Some static methods performing geometrical operations. More...

#include <GeomHelper.h>

Static Public Member Functions
static double	angle2D (const Position &p1, const Position &p2)
	Returns the angle between two vectors on a plane The angle is from vector 1 to vector 2, positive anticlockwise The result is between -pi and pi.

static double	angleDiff (const double angle1, const double angle2)
	Returns the difference of the second angle to the first angle in radiants.

static double	calculateLotSpaceAngle (const PositionVector &shape, const int index, const double spaceDim, const double angle)
	calculate lotSpace angle

static const Position	calculateLotSpacePosition (const PositionVector &shape, const int index, const double spaceDim, const double angle, const double width, const double length)
	calculate lotSpace position

static double	calculateLotSpaceSlope (const PositionVector &shape, const int index, const double spaceDim)
	calculate lotSpace slope

static Position	crossPoint (const Boundary &b, const PositionVector &v)

static void	findLineCircleIntersections (const Position &c, double radius, const Position &p1, const Position &p2, std::vector< double > &into)
	Returns the positions the given circle is crossed by the given line.

static double	fromNaviDegree (const double angle)

static double	getCCWAngleDiff (double angle1, double angle2)
	Returns the distance of second angle from first angle counter-clockwise.

static double	getCWAngleDiff (double angle1, double angle2)
	Returns the distance of second angle from first angle clockwise.

static double	getMinAngleDiff (double angle1, double angle2)
	Returns the minimum distance (clockwise/counter-clockwise) between both angles.

static double	legacyDegree (const double angle, const bool positive=false)

static PositionVector	makeCircle (const double radius, const Position &center, unsigned int nPoints)

static PositionVector	makeRing (const double radius1, const double radius2, const Position &center, unsigned int nPoints)

static double	naviDegree (const double angle)

static double	nearest_offset_on_line_to_point25D (const Position &lineStart, const Position &lineEnd, const Position &p, bool perpendicular=true)

static double	nearest_offset_on_line_to_point2D (const Position &lineStart, const Position &lineEnd, const Position &p, bool perpendicular=true)

Static Public Attributes
static const double	INVALID_OFFSET = -1
	a value to signify offsets outside the range of [0, Line.length()]

Detailed Description

Some static methods performing geometrical operations.

Definition at line 46 of file GeomHelper.h.

Member Function Documentation

◆ angle2D()

double GeomHelper::angle2D	(	const Position &	p1,
		const Position &	p2
	)

static

Returns the angle between two vectors on a plane The angle is from vector 1 to vector 2, positive anticlockwise The result is between -pi and pi.

Definition at line 82 of file GeomHelper.cpp.

References angleDiff(), Position::x(), and Position::y().

Referenced by PositionVector::around(), and NGRandomNetBuilder::checkAngles().

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◆ angleDiff()

double GeomHelper::angleDiff	(	const double	angle1,
		const double	angle2
	)

static

Returns the difference of the second angle to the first angle in radiants.

The results are always between -pi and pi. Positive values denote that the second angle is counter clockwise closer, negative values mean it is clockwise closer.

Parameters

[in]	angle1	The first angle
[in]	angle2	The second angle

Returns: angle starting from first to second angle

Definition at line 178 of file GeomHelper.cpp.

References M_PI.

Referenced by angle2D(), libsumo::Helper::applySubscriptionFilterFieldOfVision(), NBNodeShapeComputer::badIntersection(), NBNode::bezierControlPoints(), NBEdge::buildInnerEdges(), NBNode::buildWalkingAreas(), NBEdge::checkGeometry(), NBNodeShapeComputer::computeNodeShapeDefault(), GNENet::createRoundabout(), NBEdge::cutAtIntersection(), NIVissimEdge::dict_checkEdges2Join(), EnergyParams::getAngleDiff(), NBNodeShapeComputer::getDefaultRadius(), NBContHelper::edge_opposite_direction_sorter::getDiff(), NBNodeShapeComputer::getSmoothCorner(), MSLane::handleCollisionBetween(), MSLink::isInFront(), MSLink::isOnComingPed(), NIVissimConnectionCluster::isWeakDistrictConnRealisation(), NBNodeShapeComputer::joinSameDirectionEdges(), PositionVector::localAngle(), MSLane::incoming_lane_priority_sorter::operator()(), MSLane::by_connections_to_sorter::operator()(), MSLane::outgoing_lane_priority_sorter::operator()(), NIVissimConnectionCluster::same_direction_sorter::operator()(), MSLink::setRequestInformation(), NBRailwayGeometryHelper::straigthenCorrdidor(), and NWWriter_OpenDrive::writeGeomSmooth().

