CIP C++ documentation for class "pfcGeomCurve"

Class pfcGeomCurve

# include <pfcGeometry.h> class pfcGeomCurve : public virtual pfcObject { xaideclare(pfcGeomCurve) ... };

Description

This class provides information for a geometry curve or edge.

Manual References:: Geometry Evaluation: Curve and Edge Types, Geometry Evaluation: Evaluation of Curves and Edges

Direct Known Subclasses:: pfcEdge, pfcCurve

Method Summary


`pfcCurveXYZData_ptr`	`Eval3DData (xreal Param)`
	Returns a `pfcCurveXYZData` object with information on the point represented by input parameter t.

`pfcCurveXYZData_ptr`	`EvalFromLength (xreal StartParameter, xreal Length)`
	Returns a CURVEXYZData object with information on the point that is a specified distance from the starting point as specified by input parameter t.

`xreal`	`EvalLength ()`
	Finds the length of the specified edge.

`xreal`	`EvalLengthBetween (xreal Param1, xreal Param2)`
	Finds the length of the specified curve between two given parameters.

`xreal`	`EvalParameter (pfcPoint3D_ptr Point)`
	Finds the corresponding normalized parameter on the curve, given the XYZ point.

`pfcCurveDescriptor_ptr`	`GetCurveDescriptor ()`
	This method returns a data object containing the geometry of the edge or curve.

`pfcFeature_ptr`	`GetFeature ()`
	Returns the feature which contains the geometry.

`xbool`	`GetIsVisible ()`
	true if the geometry is visible and active, false if it is invisible and inactive. Inactive geometry may not have all geometric properties defined.

`pfcBSplineDescriptor_ptr`	`GetNURBSRepresentation ()`
	This method returns the geometry of the edge or curve as a non-uniform rational B-spline curve.

Method Detail

xbool GetIsVisible ()

true if the geometry is visible and active, false if it is invisible and inactive. Inactive geometry may not have all geometric properties defined.

pfcFeature_ptr GetFeature ()

Returns the feature which contains the geometry.

Returns:: The feature.

pfcCurveXYZData_ptr Eval3DData (xreal Param)

Returns a pfcCurveXYZData object with information on the point represented by input parameter t.

If the curve is a composite curve,first derivative pfcCurveXYZData::GetDerivative1(optional pfcVector3D_ptr) and second derivative pfcCurveXYZData::GetDerivative2(optional pfcVector3D_ptr) are not accessible and will benull.

Exceptions thrown (but not limited to):

pfcXToolkitNotImplemented - The argument p_curve represents a composite curve, while deriv1 or deriv2 is not NULL.