PencilTool.cpp

#include "PencilTool.h"

void PencilTool::onMousePressed(const sf::Vector2f& pos, sf::Mouse::Button btn) {
    if (btn == sf::Mouse::Left) {
        m_drawing = true;
        m_lastPos = pos;
        sf::CircleShape cap(m_thickness / 2.f);
        cap.setFillColor(m_color);
        cap.setOrigin(m_thickness / 2.f, m_thickness / 2.f);
        cap.setPosition(pos);
        m_canvas->drawToCanvas(cap);
    }
}

void PencilTool::onMouseReleased(const sf::Vector2f& pos, sf::Mouse::Button btn) {
    if (btn == sf::Mouse::Left) {
        m_drawing = false;
    }
}

void PencilTool::onMouseMoved(const sf::Vector2f& pos) {
    if (!m_drawing) return;

    sf::Vector2f d = { pos.x - m_lastPos.x, pos.y - m_lastPos.y };
    float len = std::sqrt(d.x * d.x + d.y * d.y);
    if (len > 0.0001f) {
        // ïðÿìîóãîëüíèê-«êèñòü»
        sf::RectangleShape seg({ len, m_thickness });
        seg.setFillColor(m_color);
        seg.setOrigin(0.f, m_thickness / 2.f);
        seg.setPosition(m_lastPos);
        float angle = std::atan2(d.y, d.x) * 180.f / 3.14159265f;
        seg.setRotation(angle);
        m_canvas->drawToCanvas(seg);

        // êîíå÷íàÿ «êåïêà» äëÿ ñãëàæèâàíèÿ
        sf::CircleShape cap(m_thickness / 2.f);
        cap.setFillColor(m_color);
        cap.setOrigin(m_thickness / 2.f, m_thickness / 2.f);
        cap.setPosition(pos);
        m_canvas->drawToCanvas(cap);

        m_lastPos = pos;
    }
}

void PencilTool::setColor(const sf::Color& color) {
    m_color = color;
}