// Basé sur :
// CC-BY Edouard.Thiel@univ-amu.fr - 22/01/2019

#include "princ.h"
#include "glarea.h"
#include "fish_painter.h"
#include "fish_schooling.h"
#include <QApplication>
#include <QTimer>
#include <QElapsedTimer>


int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    Princ main_window;

	FishSchooling schooling(20);
	FishPainter fish_painter;

	GLArea *glarea = main_window.glarea;
	QObject::connect(glarea, &GLArea::onInit,
					 [&](QOpenGLExtraFunctions *glf) {
						 fish_painter.create(glf);
					 });
	QObject::connect(glarea, &GLArea::onPaint,
					 [&](QOpenGLExtraFunctions *glf,
						 const QMatrix4x4 &projection,
						 const QMatrix4x4 &view) {
						 fish_painter.paint(glf, projection, view,
											schooling.fishes);
					 });

    QTimer timer;
    timer.setInterval(1000. / 60);
	QElapsedTimer elapsed_timer;
    elapsed_timer.start();
	qint64 old_chrono = 0;
	QObject::connect(&timer, &QTimer::timeout, [&]() {
		qint64 chrono = elapsed_timer.elapsed();
		float dt = (chrono - old_chrono) / 1000.0f;
		old_chrono = chrono;
		schooling.animate(dt);
		glarea->update();
	});
    timer.start();


    main_window.show();
    return app.exec();
}