Geometry.cpp

//
// Created by Admin on 6/18/2021.
//

#include "Geometry.h"
#include <cmath>
#include <ctgmath>
const double pi = 2. * atan2(1., 0.);
double to_radians(double theta_d) {
	return theta_d * pi / 180.0;
}

double to_degrees(double theta_r) {
	return theta_r * 180.0 / pi;
}
// construct a Cartesian_vector from a Polar_vector
Cartesian_vector::Cartesian_vector(const Polar_vector &pv) {
	delta_x = pv.r * cos(pv.theta);
	delta_y = pv.r * sin(pv.theta);
}
Cartesian_vector::Cartesian_vector() {
	delta_x = 0.0;
	delta_y = 0.0;
}
void Cartesian_vector::operator=(const Polar_vector &pv) {
	delta_x = pv.r * cos(pv.theta);
	delta_y = pv.r * sin(pv.theta);
}
// construct a Polar_vector from a Cartesian_vector
Polar_vector::Polar_vector(const Cartesian_vector &cv) {
	r = sqrt((cv.delta_x * cv.delta_x) + (cv.delta_y * cv.delta_y));
	/* atan2 will return a negative _angle for Quadrant III, IV, must translate to I, II */
	theta = atan2(cv.delta_y, cv.delta_x);
	if (theta < 0.)
		theta = 2. * pi + theta; // normalize theta positive
}
Polar_vector::Polar_vector() {
	r = 0.0;
	theta = 0.0;
}
void Polar_vector::operator=(const Cartesian_vector &cv) {
	r = sqrt((cv.delta_x * cv.delta_x) + (cv.delta_y * cv.delta_y));
	/* atan2 will return a negative _angle for Quadrant III, IV, must translate to I, II */
	theta = atan2(cv.delta_y, cv.delta_x);
	if (theta < 0.)
		theta = 2. * pi + theta; // normalize theta positive
}

Point::Point(double x, double y) :
		x(x), y(y) {
}

Point::Point() {
	x = 0.0;
	y = 0.0;
}

void Point::print() const {
	cout << "(" << x << ", " << y << ")";
}

bool Point::operator==(const Point &rhs) {
	return x == rhs.x && y == rhs.y;
}