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#include "mainwindowimpl.h"
#include <QGraphicsScene>
#include <QPointF>
#include <QPainterPath>
#include <QPen>
//#include <QColor>
#include <QBrush>
#include <QTime>
#include <QDebug>
#include <math.h>
//
MainWindowImpl::MainWindowImpl( QWidget * parent, Qt::WFlags f) 
	: QMainWindow(parent, f)
{
	setupUi(this);
	connect (cmdGo, SIGNAL(clicked()), this, SLOT(Go()));
	connect (cmdClear, SIGNAL(clicked()), this, SLOT(clear()));
	QWidget * w = new QWidget;
	w->setLayout(basic);
	setCentralWidget(w);
	GS = new QGraphicsScene;
	GV->setScene(GS);
	GV->scale(130,130);
	konstr();
	QTime timer;
	timer.start();
	qsrand(timer.second());
	
}
//--------------------------------
QPointF MainWindowImpl::func(double x){
	QPointF point;
	point.setX(pow(sin(x),2));
	point.setY(sin(x-2));
	return point;
	//x(t)=sin^2(t), y(t)=sin(t-2)
}
//--------------------------------
void MainWindowImpl::Go(){
	clear();
	double x,y;
	QGraphicsEllipseItem * item;
	while (spinBox->value()){
		spinBox->setValue(spinBox->value()-1);
		x=rand()%100/100.0;
		y=rand()%200/100.0-1;
                     /* В ТОЧКЕ Х и У НУЖНО ОПРЕДЕЛИТЬ ЦВЕТ*/
		item=GS->addEllipse(x,-y, 0.01,0.01);
		
	}
}
//-------------------------------
void MainWindowImpl::konstr(){
	path = new QPainterPath;
	path->moveTo(func(0));
	for (double i=0; i<2*M_PI; i+=0.01){
		path->lineTo(func(i));	
	}
	//QGraphicsPathItem * addPath ( const QPainterPath & path, const QPen & pen = QPen(), const QBrush & brush = QBrush() )
	QPen pen(Qt::darkCyan);
	QBrush brush(Qt::darkCyan);
	GS->addPath(*path, pen, brush);
	GS->addRect(0,-1,1,2);
}
void MainWindowImpl::clear(){
	GS->clear();
	QPen pen(Qt::darkCyan);
	QBrush brush(Qt::darkCyan);
	GS->addPath(*path, pen, brush);
	GS->addRect(0,-1,1,2);
}
//

void MainWindowImpl::Go(){
	clear();
	double x,y;
	QGraphicsItem * item;
	int count=spinBox->value(), countTrue=0;
	while (spinBox->value()){
		spinBox->setValue(spinBox->value()-1);
		x=rand()%100/100.0;
		y=rand()%200/100.0-1;
		item=GS->addEllipse(x,-y, 0.01,0.01);
		if (item->collidesWithPath(*path)) countTrue++;
	}
	txtOut->setText(QString::number((countTrue/(double)count)*2));
}