Tool namespace for performing geometric operations on a WEMPatch. More...

Functions
MLWEM_EXPORT bool	isPointInsideWEMPatch (const Vector3 &position, WEMPatch *wemPatch)
	Returns whether the given point is inside the given WEMPatch. More...

MLWEM_EXPORT bool	isLineIntersectingFace (const Vector3 &startPos, const Vector3 &endPos, WEMFace face, WEMPatch wemPatch=nullptr)
	Returns whether the given line (from startPos to endPos) intersects the given WEMFace. The wemPatch parameter is not in use and per default NULL. More...

MLWEM_EXPORT bool	isLineIntersectingFace (Vector3 &intersectionPoint, const Vector3 &startPos, const Vector3 &endPos, WEMFace face, WEMPatch wemPatch=nullptr)
	Returns whether the given line (from startPos to endPos) intersects the given WEMFace and fills up the intersection point. More...

MLWEM_EXPORT bool	pointInsidePolygon (const Vector3 &point, const Vector3 *polygon, unsigned int numPoints)
	Returns whether the given point lies inside the polygon, given by the list of points. More...

MLWEM_EXPORT bool	isPointOnEdgeOrNode (const Vector3 &position, WEMFace *face)
	Returns whether the given point lies on any node or edge of the given face. More...

MLWEM_EXPORT bool	isPointOnFace (const Vector3 &position, WEMFace *face)
	Returns whether the given point lies on any face of the given face. More...

MLWEM_EXPORT bool	isPointInsideFace (const Vector3 &point, const WEMFace *face)
	Returns whether the given point is in the given face. More...

MLWEM_EXPORT bool	checkForEdgeNodeCrossing (const Vector3 &rayStart, const Vector3 &rayEnd, WEMFace *face)
	Returns whether the given ray crosses any edge or node of the given face. More...

MLWEM_EXPORT double	computeSegmentSegmentDistance (const Vector3 &start0, const Vector3 &end0, const Vector3 &start1, const Vector3 &end1, Vector3 &intersectionPoint)
	Returns the minimum distance between the two given segments. If this distance is 0, the intersectionPoint is valid. More...

MLWEM_EXPORT double	computePointSegmentDistance (const Vector3 &point, const Vector3 &segmentStart, const Vector3 &segmentEnd)
	Returns the shortest distance of a given point to a segment, given by its start and end point. More...

MLWEM_EXPORT double	computePointPlaneDistance (const Vector3 &point, const WEMFace *face)
	Returns the distance of the given point to a plane, defined by the WEMFace (first position and normal of the face). More...

MLWEM_EXPORT double	computePointTriangleDistance (const Vector3 &point, const WEMTriangle *triangle)
	Returns the distance of the given point to the given triangle. More...

bool	doLineSegmentsIntersect2D (const Vector2 &s1, const Vector2 &e1, const Vector2 &s2, const Vector2 &e2)

bool	isOnSegmentFor2DSegmentIntersectionTest (double xi, double yi, double xj, double yj, double xk, double yk)

char	computeDirectionFor2DSegmentIntersectionTest (double xi, double yi, double xj, double yj, double xk, double yk)

Detailed Description

Tool namespace for performing geometric operations on a WEMPatch.

If you are looking for fast WEM ray intersection, have a look at the WEMBoundingVolumeHierarchy class in the MLWEMAcceleration project.

Function Documentation

◆ checkForEdgeNodeCrossing()

MLWEM_EXPORT bool ml::WEMGeometry::checkForEdgeNodeCrossing	(	const Vector3 &	rayStart,
		const Vector3 &	rayEnd,
		WEMFace *	face
	)

Returns whether the given ray crosses any edge or node of the given face.

◆ computeDirectionFor2DSegmentIntersectionTest()

char ml::WEMGeometry::computeDirectionFor2DSegmentIntersectionTest	(	double	xi,
		double	yi,
		double	xj,
		double	yj,
		double	xk,
		double	yk
	)

◆ computePointPlaneDistance()

MLWEM_EXPORT double ml::WEMGeometry::computePointPlaneDistance	(	const Vector3 &	point,
		const WEMFace *	face
	)

Returns the distance of the given point to a plane, defined by the WEMFace (first position and normal of the face).

