Archived
705 lines
23 KiB
C++
705 lines
23 KiB
C++
#include "Canvas.h"
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// ===================================================================
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// Вспомогательные функции
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// ===================================================================
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/// Вычислить расстояние между двумя точками
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static double dist_P2P(QPointF p1, QPointF p2)
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{
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return sqrt(pow(p2.x() - p1.x(), 2) + pow(p2.y() - p1.y(), 2));
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}
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/// Создать упорядоченную пару (чтобы pair(obj1, obj2) и pair(obj2, obj1) считались одинаковыми)
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template <typename T, typename A, typename B>
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T makeOrderedPair(A* obj1, B* obj2)
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{
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return (obj1 < obj2) ? std::make_pair(obj1, obj2) : std::make_pair(obj2, obj1);
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}
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// ===================================================================
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// Конструктор и деструктор
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// ===================================================================
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Canvas::Canvas(QWidget* parent)
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: QWidget(parent)
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{
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sys = System();
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setMouseTracking(true);
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setBackgroundRole(QPalette::Base);
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setAutoFillBackground(true);
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}
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Canvas::~Canvas()
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{
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// Очистка динамически выделенной памяти
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for (double* param : params) {
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delete param;
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}
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for (Point* pt : points) {
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delete pt;
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}
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for (Line* line : lines) {
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delete line;
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}
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// Очистка контейнеров
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params.clear();
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points.clear();
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lines.clear();
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parallelPairs.clear();
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P2Ppairs.clear();
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VERT_pairs.clear();
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HORIZ_pairs.clear();
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// Очистка временных указателей
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if (current_line)
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delete current_line;
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if (firstPoint)
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delete firstPoint;
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}
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// ===================================================================
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// Методы изменения режима
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// ===================================================================
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void Canvas::changeMode(Mode _mode)
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{
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mode = _mode;
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}
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// ===================================================================
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// Методы поиска и проверки
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// ===================================================================
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Line* Canvas::findAt(QPointF& pos, qreal tolerance)
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{
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// TODO: реализовать проверку, находится ли точка на линии
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for (Line* line : lines) {
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if (line->contains(pos, tolerance)) {
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return line;
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}
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}
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return nullptr;
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}
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Point* Canvas::findPointAt(QPointF pos, qreal tolerance)
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{
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Point* temp = nullptr;
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for (Line* line : lines) {
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QPointF p1(*line->p1.x, *line->p1.y);
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QPointF p2(*line->p2.x, *line->p2.y);
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if (dist_P2P(p1, pos) <= tolerance)
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temp = line->start_ref;
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if (dist_P2P(p2, pos) <= tolerance)
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temp = line->end_ref;
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}
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return temp;
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}
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bool Canvas::areCoincident(Point* p1, Point* p2)
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{
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return P2Ppairs.count(makeOrderedPair<PointPair>(p1, p2));
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}
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bool Canvas::areHorizontalVertical(Point* p1, Point* p2, bool mode)
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{
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// mode = false - проверка горизонтальности
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// mode = true - проверка вертикальности
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if (!mode)
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return HORIZ_pairs.count(makeOrderedPair<PointPair>(p1, p2));
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else
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return VERT_pairs.count(makeOrderedPair<PointPair>(p1, p2));
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}
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bool Canvas::isLineHorizontal(Line* line)
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{
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if (!line || !line->start_ref || !line->end_ref)
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return false;
