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/*
* TDDD86 Pattern Recognition
* This file contains the implementation of the Point class.
* See Point.h for comments about each member.
* Your code should work properly with an unmodified version of this file.
*/
#include <limits>
#include <iomanip>
#include <iostream>
#include <sstream>
#include <cmath>
#include <QGraphicsEllipseItem>
#include <QGraphicsLineItem>
#include "Point.h"
double Point::slopeTo(const Point& p) const {
if (x == p.x && y == p.y)
return -std::numeric_limits<double>::infinity();
else if (y == p.y) // horizontal line segment
return 0.0;
else if (x == p.x) // vertical line segment
return std::numeric_limits<double>::infinity();
else
return (static_cast<double>(p.y) - static_cast<double>(y)) /
(static_cast<double>(p.x) - static_cast<double>(x));
}
void Point::draw(QGraphicsScene *scene) const {
QGraphicsEllipseItem *item = new QGraphicsEllipseItem(x / (COORD_MAX + 1.0) * scene->width(),
y / (COORD_MAX + 1.0) * scene->height(),
1, 1);
item->setBrush(QBrush(QColor(255, 0, 0)));
scene->addItem(item);
}
void Point::lineTo(QGraphicsScene *scene, const Point& p) const {
QGraphicsLineItem *item = new QGraphicsLineItem(x / (COORD_MAX + 1.0) * scene->width(),
y / (COORD_MAX + 1.0) * scene->height(),
p.x / (COORD_MAX + 1.0) * scene->width(),
p.y / (COORD_MAX + 1.0) * scene->height());
item->setPen(QPen(QColor(0, 0, 255), 0));
scene->addItem(item);
}
bool Point::operator<(const Point& other) const {
if (x == other.x)
return y < other.y;
else
return x < other.x;
}
bool Point::operator>(const Point& other) const
{
return other < *this;
}
ostream& operator<<(std::ostream& out, const Point& p) {
out << "(" << p.x << ", " << p.y << ")";
return out;
}
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