375 lines
11 KiB
C++
375 lines
11 KiB
C++
/************************************************************************
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**
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** @file vobjengine.cpp
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** @author Roman Telezhynskyi <dismine(at)gmail.com>
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** @date 12 12, 2014
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**
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** @brief
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** @copyright
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** This source code is part of the Valentina project, a pattern making
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** program, whose allow create and modeling patterns of clothing.
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** Copyright (C) 2013-2015 Valentina project
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** <https://gitlab.com/smart-pattern/valentina> All Rights Reserved.
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**
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** Valentina 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 3 of the License, or
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** (at your option) any later version.
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**
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** Valentina 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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**
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** You should have received a copy of the GNU General Public License
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** along with Valentina. If not, see <http://www.gnu.org/licenses/>.
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**
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*************************************************************************/
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#include "vobjengine.h"
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#include <QByteArray>
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#include <QFlag>
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#include <QFlags>
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#include <QIODevice>
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#include <QLatin1Char>
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#include <QMessageLogger>
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#include <QPaintEngineState>
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#include <QPainterPath>
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#include <QPointF>
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#include <QString>
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#include <QTextStream>
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#include <QVector>
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#include <QtDebug>
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#include <QtMath>
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#include "../vmisc/defglobal.h"
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// Header <ciso646> is removed in C++20.
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#if __cplusplus <= 201703L
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#include <ciso646> // and, not, or
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#endif
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#if QT_VERSION < QT_VERSION_CHECK(6, 4, 0)
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#include "../vmisc/compatibility.h"
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#endif
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using namespace Qt::Literals::StringLiterals;
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class QPaintDevice;
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class QPixmap;
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class QPoint;
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class QPointF;
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class QPolygonF;
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class QRectF;
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//---------------------------------------------------------------------------------------------------------------------
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static inline auto svgEngineFeatures() -> QPaintEngine::PaintEngineFeatures
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{
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QT_WARNING_PUSH
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QT_WARNING_DISABLE_CLANG("-Wsign-conversion")
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// cppcheck-suppress unknownMacro
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QT_WARNING_DISABLE_INTEL(68)
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QT_WARNING_DISABLE_INTEL(2022)
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return {QPaintEngine::AllFeatures & ~QPaintEngine::PatternBrush & ~QPaintEngine::PerspectiveTransform &
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~QPaintEngine::ConicalGradientFill & ~QPaintEngine::PorterDuff};
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QT_WARNING_POP
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}
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//---------------------------------------------------------------------------------------------------------------------
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VObjEngine::VObjEngine()
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: QPaintEngine(svgEngineFeatures()),
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stream(),
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globalPointsCount(0),
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outputDevice(),
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planeCount(0),
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size(),
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resolution(96),
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matrix()
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{
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for (int i = 0; i < MAX_POINTS; i++)
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{
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points[i].x = 0;
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points[i].y = 0;
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}
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}
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#if defined(Q_CC_INTEL)
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#pragma warning(pop)
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#endif
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//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::begin(QPaintDevice *pdev) -> bool
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{
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Q_UNUSED(pdev)
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if (outputDevice.isNull())
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{
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qWarning("VObjEngine::begin(), no output device");
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return false;
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}
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if (outputDevice->isOpen() == false)
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{
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if (outputDevice->open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Truncate) == false)
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{
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qWarning("VObjEngine::begin(), could not open output device: '%s'",
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qPrintable(outputDevice->errorString()));
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return false;
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}
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}
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else if (outputDevice->isWritable() == false)
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{
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qWarning("VObjEngine::begin(), could not write to read-only output device: '%s'",
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qPrintable(outputDevice->errorString()));
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return false;
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}
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if (size.isValid() == false)
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{
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qWarning() << "VObjEngine::begin(), size is not valid";
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return false;
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}
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stream = QSharedPointer<QTextStream>(new QTextStream(outputDevice.data()));
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*stream << "# Valentina OBJ File" << Qt::endl;
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*stream << "# smart-pattern.com.ua/" << Qt::endl;
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return true;
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::end() -> bool
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{
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stream.reset();
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return true;
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}
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//---------------------------------------------------------------------------------------------------------------------
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// cppcheck-suppress unusedFunction
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void VObjEngine::updateState(const QPaintEngineState &state)
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{
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QPaintEngine::DirtyFlags flags = state.state();
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// always stream full gstate, which is not required, but...