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return HORIZ_pairs.count(makeOrderedPair<PointPair>(line->start_ref, line->end_ref));
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}
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bool Canvas::isLineVertical(Line* line)
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{
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if (!line || !line->start_ref || !line->end_ref)
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return false;
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return VERT_pairs.count(makeOrderedPair<PointPair>(line->start_ref, line->end_ref));
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}
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bool Canvas::areAlreadyParallel(Line* l1, Line* l2)
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{
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return parallelPairs.count(makeOrderedPair<LinePair>(l1, l2));
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}
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bool Canvas::areAlreadyPerpendicular(Line* line1, Line* line2)
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{
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return perpendicularPairs.count(makeOrderedPair<LinePair>(line1, line2));
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}
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// ===================================================================
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// Методы работы с ограничениями
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// ===================================================================
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void Canvas::remove_constraints()
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{
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// Удаляем ограничение из солвера
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sys.clearByTag(constraints_count - 1);
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// Удаляем из соответствующих контейнеров в зависимости от типа ограничения
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switch (lastConstraint.mode) {
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case Mode::Horizontal: {
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if (auto* pair = std::get_if<PointPair>(&lastConstraint.data)) {
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HORIZ_pairs.erase(*pair);
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}
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break;
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}
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case Mode::Vertical: {
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if (auto* pair = std::get_if<PointPair>(&lastConstraint.data)) {
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VERT_pairs.erase(*pair);
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}
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break;
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}
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case Mode::Parallel: {
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if (auto* pair = std::get_if<LinePair>(&lastConstraint.data)) {
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parallelPairs.erase(*pair);
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}
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break;
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}
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case Mode::Coincedent: {
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if (auto* pair = std::get_if<PointPair>(&lastConstraint.data)) {
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P2Ppairs.erase(*pair);
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}
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break;
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}
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default:
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break;
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}
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// Сбрасываем информацию о последнем ограничении
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lastConstraint.mode = Mode::None;
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constraints_count--;
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}
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// ===================================================================
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// Обработчики событий мыши
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// ===================================================================
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void Canvas::mousePressEvent(QMouseEvent* event)
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{
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QPointF scene = UCS_POSITION;
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#ifdef _DEBUG
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qDebug() << "Scene point in" << scene.x() << scene.y();
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#endif
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// ====================== Режим None: перемещение объектов ======================
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if (mode == Mode::None) {
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Point* p = findPointAt(scene);
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if (p) {
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draggedPoint = p;
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dragOffset = scene - QPointF(*p->x, *p->y);
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return;
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}
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Line* found = findAt(scene);
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if (found) {
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draggedLine = found;
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QPointF lineCenter(
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(*found->p1.x + *found->p2.x) / 2.0,
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(*found->p1.y + *found->p2.y) / 2.0
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);
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dragOffset = scene - lineCenter;
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return;
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}
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}
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// ====================== Режим Horizontal/Vertical ======================
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else if (mode == Mode::Horizontal || mode == Mode::Vertical) {
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Line* found = findAt(scene);
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if (found) {
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// Проверка: если линия уже вертикальна, нельзя сделать её горизонтальной
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if (mode == Mode::Horizontal && isLineVertical(found)) {
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QMessageBox::warning(this,
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QString("Невозможно"),
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QString("Эта линия уже вертикальна и не может быть горизонтальной!"),
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QMessageBox::Ok
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);
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mode = Mode::None;
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return;
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}
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// Проверка: если линия уже горизонтальна, нельзя сделать её вертикальной
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if (mode == Mode::Vertical && isLineHorizontal(found)) {
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QMessageBox::warning(this,
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QString("Невозможно"),
