all of the changes

include/FluidSim/Desktop/DesktopUi.hpp

@@ -0,0 +1,37 @@
+#pragma once
+#include "FluidSim/Scenario.hpp"
+#include "FluidSim/DynoCurve.hpp"
+#include "FluidSim/Desktop/PedalControl.hpp"
+#include "FluidSim/Desktop/EngineRenderer3D.hpp"
+#include <SFML/Graphics.hpp>
+namespace fluidsim::port::desktop {
+struct PlaybackInfo {
+    float pedal_target{},load{};
+    double speed{1};
+    std::size_t buffered{},capacity{};
+    std::uint64_t underruns{};
+    bool auto_gain{},time_warp{};
+};
+struct WorkspaceLayout {
+    sf::FloatRect sidebar,viewport,chart,inspector,pedal;
+    static WorkspaceLayout calculate(sf::Vector2u size);
+};
+class DesktopUi {
+public:
+    float pedal() const {return pedal_.value();}
+    void nudge_pedal(float amount) {pedal_.set(pedal_.value()+amount);}
+    void update_pedal(float dt,bool raise,bool lower) {if(!pedal_drag_)pedal_.advance(dt,raise,lower);}
+    bool handle_event(const sf::Event&,sf::Vector2u);
+    void draw(sf::RenderWindow&,const sf::Font*,const ScenarioSnapshot&,const PlaybackInfo&);
+private:
+    DynoCurve dyno_;
+    EngineRenderer3D renderer_;
+    OrbitCamera camera_;
+    bool three_d_{true},camera_fitted_{},pan_drag_{},pedal_drag_{};
+    PedalControl pedal_;
+    sf::Vector2f pan_{};
+    sf::Vector2i previous_mouse_{};
+    bool dragging_{};
+    float zoom_{1};
+};
+}