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flags |= QPaintEngine::AllDirty;
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if (flags & QPaintEngine::DirtyTransform)
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{
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matrix = state.transform(); // Save new matrix for moving paths
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VObjEngine::drawPath(const QPainterPath &path)
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{
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QPolygonF polygon = path.toFillPolygon(matrix);
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polygon = MakePointsUnique(polygon); // Points must be unique
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if (polygon.size() < 3)
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{
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return;
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}
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qint64 const sq = Square(polygon);
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++planeCount;
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*stream << "o Plane." << u"%1"_s.arg(planeCount, 3, 10, '0'_L1) << Qt::endl;
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quint32 num_points = 0;
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for (auto &p : polygon)
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{
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if (num_points < MAX_POINTS)
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{
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points[num_points].x = p.x();
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points[num_points].y = p.y();
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num_points++;
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}
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}
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int offset = 0;
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delaunay2d_t *res = delaunay2d_from(points, num_points); // Calculate faces
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QPointF pf[MAX_POINTS];
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// cppcheck-suppress unreadVariable
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bool skipFace = false; // Need skip first face
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for (quint32 i = 0; i < res->num_faces; i++)
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{
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if (offset == 0)
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{
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skipFace = true;
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}
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else
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{
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skipFace = false;
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}
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int const num_verts = static_cast<int>(res->faces[offset]);
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offset++;
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for (int j = 0; j < num_verts; j++)
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{
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int const p0 = static_cast<int>(res->faces[offset + j]);
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pf[j] = QPointF(points[p0].x, points[p0].y);
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}
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if (skipFace == false)
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{
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QPolygonF face;
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for (int ind = 0; ind < num_verts; ind++)
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{
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face << QPointF(pf[ind]);
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}
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QPolygonF const united = polygon.united(face);
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qint64 const sqUnited = Square(united);
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if (sqUnited <= sq)
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{ // This face incide our base polygon.
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drawPolygon(pf, num_verts, QPaintEngine::OddEvenMode);
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}
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}
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offset += num_verts;
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}
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delaunay2d_release(res); // Don't forget release data
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*stream << "s off" << Qt::endl;
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VObjEngine::drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode)
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{
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Q_UNUSED(mode)
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drawPoints(points, pointCount);
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*stream << "f";
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for (int i = 0; i < pointCount; ++i)
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{
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*stream << u" %1"_s.arg(static_cast<int>(globalPointsCount) - pointCount + i + 1);
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}
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*stream << Qt::endl;
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::type() const -> QPaintEngine::Type
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{
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return QPaintEngine::User;
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VObjEngine::drawPoints(const QPointF *points, int pointCount)
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{
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for (int i = 0; i < pointCount; ++i)
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{
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qreal const x = ((points[i].x() - 0) / qFloor(size.width() / 2.0)) - 1.0;
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qreal const y = (((points[i].y() - 0) / qFloor(size.width() / 2.0)) - 1.0) * -1;
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*stream << "v"
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<< " " << QString::number(x, 'f', 6) << " " << QString::number(y, 'f', 6) << " "
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<< "0.000000" << Qt::endl;
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++globalPointsCount;
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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// cppcheck-suppress unusedFunction
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void VObjEngine::drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr)
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{
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Q_UNUSED(r)
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Q_UNUSED(pm)
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Q_UNUSED(sr)
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::getSize() const -> QSize
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{
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return size;
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VObjEngine::setSize(const QSize &value)
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{
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Q_ASSERT(not isActive());
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size = value;
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::getOutputDevice() const -> QIODevice *
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{
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return outputDevice.data();
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VObjEngine::setOutputDevice(QIODevice *value)
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{
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Q_ASSERT(not isActive());
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outputDevice.reset(value);
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::getResolution() const -> int
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{
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return resolution;
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VObjEngine::setResolution(int value)
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{
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Q_ASSERT(not isActive());
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resolution = value;
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::MakePointsUnique(const QPolygonF &polygon) const -> QPolygonF
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{
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QVector<QPointF> set;
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QPolygonF uniquePolygon;
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for (auto p : polygon)
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{
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if (set.contains(p) == false)
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{
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set.append(p);
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uniquePolygon.append(p);
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}
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}
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return uniquePolygon;
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}
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//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::Square(const QPolygonF &poly) const -> qint64
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{
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QVector<qreal> x;
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QVector<qreal> y;
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vsizetype const n = poly.count();
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qreal s, res = 0;
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qint64 sq = 0;
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for (int i = 0; i < n; i++)
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{
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x.append(poly.at(i).x());
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y.append(poly.at(i).y());
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}
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// Calculation a polygon area through the sum of the areas of trapezoids
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for (int i = 0; i < n; i++)
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{
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if (i == 0)
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{
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s = x.at(i) * (y.at(n - 1) - y.at(i + 1)); // if i == 0, then y[i-1] replace on y[n-1]
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res += s;
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}
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else
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{
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if (i == n - 1)
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{
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s = x.at(i) * (y.at(i - 1) - y.at(0)); // if i == n-1, then y[i+1] replace on y[0]
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res += s;
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}
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else
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{
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s = x.at(i) * (y.at(i - 1) - y.at(i + 1));
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res += s;
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}
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}
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}
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sq = qFloor(qAbs(res / 2.0));
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return sq;
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}
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