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QString("Эта линия уже горизонтальна и не может быть вертикальной!"),
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QMessageBox::Ok
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);
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mode = Mode::None;
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return;
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}
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if (mode == Mode::Horizontal) {
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sys.addConstraintHorizontal(*found, constraints_count++);
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auto pair = makeOrderedPair<PointPair>(found->start_ref, found->end_ref);
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HORIZ_pairs.insert(pair);
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lastConstraint.mode = Mode::Horizontal;
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lastConstraint.data = pair;
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}
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else {
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sys.addConstraintVertical(*found, constraints_count++);
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auto pair = makeOrderedPair<PointPair>(found->start_ref, found->end_ref);
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VERT_pairs.insert(pair);
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lastConstraint.mode = Mode::Vertical;
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lastConstraint.data = pair;
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}
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update();
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after_constraint = true;
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}
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mode = Mode::None;
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}
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// ====================== Режим DrawingLine: рисование линий ======================
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else if (mode == Mode::DrawingLine) {
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if (!current_line) {
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// Первый клик: создаем новую линию
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current_line = new Line();
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current_line->set_tag(obj_count);
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// Создаем координаты для точек линии
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double* x1 = new double(scene.x());
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double* y1 = new double(scene.y());
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double* x2 = new double(scene.x());
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double* y2 = new double(scene.y());
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// Добавляем параметры в солвер
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params.push_back(x1);
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params.push_back(y1);
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// Создаем точки и привязываем к линии
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points.push_back(new Point(x1, y1, obj_count));
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points.push_back(new Point(x2, y2, obj_count));
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current_line->p1.x = x1;
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current_line->p1.y = y1;
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current_line->p2.x = x2;
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current_line->p2.y = y2;
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current_line->start_ref = points[points.size() - 2];
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current_line->end_ref = points[points.size() - 1];
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}
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else {
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// Второй клик: завершаем рисование линии
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*current_line->p2.x = scene.x();
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*current_line->p2.y = scene.y();
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// Проверка минимальной длины линии
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double len = sqrt(pow(*current_line->p2.x - *current_line->p1.x, 2) +
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pow(*current_line->p2.y - *current_line->p1.y, 2));
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if (len < 10) {
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// Линия слишком короткая - отменяем создание
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delete current_line;
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current_line = nullptr;
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// Удаляем созданные точки и параметры
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delete points.back();
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points.pop_back();
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delete points.back();
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points.pop_back();
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delete params.back();
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params.pop_back();
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delete params.back();
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params.pop_back();
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mode = Mode::None;
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QMessageBox::critical(this, "WHOOPS",
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"Sorry, your line is very short", QMessageBox::Ok);
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update();
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return;
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}
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// Добавляем координаты второй точки в параметры
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params.push_back(current_line->p2.x);
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params.push_back(current_line->p2.y);
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// Завершаем создание линии
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lines.append(current_line);
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current_line = nullptr;
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mode = Mode::None;
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obj_count++;
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after_constraint = true;
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}
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update();
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return;
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}
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// ====================== Режим Parallel: задание параллельности ======================
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else if (mode == Mode::Parallel) {
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Line* found = findAt(scene);
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if (!found) {
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current_line = nullptr;
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update();
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return;
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}
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// Первый клик: выбираем первую линию
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if (!current_line) {
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current_line = found;
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update();
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return;
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}
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// Повторный клик на ту же линию: сброс выбора
