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81 lines
2.5 KiB
C++
81 lines
2.5 KiB
C++
/***************************************************************************
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qgmaptoolcircle3points.h - map tool for adding circle
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from 3 points
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---------------------
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begin : July 2017
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copyright : (C) 2017 by Loïc Bartoletti
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email : lbartoletti at tuxfamily dot org
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***************************************************************************
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* *
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* This program 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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* *
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***************************************************************************/
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#include "qgsmaptoolcircle3points.h"
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#include "qgsgeometryrubberband.h"
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#include "qgslinestring.h"
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#include "qgsmapcanvas.h"
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#include "qgspoint.h"
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#include <QMouseEvent>
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QgsMapToolCircle3Points::QgsMapToolCircle3Points( QgsMapToolCapture *parentTool,
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QgsMapCanvas *canvas, CaptureMode mode )
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: QgsMapToolAddCircle( parentTool, canvas, mode )
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{
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}
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void QgsMapToolCircle3Points::cadCanvasReleaseEvent( QgsMapMouseEvent *e )
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{
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QgsPoint mapPoint( e->mapPoint() );
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if ( e->button() == Qt::LeftButton )
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{
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if ( mPoints.size() < 2 )
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mPoints.append( mapPoint );
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if ( !mPoints.isEmpty() && !mTempRubberBand )
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{
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mTempRubberBand = createGeometryRubberBand( ( mode() == CapturePolygon ) ? QgsWkbTypes::PolygonGeometry : QgsWkbTypes::LineGeometry, true );
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mTempRubberBand->show();
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}
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}
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else if ( e->button() == Qt::RightButton )
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{
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deactivate();
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if ( mParentTool )
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{
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mParentTool->canvasReleaseEvent( e );
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}
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}
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}
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void QgsMapToolCircle3Points::cadCanvasMoveEvent( QgsMapMouseEvent *e )
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{
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QgsPoint mapPoint( e->mapPoint() );
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if ( mTempRubberBand )
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{
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switch ( mPoints.size() )
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{
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case 1:
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{
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std::unique_ptr<QgsLineString> line( new QgsLineString() );
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line->addVertex( mPoints.at( 0 ) );
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line->addVertex( mapPoint );
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mTempRubberBand->setGeometry( line.release() );
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}
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break;
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case 2:
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{
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mCircle = QgsCircle().from3Points( mPoints.at( 0 ), mPoints.at( 1 ), mapPoint );
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mTempRubberBand->setGeometry( mCircle.toCircularString( true ) );
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}
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break;
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default:
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break;
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}
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}
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}
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