◆ computePointSegmentDistance()

MLWEM_EXPORT double ml::WEMGeometry::computePointSegmentDistance	(	const Vector3 &	point,
		const Vector3 &	segmentStart,
		const Vector3 &	segmentEnd
	)

Returns the shortest distance of a given point to a segment, given by its start and end point.

◆ computePointTriangleDistance()

MLWEM_EXPORT double ml::WEMGeometry::computePointTriangleDistance	(	const Vector3 &	point,
		const WEMTriangle *	triangle
	)

Returns the distance of the given point to the given triangle.

◆ computeSegmentSegmentDistance()

MLWEM_EXPORT double ml::WEMGeometry::computeSegmentSegmentDistance	(	const Vector3 &	start0,
		const Vector3 &	end0,
		const Vector3 &	start1,
		const Vector3 &	end1,
		Vector3 &	intersectionPoint
	)

Returns the minimum distance between the two given segments. If this distance is 0, the intersectionPoint is valid.

◆ doLineSegmentsIntersect2D()

bool ml::WEMGeometry::doLineSegmentsIntersect2D	(	const Vector2 &	s1,
		const Vector2 &	e1,
		const Vector2 &	s2,
		const Vector2 &	e2
	)

◆ isLineIntersectingFace() [1/2]

MLWEM_EXPORT bool ml::WEMGeometry::isLineIntersectingFace	(	const Vector3 &	startPos,
		const Vector3 &	endPos,
		WEMFace *	face,
		WEMPatch *	wemPatch = `nullptr`
	)

Returns whether the given line (from startPos to endPos) intersects the given WEMFace. The wemPatch parameter is not in use and per default NULL.

◆ isLineIntersectingFace() [2/2]

MLWEM_EXPORT bool ml::WEMGeometry::isLineIntersectingFace	(	Vector3 &	intersectionPoint,
		const Vector3 &	startPos,
		const Vector3 &	endPos,
		WEMFace *	face,
		WEMPatch *	wemPatch = `nullptr`
	)

Returns whether the given line (from startPos to endPos) intersects the given WEMFace and fills up the intersection point.

◆ isOnSegmentFor2DSegmentIntersectionTest()

bool ml::WEMGeometry::isOnSegmentFor2DSegmentIntersectionTest	(	double	xi,
		double	yi,
		double	xj,
		double	yj,
		double	xk,
		double	yk
	)

◆ isPointInsideFace()

MLWEM_EXPORT bool ml::WEMGeometry::isPointInsideFace	(	const Vector3 &	point,
		const WEMFace *	face
	)

Returns whether the given point is in the given face.

◆ isPointInsideWEMPatch()

MLWEM_EXPORT bool ml::WEMGeometry::isPointInsideWEMPatch	(	const Vector3 &	position,
		WEMPatch *	wemPatch
	)

Returns whether the given point is inside the given WEMPatch.

A point is considered to be inside if it lies exactly on a node, edge, or face.

◆ isPointOnEdgeOrNode()

MLWEM_EXPORT bool ml::WEMGeometry::isPointOnEdgeOrNode	(	const Vector3 &	position,
		WEMFace *	face
	)

Returns whether the given point lies on any node or edge of the given face.

◆ isPointOnFace()

MLWEM_EXPORT bool ml::WEMGeometry::isPointOnFace	(	const Vector3 &	position,
		WEMFace *	face
	)

Returns whether the given point lies on any face of the given face.

◆ pointInsidePolygon()

MLWEM_EXPORT bool ml::WEMGeometry::pointInsidePolygon	(	const Vector3 &	point,
		const Vector3 *	polygon,
		unsigned int	numPoints
	)

Returns whether the given point lies inside the polygon, given by the list of points.

Both, the point and the polygon, must be projected onto the x-y plane before.

Functions