C++ (Cpp) const_iterator::y Examples

Example #1

File: qgscircularstring.cpp Project: cayetanobv/QGIS

QgsRectangle QgsCircularString::segmentBoundingBox( const QgsPointV2 &pt1, const QgsPointV2 &pt2, const QgsPointV2 &pt3 )
{
  double centerX, centerY, radius;
  QgsGeometryUtils::circleCenterRadius( pt1, pt2, pt3, radius, centerX, centerY );

  double p1Angle = QgsGeometryUtils::ccwAngle( pt1.y() - centerY, pt1.x() - centerX );
  if ( p1Angle > 360 )
  {
    p1Angle -= 360;
  }
  double p2Angle = QgsGeometryUtils::ccwAngle( pt2.y() - centerY, pt2.x() - centerX );
  if ( p2Angle > 360 )
  {
    p2Angle -= 360;
  }
  double p3Angle = QgsGeometryUtils::ccwAngle( pt3.y() - centerY, pt3.x() - centerX );
  if ( p3Angle > 360 )
  {
    p3Angle -= 360;
  }

  //start point, end point and compass points in between can be on bounding box
  QgsRectangle bbox( pt1.x(), pt1.y(), pt1.x(), pt1.y() );
  bbox.combineExtentWith( pt3.x(), pt3.y() );

  QgsPointSequence compassPoints = compassPointsOnSegment( p1Angle, p2Angle, p3Angle, centerX, centerY, radius );
  QgsPointSequence::const_iterator cpIt = compassPoints.constBegin();
  for ( ; cpIt != compassPoints.constEnd(); ++cpIt )
  {
    bbox.combineExtentWith( cpIt->x(), cpIt->y() );
  }
  return bbox;
}

Example #2

File: qgsmaptoolcapture.cpp Project: alexbruy/QGIS

int QgsMapToolCapture::addCurve( QgsCurve *c )
{
  if ( !c )
  {
    return 1;
  }

  if ( !mRubberBand )
  {
    mRubberBand = createRubberBand( mCaptureMode == CapturePolygon ? QgsWkbTypes::PolygonGeometry : QgsWkbTypes::LineGeometry );
  }

  QgsLineString *lineString = c->curveToLine();
  QgsPointSequence linePoints;
  lineString->points( linePoints );
  delete lineString;
  QgsPointSequence::const_iterator ptIt = linePoints.constBegin();
  for ( ; ptIt != linePoints.constEnd(); ++ptIt )
  {
    mRubberBand->addPoint( QgsPointXY( ptIt->x(), ptIt->y() ) );
  }

  if ( !mTempRubberBand )
  {
    mTempRubberBand = createRubberBand( mCaptureMode == CapturePolygon ? QgsWkbTypes::PolygonGeometry : QgsWkbTypes::LineGeometry, true );
  }
  else
  {
    mTempRubberBand->reset();
  }
  QgsPoint endPt = c->endPoint();
  mTempRubberBand->addPoint( QgsPointXY( endPt.x(), endPt.y() ) ); //add last point of c

  //transform back to layer CRS in case map CRS and layer CRS are different
  QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( mCanvas->currentLayer() );
  QgsCoordinateTransform ct = mCanvas->mapSettings().layerTransform( vlayer );
  if ( ct.isValid() )
  {
    c->transform( ct, QgsCoordinateTransform::ReverseTransform );
  }
  mCaptureCurve.addCurve( c );
  for ( int i = 0; i < c->length(); ++i )
    mSnappingMatches.append( QgsPointLocator::Match() );

  return 0;
}