PARP Research Group

Universidad de Murcia

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src/qvip/qvpolyline.cpp Go to the documentation of this file. /* * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012. PARP Research Group. * <http://perception.inf.um.es> * University of Murcia, Spain. * * This file is part of the QVision library. * * QVision is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation, version 3 of the License. * * QVision 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with QVision. If not, see <http://www.gnu.org/licenses/>. */ #include <iostream> #include <float.h> #include <qvmath.h> #include <qvdefines.h> //#include <qvmatrixalgebra.h> #include <QVPolyline> #include <QVPolylineF> QVPolyline::QVPolyline(const int estimatedSize): QList<QPoint>(), closed(false), direction(false) { qDebug() << "QVPolyline()"; if (estimatedSize > 0) #ifdef QT_MIN_VERSION_4_7 QList<QPoint>::reserve(estimatedSize); #else Q_WARNING("cannot reserve a size for Qt versions older than 4.7"); #endif // QT_MIN_VERSION_4_7 qDebug() << "QVPolyline() <~ return"; }; QVPolyline::QVPolyline(const QVPolyline &polyline): QList<QPoint>(polyline), closed(polyline.closed), direction(polyline.direction) { qDebug() << "QVPolyline(const QVPolyline &)"; qDebug() << "QVPolyline(const QVPolyline &) <~ return"; }; QVPolyline::QVPolyline(const QVPolylineF &polyline): QList<QPoint>(), closed(polyline.closed), direction(polyline.direction) { foreach(QPointF pointf, polyline) { append( QPoint(pointf.toPoint()) ); } qDebug() << "QVPolylineF(const QVPolylineF &)"; qDebug() << "QVPolylineF(const QVPolylineF &) <~ return"; }; QVPolyline QVPolyline::ellipse(uInt n, float x, float y, float maxRadio, float minRadio, float ang) { QVPolyline ellipse; float w = 2*PI/(n-1); float maxArg = (maxRadio+minRadio)/2; float minArg = (maxRadio-minRadio)/2; for (uInt t = 0; t < n; t++) ellipse.append(QPoint ( (uInt) (x + maxArg*cos(ang+w*t) + minArg*cos(ang-w*t)), (uInt) (y + maxArg*sin(ang+w*t) + minArg*sin(ang-w*t)) )); return ellipse; } QVPolyline QVPolyline::rectangle(int x1, int y1, int x2, int y2) { QVPolyline rectangle; rectangle.append(QPoint( x1, y1 )); rectangle.append(QPoint( x1, y2 )); rectangle.append(QPoint( x2, y2 )); rectangle.append(QPoint( x2, y1 )); rectangle.append(QPoint( x1, y1 )); return rectangle; } QVPolyline QVPolyline::line(int x1, int y1, int x2, int y2) { QVPolyline line; line.append(QPoint( x1, y1 )); if (x1 == x2 && y1 == y2) return line; int i,dx,dy,sdx,sdy,dxabs,dyabs,x,y,px,py; dx=x2-x1; // the horizontal distance of the line dy=y2-y1; // the vertical distance of the line dxabs=abs(dx); dyabs=abs(dy); sdx=SIGN(dx); sdy=SIGN(dy); x=dyabs>>1; y=dxabs>>1; px=x1; py=y1; if (dxabs>=dyabs) // the line is more horizontal than vertical for(i=0;i<dxabs;i++) { y+=dyabs; if (y>=dxabs) { y-=dxabs; py+=sdy; } px+=sdx; line.append(QPoint( px, py )); } else // the line is more vertical than horizontal for(i=0;i<dyabs;i++) { x+=dxabs; if (x>=dyabs) { x-=dyabs; px+=sdx; } py+=sdy; line.append(QPoint( px, py )); } return line; } QVPolyline::operator QVPolylineF() const { QVPolylineF polyline; foreach(QPoint point, *this) { polyline.append(QPointF(point)); } return polyline; } std::ostream& operator << ( std::ostream &os, const QVPolyline &polyline) { const int size = polyline.size(); os << "QVPolyline (" << size << ")" ; os << " [" ; for (int i=0; i < size; i++) { os << " (" << polyline[i].x() << "," << polyline[i].y() << ")"; if(i!=size-1) os << ","; else os << " "; } os << "]" ; return os; }

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QVision framework. PARP research group. Copyright © 2007, 2008, 2009, 2010, 2011.