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if (found == current_line) {
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current_line = nullptr;
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update();
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return;
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}
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// Второй клик на другую линию: добавляем ограничение параллельности
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if (!areAlreadyParallel(found, current_line)) {
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auto pair = makeOrderedPair<LinePair>(found, current_line);
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sys.addConstraintParallel(*found, *current_line, constraints_count++);
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parallelPairs.insert(pair);
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lastConstraint.mode = Mode::Parallel;
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lastConstraint.data = pair;
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current_line = nullptr;
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mode = Mode::None;
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after_constraint = true;
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update();
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}
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else {
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// Линии уже параллельны - сообщаем об ошибке
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#ifdef _DEBUG
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qDebug() << "Line" << current_line << "and" << found << "are parallel. Abort!";
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#endif
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QMessageBox::warning(this,
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QString("Wrong"),
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QString("Parallel lines can not be more parallel!"),
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QMessageBox::Ok
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);
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current_line = nullptr;
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update();
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return;
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}
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}
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// ====================== Режим Coincedent: совпадение точек ======================
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else if (mode == Mode::Coincedent) {
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Point* clickedPoint = findPointAt(scene);
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if (!clickedPoint) {
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firstPoint = nullptr;
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update();
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return;
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}
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// Первый клик: выбираем первую точку
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if (!firstPoint) {
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firstPoint = clickedPoint;
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update();
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return;
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}
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// Повторный клик на ту же точку: сброс выбора
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if (clickedPoint == firstPoint) {
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firstPoint = nullptr;
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update();
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return;
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}
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// Находим линии, к которым принадлежат точки
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Line* l1 = nullptr;
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Line* l2 = nullptr;
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for (Line* l : lines) {
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if (l->start_ref == firstPoint || l->end_ref == firstPoint)
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l1 = l;
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if (l->start_ref == clickedPoint || l->end_ref == clickedPoint)
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l2 = l;
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}
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// Проверка на невозможность ограничения
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if ((l1 == l2 && l1 && l2) || areCoincident(firstPoint, clickedPoint)) {
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QMessageBox::critical(this, QString("NO!"), QString("P2P failed"));
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firstPoint = nullptr;
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mode = Mode::None;
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update();
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return;
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}
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// Добавляем ограничение совпадения точек
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sys.addConstraintP2PCoincident(*clickedPoint, *firstPoint, constraints_count++);
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auto pair = makeOrderedPair<PointPair>(clickedPoint, firstPoint);
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P2Ppairs.insert(pair);
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lastConstraint.mode = Mode::Coincedent;
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lastConstraint.data = pair;
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firstPoint = nullptr;
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mode = Mode::None;
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after_constraint = true;
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update();
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return;
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}
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else if (mode == Mode::Perpendicular) {
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Line* found = findAt(scene);
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if (!found) {
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current_line = nullptr;
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update();
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return;
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}
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// Первый клик: выбираем первую линию
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if (!current_line) {
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current_line = found;
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update();
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return;
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}
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// Повторный клик на ту же линию: сброс выбора
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if (found == current_line) {
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current_line = nullptr;
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update();
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return;
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}
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if (!areAlreadyPerpendicular(found, current_line)) {
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auto pair = makeOrderedPair<LinePair>(found, current_line);
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sys.addConstraintPerpendicular(*found, *current_line, constraints_count++);
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perpendicularPairs.insert(pair);
