NURBS Surface (the base surface entity)

Types

	A3DSurfNurbsData
	`A3DEBSplineSurfaceForm`

Fields

	`kA3DBSplineSurfaceFormPlane`
	`kA3DBSplineSurfaceFormCylindrical`
	`kA3DBSplineSurfaceFormConical`
	`kA3DBSplineSurfaceFormSpherical`
	`kA3DBSplineSurfaceFormRevolution`
	`kA3DBSplineSurfaceFormRuled`
	`kA3DBSplineSurfaceFormGeneralizedCone`
	`kA3DBSplineSurfaceFormQuadric`
	`kA3DBSplineSurfaceFormLinearExtrusion`
	`kA3DBSplineSurfaceFormUnspecified`
	`kA3DBSplineSurfaceFormPolynomial`

Functions

`A3DStatus`	`A3DSurfNurbsGet`
`A3DStatus`	`A3DSurfNurbsCreate`
`A3DStatus`	`A3DSurfBaseGetAsNurbs`
`A3DStatus`	`A3DSurfBaseWithDomainGetAsNurbs`

Detailed Description

group a3d_srfnurbs: Entity type is kA3DTypeSurfNurbs.

Note

This surface type contains neither A3DUVParameterizationData nor A3DMiscCartesianTransformationData.

Type Documentation

enum A3DEBSplineSurfaceForm

Enumeration for characterizing a surface’s form.

Version: 2.0

Values:

enumerator kA3DBSplineSurfaceFormPlane: Planar surface.

enumerator kA3DBSplineSurfaceFormCylindrical: Cylindrical surface.

enumerator kA3DBSplineSurfaceFormConical: Conical surface.

enumerator kA3DBSplineSurfaceFormSpherical: Spherical surface.

enumerator kA3DBSplineSurfaceFormRevolution: Surface of revolution.

enumerator kA3DBSplineSurfaceFormRuled: Ruled surface.

enumerator kA3DBSplineSurfaceFormGeneralizedCone: Cone.

enumerator kA3DBSplineSurfaceFormQuadric: Quadric surface.

enumerator kA3DBSplineSurfaceFormLinearExtrusion: Surface of extrusion.

enumerator kA3DBSplineSurfaceFormUnspecified: Unspecified.

enumerator kA3DBSplineSurfaceFormPolynomial: Polynomial surface.

Function Documentation

A3DStatus A3DSurfNurbsGet(const A3DSurfNurbs *pSrf, A3DSurfNurbsData *pData)

Populates the A3DSurfNurbsData structure.

Version: 2.0

Return values:

A3D_INITIALIZE_NOT_CALLED –
A3D_INVALID_DATA_STRUCT_SIZE –
A3D_INVALID_DATA_STRUCT_NULL –
A3D_INVALID_ENTITY_NULL –
A3D_INVALID_ENTITY_TYPE –
A3D_SUCCESS –

Returns:

A3D_SUCCESS in case of success or an error code

A3DStatus A3DSurfNurbsCreate(const A3DSurfNurbsData *pData, A3DSurfNurbs **ppSrf)

Creates an A3DSurfNurbs from an A3DSurfNurbsData structure.

Version: 2.0

Return values:

A3D_INVALID_DATA_STRUCT_SIZE –
A3D_INVALID_DATA_STRUCT_NULL –
A3D_INTERVAL_INCONSISTENT_DATA –
A3D_SUCCESS –

Returns:

A3D_SUCCESS in case of success or an error code

A3DStatus A3DSurfBaseGetAsNurbs(const A3DSurfBase *pSrf, A3DDouble dTolerance, A3DBool bUseSameParameterization, A3DSurfNurbsData *pData)

Populates the A3DSurfNurbsData structure from any type of A3DSurfBase.

Deprecated:: This structure will be deprecated with HE 2023. Please use A3DSurfBaseWithDomainGetAsNurbs instead.

Version: 2.0

This structure must be freed with A3DSurfNurbsGet call.

Warning

This function can modify the parameterization for surface. You must treat related entities accordingly.

Warning

See note on Tolerance explanation at A3DCrvBaseGetAsNurbs definition.

Warning

This function can be called with any type of curve.

Return values:

A3D_INVALID_DATA_STRUCT_SIZE –
A3D_INVALID_DATA_STRUCT_NULL –
A3D_INTERVAL_INCONSISTENT_DATA –
A3D_SRF_NURBS_TOO_TINY_TOLERANCE –
A3D_SUCCESS –

Returns:

A3D_SUCCESS in case of success or an error code

A3DStatus A3DSurfBaseWithDomainGetAsNurbs(const A3DSurfBase *pSrf, const A3DDomainData *pOptDomain, A3DDouble dTolerance, A3DBool bUseSameParameterization, A3DSurfNurbsData *pData)

Populates the A3DSurfNurbsData structure from any type of A3DSurfBase and an optional restriction domain A3DDomainData.

This structure must be freed with A3DSurfNurbsGet call.

Version: 14.2

Warning

This function can modify the parameterization for surface. You must treat related entities accordingly.

Warning

If pOptDomain is defined it must be contained by surface domaine.

Warning

See note on Tolerance explanation at A3DCrvBaseGetAsNurbs definition.

Warning

This function can be called with any type of curve.

Return values:

A3D_INVALID_DATA_STRUCT_SIZE –
A3D_INVALID_DATA_STRUCT_NULL –
A3D_INTERVAL_INCONSISTENT_DATA –
A3D_SRF_NURBS_TOO_TINY_TOLERANCE –
A3D_SRF_INVALID_PARAMETERS –
A3D_SUCCESS –

Returns:

A3D_SUCCESS in case of success or an error code