C++ (Cpp) QgsPointV2::isMeasure示例

示例#1

文件： qgsmaptoolidentify.cpp 项目： mterente/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 );

  QgsPointV2 closestPoint = geometry.vertexAt( vId );

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

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

示例#2

文件： qgslinestringv2.cpp 项目： saberraz/QGIS

bool QgsLineStringV2::moveVertex( const QgsVertexId& position, const QgsPointV2& 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();
  }
  mBoundingBox = QgsRectangle(); //set bounding box invalid
  return true;
}

示例#3

文件： qgscircularstring.cpp 项目： cayetanobv/QGIS

bool QgsCircularString::moveVertex( QgsVertexId position, const QgsPointV2 &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;
}

示例#4

文件： qgsmaptoolidentify.cpp 项目： nicanor-b/QGIS

void QgsMapToolIdentify::closestVertexAttributes( const QgsAbstractGeometryV2& geometry, QgsVertexId vId, QgsMapLayer *layer, QMap< QString, QString >& derivedAttributes )
{
  QString str = QLocale::system().toString( vId.vertex + 1 );
  derivedAttributes.insert( tr( "Closest vertex number" ), str );

  QgsPointV2 closestPoint = geometry.vertexAt( vId );

  QgsPoint closestPointMapCoords = mCanvas->mapSettings().layerToMapCoordinates( layer, QgsPoint( closestPoint.x(), closestPoint.y() ) );
  str = QLocale::system().toString( closestPointMapCoords.x(), 'g', 10 );
  derivedAttributes.insert( "Closest vertex X", str );
  str = QLocale::system().toString( closestPointMapCoords.y(), 'g', 10 );
  derivedAttributes.insert( "Closest vertex Y", str );

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