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Where two wires cross without being connected, a project can now draw a small arc (a hop) on one of them, instead of the user inserting a jump symbol and splitting the wire. It is a project setting, off by default: Project properties > Général > "Croisements de conducteurs", with no hops, hops on horizontal wires, or hops on vertical wires. Choosing the orientation rather than following drawing order keeps a project consistent. Only the drawing changes: no element is added and no wire is split. A wire that ends or bends on another one is a junction and never hops, and a crossing too close to the end of a segment for the arc to fit is drawn plainly. PDF, SVG and image export and printing show the hops, since they paint through Conductor::paint(); DXF export, which writes the segments itself, does not. The setting is saved as <wire_crossings hop="..."/> under the project root, next to <usage>, and only when hops are on, so a project that never used them saves exactly as before. The geometry is in wirehops.cpp, free of any graphics item, and tested on its own. Conductor::paintedPath() feeds it the conductors of the folio from a snapshot of their scene points, rebuilt only when a conductor changes shape, moves, or enters or leaves a folio; each hop path is cached the same way. Asking the scene for the conductors in a rect instead strokes every candidate's shape, which made a 366-wire folio render 0.6 s slower; with the snapshot the difference is within measurement noise. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
64 lines
2.1 KiB
C++
64 lines
2.1 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 WIREHOPS_H
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#define WIREHOPS_H
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#include <QList>
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#include <QPainterPath>
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#include <QPointF>
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#include <QString>
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#include <QVector>
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/**
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@brief The WireHops namespace
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Hops (small arcs) drawn where two wires cross without being connected
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(issue #436). Only the drawing changes: no element is added and no wire
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is split. Kept free of any QGraphicsItem so the geometry can be tested
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on its own.
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Wires in QElectroTech are made of horizontal and vertical segments
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only, so a crossing is a segment of one orientation passing through a
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segment of the other, away from the ends of both. A wire that ends or
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bends on another one is a junction, not a crossing, and never hops.
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*/
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namespace WireHops
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{
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///Which wire of a crossing draws the hop
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enum class Mode {
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None, ///< no hop, the default: crossings are drawn as plain lines
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Horizontal, ///< the horizontal wire hops over the vertical one
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Vertical ///< the vertical wire hops over the horizontal one
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};
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///Radius of a hop, in scene units (a grid step is 10)
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constexpr qreal radius = 4.0;
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QString toString(Mode mode);
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Mode fromString(const QString &string);
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QList<QPointF> crossings(const QVector<QPointF> &wire,
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const QList<QVector<QPointF>> &others,
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Mode mode);
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QPainterPath path(const QVector<QPointF> &wire,
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const QList<QPointF> &hops,
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Mode mode);
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}
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#endif // WIREHOPS_H
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