1 files changed, 122 insertions, 0 deletions
diff --git a/dev/MinGfx/example/CircleViewer.cpp b/dev/MinGfx/example/CircleViewer.cpp
new file mode 100644
index 0000000..9bf50b9
--- /dev/null
+++ b/dev/MinGfx/example/CircleViewer.cpp
@@ -0,0 +1,122 @@
+
+#include "CircleViewer.h"
+
+#include <nanogui/nanogui.h>
+#include <iostream>
+
+
+CircleViewer::CircleViewer() : GraphicsApp(1024,768, "Circle Simulation") {
+    simTime_ = 0.0;
+    paused_ = false;
+    
+    //InitGraphicsContext();
+}
+
+
+CircleViewer::~CircleViewer() {
+    
+}
+
+void CircleViewer::InitNanoGUI() {
+    nanogui::FormHelper *gui = new nanogui::FormHelper(screen());
+    nanogui::ref<nanogui::Window> window = gui->addWindow(Eigen::Vector2i(10, 10), "Simulation Controls");    
+    pauseBtn_ = gui->addButton("Pause", std::bind(&CircleViewer::OnPauseBtnPressed, this));
+    gui->addButton("Restart", std::bind(&CircleViewer::OnRestartBtnPressed, this));
+
+    screen()->performLayout();
+}
+
+void CircleViewer::UpdateSimulation(double dt) {
+    if (!paused_) {
+        simTime_ += dt;
+        std::cout << "Update Simulation " << simTime_ << std::endl;
+    }
+}
+
+
+void CircleViewer::OnRestartBtnPressed() {
+    simTime_ = 0.0;
+}
+
+void CircleViewer::OnPauseBtnPressed() {
+    paused_ = !paused_;
+    if (paused_) {
+        pauseBtn_->setCaption("Play");
+    }
+    else {
+        pauseBtn_->setCaption("Pause");
+    }
+}
+
+
+void CircleViewer::OnMouseMove(const Point2 &pos, const Vector2 &delta) {
+    std::cout << "Mouse moved by " << delta << " to reach " << pos << std::endl;
+}
+
+
+void CircleViewer::OnLeftMouseDown(const Point2 &pos) {
+    std::cout << "Left mouse button DOWN at " << pos << std::endl;
+}
+
+void CircleViewer::OnLeftMouseDrag(const Point2 &pos, const Vector2 &delta) {
+    std::cout << "Mouse dragged (left button) by " << delta << " to reach " << pos << std::endl;
+}
+
+void CircleViewer::OnLeftMouseUp(const Point2 &pos) {
+    std::cout << "Left mouse button UP at " << pos << std::endl;
+}
+
+
+void CircleViewer::OnRightMouseDown(const Point2 &pos) {
+    std::cout << "Right mouse button DOWN at " << pos << std::endl;
+}
+
+void CircleViewer::OnRightMouseDrag(const Point2 &pos, const Vector2 &delta) {
+    std::cout << "Mouse dragged (right button) by " << delta << " to reach " << pos << std::endl;
+}
+
+void CircleViewer::OnRightMouseUp(const Point2 &pos) {
+    std::cout << "Right mouse button UP at " << pos << std::endl;
+}
+
+
+void CircleViewer::OnKeyDown(const char *c, int modifiers) {
+    std::cout << "Key DOWN (" << c << ") modifiers=" << modifiers << std::endl; 
+}
+
+void CircleViewer::OnKeyUp(const char *c, int modifiers) {
+    std::cout << "Key UP (" << c << ") modifiers=" << modifiers << std::endl; 
+}
+
+
+void CircleViewer::OnSpecialKeyDown(int key, int scancode, int modifiers) {
+    std::cout << "Special Key DOWN key=" << key << " scancode=" << scancode << " modifiers=" << modifiers << std::endl; 
+}
+
+void CircleViewer::OnSpecialKeyUp(int key, int scancode, int modifiers) {
+    std::cout << "Special Key UP key=" << key << " scancode=" << scancode << " modifiers=" << modifiers << std::endl; 
+}
+
+
+void CircleViewer::DrawUsingNanoVG(NVGcontext *ctx) {
+    // example of drawing some circles
+
+    nvgBeginPath(ctx);
+    nvgCircle(ctx, 512+50.0*cos(simTime_), 350+200.0*sin(simTime_), 50);
+    nvgFillColor(ctx, nvgRGBA(100,100,255,200));
+    nvgFill(ctx);
+    nvgStrokeColor(ctx, nvgRGBA(0,0,0,255));
+    nvgStroke(ctx);
+
+    nvgBeginPath(ctx);
+    nvgCircle(ctx, 512+200.0*cos(simTime_), 350+50.0*sin(simTime_), 50);
+    nvgFillColor(ctx, nvgRGBA(255,100,100,200));
+    nvgFill(ctx);
+    nvgStrokeColor(ctx, nvgRGBA(0,0,0,255));
+    nvgStroke(ctx);
+}
+
+void CircleViewer::DrawUsingOpenGL() {
+
+}
+