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◆ calculateLotSpaceAngle()

double GeomHelper::calculateLotSpaceAngle	(	const PositionVector &	shape,
		const int	index,
		const double	spaceDim,
		const double	angle
	)

static

calculate lotSpace angle

Definition at line 319 of file GeomHelper.cpp.

References M_PI, PositionVector::positionAtOffset(), Position::x(), and Position::y().

Referenced by MSParkingArea::setRoadsideCapacity(), and GNEParkingArea::updateGeometry().

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◆ calculateLotSpacePosition()

const Position GeomHelper::calculateLotSpacePosition	(	const PositionVector &	shape,
		const int	index,
		const double	spaceDim,
		const double	angle,
		const double	width,
		const double	length
	)

static

calculate lotSpace position

Definition at line 280 of file GeomHelper.cpp.

References M_PI, PositionVector::positionAtOffset(), Position::setx(), Position::sety(), Position::setz(), Position::x(), Position::y(), and Position::z().

Referenced by MSParkingArea::setRoadsideCapacity(), and GNEParkingArea::updateGeometry().

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◆ calculateLotSpaceSlope()

double GeomHelper::calculateLotSpaceSlope	(	const PositionVector &	shape,
		const int	index,
		const double	spaceDim
	)

static

calculate lotSpace slope

Definition at line 329 of file GeomHelper.cpp.

References PositionVector::slopeDegreeAtOffset().

Referenced by MSParkingArea::setRoadsideCapacity().

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◆ crossPoint()

Position GeomHelper::crossPoint	(	const Boundary &	b,
		const PositionVector &	v
	)

static

Definition at line 127 of file GeomHelper.cpp.

References PositionVector::intersectionPosition2D(), PositionVector::intersects(), Boundary::xmax(), Boundary::xmin(), Boundary::ymax(), and Boundary::ymin().

Referenced by NIVissimConnectionCluster::getPositionForEdge().

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◆ findLineCircleIntersections()

void GeomHelper::findLineCircleIntersections	(	const Position &	c,
		double	radius,
		const Position &	p1,
		const Position &	p2,
		std::vector< double > &	into
	)

static

Returns the positions the given circle is crossed by the given line.

Parameters

[in]	c	The center position of the circle
[in]	radius	The radius of the circle
[in]	p1	The begin of the line
[in]	p2	The end of the line
	[filled]	into The list of crossing positions (0-1 along the line's length)

See also: http://blog.csharphelper.com/2010/03/28/determine-where-a-line-intersects-a-circle-in-c.aspx; http://gamedev.stackexchange.com/questions/18333/circle-line-collision-detection-problem (jazzdawg)

Definition at line 46 of file GeomHelper.cpp.

References Position::x(), and Position::y().

Referenced by MSDevice_BTreceiver::BTreceiverUpdate::updateVisibility().

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◆ fromNaviDegree()

double GeomHelper::fromNaviDegree ( const double angle )

static

Converts an angle from navigational degrees to mathematical radians.

See also: naviDegree

Parameters

[in] angle The angle in degree to convert

Returns: the angle in radians

Definition at line 208 of file GeomHelper.cpp.

References DEG2RAD, and M_PI.

Referenced by MSVehicle::loadState(), MSPModel_Striping::PState::moveToXY(), and MSVehicle::Influencer::postProcessRemoteControl().

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◆ getCCWAngleDiff()

double GeomHelper::getCCWAngleDiff	(	double	angle1,
		double	angle2
	)

static

Returns the distance of second angle from first angle counter-clockwise.

Parameters

[in]	angle1	The first angle
[in]	angle2	The second angle

Returns: Angle (counter-clockwise) starting from first to second angle

Definition at line 152 of file GeomHelper.cpp.

Referenced by NBNode::computeLanes2Lanes(), getMinAngleDiff(), and NBNode::isLeftMover().

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◆ getCWAngleDiff()

double GeomHelper::getCWAngleDiff	(	double	angle1,
		double	angle2
	)

static

Returns the distance of second angle from first angle clockwise.

