338 lines
10 KiB
C++
338 lines
10 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 Valentine project, a pattern making
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** program, whose allow create and modeling patterns of clothing.
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** Copyright (C) 2014 Valentina project
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** <https://bitbucket.org/dismine/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 <QTextStream>
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#include <QDebug>
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#include <QtMath>
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//---------------------------------------------------------------------------------------------------------------------
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static inline QPaintEngine::PaintEngineFeatures svgEngineFeatures()
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{
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return QPaintEngine::PaintEngineFeatures(
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QPaintEngine::AllFeatures
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& ~QPaintEngine::PatternBrush
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& ~QPaintEngine::PerspectiveTransform
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& ~QPaintEngine::ConicalGradientFill
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& ~QPaintEngine::PorterDuff);
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}
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//---------------------------------------------------------------------------------------------------------------------
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VObjEngine::VObjEngine()
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:QPaintEngine(svgEngineFeatures()), stream(nullptr), globalPointsCount(0), outputDevice(nullptr), planeCount(0),
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size(), resolution(96), matrix()
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{}
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//---------------------------------------------------------------------------------------------------------------------
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VObjEngine::~VObjEngine()
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{
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outputDevice = nullptr;
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}
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//---------------------------------------------------------------------------------------------------------------------
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bool VObjEngine::begin(QPaintDevice *pdev)
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{
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Q_UNUSED(pdev)
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if (outputDevice == nullptr)
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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 = new QTextStream(outputDevice);
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*stream << "# Valentina OBJ File" << endl;
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*stream << "# www.valentina-project.org/" << endl;
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return true;
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}
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//---------------------------------------------------------------------------------------------------------------------
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bool VObjEngine::end()
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{
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delete stream;
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return true;
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}
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//---------------------------------------------------------------------------------------------------------------------
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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.matrix(); // 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 sq = Square(polygon);
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++planeCount;
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*stream << "o Plane." << QString("%1").arg(planeCount, 3, 10, QLatin1Char('0')) << endl;
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unsigned int num_points = 0;
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for(int i=0; i < polygon.count(); i++)
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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 = polygon.at(i).x();
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points[num_points].y = polygon.at(i).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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bool skipFace=false;//Need skip first face
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for(unsigned int 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 num_verts = 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 p0 = 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 i = 0; i < num_verts; i++ )
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{
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face << QPointF(pf[i]);
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}
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QPolygonF united = polygon.united(face);
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qint64 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" << 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 << QString(" %1").arg(globalPointsCount - pointCount + i + 1);
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}
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*stream << endl;
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}
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void VObjEngine::drawPolygon(const QPoint *points, int pointCount, QPaintEngine::PolygonDrawMode mode)
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{
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QPaintEngine::drawPolygon(points, pointCount, mode);
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}
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//---------------------------------------------------------------------------------------------------------------------
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QPaintEngine::Type VObjEngine::type() const
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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 x = ((points[i].x() - 0)/qFloor(size.width()/2.0)) - 1.0;
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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" << endl;
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++globalPointsCount;
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VObjEngine::drawPoints(const QPoint *points, int pointCount)
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{
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QPaintEngine::drawPoints(points, pointCount);
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}
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//---------------------------------------------------------------------------------------------------------------------
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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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QSize VObjEngine::getSize() const
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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(!isActive());
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size = value;
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}
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//---------------------------------------------------------------------------------------------------------------------
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QIODevice *VObjEngine::getOutputDevice() const
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{
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return outputDevice;
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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(!isActive());
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outputDevice = value;
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}
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//---------------------------------------------------------------------------------------------------------------------
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int VObjEngine::getResolution() const
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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(!isActive());
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resolution = value;
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}
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//---------------------------------------------------------------------------------------------------------------------
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QPolygonF VObjEngine::MakePointsUnique(const QPolygonF &polygon) const
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{
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QVector<QPointF> set;
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QPolygonF uniquePolygon;
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for(int i=0; i < polygon.count(); i++)
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{
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if (set.contains(polygon.at(i)) == false)
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{
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set.append(polygon.at(i));
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uniquePolygon.append(polygon.at(i));
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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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qint64 VObjEngine::Square(const QPolygonF &poly) const
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{
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QVector<qreal> x;
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QVector<qreal> y;
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int 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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