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current_line = nullptr;
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mode = Mode::None;
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after_constraint = true;
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update();
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}
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else {
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QMessageBox::warning(this,
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QString("Wrong"),
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QString("Perpendicular lines can not be more perpendicular!"),
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QMessageBox::Ok
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);
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current_line = nullptr;
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update();
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return;
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}
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}
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}
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void Canvas::mouseMoveEvent(QMouseEvent* event)
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{
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// ====================== Перемещение точки ======================
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if (draggedPoint) {
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QPointF pos = UCS_POSITION - dragOffset;
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auto coincidentGroup = getCoincidentGroup(draggedPoint);
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for (Point* pt : coincidentGroup) {
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*pt->x = pos.x();
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*pt->y = pos.y();
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}
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for (Point* basePt : coincidentGroup) {
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for (Point* other : points) {
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if (areHorizontalVertical(basePt, other, true)) {
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*other->x = pos.x();
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}
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if (areHorizontalVertical(basePt, other, false)) {
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*other->y = pos.y();
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}
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}
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}
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*draggedPoint->x = pos.x();
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*draggedPoint->y = pos.y();
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update();
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}
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// ====================== Перемещение линии ======================
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else if (draggedLine) {
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QPointF newCenter = UCS_POSITION - dragOffset;
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QPointF oldCenter(
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(*draggedLine->p1.x + *draggedLine->p2.x) / 2.0,
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(*draggedLine->p1.y + *draggedLine->p2.y) / 2.0
|
|
);
|
|
|
|
// Вычисляем смещение
|
|
double dx = newCenter.x() - oldCenter.x();
|
|
double dy = newCenter.y() - oldCenter.y();
|
|
|
|
// Перемещаем обе точки линии
|
|
Point* linePoints[2] = { draggedLine->start_ref, draggedLine->end_ref };
|
|
|
|
for (int i = 0; i < 2; i++) {
|
|
Point* currentPoint = linePoints[i];
|
|
|
|
*currentPoint->x += dx;
|
|
*currentPoint->y += dy;
|
|
|
|
// Обновляем совпадающие точки
|
|
for (Point* pair : points) {
|
|
if (pair != currentPoint && areCoincident(currentPoint, pair)) {
|
|
*pair->x = *currentPoint->x;
|
|
*pair->y = *currentPoint->y;
|
|
}
|
|
}
|
|
}
|
|
update();
|
|
}
|
|
#ifdef _DEBUG
|
|
else
|
|
showObjectTag(WIDGET_POSITION);
|
|
#endif
|
|
}
|
|
|
|
void Canvas::mouseReleaseEvent(QMouseEvent* event)
|
|
{
|
|
Q_UNUSED(event);
|
|
|
|
if (draggedPoint) {
|
|
draggedPoint = nullptr;
|
|
update();
|
|
}
|
|
|
|
if (draggedLine) {
|
|
draggedLine = nullptr;
|
|
update();
|
|
}
|
|
}
|
|
|
|
// ===================================================================
|
|
// Метод отрисовки
|
|
// ===================================================================
|
|
|
|
void Canvas::paintEvent(QPaintEvent* event)
|
|
{
|
|
Q_UNUSED(event);
|
|
|
|
QPainter p(this);
|
|
p.setRenderHint(QPainter::Antialiasing, true);
|
|
p.translate(width() / 2.0, height() / 2.0);
|
|
p.scale(1.0, -1.0);
|
|
|
|
p.setPen(Qt::red);
|
|
p.drawLine(-5, 0, 5, 0);
|
|
p.drawLine(0, -5, 0, 5);
|
|
|
|
|
|
// ====================== Решение системы уравнений ======================
|
|
if (!params.empty()) {
|
|
int res = sys.solve(params);
|
|
if (res == SolveStatus::Success || res == SolveStatus::Converged) {
|
|
sys.applySolution();
|
|
}
|
|
else if (res == SolveStatus::Failed && after_constraint) {
|
|
// Ошибка решения: удаляем последнее добавленное ограничение
|
|
QMessageBox::warning(this, QString("Error!"),
|
|
QString("Last constraint is unavailable!"));
|
|
remove_constraints();
|
|
}
|
|
after_constraint = false;
|
|
}
|
|
|
|
// ====================== Отрисовка линий ======================
|
|
for (Line* line : lines) {
|
|
bool isSelected = (mode == Mode::Parallel && line == current_line);
|
|
|
|
// Настройка пера для линии
|
|
QPen linePen = isSelected ? QPen(Qt::red, 4) : QPen(Qt::black, 2);
|
|
p.setPen(linePen);
|
|
|
|
// Рисуем линию
|
|
p.drawLine(
|
|
QPointF(*line->p1.x, *line->p1.y),
|
|
QPointF(*line->p2.x, *line->p2.y)
|
|
);
|
|
|
|
// Рисуем конечные точки линии
|
|
QBrush pointBrush = isSelected ? QBrush(Qt::red) : QBrush(Qt::darkBlue);
|
|
p.setBrush(pointBrush);
|
|
p.setPen(Qt::NoPen);
|
|
|
|
p.drawEllipse(QPointF(*line->p1.x, *line->p1.y), 5, 5);
|
|
p.drawEllipse(QPointF(*line->p2.x, *line->p2.y), 5, 5);
|
|
}
|
|
|
|
// ====================== Подсветка выбранной точки (режим Coincedent) ======================
|
|
if (mode == Mode::Coincedent && firstPoint) {
|
|
QPointF pt(*firstPoint->x, *firstPoint->y);
|
|
p.setPen(Qt::NoPen);
|
|
p.setBrush(Qt::red);
|
|
p.drawEllipse(pt, 12, 12);
|
|
p.setBrush(Qt::white);
|
|
p.drawEllipse(pt, 8, 8);
|
|
p.setBrush(Qt::red);
|
|
p.drawEllipse(pt, 4, 4); // маленький центр
|
|
}
|
|
|
|
// ====================== Отрисовка текущей линии (режим DrawingLine) ======================
|
|
if (current_line && mode == Mode::DrawingLine) {
|
|
// Рисуем начальную точку текущей линии
|
|
p.setBrush(Qt::blue);
|
|
p.setPen(Qt::NoPen);
|
|
p.drawEllipse(QPointF(*current_line->p1.x, *current_line->p1.y), 6, 6);
|
|
}
|
|
}
|
|
|
|
void Canvas::leaveEvent(QEvent* event)
|
|
{
|
|
Q_UNUSED(event);
|
|
QToolTip::hideText();
|
|
}
|
|
|
|
#ifdef _DEBUG
|
|
void Canvas::showObjectTag(QPointF pos)
|
|
{
|
|
QPointF l = screenToLogical(pos);
|
|
Line* lineUnderCursor = findAt(l, 1.0);
|
|
if (lineUnderCursor && lineUnderCursor != draggedLine) {
|
|
QPointF p1(*lineUnderCursor->p1.x, *lineUnderCursor->p1.y);
|
|
QPointF p2(*lineUnderCursor->p2.x, *lineUnderCursor->p2.y);
|
|
QLineF info_line(p1, p2);
|
|
QString Text = QString("Line %1\nLength = %2mm")
|
|
.arg(lineUnderCursor->get_tag() + 1)
|
|
.arg(info_line.length());
|
|
QToolTip::showText(mapToGlobal(pos.toPoint()), Text, this);
|
|
}
|
|
else
|
|
QToolTip::hideText();
|
|
}
|
|
#endif
|
|
|
|
QPointF Canvas::screenToLogical(const QPointF& screenPos) const
|
|
{
|
|
QPointF logical = screenPos;
|
|
logical.rx() -= width() / 2.0;
|
|
logical.ry() -= height() / 2.0;
|
|
|
|
logical.ry() = -logical.ry();
|
|
|
|
return logical;
|
|
}
|
|
|
|
std::vector<Point*> Canvas::getCoincidentGroup(Point* p)
|
|
{
|
|
std::vector<Point*> group;
|
|
group.push_back(p);
|
|
|
|
for (Point* other : points) {
|
|
if (other != p && areCoincident(p, other)) {
|
|
group.push_back(other);
|
|
}
|
|
}
|
|
return group;
|
|
}
|