 +28,7 @@ void Renderer::Draw(Synth& synth, const SynthGuiState& synthGui)
     EndDrawing();
 }
 
-void Renderer::DrawSignal(Synth & synth, const SynthGuiState & synthGui) 
+void Renderer::DrawSignal(Synth & synth, SynthGuiState & synthGui) 
 {
     GuiGrid((Rectangle){0, 0, WINDOW_WIDTH, WINDOW_HEIGHT}, "", WINDOW_HEIGHT / 8, 2);
     auto signal = synth.GetOutSignal();
@@ -158,8 +158,10 @@ void Renderer::DrawMainPanel(const Rectangle& panel_bounds)
     bool is_shape_dropdown_open = false;
     int shape_index = 0;
     GuiPanel(panel_bounds, "");
+}
 
-    /**/
+void Renderer::DrawAddOscillatorButton(Synth & synth, SynthGuiState & synthGui, Rectangle panel_bounds)
+{
     bool click_add_oscillator = GuiButton((Rectangle){
                                               panel_bounds.x + 10,
                                               panel_bounds.y + 10,
@@ -168,24 +170,27 @@ void Renderer::DrawMainPanel(const Rectangle& panel_bounds)
                                           }, "Add Oscillator");
     if (click_add_oscillator)
     {
-        // synth->ui_oscillator_count += 1;
+        synth.AddOscillator();
-        // // Set defaults:
+        Oscillator* osc = synth.GetOscillators().back();
-        // UiOscillator *ui_osc = synth->ui_oscillator + (synth->ui_oscillator_count - 1);
-        // ui_osc->shape = WaveShape_SINE;
-        // ui_osc->freq = BASE_NOTE_FREQ;
-        // ui_osc->amplitude_ratio = 0.1f;
-        // ui_osc->shape_parameter_0 = 0.5f;
-    }
-}
 
-void Renderer::DrawUi(Synth & synth, const SynthGuiState & synthGui)
+        OscillatorGuiState* ui = new OscillatorGuiState {
+            .freq = osc->GetFreq(),
+            .waveshape = osc->GetType(),
+            .volume = osc->GetVolume()
+        };
+        synthGui.oscillators.push_back(ui);
+    }
+} 
+
+void Renderer::DrawUi(Synth & synth, SynthGuiState & synthGui)
 {
     Rectangle panel_bounds = {.x = 0, .y = 0, .width = OSCILLATOR_PANEL_WIDTH, .height = WINDOW_HEIGHT };
     DrawMainPanel(panel_bounds);
-    
+    DrawAddOscillatorButton(synth, synthGui, panel_bounds);
     // Draw Oscillators
     std::vector<Oscillator*> oscillators = synth.GetOscillators();
     std::vector<OscillatorGuiState*> guiOscillators = synthGui.oscillators;
+
     DrawOscillatorsPanels(oscillators, guiOscillators, panel_bounds);
     DrawOscillatorsShapeInputs(oscillators, guiOscillators);
 }

src/Synth.cpp

@@ -5,7 +5,7 @@
 
 Synth::Synth(/* args */)
 {
-    m_oscillators.push_back(new Oscillator(OscillatorType::Sine, 440.f, VOLUME));
+    AddOscillator();
 }
 
 Synth::~Synth()
@@ -26,8 +26,14 @@ std::vector<float> & Synth::get_note(int semitone, float beats)
     return m_adder.SumOscillators(m_oscillators, duration); //todo: add other pipeline steps (e.g ADSR, Filters, FX);
 }
 
-void Synth::ProduceNoteSound(Note input) {
+void Synth::ProduceNoteSound(Note input) 
+{
     float length = 1.f / input.length;
     int semitone_shift = KeyBoard::GetSemitoneShift(input.name);
     m_out_signal = get_note(semitone_shift, length);
 }
+
+void Synth::AddOscillator()
+{
+    m_oscillators.push_back(new Oscillator(OscillatorType::Sine, 440.f, VOLUME));
+}