Triangle.hpp

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#pragma once
 
#include <string>
 
#include <fishnet/Vec2D.hpp>
#include <fishnet/Concepts.hpp>
#include <fishnet/IGeometry.hpp>
#include "Ring.hpp"
#include "SimplePolygon.hpp"
 
namespace fishnet::geometry {
 
template<fishnet::math::Number T>
class Triangle : public SimplePolygon<T> {
public:
    using numeric_type = T;
    constexpr static GeometryType type = GeometryType::POLYGON;
 
    Triangle(const Vec2D<T> & a, const Vec2D<T> & b, const Vec2D<T> & c)
        : SimplePolygon<T>(Ring<T>({a, b, c})) {}
 
    constexpr util::view_of<Vec2D<T>> auto getPoints() const noexcept {
        return this->getBoundary().getPoints();
    }
 
    constexpr util::view_of<Segment<T>> auto getSegments() const noexcept {
        return this->getBoundary().getSegments();
    }
 
    constexpr std::string toString() const noexcept {
        auto pts = getPoints();
        return "Triangle{" + pts[0].toString() + ", " + pts[1].toString() + ", " + pts[2].toString() + "}";
    }
};
 
// Deduction guide
template<math::Number T>
Triangle(const Vec2D<T> &, const Vec2D<T> &, const Vec2D<T> &) -> Triangle<T>;
 
static_assert(IPolygon<Triangle<double>>);
static_assert(Shape<Triangle<double>>);
// Explicit template instantiation
template class Triangle<fishnet::math::DEFAULT_NUMERIC>;
} // namespace fishnet::geometry