minor fixes

src/GLWidget.cpp

@@ -14,7 +14,7 @@ GLWidget::GLWidget(Simulation * simulation) : simulation(simulation) {
 	startTimer(1000 / 144);
 	overlay = new Overlay(simulation);
 	connect(simulation, &Simulation::layoutChanged, this, &GLWidget::uploadStaticDataToGPU);
-	connect(simulation, &Simulation::layoutChanged, overlay, &Overlay::fetchEnergyLimit);
+	connect(simulation, &Simulation::layoutChanged, overlay, &Overlay::resetEnergyLimit);
 	connect(simulation, &Simulation::positionChanged, this, &GLWidget::changePosition);
 }
 
@@ -44,8 +44,6 @@ void GLWidget::initializeGL() {
 	uploadStaticDataToGPU();
 
 	overlay->init();
-
-	std::cout << format().swapInterval() << std::endl;
 }
 
 void GLWidget::paintGL() {

src/GLWidget.h

@@ -12,6 +12,7 @@ class Overlay;
 class GLWidget : public QOpenGLWidget, protected QOpenGLExtraFunctions {
 public:
 	explicit GLWidget(Simulation *);
+	Overlay * overlay;
 protected:
 	void timerEvent(QTimerEvent* e) override;
 	void initializeGL() override;
@@ -37,6 +38,5 @@ private:
 	bool showMasses;
 
 	Simulation * simulation;
-	Overlay * overlay;
 	static bool AnyDialogOpen();
 };

src/MainWindow.cpp

@@ -16,6 +16,7 @@
 #include <QThread>
 #include <QCloseEvent>
 #include <QTimer>
+#include "Overlay.h"
 
 MainWindow::MainWindow() {
 	simulationThread = new QThread(this);
@@ -328,6 +329,8 @@ QWidget * MainWindow::buildSimulationUI() {
 	});
 	substepsSlider = new Slider<>(substepsLabel, "Substeps: %d", &simulation->substeps);
 
+	connect(gravitySlider, &QSlider::valueChanged, glWidget->overlay, &Overlay::resetEnergyLimit);
+
 	gravitySlider->setMaximum(3000);
 	timescaleSlider->setMinimum(1);
 	timescaleSlider->setMaximum(500);
@@ -441,7 +444,7 @@ void MainWindow::add() {
 void MainWindow::resetSimulationControl() {
 	gravitySlider->setValue(981);
 	timescaleSlider->setValue(100);
-	substepsSlider->setValue(5);
+	substepsSlider->setValue(20);
 }
 
 void MainWindow::toggleSimulation() {

src/MainWindow.h

@@ -27,7 +27,7 @@ private:
 
 	std::vector<double> masses, lengths;
 	int segments = 0;
-	int startingAngle = 90;
+	int startingAngle = 135;
 	QColor color = Qt::white;
 	bool multiple = false;
 	bool rainbow = false;

src/Overlay.cpp

@@ -172,6 +172,7 @@ void Overlay::drawTexture(QImage *image) {
 	glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, nullptr);
 }
 
-void Overlay::fetchEnergyLimit() {
+void Overlay::resetEnergyLimit() {
+	simulation->updateEnergy();
 	energyLimit = simulation->kineticEnergy + simulation->potentialEnergy;
 }

src/Overlay.h

@@ -20,7 +20,7 @@ class Overlay : public QObject, protected QOpenGLExtraFunctions {
 	Simulation * simulation;
 	double energyLimit = 0;
 public slots:
-	void fetchEnergyLimit();
+	void resetEnergyLimit();
 public:
 	explicit Overlay(Simulation *);
 	void init();

src/Simulation.h

@@ -29,6 +29,8 @@ public:
 
 	std::mutex pendulaMutex;
 	FPS * ups;
+
+	void updateEnergy();
 signals:
 	void layoutChanged();
 	void positionChanged();
@@ -38,7 +40,6 @@ public slots:
 private slots:
 	void update();
 private:
-	void updateEnergy();
 	QTimer * timer;
 	int updateInterval = 16;
 };

src/main.cpp

@@ -10,6 +10,7 @@ using namespace std::chrono;
 int main(int argc, char* argv[]) {
 	QSurfaceFormat fmt = QSurfaceFormat::defaultFormat();
 	fmt.setDepthBufferSize(24);
+	fmt.setSamples(8);
 	fmt.setSwapInterval(1);
 	fmt.setVersion(3, 3);
 	fmt.setProfile(QSurfaceFormat::CoreProfile);