Represents an arc in three-dimensional space, either circular or elliptic. More...

Inheritance diagram for IArc3D:

Public Member Functions
HRESULT	GetBeginAngle ([out, retval] double *pAngle)
	Returns the start angle of the arc, counting from the positive direction of local placement's X axis towards the positive direction of local placement's Y axis.

HRESULT	GetCenter ([out, retval] Point3D *pCenter)
	Returns the center point of the arc. It is equal to the origin of the arc placement.

HRESULT	GetEndAngle ([out, retval] double *pAngle)
	Returns the end angle of the arc, counting from the positive direction of local placement's X axis towards the positive direction of placement's Y axis.

HRESULT	GetPlacement ([out, retval] IPlacement3D **ppPlacement3D)
	Returns the three-dimensional placement of the two-dimensional arc.

HRESULT	GetRadius ([out, retval] double *pPoint3D)
	Returns the radius of a circular arc.

HRESULT	GetRadiusA ([out, retval] double *pRadiusA)
	Returns the semi-major axis of an elliptic arc.

HRESULT	GetRadiusB ([out, retval] double *pRadiusB)
	Returns the semi-minor axis of an elliptic arc.

HRESULT	IsCircular ([out, retval] VARIANT_BOOL *pResult)
	Checks if the arc is circular.

Detailed Description

Represents an arc in three-dimensional space, either circular or elliptic.

Tree-dimensional arc can be thought of as a planar arc whose position in three-dimensional space is characterised by a placement.

Member Function Documentation

◆ GetBeginAngle()

HRESULT GetBeginAngle ( [out, retval] double * pAngle )

Returns the start angle of the arc, counting from the positive direction of local placement's X axis towards the positive direction of local placement's Y axis.

See also: GetPlacement()

◆ GetCenter()

HRESULT GetCenter ( [out, retval] Point3D * pCenter )

Returns the center point of the arc. It is equal to the origin of the arc placement.

See also: GetPlacement()

◆ GetEndAngle()

HRESULT GetEndAngle ( [out, retval] double * pAngle )

Returns the end angle of the arc, counting from the positive direction of local placement's X axis towards the positive direction of placement's Y axis.

See also: GetPlacement()

◆ GetRadius()

HRESULT GetRadius ( [out, retval] double * pPoint3D )

Returns the radius of a circular arc.

Returns zero for elliptic arcs.

◆ GetRadiusA()

HRESULT GetRadiusA ( [out, retval] double * pRadiusA )

Returns the semi-major axis of an elliptic arc.

Returns the same value as GetRadius() for circular arcs.

◆ GetRadiusB()

HRESULT GetRadiusB ( [out, retval] double * pRadiusB )

Returns the semi-minor axis of an elliptic arc.