valentina/src/libs/vobj/vobjengine.cpp

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/************************************************************************
**
** @file vobjengine.cpp
** @author Roman Telezhynskyi <dismine(at)gmail.com>
** @date 12 12, 2014
**
** @brief
** @copyright
** This source code is part of the Valentina project, a pattern making
** program, whose allow create and modeling patterns of clothing.
** Copyright (C) 2013-2015 Valentina project
** <https://gitlab.com/smart-pattern/valentina> All Rights Reserved.
**
** Valentina is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** Valentina is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with Valentina. If not, see <http://www.gnu.org/licenses/>.
**
*************************************************************************/
#include "vobjengine.h"
#include <QByteArray>
#include <QFlag>
#include <QFlags>
#include <QIODevice>
#include <QLatin1Char>
#include <QMessageLogger>
#include <QPaintEngineState>
#include <QPainterPath>
#include <QPointF>
#include <QString>
#include <QTextStream>
#include <QVector>
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#include <Qt>
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#include <QtDebug>
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#if QT_VERSION < QT_VERSION_CHECK(5, 5, 0)
#include "../vmisc/diagnostic.h"
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#endif // QT_VERSION < QT_VERSION_CHECK(5, 5, 0)
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#include "../vmisc/defglobal.h"
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#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
#include "../vmisc/backport/text.h"
#endif
class QPaintDevice;
class QPixmap;
class QPoint;
class QPointF;
class QPolygonF;
class QRectF;
#include <ciso646>
//---------------------------------------------------------------------------------------------------------------------
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static inline auto svgEngineFeatures() -> QPaintEngine::PaintEngineFeatures
{
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QT_WARNING_PUSH
QT_WARNING_DISABLE_CLANG("-Wsign-conversion")
// cppcheck-suppress unknownMacro
QT_WARNING_DISABLE_INTEL(68)
QT_WARNING_DISABLE_INTEL(2022)
return QPaintEngine::PaintEngineFeatures(QPaintEngine::AllFeatures & ~QPaintEngine::PatternBrush &
~QPaintEngine::PerspectiveTransform & ~QPaintEngine::ConicalGradientFill &
~QPaintEngine::PorterDuff);
QT_WARNING_POP
}
//---------------------------------------------------------------------------------------------------------------------
VObjEngine::VObjEngine()
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: QPaintEngine(svgEngineFeatures()),
stream(),
globalPointsCount(0),
outputDevice(),
planeCount(0),
size(),
resolution(96),
matrix()
{
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for (int i = 0; i < MAX_POINTS; i++)
{
points[i].x = 0;
points[i].y = 0;
}
}
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#if defined(Q_CC_INTEL)
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#pragma warning(pop)
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#endif
//---------------------------------------------------------------------------------------------------------------------
VObjEngine::~VObjEngine()
{
}
//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::begin(QPaintDevice *pdev) -> bool
{
Q_UNUSED(pdev)
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if (outputDevice.isNull())
{
qWarning("VObjEngine::begin(), no output device");
return false;
}
if (outputDevice->isOpen() == false)
{
if (outputDevice->open(QIODevice::WriteOnly | QIODevice::Text | QIODevice::Truncate) == false)
{
qWarning("VObjEngine::begin(), could not open output device: '%s'",
qPrintable(outputDevice->errorString()));
return false;
}
}
else if (outputDevice->isWritable() == false)
{
qWarning("VObjEngine::begin(), could not write to read-only output device: '%s'",
qPrintable(outputDevice->errorString()));
return false;
}
if (size.isValid() == false)
{
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qWarning() << "VObjEngine::begin(), size is not valid";
return false;
}
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stream = QSharedPointer<QTextStream>(new QTextStream(outputDevice.data()));
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*stream << "# Valentina OBJ File" << Qt::endl;
*stream << "# smart-pattern.com.ua/" << Qt::endl;
return true;
}
//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::end() -> bool
{
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stream.reset();
return true;
}
//---------------------------------------------------------------------------------------------------------------------
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// cppcheck-suppress unusedFunction
void VObjEngine::updateState(const QPaintEngineState &state)
{
QPaintEngine::DirtyFlags flags = state.state();
// always stream full gstate, which is not required, but...
