#include <recti/polygon.hpp>
template<typename T>
recti::Polygon class

Polygon.

Template parameters
T

Polygon is a class template that represents an arbitrary polygon. It stores the origin point and a vector of edges that define the polygon. The template parameter T specifies the type of the coordinates of the points.

Constructors, destructors, conversion operators

Polygon(gsl::span<const Point<T>> pointset) explicit constexpr
Constructs a new Polygon object from a set of points.

Public functions

auto operator+=(const Vector2<T>& rhs) -> Polygon & -> auto constexpr
Adds a vector to the origin of the polygon, effectively translating the polygon.
auto signed_area_x2() const -> T -> auto constexpr
Calculates the signed area of the polygon multiplied by 2.
auto lb() const -> Point< T > -> auto
auto ub() const -> Point< T > -> auto

Function documentation

template<typename T>
recti::Polygon<T>::Polygon(gsl::span<const Point<T>> pointset) explicit constexpr

Constructs a new Polygon object from a set of points.

Parameters
pointset in A span of points representing the vertices of the polygon.

This constructor takes a gsl::span of Point<T> objects representing the vertices of the polygon. The first point in the span is used as the origin of the polygon, and the remaining points are used to construct the edges of the polygon as vectors relative to the origin.

template<typename T>
auto recti::Polygon<T>::operator+=(const Vector2<T>& rhs) -> Polygon & constexpr

Adds a vector to the origin of the polygon, effectively translating the polygon.

Parameters
rhs in The vector to add to the origin.
Returns A reference to the modified polygon.

template<typename T>
auto recti::Polygon<T>::signed_area_x2() const -> T constexpr

Calculates the signed area of the polygon multiplied by 2.

Returns The signed area of the polygon multiplied by 2.

This function calculates the signed area of the polygon by summing the cross products of adjacent edges. The result is multiplied by 2 to avoid the need for floating-point arithmetic.

template<typename T>
auto recti::Polygon<T>::lb() const -> Point< T >

Returns Point<T>

template<typename T>
auto recti::Polygon<T>::ub() const -> Point< T >

Returns Point<T>