Initial commit

src/Screen.cpp

@@ -0,0 +1,78 @@
+#include "Screen.hpp"
+
+#include <time.h>
+
+#include <QPainter>
+#include <QPaintEvent>
+#include <QMouseEvent>
+#include <QTimer>
+#include <QtMath>
+
+Screen::Screen(QWidget* parent) :
+	QOpenGLWidget(parent)
+{
+	srand(time(NULL));
+
+	background = QBrush(Qt::black);
+
+	renderTimer = new QTimer(this);
+	connect(
+		renderTimer, &QTimer::timeout,
+		this, &Screen::Render
+	);
+	renderTimer->start(1000.f / 60.0f);
+}
+
+void Screen::mouseMoveEvent(QMouseEvent* event)
+{
+	if (mouseDown)
+	{
+		Planet* planet = planets.back();
+		QPointF distance = event->localPos() - mouseClickPos;
+		planet->Resize(qSqrt(distance.x()*distance.x() + distance.y() *distance.y()));
+	}
+}
+
+void Screen::mousePressEvent(QMouseEvent* event)
+{
+	if (event->button() == Qt::MouseButton::LeftButton)
+	{
+		planets.push_back(new Planet(event->localPos(), 0,
+			QColor(rand() % 256, rand() % 256, rand() % 256)
+		));
+		mouseClickPos = event->localPos();
+		mouseDown = true;
+	}
+
+	if (event->button() == Qt::MouseButton::RightButton)
+	{
+		if (mouseDown)
+		{
+			planets.pop_back();
+			mouseDown = false;
+		}
+	}
+}
+
+void Screen::mouseReleaseEvent(QMouseEvent* event)
+{
+	if (event->button() == Qt::MouseButton::LeftButton)
+		mouseDown = false;
+}
+
+void Screen::Render()
+{
+	update();
+}
+
+void Screen::paintEvent(QPaintEvent* event)
+{
+	QPainter painter;
+	painter.begin(this);
+	painter.fillRect(rect(), background);
+
+	for (Planet* planet : planets)
+		planet->Draw(&painter);
+
+	painter.end();
+}