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+
+#include <mingfx.h>
+
+
+/** An application that opens up a window that includes a few buttons
+ for controlling the simulation and can be used to draw circles and
+ other computer graphics.
+
+ After constructing a new CircleViewer, call Run() to start and
+ run the application. Run() will not return until the application
+ window is closed. Make sure that you call cs3081::InitGraphics()
+ before creating the RobotViewer app. Example:
+
+ ```
+ int main(int argc, char **argv) {
+ cs3081::InitGraphics();
+ cs3081::CircleViewer *app = new cs3081::CircleViewer();
+ app->Run();
+ cs3081::ShutdownGraphics();
+ return 0;
+ }
+ ```
+
+ While the window is open UpdateSimulation() will be called
+ repeatedly, once per frame. Fill this in to update your simulation
+ or perform any other processing that should happen over time as the
+ simulation progresses.
+
+ Fill in the On*() methods as desired to respond to user input events.
+
+ Fill in the Draw*() methods to draw graphics to the screen using
+ either the nanovg library or raw OpenGL.
+*/
+class CircleViewer : public GraphicsApp {
+public:
+ CircleViewer();
+ ~CircleViewer();
+
+ void InitNanoGUI();
+
+ void UpdateSimulation(double dt);
+
+
+ void OnRestartBtnPressed();
+
+ void OnPauseBtnPressed();
+
+
+ void OnMouseMove(const Point2 &pos, const Vector2 &delta);
+
+ void OnLeftMouseDown(const Point2 &pos);
+ void OnLeftMouseDrag(const Point2 &pos, const Vector2 &delta);
+ void OnLeftMouseUp(const Point2 &pos);
+
+ void OnRightMouseDown(const Point2 &pos);
+ void OnRightMouseDrag(const Point2 &pos, const Vector2 &delta);
+ void OnRightMouseUp(const Point2 &pos);
+
+
+ void OnKeyDown(const char *c, int modifiers);
+
+ void OnKeyUp(const char *c, int modifiers);
+
+ void OnSpecialKeyDown(int key, int scancode, int modifiers);
+
+ void OnSpecialKeyUp(int key, int scancode, int modifiers);
+
+
+ void DrawUsingNanoVG(NVGcontext *ctx);
+
+ void DrawUsingOpenGL();
+
+private:
+ double simTime_;
+ bool paused_;
+ nanogui::Button *pauseBtn_;
+};