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Reborn of QgsMapToolCircle3Tangents. Thanks Martin!
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Original file line number | Diff line number | Diff line change |
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/*************************************************************************** | ||
qgsmaptoolcircle3tangents.h - map tool for adding circle | ||
from 3 tangents | ||
--------------------- | ||
begin : July 2017 | ||
copyright : (C) 2017 by Loïc Bartoletti | ||
email : lbartoletti at tuxfamily dot org | ||
*************************************************************************** | ||
* * | ||
* This program 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 2 of the License, or * | ||
* (at your option) any later version. * | ||
* * | ||
***************************************************************************/ | ||
|
||
#include "qgsmaptoolcircle3tangents.h" | ||
#include "qgsgeometryrubberband.h" | ||
#include "qgsadvanceddigitizingdockwidget.h" | ||
#include "qgslinestring.h" | ||
#include "qgssnappingutils.h" | ||
#include "qgsmapcanvas.h" | ||
#include "qgspoint.h" | ||
#include "qgisapp.h" | ||
#include <QMouseEvent> | ||
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QgsMapToolCircle3Tangents::QgsMapToolCircle3Tangents( QgsMapToolCapture *parentTool, | ||
QgsMapCanvas *canvas, CaptureMode mode ) | ||
: QgsMapToolAddCircle( parentTool, canvas, mode ) | ||
{ | ||
} | ||
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void QgsMapToolCircle3Tangents::cadCanvasReleaseEvent( QgsMapMouseEvent *e ) | ||
{ | ||
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QgsPoint mapPoint( e->mapPoint() ); | ||
EdgesOnlyFilter filter; | ||
QgsPointLocator::Match match = mCanvas->snappingUtils()->snapToMap( mapPoint, &filter ); | ||
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QgsPointXY p1, p2; | ||
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if ( e->button() == Qt::LeftButton ) | ||
{ | ||
if ( match.isValid() && ( mPoints.size() <= 2 * 2 ) ) | ||
{ | ||
match.edgePoints( p1, p2 ); | ||
mPoints.append( QgsPoint( p1 ) ); | ||
mPoints.append( QgsPoint( p2 ) ); | ||
} | ||
if ( !mPoints.isEmpty() ) | ||
{ | ||
if ( !mTempRubberBand ) | ||
{ | ||
mTempRubberBand = createGeometryRubberBand( ( mode() == CapturePolygon ) ? QgsWkbTypes::PolygonGeometry : QgsWkbTypes::LineGeometry, true ); | ||
mTempRubberBand->show(); | ||
} | ||
std::unique_ptr<QgsLineString> line( new QgsLineString() ); | ||
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line->addVertex( QgsPoint( p1 ) ); | ||
line->addVertex( QgsPoint( p2 ) ); | ||
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mTempRubberBand->setGeometry( line.release() ); | ||
} | ||
} | ||
else if ( e->button() == Qt::RightButton ) | ||
{ | ||
if ( match.isValid() && ( mPoints.size() == 4 ) ) | ||
{ | ||
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match.edgePoints( p1, p2 ); | ||
mPoints.append( QgsPoint( p1 ) ); | ||
mPoints.append( QgsPoint( p2 ) ); | ||
mCircle = QgsCircle().from3Tangents( mPoints.at( 0 ), mPoints.at( 1 ), mPoints.at( 2 ), mPoints.at( 3 ), mPoints.at( 4 ), mPoints.at( 5 ) ); | ||
if ( mCircle.isEmpty() ) | ||
{ | ||
QgisApp::instance()->messageBar()->pushMessage( tr( "Error" ), tr( "At least two segments are parallels" ), QgsMessageBar::WARNING, QgisApp::instance()->messageTimeout() ); | ||
mPoints.clear(); | ||
delete mTempRubberBand; | ||
mTempRubberBand = nullptr; | ||
} | ||
} | ||
deactivate(); | ||
if ( mParentTool ) | ||
{ | ||
mParentTool->canvasReleaseEvent( e ); | ||
} | ||
} | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,39 @@ | ||
/*************************************************************************** | ||
qgsmaptoolcircle3tangents.h - map tool for adding circle | ||
from 3 tangents | ||
--------------------- | ||
begin : July 2017 | ||
copyright : (C) 2017 by Loïc Bartoletti | ||
email : lbartoletti at tuxfamily dot org | ||
*************************************************************************** | ||
* * | ||
* This program 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. * | ||
* * | ||
***************************************************************************/ | ||
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||
#ifndef QGSMAPTOOLCIRCLE3TANGENTS_H | ||
#define QGSMAPTOOLCIRCLE3TANGENTS_H | ||
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#include "qgspointlocator.h" | ||
#include "qgsmaptooladdcircle.h" | ||
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struct EdgesOnlyFilter : public QgsPointLocator::MatchFilter | ||
{ | ||
bool acceptMatch( const QgsPointLocator::Match &m ) override { return m.hasEdge(); } | ||
}; | ||
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class QgsMapToolCircle3Tangents: public QgsMapToolAddCircle | ||
{ | ||
Q_OBJECT | ||
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public: | ||
QgsMapToolCircle3Tangents( QgsMapToolCapture *parentTool, QgsMapCanvas *canvas, CaptureMode mode = CaptureLine ); | ||
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void cadCanvasReleaseEvent( QgsMapMouseEvent *e ) override; | ||
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}; | ||
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#endif // QGSMAPTOOLCIRCLE3TANGENTS_H |
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