This tool provides a method for computing pcurve by projecting 3d curve onto a surface. Projection is done by 23 or more points (this number is changed for B-Splines according to the following rule: the total number of the points is not less than number of spans * (degree + 1); it is increased recursively starting with 23 and is added with 22 until the condition is fulfilled). Isoparametric cases (if curve corresponds to U=const or V=const on the surface) are recognized with the given precision.
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| | ShapeConstruct_ProjectCurveOnSurface () |
| | Empty constructor.
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| virtual void | Init (const Handle< Geom_Surface > &surf, const Standard_Real preci) |
| | Initializes the object with all necessary parameters, i.e. surface and precision.
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| virtual void | Init (const Handle< ShapeAnalysis_Surface > &surf, const Standard_Real preci) |
| | Initializes the object with all necessary parameters, i.e. surface and precision.
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| void | SetSurface (const Handle< Geom_Surface > &surf) |
| | Loads a surface (in the form of Geom_Surface) to project on.
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| void | SetSurface (const Handle< ShapeAnalysis_Surface > &surf) |
| | Loads a surface (in the form of ShapeAnalysis_Surface) to project on.
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| void | SetPrecision (const Standard_Real preci) |
| | Sets value for current precision.
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| Standard_Boolean & | BuildCurveMode () |
| | Returns (modifiable) the build-curve-3d mode, by default False If True, if the projected curve has been recomputed by interpolation, the 3d curve is also rebuild by interpolation.
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| Standard_Integer & | AdjustOverDegenMode () |
| | Returns (modifiable) the flag specifying to which side of parametrical space adjust part of pcurve which lies on seam. This is required in very rare case when 3d curve which is to be projected goes partly along the seam on the closed surface with singularity (e.g. sphere), goes through the degenerated point and paerly lies on internal area of surface.
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| Standard_Boolean | Status (const ShapeExtend_Status theStatus) const |
| | Returns the status of last Perform.
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| virtual Standard_Boolean | Perform (Handle< Geom_Curve > &c3d, const Standard_Real First, const Standard_Real Last, Handle< Geom2d_Curve > &c2d, const Standard_Real TolFirst=-1, const Standard_Real TolLast=-1) |
| | Computes the projection of 3d curve onto a surface using the specialized algorithm. Returns False if projector fails, otherwise, if pcurve computed successfully, returns True. The output curve 2D is guaranteed to be same-parameter with input curve 3D on the interval [First, Last]. If the output curve lies on a direct line the infinite line is returned, in the case same-parameter condition is satisfied. TolFirst and TolLast are the tolerances at the ends of input curve 3D.
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| Standard_Boolean | PerformByProjLib (Handle< Geom_Curve > &c3d, const Standard_Real First, const Standard_Real Last, Handle< Geom2d_Curve > &c2d, const GeomAbs_Shape continuity=GeomAbs_C1, const Standard_Integer maxdeg=12, const Standard_Integer nbinterval=-1) |
| | Computes the projection of 3d curve onto a surface using the standard algorithm from ProjLib. Returns False if standard projector fails or raises an exception or cuts the curve by parametrical bounds of the surface. Else, if pcurve computed successfully, returns True. The continuity, maxdeg and nbinterval are parameters of call to Approx_CurveOnSurface. If nbinterval is equal to -1 (default), this value is computed depending on source 3d curve and surface.
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 Public Member Functions inherited from Standard_Transient |
| | Standard_Transient () |
| | Empty constructor.
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| | Standard_Transient (const Standard_Transient &) |
| | Copy constructor – does nothing.
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| Standard_Transient & | operator= (const Standard_Transient &) |
| | Assignment operator, needed to avoid copying reference counter.
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| virtual | ~Standard_Transient () |
| | Destructor must be virtual.
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| virtual const opencascade::handle< Standard_Type > & | DynamicType () const |
| | Returns a type descriptor about this object.
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| Standard_Boolean | IsInstance (const opencascade::handle< Standard_Type > &theType) const |
| | Returns a true value if this is an instance of Type.
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| Standard_Boolean | IsInstance (const Standard_CString theTypeName) const |
| | Returns a true value if this is an instance of TypeName.
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| Standard_Boolean | IsKind (const opencascade::handle< Standard_Type > &theType) const |
| | Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism.
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| Standard_Boolean | IsKind (const Standard_CString theTypeName) const |
| | Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism.
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| Standard_Transient * | This () const |
| | Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero.
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| Standard_Integer | GetRefCount () const noexcept |
| | Get the reference counter of this object.
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| void | IncrementRefCounter () noexcept |
| | Increments the reference counter of this object.
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| Standard_Integer | DecrementRefCounter () noexcept |
| | Decrements the reference counter of this object; returns the decremented value.
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| virtual void | Delete () const |
| | Memory deallocator for transient classes.
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This tool provides a method for computing pcurve by projecting 3d curve onto a surface. Projection is done by 23 or more points (this number is changed for B-Splines according to the following rule: the total number of the points is not less than number of spans * (degree + 1); it is increased recursively starting with 23 and is added with 22 until the condition is fulfilled). Isoparametric cases (if curve corresponds to U=const or V=const on the surface) are recognized with the given precision.
