C++ (Cpp) QgsPoint::m示例

示例#1

文件： qgslinestring.cpp 项目： dbaston/QGIS

bool QgsLineString::insertVertex( QgsVertexId position, const QgsPoint &vertex )
{
  if ( position.vertex < 0 || position.vertex > mX.size() )
  {
    return false;
  }

  if ( mWkbType == QgsWkbTypes::Unknown || mX.isEmpty() )
  {
    setZMTypeFromSubGeometry( &vertex, QgsWkbTypes::LineString );
  }

  mX.insert( position.vertex, vertex.x() );
  mY.insert( position.vertex, vertex.y() );
  if ( is3D() )
  {
    mZ.insert( position.vertex, vertex.z() );
  }
  if ( isMeasure() )
  {
    mM.insert( position.vertex, vertex.m() );
  }
  clearCache(); //set bounding box invalid
  return true;
}

示例#2

文件： qgscircularstring.cpp 项目： enzogis/QGIS

bool QgsCircularString::insertVertex( QgsVertexId position, const QgsPoint &vertex )
{
  if ( position.vertex >= mX.size() || position.vertex < 1 )
  {
    return false;
  }

  mX.insert( position.vertex, vertex.x() );
  mY.insert( position.vertex, vertex.y() );
  if ( is3D() )
  {
    mZ.insert( position.vertex, vertex.z() );
  }
  if ( isMeasure() )
  {
    mM.insert( position.vertex, vertex.m() );
  }

  bool vertexNrEven = ( position.vertex % 2 == 0 );
  if ( vertexNrEven )
  {
    insertVertexBetween( position.vertex - 2, position.vertex - 1, position.vertex );
  }
  else
  {
    insertVertexBetween( position.vertex, position.vertex + 1, position.vertex - 1 );
  }
  clearCache(); //set bounding box invalid
  return true;
}

示例#3

文件： qgsmaptoolidentify.cpp 项目： exlimit/QGIS

void QgsMapToolIdentify::closestVertexAttributes( const QgsAbstractGeometry &geometry, QgsVertexId vId, QgsMapLayer *layer, QMap< QString, QString > &derivedAttributes )
{
  QString str = QLocale::system().toString( vId.vertex + 1 );
  derivedAttributes.insert( tr( "Closest vertex number" ), str );

  QgsPoint closestPoint = geometry.vertexAt( vId );

  QgsPointXY closestPointMapCoords = mCanvas->mapSettings().layerToMapCoordinates( layer, QgsPointXY( closestPoint.x(), closestPoint.y() ) );
  derivedAttributes.insert( QStringLiteral( "Closest vertex X" ), formatXCoordinate( closestPointMapCoords ) );
  derivedAttributes.insert( QStringLiteral( "Closest vertex Y" ), formatYCoordinate( closestPointMapCoords ) );

  if ( closestPoint.is3D() )
  {
    str = QLocale::system().toString( closestPoint.z(), 'g', 10 );
    derivedAttributes.insert( QStringLiteral( "Closest vertex Z" ), str );
  }
  if ( closestPoint.isMeasure() )
  {
    str = QLocale::system().toString( closestPoint.m(), 'g', 10 );
    derivedAttributes.insert( QStringLiteral( "Closest vertex M" ), str );
  }

  if ( vId.type == QgsVertexId::CurveVertex )
  {
    double radius, centerX, centerY;
    QgsVertexId vIdBefore = vId;
    --vIdBefore.vertex;
    QgsVertexId vIdAfter = vId;
    ++vIdAfter.vertex;
    QgsGeometryUtils::circleCenterRadius( geometry.vertexAt( vIdBefore ), geometry.vertexAt( vId ),
                                          geometry.vertexAt( vIdAfter ), radius, centerX, centerY );
    derivedAttributes.insert( QStringLiteral( "Closest vertex radius" ), QLocale::system().toString( radius ) );
  }
}

示例#4

文件： qgsmaptoolidentify.cpp 项目： exlimit/QGIS

void QgsMapToolIdentify::closestPointAttributes( const QgsAbstractGeometry &geometry, QgsMapLayer *layer, const QgsPointXY &layerPoint, QMap< QString, QString > &derivedAttributes )
{
  Q_UNUSED( layer );
  // measure
  if ( QgsWkbTypes::hasM( geometry.wkbType() ) )
  {
    QgsPoint closestPoint = QgsGeometryUtils::closestPoint( geometry, QgsPoint( layerPoint.x(), layerPoint.y() ) );
    QString str = QLocale::system().toString( closestPoint.m(), 'g', 10 );
    derivedAttributes.insert( QStringLiteral( "Closest point M" ), str );
  }
}

示例#5

文件： qgslinestring.cpp 项目： dbaston/QGIS

QgsLineString::QgsLineString( const QgsPoint &p1, const QgsPoint &p2 )
{
  mWkbType = QgsWkbTypes::LineString;
  mX.resize( 2 );
  mX[ 0 ] = p1.x();
  mX[ 1 ] = p2.x();
  mY.resize( 2 );
  mY[ 0 ] = p1.y();
  mY[ 1 ] = p2.y();
  if ( p1.is3D() )
  {
    mWkbType = QgsWkbTypes::addZ( mWkbType );
    mZ.resize( 2 );
    mZ[ 0 ] = p1.z();
    mZ[ 1 ] = p2.z();
  }
  if ( p1.isMeasure() )
  {
    mWkbType = QgsWkbTypes::addM( mWkbType );
    mM.resize( 2 );
    mM[ 0 ] = p1.m();
    mM[ 1 ] = p2.m();
  }
}

示例#6

文件： qgslinestring.cpp 项目： dbaston/QGIS

void QgsLineString::addVertex( const QgsPoint &pt )
{
  if ( mWkbType == QgsWkbTypes::Unknown || mX.isEmpty() )
  {
    setZMTypeFromSubGeometry( &pt, QgsWkbTypes::LineString );
  }

  mX.append( pt.x() );
  mY.append( pt.y() );
  if ( is3D() )
  {
    mZ.append( pt.z() );
  }
  if ( isMeasure() )
  {
    mM.append( pt.m() );
  }
  clearCache(); //set bounding box invalid
}

示例#7

文件： qgslinestring.cpp 项目： dbaston/QGIS

bool QgsLineString::moveVertex( QgsVertexId position, const QgsPoint &newPos )
{
  if ( position.vertex < 0 || position.vertex >= mX.size() )
  {
    return false;
  }
  mX[position.vertex] = newPos.x();
  mY[position.vertex] = newPos.y();
  if ( is3D() && newPos.is3D() )
  {
    mZ[position.vertex] = newPos.z();
  }
  if ( isMeasure() && newPos.isMeasure() )
  {
    mM[position.vertex] = newPos.m();
  }
  clearCache(); //set bounding box invalid
  return true;
}