inc/Application.h

@@ -4,10 +4,13 @@
 #include "raylib.h"
 #include "RingBuffer.h"
 #include "Renderer.h"
+#include "SynthGuiState.h"
+
 class Application
 {
 private:
     Synth m_synth;
+    SynthGuiState m_synth_gui_state;
     RingBuffer<float>* m_ring_buffer;
     AudioStream m_synth_stream;
     int m_sound_played_count;

inc/Renderer.h

@@ -1,13 +1,15 @@
 #pragma once
-
+#include "Synth.h"
+#include "SynthGuiState.h"
 class Renderer
 {
 private:
-    /* data */
+    void DrawUi(Synth & synth, const SynthGuiState & synthGui);
+    void DrawSignal(Synth & synth, const SynthGuiState & synthGui);
 public:
     Renderer(/* args */);
     ~Renderer();
-    void Draw();
+    void Draw(Synth& synth, const SynthGuiState & synthGui);
 };
 
 

inc/Synth.h

@@ -21,4 +21,5 @@ public:
     ~Synth();
     void ProduceNoteSound(Note input);
     const std::vector<float> & GetOutSignal() { return m_out_signal; }
+    const std::vector<Oscillator*>& GetOscillators() { return m_oscillators; }
 };

inc/SynthGuiState.h

@@ -0,0 +1,16 @@
+#pragma once
+#include "OscillatorType.h"
+#include "raygui.h"
+#include <vector>
+
+struct OscillatorGuiState {
+    float volume;
+    float freq;//todo: remove or change to pitch shift
+    OscillatorType waveshape;
+    bool is_dropdown_open;
+    Rectangle shape_dropdown_rect;
+};
+
+struct SynthGuiState {
+    std::vector<OscillatorGuiState> oscillators;
+};

src/Application.cpp

@@ -45,16 +45,20 @@ void Application::init_synth()
     };
 
     //todo: move somewhere in initialization
-    // synth.ui_oscillators = malloc(sizeof(OscillatorUI) * synth.oscillators.count);
+    std::vector<Oscillator*> oscillators = m_synth.GetOscillators();
-    // for (size_t i = 0; i < synth.oscillators.count; i++)
+    m_synth_gui_state.oscillators.reserve(oscillators.size());
-    // {
+    for (size_t i = 0; i < oscillators.size(); i++)
-    //     OscillatorUI* ui = &synth.ui_oscillators[i];
+    {
-    //     assert(ui);
+        Oscillator* osc = oscillators[i];
+        assert(osc);
 
-    //     ui->freq = synth.oscillators.array[i].freq;
+        OscillatorGuiState ui = {
-    //     ui->waveshape = synth.oscillators.array[i].osc;
+            .freq = osc->GetFreq(),
-    //     ui->volume = synth.oscillators.array[i].volume;
+            .waveshape = osc->GetType(),
-    // }
+            .volume = osc->GetVolume()
+        };
+        m_synth_gui_state.oscillators.push_back(ui);
+    }
 }
 
 std::size_t Application::detect_note_pressed(Note* note) 
@@ -171,6 +175,6 @@ void Application::Run()
         play_buffered_audio();
         update_on_note_input();
 
-        m_renderer.Draw();
+        m_renderer.Draw(m_synth, m_synth_gui_state);
     }
 }

src/Renderer.cpp

@@ -1,5 +1,6 @@
 #include "Renderer.h"
 #include "raylib.h"
+#define RAYGUI_IMPLEMENTATION
 #include "raygui.h"
 #include "Settings.h"
 
@@ -13,16 +14,36 @@ Renderer::~Renderer()
 {
 }
 
-void Renderer::Draw()
+void Renderer::Draw(Synth& synth, const SynthGuiState& synthGui)
 {
     BeginDrawing();
 
         ClearBackground(RAYWHITE);
         //todo: implement renderer
-        //DrawUi(&synth);
+        DrawUi(synth, synthGui);
-        //DrawSignal(&synth);
+        DrawSignal(synth, synthGui);
         //DrawText("Congrats! You created your first window!", 190, 200, 20, LIGHTGRAY);
         //DrawFPS(0,0);
 
     EndDrawing();
 }
+
+void Renderer::DrawSignal(Synth & synth, const SynthGuiState & synthGui) 
+{
+    GuiGrid((Rectangle){0, 0, WINDOW_WIDTH, WINDOW_HEIGHT}, "", WINDOW_HEIGHT / 8, 2);
+    auto signal = synth.GetOutSignal();
+    Vector2* signal_points = new Vector2[signal.size()];
+    const float screen_vertical_midpoint = (WINDOW_HEIGHT/2);
+    for (int point_idx = 0; point_idx < signal.size(); point_idx++)
+    {
+        signal_points[point_idx].x = (float)point_idx + OSCILLATOR_PANEL_WIDTH;
+        signal_points[point_idx].y = screen_vertical_midpoint + (int)(signal[point_idx] * 300);
+    }
+    DrawLineStrip(signal_points, signal.size(), RED);
+    delete[] signal_points;
+}
+
+void Renderer::DrawUi(Synth & synth, const SynthGuiState & synthGui)
+{
+
+}