code cleanup and improved readability in circular maptools

Author: SebDieBln

src/app/qgsmaptooladdcircularstring.cpp

@@ -83,7 +83,6 @@ void QgsMapToolAddCircularString::keyPressEvent( QKeyEvent* e )
   if ( e && e->key() == Qt::Key_R )
   {
     mShowCenterPointRubberBand = true;
-
     createCenterPointRubberBand();
   }
 }
@@ -176,10 +175,7 @@ void QgsMapToolAddCircularString::createCenterPointRubberBand()
     const QgsAbstractGeometryV2* rubberBandGeom = mTempRubberBand->geometry();
     if ( rubberBandGeom )
     {
-      QgsVertexId idx;
-      idx.part = 0;
-      idx.ring = 0;
-      idx.vertex = 2;
+      QgsVertexId idx( 0, 0, 2 );
       QgsPointV2 pt = rubberBandGeom->vertexAt( idx );
       updateCenterPointRubberBand( pt );
     }
@@ -206,17 +202,17 @@ void QgsMapToolAddCircularString::updateCenterPointRubberBand( const QgsPointV2&
   csPoints.append( pt );
   cs->setPoints( csPoints );
 
-  double centerX, centerY;
+  QgsPointV2 center;
   double radius;
-  QgsGeometryUtils::circleCenterRadius( csPoints.at( 0 ), csPoints.at( 1 ), csPoints.at( 2 ), radius, centerX, centerY );
+  QgsGeometryUtils::circleCenterRadius( csPoints.at( 0 ), csPoints.at( 1 ), csPoints.at( 2 ), radius, center.rx(), center.ry() );
 
   QgsLineStringV2* segment1 = new QgsLineStringV2();
-  segment1->addVertex( QgsPointV2( centerX, centerY ) );
+  segment1->addVertex( center );
   segment1->addVertex( csPoints.at( 0 ) );
 
   QgsLineStringV2* segment2 = new QgsLineStringV2();
   segment2->addVertex( csPoints.at( 2 ) );
-  segment2->addVertex( QgsPointV2( centerX, centerY ) );
+  segment2->addVertex( center );
 
   QgsCompoundCurveV2* cc = new QgsCompoundCurveV2();
   cc->addCurve( segment1 );

src/app/qgsmaptoolcircularstringcurvepoint.cpp

@@ -19,7 +19,7 @@ QgsMapToolCircularStringCurvePoint::~QgsMapToolCircularStringCurvePoint()
 
 void QgsMapToolCircularStringCurvePoint::cadCanvasReleaseEvent( QgsMapMouseEvent* e )
 {
-  QgsPointV2 mapPoint( e->mapPoint().x(), e->mapPoint().y() );
+  QgsPointV2 mapPoint( e->mapPoint() );
 
   if ( e->button() == Qt::LeftButton )
   {
@@ -29,7 +29,7 @@ void QgsMapToolCircularStringCurvePoint::cadCanvasReleaseEvent( QgsMapMouseEvent
       createCenterPointRubberBand();
     }
 
-    if ( mPoints.size() >= 1 )
+    if ( !mPoints.isEmpty() )
     {
       if ( !mTempRubberBand )
       {
@@ -43,7 +43,7 @@ void QgsMapToolCircularStringCurvePoint::cadCanvasReleaseEvent( QgsMapMouseEvent
       c->setPoints( rubberBandPoints );
       mTempRubberBand->setGeometry( c );
     }
-    if ( mPoints.size() > 1 && ( mPoints.size() ) % 2 == 1 )
+    if ( mPoints.size() > 1 && mPoints.size() % 2 )
     {
       if ( !mRubberBand )
       {
@@ -71,11 +71,8 @@ void QgsMapToolCircularStringCurvePoint::cadCanvasReleaseEvent( QgsMapMouseEvent
 
 void QgsMapToolCircularStringCurvePoint::cadCanvasMoveEvent( QgsMapMouseEvent* e )
 {
-  QgsPointV2 mapPoint( e->mapPoint().x(), e->mapPoint().y() );
-  QgsVertexId idx;
-  idx.part = 0;
-  idx.ring = 0;
-  idx.vertex = 1 + ( mPoints.size() + 1 ) % 2;
+  QgsPointV2 mapPoint( e->mapPoint() );
+  QgsVertexId idx( 0, 0, 1 + ( mPoints.size() + 1 ) % 2 );
   if ( mTempRubberBand )
   {
     mTempRubberBand->moveVertex( idx, mapPoint );

src/app/qgsmaptoolcircularstringradius.cpp

@@ -27,8 +27,7 @@
 
 QgsMapToolCircularStringRadius::QgsMapToolCircularStringRadius( QgsMapToolCapture* parentTool, QgsMapCanvas* canvas, CaptureMode mode )
     : QgsMapToolAddCircularString( parentTool, canvas, mode ),
-    mTemporaryEndPointX( 0.0 ),
-    mTemporaryEndPointY( 0.0 ),
+    mTemporaryEndPoint( QgsPointV2() ),
     mRadius( 0.0 ),
     mRadiusSpinBox( nullptr )
 {
@@ -48,7 +47,7 @@ void QgsMapToolCircularStringRadius::deactivate()
 
 void QgsMapToolCircularStringRadius::cadCanvasReleaseEvent( QgsMapMouseEvent* e )
 {
-  QgsPointV2 mapPoint( e->mapPoint().x(), e->mapPoint().y() );
+  QgsPointV2 mapPoint( e->mapPoint() );
 
   if ( e->button() == Qt::LeftButton )
   {
@@ -60,15 +59,14 @@ void QgsMapToolCircularStringRadius::cadCanvasReleaseEvent( QgsMapMouseEvent* e
     {
       if ( mPoints.size() % 2 )
       {
-        mTemporaryEndPointX = mapPoint.x();
-        mTemporaryEndPointY = mapPoint.y();
+        mTemporaryEndPoint = mapPoint;
 