Parameters

[in]	angle1	The first angle
[in]	angle2	The second angle

Returns: Angle (clockwise) starting from first to second angle

Definition at line 162 of file GeomHelper.cpp.

Referenced by NBNode::computeLanes2Lanes(), getMinAngleDiff(), NBNode::isLeftMover(), and NBNode::rightTurnConflict().

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◆ getMinAngleDiff()

double GeomHelper::getMinAngleDiff	(	double	angle1,
		double	angle2
	)

static

Returns the minimum distance (clockwise/counter-clockwise) between both angles.

Parameters

[in]	angle1	The first angle
[in]	angle2	The second angle

Returns: The minimum distance between both angles

Definition at line 172 of file GeomHelper.cpp.

References getCCWAngleDiff(), getCWAngleDiff(), and MIN2().

Referenced by NBOwnTLDef::getBestCombination(), NBEdgeCont::joinTramEdges(), NBEdgePriorityComputer::markBestParallel(), MSPModel_Striping::PState::moveToXY(), libsumo::Helper::moveToXYMap(), NBEdgePriorityComputer::setPriorityJunctionPriorities(), and MSLink::setRequestInformation().

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◆ legacyDegree()

double GeomHelper::legacyDegree	(	const double	angle,
		const bool	positive = `false`
	)

static

Converts an angle from mathematical radians where 0 is to the right and positive angles are counterclockwise to the legacy degrees used in sumo where 0 is down and positive means clockwise. If positive is true the result is in the range [0, 360), otherwise in the range [-180, 180).

Parameters

[in] angle The angle in radians to convert

Returns: the angle in degrees

Definition at line 214 of file GeomHelper.cpp.

References M_PI, and RAD2DEG.

Referenced by NBEdge::computeAngle(), NBEdge::getAngleAtNode(), NBEdge::getAngleAtNodeNormalized(), NBTurningDirectionsComputer::getFarAngleAtNode(), NBEdge::getShapeEndAngle(), NBEdge::getShapeStartAngle(), NBEdgeCont::joinTramEdges(), NBContHelper::relative_outgoing_edge_sorter::operator()(), NBContHelper::relative_incoming_edge_sorter::operator()(), and PositionVector::rotationDegreeAtOffset().

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◆ makeCircle()

PositionVector GeomHelper::makeCircle	(	const double	radius,
		const Position &	center,
		unsigned int	nPoints
	)

static

Creates a circular polygon

Parameters

[in]	radius	Radius of the circle
[in]	center	Position of the circle's center
[in]	nPoints	Number of points of the circle (Polygon's shape will have noPoints+1 points), must be >=3

Returns: the polygon approximating the circle

Definition at line 235 of file GeomHelper.cpp.

References PositionVector::add(), M_PI, TL, and WRITE_ERROR.

◆ makeRing()

PositionVector GeomHelper::makeRing	(	const double	radius1,
		const double	radius2,
		const Position &	center,
		unsigned int	nPoints
	)

static

Creates a circular polygon

Parameters

[in]	radius1	Inner radius of the ring
[in]	radius2	Outer radius of the ring
[in]	center	Position of the circle's center
[in]	nPoints	Number of points of the circle (Polygon's shape will have noPoints+1 points), must be >=3

Returns: the polygon approximating the circle

Definition at line 252 of file GeomHelper.cpp.

References PositionVector::add(), M_PI, and WRITE_ERROR.

Referenced by LIBSUMO_NAMESPACE::POI::highlight(), and LIBSUMO_NAMESPACE::Vehicle::highlight().

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◆ naviDegree()

double GeomHelper::naviDegree ( const double angle )

static

Converts an angle from mathematical radians where 0 is to the right and positive angles are counterclockwise to navigational degrees where 0 is up and positive means clockwise. The result is always in the range [0, 360).

Parameters

[in] angle The angle in radians to convert

Returns: the angle in degrees

Definition at line 191 of file GeomHelper.cpp.

References M_PI, and RAD2DEG.

