348 lines
7.9 KiB
C++
348 lines
7.9 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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void Canvas::changeMode(Mode _mode)
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{
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mode = _mode;
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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->get_tag() < obj2->get_tag()) ? std::make_pair(obj1, obj2) : std::make_pair(obj2, obj1);
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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->p1;
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else if (dist_P2P(p2, pos) <= tolerance)
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temp = &line->p2;
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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, bool mode)
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{
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int tag_0 = p1->get_tag(), tag_1 = p2->get_tag();
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if (!mode){
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return (tag_0 != tag_1 && *p1 == *p2);
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}
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else {
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for (PointPair pair : P2Ppairs) {
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int pair_tag_0 = pair.first->get_tag();
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int pair_tag_1 = pair.second->get_tag();
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if (pair_tag_0 == tag_0 && pair_tag_1 == tag_1 ||
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pair_tag_0 == tag_1 && pair_tag_1 == tag_0)
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return true;
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}
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return false;
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}
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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)) > 0;
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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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}
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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(Point(x1, y1, obj_count));
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points.push_back(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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}
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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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points.pop_back();
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points.pop_back();
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params.pop_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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sys.addConstraintParallel(*found, *current_line, constraints_count++);
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parallelPairs.insert(makeOrderedPair<LinePair>(found, current_line));
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current_line = nullptr;
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update();
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mode = Mode::None;
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after_constraint = true;
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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->p1 == firstPoint || &l->p2 == firstPoint) l1 = l;
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if (&l->p1 == clickedPoint || &l->p2 == clickedPoint) l2 = l;
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}
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if (l1 == l2 ||
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(areCoincident(firstPoint, clickedPoint, true)))
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{
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QMessageBox::warning(this, QString("NO!"), QString("P2P failed"));
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firstPoint = nullptr;
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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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P2Ppairs.insert(makeOrderedPair<PointPair>(clickedPoint, firstPoint));
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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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*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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}
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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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}
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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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sys.removeConstraint(sys.get_last_constraint());
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constraints_count--;
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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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QPen pen(Qt::blue, 3, Qt::DashLine);
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p.setPen(pen);
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p.setBrush(Qt::transparent);
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p.drawLine(QPointF(*current_line->p1.x, *current_line->p1.y),
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QPointF(*current_line->p2.x, *current_line->p2.y));
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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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p.drawEllipse(QPointF(*current_line->p2.x, *current_line->p2.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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current_line = nullptr;
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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 (Line* line : lines) {
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delete line;
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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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lines.clear();
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params.clear();
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points.clear();
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parallelPairs.clear();
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P2Ppairs.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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