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poligono.cpp
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poligono.cpp
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#include "poligono.h"
#include "ui_poligono.h"
#include <QMessageBox>
#include <math.h>
poligono::poligono(QWidget *parent) :
QDialog(parent),
ui(new Ui::poligono)
{
centerX = width()/2;
centerY = height()/2;
QTransform center;
center.translate(centerX,centerY);
transforms.push_back(center);
ui->setupUi(this);
}
poligono::~poligono()
{
delete ui;
}
void poligono::paintEvent(QPaintEvent *e)
{
QPainter painter(this);
QPen pointPen(Qt::blue);
pointPen.setWidth(2);
painter.setPen(pointPen);
if (dibujaPoli)
{
QString ladosStr = ui->ladosPoliTxt->toPlainText();
if (!ladosStr.isEmpty())
{
lados = ladosStr.toInt(); //Convertir los lados a int
for(int i=0; i<transforms.size(); ++i)
{
painter.setTransform(transforms[i],true);
drawPoligono(lados, painter);
}
}
}
}
void poligono::drawPoligono(int lados, QPainter & painter)
{
double radio = 100;
double angulo = (double)360.0/(double)lados;
double xCentro = 0.0;
double yCentro = 0.0;
int xi,yi,xf,yf;
double val = M_PI / 180;
angulo *= val;
int a = 0;
for(a=1; a<=lados; a++)
{
xi = xCentro + (radio * cos(angulo*a));
yi = yCentro + (radio * sin(angulo*a));
xf = xCentro + (radio * cos(angulo*(a+1)));
yf = yCentro + (radio * sin(angulo*(a+1)));
painter.drawLine(xi, yi, xf, yf);
}
}
void poligono::on_pushButton_clicked()
{
QString l = ui->ladosPoliTxt->toPlainText();
if(l.isEmpty())
{
QMessageBox msgBox;
msgBox.setText("Ingrsa el número de lados");
msgBox.exec();
}
dibujaPoli=!dibujaPoli;
transforms.clear();
QTransform center;
center.translate(centerX,centerY);
transforms.push_back(center);
update();
}
void poligono::on_pushButton_2_clicked()
{
//Hace una rotación de 30 grados cada vez que se da click
QTransform rotate;
rotate.rotate(30);
transforms.push_back(rotate);
update();
}
void poligono::on_pushButton_3_clicked()
{
//Hace un Zoom out de la mitad del tamaño
QTransform zoomOut;
zoomOut.scale(0.5,0.5);
transforms.push_back(zoomOut);
update();
}
void poligono::on_pushButton_4_clicked()
{
QTransform zoomIn;
zoomIn.scale(2,2);
transforms.push_back(zoomIn);
update();
}
void poligono::on_pushButton_5_clicked()
{
QString xStr = ui->transX->toPlainText();
QString yStr = ui->transY->toPlainText();
if(!xStr.isEmpty() && !yStr.isEmpty())
{
int _xStr = xStr.toInt();
int _yStr = yStr.toInt();
QTransform translate;
translate.translate(_xStr, _yStr);
transforms.push_back(translate);
}
else
{
QMessageBox msgBox;
msgBox.setText("Ingrsa unos valores para la traslación");
msgBox.exec();
}
update();
}
void poligono::on_pushButton_6_clicked()
{
QTransform reflect;
reflect.scale(-1,1);
transforms.push_back(reflect);
update();
}
void poligono::on_pushButton_7_clicked()
{
QTransform reflect;
reflect.scale(1,-1);
transforms.push_back(reflect);
update();
}