509 lines
12 KiB
C++
509 lines
12 KiB
C++
#include "Canvas.h"
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static double dist_P2P(QPointF p1, QPointF p2) {
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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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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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void Canvas::changeMode(Mode _mode)
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{
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mode = _mode;
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}
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// TODO
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Line* Canvas::findAt(QPointF& pos)
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{
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for (Line* line : lines) {
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if (line->contains(pos)) {
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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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// False - Horizonta, True - Vertical
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bool Canvas::areHorizontalVertical(Point* p1, Point* p2, bool mode)
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{
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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) 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) 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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void Canvas::remove_constraints()
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{
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sys.clearByTag(constraints_count - 1);
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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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lastConstraint.mode = Mode::None;
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constraints_count--;
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}
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void Canvas::mousePressEvent(QMouseEvent* event)
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{
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QPointF scene = event->pos();
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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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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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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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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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else if (mode == Mode::DrawingLine) {
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if (!current_line) {
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current_line = new Line();
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current_line->set_tag(obj_count);
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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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params.push_back(x1);
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params.push_back(y1);
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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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*current_line->p2.x = scene.x();
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*current_line->p2.y = scene.y();
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// Временный ограничитель длины линии
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double len = sqrt(pow(*current_line->p2.x - *current_line->p1.x, 2) + pow(*current_line->p2.y - *current_line->p1.y, 2));
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if (len < 10) {
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delete current_line;
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current_line = nullptr;
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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", "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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params.push_back(current_line->p2.x);
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params.push_back(current_line->p2.y);
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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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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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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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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 (!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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#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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update();
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}
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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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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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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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Line *l1 = nullptr, *l2 = nullptr;
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for (Line* l : lines) {
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if (l->start_ref == firstPoint || l->end_ref == firstPoint) l1 = l;
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if (l->start_ref == clickedPoint || l->end_ref == clickedPoint) l2 = l;
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}
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if (l1 == l2 && l1 && l2 ||
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(areCoincident(firstPoint, clickedPoint)))
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{
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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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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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}
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void Canvas::mouseMoveEvent(QMouseEvent* event)
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{
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if (draggedPoint) {
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QPointF pos = event->pos() - dragOffset;
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for (Point* pair : points) {
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if (areCoincident(draggedPoint, pair)) {
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*pair->x = pos.x();
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*pair->y = pos.y();
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}
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if (areHorizontalVertical(draggedPoint, pair, true)) {
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*pair->x = pos.x();
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}
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if (areHorizontalVertical(draggedPoint, pair, false)) {
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*pair->y = pos.y();
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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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else if (draggedLine) {
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QPointF newCenter = event->pos() - 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
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);
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// Смещение для перемещения
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double dx = newCenter.x() - oldCenter.x();
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double dy = newCenter.y() - oldCenter.y();
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Point* linePoints[2] = { draggedLine->start_ref, draggedLine->end_ref };
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for (int i = 0; i < 2; i++) {
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Point* currentPoint = linePoints[i];
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*currentPoint->x += dx;
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*currentPoint->y += dy;
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for (Point* pair : points) {
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if (pair != currentPoint && areCoincident(currentPoint, pair)) {
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*pair->x = *currentPoint->x;
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*pair->y = *currentPoint->y;
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}
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}
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}
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update();
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}
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}
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void Canvas::mouseReleaseEvent(QMouseEvent* event)
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{
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if (draggedPoint) {
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draggedPoint = nullptr;
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update();
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}
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if (draggedLine) {
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draggedLine = nullptr;
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update();
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}
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}
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void Canvas::paintEvent(QPaintEvent*)
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{
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QPainter p(this);
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p.setRenderHint(QPainter::Antialiasing, true);
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// === Решаем систему один раз ===
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if (!params.empty()) {
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int res = sys.solve(params);
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if (res == SolveStatus::Success || res == SolveStatus::Converged) {
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sys.applySolution();
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}
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else if (res == SolveStatus::Failed && after_constraint){
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QMessageBox::warning(this, QString("Error!"), QString("Last constraint is unavailable!"));
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remove_constraints();
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}
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after_constraint = false;
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}
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for (Line* line : lines) {
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bool isSelected = (mode == Mode::Parallel && line == current_line);
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QPen linePen = isSelected ? QPen(Qt::red, 4) : QPen(Qt::black, 2);
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p.setPen(linePen);
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// Рисуем саму линию
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p.drawLine(QPointF(*line->p1.x, *line->p1.y),
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QPointF(*line->p2.x, *line->p2.y));
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// Рисуем концы — с учётом выделения
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QBrush pointBrush = isSelected ? QBrush(Qt::red) : QBrush(Qt::darkBlue);
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p.setBrush(pointBrush);
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p.setPen(Qt::NoPen); // убираем обводку у кружков
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p.drawEllipse(QPointF(*line->p1.x, *line->p1.y), 5, 5);
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p.drawEllipse(QPointF(*line->p2.x, *line->p2.y), 5, 5);
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}
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// === Подсветка выбранной точки в режиме Coincident ===
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if (mode == Mode::Coincedent && firstPoint) {
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QPointF pt(*firstPoint->x, *firstPoint->y);
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p.setPen(Qt::NoPen);
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p.setBrush(Qt::red);
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p.drawEllipse(pt, 12, 12);
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p.setBrush(Qt::white);
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p.drawEllipse(pt, 8, 8);
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p.setBrush(Qt::red);
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p.drawEllipse(pt, 4, 4); // маленький центр
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}
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// === Текущая рисуемая линия (DrawingLine) ===
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if (current_line && mode == Mode::DrawingLine) {
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// Концы текущей линии — синие точки
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p.setBrush(Qt::blue);
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p.setPen(Qt::NoPen);
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p.drawEllipse(QPointF(*current_line->p1.x, *current_line->p1.y), 6, 6);
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}
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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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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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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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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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