CircleTool.cpp

#include "CircleTool.h"

void CircleTool::onMousePressed(const sf::Vector2f& pos, sf::Mouse::Button btn) {
    if (btn == sf::Mouse::Left) {
        m_drawing = true;
        m_start = pos;
        m_current = pos;
    }
}

void CircleTool::onMouseReleased(const sf::Vector2f& pos, sf::Mouse::Button btn) {
    if (btn == sf::Mouse::Left && m_drawing) {
        m_drawing = false;
        float radius = distance(m_start, pos) / 2.f;
        sf::CircleShape circ(radius);
        circ.setPosition(std::min(m_start.x, pos.x), std::min(m_start.y, pos.y));
        circ.setFillColor(sf::Color(0, 0, 0, 0));
        circ.setOutlineColor(m_color);
        circ.setOutlineThickness(m_thickness);
        m_canvas->drawToCanvas(circ);
    }
}

void CircleTool::drawPreview(sf::RenderWindow& win) {
    if (!m_drawing) return;
    float radius = distance(m_start, m_current) / 2.f;
    sf::CircleShape circ(radius);
    circ.setPosition(std::min(m_start.x, m_current.x), std::min(m_start.y, m_current.y));
    circ.setFillColor(sf::Color(0, 0, 0, 0));
    circ.setOutlineColor(m_color);
    circ.setOutlineThickness(m_thickness);
    m_canvas->drawPreview(win, circ);
}

float CircleTool::distance(const sf::Vector2f& a, const sf::Vector2f& b) {
    return std::sqrt((a.x - b.x) * (a.x - b.x) + (a.y - b.y) * (a.y - b.y));
}