imeth.cpp/src/geometry/shape_2d.cpp at 769d76a3a046ffb972a84997bf4899147366a224 · lordpaijo/imeth.cpp · GitHub

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#include "../../include/imeth/geometry/2D.hpp"
#include "../../include/imeth/operation/arithmetic.hpp"
#include <numbers>

namespace imeth {
double Circle::area() const {
    return std::numbers::pi * radius_ * radius_;
}

double Circle::perimeter() const {
    return 2 * std::numbers::pi * radius_;
}

double Rectangle::area() const {
    return width_ * height_;
}

double Rectangle::perimeter() const {
    return 2 * (width_ + height_);
}

double Triangle::area() const {
    return 0.5 * base_ * height_;
}

double Triangle::perimeter() const {
    double side = imeth::Arithmetic::square_root((base_ / 2) * (base_ / 2) + height_ * height_);
    return base_ + 2 * side;
}

double Square::area() const {
    return side_ * side_;
}

double Square::perimeter() const {
    return 4 * side_;
}

double Pentagon::area() const {
    return 0.25 * imeth::Arithmetic::square_root(5 * (5 + 2 * imeth::Arithmetic::square_root(5))) * side_ * side_;
}

double Pentagon::perimeter() const {
    return 5 * side_;
}

double Hexagon::area() const {
    return (3 * imeth::Arithmetic::square_root(3) / 2) * side_ * side_;
}

double Hexagon::perimeter() const {
    return 6 * side_;
}

double Octagon::area() const {
    return 2 * (1 + imeth::Arithmetic::square_root(2)) * side_ * side_;
}

double Octagon::perimeter() const {
    return 8 * side_;
}
} // namespace imeth