Referenced by MSVehicle::computeAngle(), GLHelper::drawTriangleAtEnd(), NIImporter_OpenDrive::geomFromSpiral(), LIBSUMO_NAMESPACE::Lane::getAngle(), LIBSUMO_NAMESPACE::Person::getAngle(), LIBSUMO_NAMESPACE::Vehicle::getAngle(), GUILane::getColorValueWithFunctional(), GUIBaseVehicle::getNaviDegree(), GUIPerson::getNaviDegree(), GNELane::getPopUpMenu(), MSPModel_Striping::PState::moveTo(), LIBSUMO_NAMESPACE::Person::moveToXY(), LIBSUMO_NAMESPACE::Vehicle::moveToXY(), MSPModel_Striping::PState::moveToXY(), libsumo::Helper::moveToXYMap(), MSVehicle::saveState(), GUILane::setFunctionalColor(), GUIContainer::setFunctionalColor(), GUIBaseVehicle::setFunctionalColor(), GUIPerson::setFunctionalColor(), GNELane::setFunctionalColor(), MSLink::setRequestInformation(), MSFCDExport::write(), MSEmissionExport::write(), NBSign::writeAsPOI(), MSFCDExport::writeTransportable(), MSXMLRawOut::writeTransportable(), and MSFullExport::writeVehicles().

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◆ nearest_offset_on_line_to_point25D()

double GeomHelper::nearest_offset_on_line_to_point25D	(	const Position &	lineStart,
		const Position &	lineEnd,
		const Position &	p,
		bool	perpendicular = `true`
	)

static

Definition at line 114 of file GeomHelper.cpp.

References Position::distanceTo(), Position::distanceTo2D(), INVALID_OFFSET, and nearest_offset_on_line_to_point2D().

◆ nearest_offset_on_line_to_point2D()

double GeomHelper::nearest_offset_on_line_to_point2D	(	const Position &	lineStart,
		const Position &	lineEnd,
		const Position &	p,
		bool	perpendicular = `true`
	)

static

Definition at line 88 of file GeomHelper.cpp.

References Position::distanceTo2D(), INVALID_OFFSET, Position::x(), and Position::y().

Referenced by NGRandomNetBuilder::canConnect(), NIVissimConnectionCluster::getPositionForEdge(), PositionVector::insertAtClosest(), NIVissimConnectionCluster::liesOnSameEdgesEnd(), nearest_offset_on_line_to_point25D(), PositionVector::nearest_offset_to_point25D(), PositionVector::nearest_offset_to_point2D(), NBEdgeCont::splitAt(), and PositionVector::transformToVectorCoordinates().

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Field Documentation

◆ INVALID_OFFSET

const double GeomHelper::INVALID_OFFSET = -1

static

a value to signify offsets outside the range of [0, Line.length()]

Definition at line 50 of file GeomHelper.h.

Referenced by libsumo::Helper::applySubscriptionFilterLateralDistanceSinglePass(), NGRandomNetBuilder::canConnect(), PositionVector::distance2D(), PositionVector::distances(), GNEEdge::editEndpoint(), NBEdge::extendGeometryAtNode(), PositionVector::getOrthogonal(), NBEdgeCont::joinTramEdges(), NWWriter_OpenDrive::mapmatchRoadObjects(), LIBSUMO_NAMESPACE::Person::moveToXY(), LIBSUMO_NAMESPACE::Vehicle::moveToXY(), libsumo::Helper::moveToXYMap(), nearest_offset_on_line_to_point25D(), nearest_offset_on_line_to_point2D(), PositionVector::nearest_offset_to_point25D(), PositionVector::nearest_offset_to_point2D(), PositionVector::offsetAtIndex2D(), PositionVector::transformToVectorCoordinates(), NWWriter_OpenDrive::writeRoadObjectPOI(), and NWWriter_OpenDrive::writeRoadObjectPoly().

The documentation for this class was generated from the following files:

Static Public Member Functions

Static Public Attributes

Detailed Description

Member Function Documentation

◆ angle2D()

◆ angleDiff()

◆ calculateLotSpaceAngle()

◆ calculateLotSpacePosition()

◆ calculateLotSpaceSlope()

◆ crossPoint()

◆ findLineCircleIntersections()

◆ fromNaviDegree()

◆ getCCWAngleDiff()

◆ getCWAngleDiff()

◆ getMinAngleDiff()

◆ legacyDegree()

◆ makeCircle()

◆ makeRing()

◆ naviDegree()

◆ nearest_offset_on_line_to_point25D()

◆ nearest_offset_on_line_to_point2D()

Field Documentation

◆ INVALID_OFFSET