79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
//
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// Created by Иван Ильин on 12.01.2021.
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//
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#include "Point4D.h"
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#include <cmath>
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Point4D::Point4D (double x, double y, double z, double w) {
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_arr_point[0] = x;
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_arr_point[1] = y;
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_arr_point[2] = z;
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_arr_point[3] = w;
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}
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Point4D::Point4D(const Point4D &point4D) {
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_arr_point[0] = point4D.x();
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_arr_point[1] = point4D.y();
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_arr_point[2] = point4D.z();
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_arr_point[3] = point4D.w();
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}
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[[nodiscard]] double Point4D::operator[] (int i) const {
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return _arr_point[i];
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}
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[[nodiscard]] Point4D Point4D::operator-() const {
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return Point4D(-x(), -y(), -z(), -w());
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}
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bool Point4D::operator==(const Point4D& point4D) const
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{
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return this == &point4D || (*this - point4D).sqrAbs() < 0.0000000001;
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}
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bool Point4D::operator!=(const Point4D& point4D) const
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{
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return this != &point4D && (*this - point4D).sqrAbs() > 0.0000000001;
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}
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// Operations with Point4D
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Point4D Point4D::operator+(const Point4D& point4D) const {
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return Point4D(x()+point4D.x(), y()+point4D.y(), z()+point4D.z(), w()+point4D.w());
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}
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Point4D Point4D::operator-(const Point4D& point4D) const {
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return Point4D(*this) + -point4D;
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}
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double Point4D::dot(const Point4D& point4D) const
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{
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return point4D.x() * x() + point4D.y() * y() + point4D.z() * z();
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}
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[[nodiscard]] Point4D Point4D::cross3D(const Point4D& point4D) const {
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return Point4D {y() * point4D.z() - point4D.y() * z(),
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z() * point4D.x() - point4D.z() * x(),
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x() * point4D.y() - point4D.x() * y()};
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}
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Point4D Point4D::operator*(double number) const {
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return Point4D(x()*number, y()*number, z()*number, w()*number);
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}
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Point4D Point4D::operator/(double number) const {
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if(number != 0)
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return Point4D(*this)*(1.0/number);
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else
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return Point4D();
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}
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// Other useful methods
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double Point4D::sqrAbs() const
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{
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return x()*x() + y()*y() + z()*z();
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}
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double Point4D::abs() const {
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return sqrt(sqrAbs());
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}
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Point4D Point4D::normalized() const {
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return Point4D(*this)/abs();
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}
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