ray_drawing

#pragma once

#include "segment.h"

class Ray : public Segment {
public:
    Ray(Point first, Point second)
        : Segment(
            std::move(first),
            std::move(second)
        ) {}

    virtual const Point getFirstPoint(const Painter& p) const override {
        return TwoPointFigure::getFirstPoint(p);
    }

    virtual const Point getSecondPoint(const Painter& painter) const override {
        const Point first = getFirstPoint(painter);
        int multiplier = std::numeric_limits<int>::max();
        if (delta.x < 0) {
            multiplier = std::min(
                multiplier,
                utils::ceiling(the_center.x, -delta.x)
            );
        }
        if (delta.x > 0) {
            multiplier = std::min(
                multiplier,
                utils::ceiling(painter.getWidth() - the_center.x, delta.x)
            );
        }
        if (delta.y < 0) {
            multiplier = std::min(
                multiplier,
                utils::ceiling(the_center.y, -delta.y)
            );
        }
        if (delta.y > 0) {
            multiplier = std::min(
                multiplier,
                utils::ceiling(painter.getHeight() - the_center.y, delta.y)
            );
        }
        return first + delta * multiplier;
    }
};