flags |= QPaintEngine::AllDirty;
if (flags & QPaintEngine::DirtyTransform)
{
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matrix = state.transform(); // Save new matrix for moving paths
}
}
//---------------------------------------------------------------------------------------------------------------------
void VObjEngine::drawPath(const QPainterPath &path)
{
QPolygonF polygon = path.toFillPolygon(matrix);
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polygon = MakePointsUnique(polygon); // Points must be unique
if (polygon.size() < 3)
{
return;
}
qint64 sq = Square(polygon);
++planeCount;
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*stream << "o Plane." << QString("%1").arg(planeCount, 3, 10, QLatin1Char('0')) << Qt::endl;
quint32 num_points = 0;
for (auto &p : polygon)
{
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if (num_points < MAX_POINTS)
{
points[num_points].x = p.x();
points[num_points].y = p.y();
num_points++;
}
}
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++)
{
if (offset == 0)
{
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skipFace = true;
}
else
{
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skipFace = false;
}
int num_verts = static_cast<int>(res->faces[offset]);
offset++;
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for (int j = 0; j < num_verts; j++)
{
int p0 = static_cast<int>(res->faces[offset + j]);
pf[j] = QPointF(points[p0].x, points[p0].y);
}
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if (skipFace == false)
{
QPolygonF face;
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for (int ind = 0; ind < num_verts; ind++)
{
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face << QPointF(pf[ind]);
}
QPolygonF united = polygon.united(face);
qint64 sqUnited = Square(united);
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if (sqUnited <= sq)
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{ // This face incide our base polygon.
drawPolygon(pf, num_verts, QPaintEngine::OddEvenMode);
}
}
offset += num_verts;
}
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delaunay2d_release(res); // Don't forget release data
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*stream << "s off" << Qt::endl;
}
//---------------------------------------------------------------------------------------------------------------------
void VObjEngine::drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode)
{
Q_UNUSED(mode)
drawPoints(points, pointCount);
*stream << "f";
for (int i = 0; i < pointCount; ++i)
{
*stream << QString(" %1").arg(static_cast<int>(globalPointsCount) - pointCount + i + 1);
}
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*stream << Qt::endl;
}
//---------------------------------------------------------------------------------------------------------------------
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void VObjEngine::drawPolygon(const QPoint *points, int pointCount, QPaintEngine::PolygonDrawMode mode)
{
QPaintEngine::drawPolygon(points, pointCount, mode);
}
//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::type() const -> QPaintEngine::Type
{
return QPaintEngine::User;
}
//---------------------------------------------------------------------------------------------------------------------
void VObjEngine::drawPoints(const QPointF *points, int pointCount)
{
for (int i = 0; i < pointCount; ++i)
{
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qreal x = ((points[i].x() - 0) / qFloor(size.width() / 2.0)) - 1.0;
qreal y = (((points[i].y() - 0) / qFloor(size.width() / 2.0)) - 1.0) * -1;
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*stream << "v"
<< " " << QString::number(x, 'f', 6) << " " << QString::number(y, 'f', 6) << " "
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<< "0.000000" << Qt::endl;
++globalPointsCount;
}
}
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//---------------------------------------------------------------------------------------------------------------------
void VObjEngine::drawPoints(const QPoint *points, int pointCount)
{
QPaintEngine::drawPoints(points, pointCount);
}
//---------------------------------------------------------------------------------------------------------------------
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// cppcheck-suppress unusedFunction
void VObjEngine::drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr)
{
Q_UNUSED(r)
Q_UNUSED(pm)
Q_UNUSED(sr)
}
//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::getSize() const -> QSize
{
return size;
}
//---------------------------------------------------------------------------------------------------------------------
void VObjEngine::setSize(const QSize &value)
{
Q_ASSERT(not isActive());
size = value;
}
//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::getOutputDevice() const -> QIODevice *
{
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return outputDevice.data();
}
//---------------------------------------------------------------------------------------------------------------------
void VObjEngine::setOutputDevice(QIODevice *value)
{
Q_ASSERT(not isActive());
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outputDevice.reset(value);
}
//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::getResolution() const -> int
{
return resolution;
}
//---------------------------------------------------------------------------------------------------------------------
void VObjEngine::setResolution(int value)
{
Q_ASSERT(not isActive());
resolution = value;
}
//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::MakePointsUnique(const QPolygonF &polygon) const -> QPolygonF
{
QVector<QPointF> set;
QPolygonF uniquePolygon;
for (auto p : polygon)
{
if (set.contains(p) == false)
{
set.append(p);
uniquePolygon.append(p);
}
}
return uniquePolygon;
}
//---------------------------------------------------------------------------------------------------------------------
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auto VObjEngine::Square(const QPolygonF &poly) const -> qint64
{
QVector<qreal> x;
QVector<qreal> y;
vsizetype n = poly.count();
qreal s, res = 0;
qint64 sq = 0;
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for (int i = 0; i < n; i++)
{
x.append(poly.at(i).x());
y.append(poly.at(i).y());
}
// Calculation a polygon area through the sum of the areas of trapezoids
for (int i = 0; i < n; i++)
{
if (i == 0)
{
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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]
res += s;
}
else
{
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if (i == n - 1)
{
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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]
res += s;
}
else
{
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s = x.at(i) * (y.at(i - 1) - y.at(i + 1));
res += s;
}
}
}
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sq = qFloor(qAbs(res / 2.0));
return sq;
}