         //initial radius is distance( tempPoint - mPoints.last ) / 2.0
-        double minRadius = sqrt( QgsGeometryUtils::sqrDistance2D( mPoints.last(), QgsPointV2( mTemporaryEndPointX, mTemporaryEndPointY ) ) ) / 2.0;
+        double minRadius = sqrt( QgsGeometryUtils::sqrDistance2D( mPoints.last(), mTemporaryEndPoint ) ) / 2.0;
         mRadius = minRadius + minRadius / 10.0;
 
         QgsPointV2 result;
-        if ( QgsGeometryUtils::segmentMidPoint( mPoints.last(), QgsPointV2( mTemporaryEndPointX, mTemporaryEndPointY ), result, mRadius, QgsPointV2( mapPoint.x(), mapPoint.y() ) ) )
+        if ( QgsGeometryUtils::segmentMidPoint( mPoints.last(), mTemporaryEndPoint, result, mRadius, QgsPointV2( mapPoint.x(), mapPoint.y() ) ) )
         {
           mPoints.append( result );
           createRadiusSpinBox();
@@ -80,7 +78,7 @@ void QgsMapToolCircularStringRadius::cadCanvasReleaseEvent( QgsMapMouseEvent* e
       }
       else
       {
-        mPoints.append( QgsPointV2( mTemporaryEndPointX, mTemporaryEndPointY ) );
+        mPoints.append( mTemporaryEndPoint );
         deleteRadiusSpinBox();
       }
       recalculateCircularString();
@@ -102,10 +100,9 @@ void QgsMapToolCircularStringRadius::cadCanvasMoveEvent( QgsMapMouseEvent* e )
 {
   if ( !mPoints.isEmpty() )
   {
-    mLastMouseMapPos.setX( e->mapPoint().x() );
-    mLastMouseMapPos.setY( e->mapPoint().y() );
+    mLastMouseMapPos = QgsPointV2( e->mapPoint() );
     recalculateCircularString();
-    updateCenterPointRubberBand( QgsPointV2( mTemporaryEndPointX, mTemporaryEndPointY ) );
+    updateCenterPointRubberBand( mTemporaryEndPoint );
   }
 }
 
@@ -127,15 +124,15 @@ void QgsMapToolCircularStringRadius::recalculateCircularString()
   {
     //recalculate midpoint on circle segment
     QgsPointV2 midPoint;
-    if ( !QgsGeometryUtils::segmentMidPoint( mPoints.at( mPoints.size() - 2 ), QgsPointV2( mTemporaryEndPointX, mTemporaryEndPointY ), midPoint, mRadius,
+    if ( !QgsGeometryUtils::segmentMidPoint( mPoints.at( mPoints.size() - 2 ), mTemporaryEndPoint, midPoint, mRadius,
          mLastMouseMapPos ) )
     {
       return;
     }
     mPoints.replace( mPoints.size() - 1, midPoint );
     rubberBandPoints.append( mPoints.at( mPoints.size() - 2 ) );
     rubberBandPoints.append( mPoints.last() );
-    rubberBandPoints.append( QgsPointV2( mTemporaryEndPointX, mTemporaryEndPointY ) );
+    rubberBandPoints.append( mTemporaryEndPoint );
   }
   else
   {
@@ -165,13 +162,12 @@ void QgsMapToolCircularStringRadius::createRadiusSpinBox()
 
 void QgsMapToolCircularStringRadius::deleteRadiusSpinBox()
 {
-  if ( !mRadiusSpinBox )
+  if ( mRadiusSpinBox )
   {
-    return;
+    QgisApp::instance()->statusBar()->removeWidget( mRadiusSpinBox );
+    delete mRadiusSpinBox;
+    mRadiusSpinBox = nullptr;
   }
-  QgisApp::instance()->statusBar()->removeWidget( mRadiusSpinBox );
-  delete mRadiusSpinBox;
-  mRadiusSpinBox = nullptr;
 }
 
 void QgsMapToolCircularStringRadius::updateRadiusFromSpinBox( double radius )

src/app/qgsmaptoolcircularstringradius.h

@@ -37,15 +37,16 @@ class QgsMapToolCircularStringRadius: public QgsMapToolAddCircularString
     void updateRadiusFromSpinBox( double radius );
 
   private:
-    double mTemporaryEndPointX;
-    double mTemporaryEndPointY;
+    QgsPointV2 mTemporaryEndPoint;
     double mRadius;
     QgsPointV2 mLastMouseMapPos;
     QDoubleSpinBox* mRadiusSpinBox;
 
-    //recalculate circular string and rubber band depending on mRadius/mLeft and endpoints
+    //! recalculate the rubberband and the temporary rubberband
     void recalculateCircularString();
+    //! (re-)create the spin box to enter the radius
     void createRadiusSpinBox();
+    //! delete the spin box to enter the radius, if it exists
     void deleteRadiusSpinBox();
 };