DG Kernel (ActiveX) Documentation


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IAxiBase Interface

GetCrossPosition
SetCrossPosition
GetCount
GetKnotValue
SetKnotValue

IAxiBase interface allows modification of array of Base Knots and the current Cross-section position (current z-axis position) in the object. Changing of a knot position will make the object stretched or contracted. 

Note that IAxiBase does not allow deleting or inserting knots into the Axial Base. To insert a new knot into the Base obtain IArray interface from IAxiBase and call its InsertAt method.

(See also StripTopol programming sample).

Obtaining IArray managing Axial Base knots via ISection->IAxiBase->IArray is a context-dependent query. It means that between two steps ISection->IAxiBase and IAxiBase->IArray there must not be any other queries from the ISection interface.

See also Patch Tutorial, MiniCAD Sample, Interface List.


HRESULT GetCrossPosition(double *pz)

Parameters

pz - [out] pointer to a double variable to hold the output.
Return Values
S_OK in case of success
DISP_E_PARAMNOTOPTIONAL - if pz is NULL.

Remarks

Returns current cross position of the object.

 

HRESULT SetCrossPosition(double z)

Parameters

z - [in] new cross position.

Return Values

S_OK  - in case of success.
 
DISP_E_PARAMNOTOPTIONAL - if z value is outside of the current z-range of the model.
 
Remarks
 
Use this function to set current cross position, so that following parameters modifications will be made in cross plane at z position.

HRESULT GetCount(int *pnCount)

Parameters

pnCount - [out] pointer to the variable which will receive number of axial knots in the object.

Return Values

S_OK in case of success.

Remarks

Call to determine number of knots in the base.


HRESULT GetKnotValue(int knot, double *pz)

Parameters

knot - [in] index of the knot to retrieve.

pz - [out] pointer to the double variable, which will hold the returned knot position.

Return Values

S_OK in case of success

TYPE_E_ELEMENTNOTFOUND - in case knot is out of the valid range.

DISP_E_PARAMNOTOPTIONAL - pz is NULL.

Remarks
Call this method to obtain position of a particular knot in the base.
 

HRESULT SetKnotValue(int knot, double z)

Parameters

knot - [in] index of the knot to set.

z - [in] new position of the knot

Return Values

S_OK in case of success

TYPE_E_ELEMENTNOTFOUND - in case knot is out range.

DI_E_INVALIDGEOMETRY - when new position is out of the valid range. See remarks.
Remarks
 
Call this method to set position of a particular knot in the base. To be valid, z must be such that resulting array is increasing and none of the knot values coincide with each other. Between two calls for this method, which implemented by the same object (it was obtained from the same ISection interface), there should be a call for UpdateSurface method of DG Kernel control or call for Update method of IModel interface.