project-kyoku/include/core/area.h

#pragma once

#include <type_traits>

#include "core/point.h"
#include "core/vector.h"

namespace kku
{

/// Area
///
/// Consists of 2 arithmetic
/// points that represent
/// a rectangle position
/// and 2 arithmetic
/// lengths by x and y
/// that represent
/// rectangle coverage area
template <typename T, typename = std::enable_if_t<std::is_arithmetic_v<T>>>
struct Area
{
    T left = 0;
    T top = 0;
    T width = 0;
    T height = 0;

    inline kku::Point position() const noexcept
    {
        return kku::Point{static_cast<float>(left),
                          static_cast<float>(top) };
    }

    inline void moveBy(const kku::Vector2<T>& vector)
    {
        top += vector.second;
        left += vector.first;
    }

    inline bool contains(const kku::Point& point) const
    {
        return point.x >= left ; // debug it when on computer
    }
};

}