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A new conductor gets the default two or three straight segments, which run through whatever symbol or wire lies between its terminals; scripts then fix it segment by segment with moveConductorSegment(). ConductorRouter finds an orthogonal path on the folio grid that leaves and enters each terminal in its own direction, keeps clear of every element's rectangle, stays inside the border, and charges for bends and for running along or crossing other wires. qet.routeConductor() and qet.routeConductorBetween() apply it through Conductor::setPathPoints(), which pushes the same ChangeConductorCommand a handle drag does, so the path is saved, survives a reload, and one undo restores the default. Where no route exists the wire keeps its path and the call says so. qet-mcp: add_conductor takes "route": "avoid", and a route_conductor op reroutes an existing conductor (by terminal or by uuid). The router methods are required only by an edit that routes. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
78 lines
2.6 KiB
C++
78 lines
2.6 KiB
C++
/*
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Copyright 2006-2026 The QElectroTech Team
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This file is part of QElectroTech.
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QElectroTech is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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QElectroTech is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with QElectroTech. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-2.0-or-later
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#ifndef CONDUCTORROUTER_H
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#define CONDUCTORROUTER_H
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#include <QList>
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#include <QPointF>
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#include <QRectF>
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#include <QString>
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#include <QVector>
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/**
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@brief The ConductorRouter namespace
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Finds a path for a conductor that goes around obstacles -- the bounding
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rectangles of the symbols on the folio -- instead of the default two or
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three straight segments, which run through whatever lies between the two
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terminals. Kept free of any QGraphicsItem so the geometry can be tested
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on its own.
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The path is made of horizontal and vertical segments only, like every
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conductor. It leaves each terminal in the terminal's own direction,
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runs on the folio grid, and is the cheapest one found by a search that
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charges for length, for every bend, and for running along or crossing
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the wires already drawn.
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*/
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namespace ConductorRouter
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{
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///The direction a terminal points, outward from its symbol.
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///Same order as Qet::Orientation.
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enum class Direction { North, East, South, West };
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struct Request
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{
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QPointF start; ///< the first terminal's docking point
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Direction start_direction = Direction::North;
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QPointF end; ///< the second terminal's docking point
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Direction end_direction = Direction::North;
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///Areas no segment may cross. A margin is added to each.
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QList<QRectF> obstacles;
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///The other wires on the folio, each as its list of points.
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///Running along one or crossing one costs extra.
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QList<QVector<QPointF>> wires;
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///The route stays inside this, when it is valid (the folio).
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QRectF bounds;
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qreal grid = 10.0;
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///Added around each obstacle, so a route keeps clear of it
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qreal margin = 5.0;
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};
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struct Result
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{
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///From start to end, both included; empty if none was found
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QList<QPointF> points;
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///Why there is no route, when points is empty
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QString error;
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};
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Result route(const Request &request);
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}
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#endif // CONDUCTORROUTER_H
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