GeomFill

Builds a ruled surface between the two curves, Curve1 and Curve2.

Used by the generical classes to determine Tolerance for approximation.

Define the type of parametrization used in the approximation.

Define the Continuity used in the approximation.

define the Weights associed to the criterium used in the optimization.
if Wi <= 0

returns the type of parametrization used in the approximation

returns the Continuity used in the approximation

returns the Weights (as percent) associed to the criterium used in the optimization.

Define the type of parametrization used in the approximation.

Define the Continuity used in the approximation.

define the Weights associed to the criterium used in the optimization.
if Wi <= 0

returns the type of parametrization used in the approximation

returns the Continuity used in the approximation

returns the Weights (as percent) associed to the criterium used in the optimization.

Returns the Bezier surface resulting from the computation performed by this algorithm.

Constructs a boundary object defined by the 3d curve CurveOnSurf. The surface to be filled along this boundary will be in the tolerance range defined by Tol3d. What's more, at each point of CurveOnSurf, the angle between the normal to the surface to be filled along this boundary, and the normal to the surface on which CurveOnSurf lies, must not be greater than TolAng. This object is to be used as a boundary for a GeomFill_ConstrainedFilling framework. Warning CurveOnSurf is an adapted curve, that is, an object which is an interface between:

• the services provided by a curve lying on a surface from the package Geom
• and those required of the curve by the computation algorithm which uses it.
  The adapted curve is created in the following way: occ::handle<Geom_Surface> mySurface = ... ; occ::handle<Geom2d_Curve> myParamCurve = ... ; // where myParamCurve is a 2D curve in the parametric space of the surface mySurface occ::handle<GeomAdaptor_Surface> Surface = new GeomAdaptor_Surface(mySurface); occ::handle<Geom2dAdaptor_Curve> ParamCurve = new Geom2dAdaptor_Curve(myParamCurve); CurveOnSurf = Adaptor3d_CurveOnSurface(ParamCurve,Surface); The boundary is then constructed with the CurveOnSurf object: double Tol = ... ; double TolAng = ... ; myBoundary = GeomFill_BoundWithSurf ( CurveOnSurf, Tol, TolAng );

Returns the BSpline surface Surface resulting from the computation performed by this algorithm.

Create a Blend with a constant radius with 2 guide-line. <FShape> sets the type of fillet surface. The default value is Convert_TgtThetaOver2 (classical nurbs representation of circles). ChFi3d_QuasiAngular corresponds to a nurbs representation of circles which parameterisation matches the circle one. ChFi3d_Polynomial corresponds to a polynomial representation of circles.

compute the section for v = param

compute the first derivative in v direction of the section for v = param

compute the second derivative in v direction of the section for v = param

get the number of 2d curves to approximate.

get the format of an section

get the Knots of the section

get the Multplicities of the section

Returns if the section is rational or not.

Returns the number of intervals for continuity . May be one if Continuity(me) >= .

Stores in <T> the parameters bounding the intervals of continuity .
The array must provide enough room to accommodate for the parameters. i.e. T.Length() > NbIntervals()

Sets the bounds of the parametric interval on the fonction This determines the derivatives in these values if the function is not Cn.

Returns the tolerance to reach in approximation to respect BoundTol error at the Boundary AngleTol tangent error at the Boundary (in radian) SurfTol error inside the surface.

Is useful, if (me) has to be run numerical algorithm to perform D0, D1 or D2.

Get the barycentre of Surface. A very poor estimation is sufficient. This information is useful to perform well conditioned rational approximation.

Returns the length of the maximum section. This information is useful to perform well conditioned rational approximation.

Compute the minimal value of weight for each poles of all sections. This information is useful to perform well conditioned rational approximation.

initialize curve of trihedron law

Computes Triedrhon on curve at parameter .

Computes Triedrhon and derivative Trihedron on curve at parameter Warning: It used only for C1 or C2 approximation.

compute Trihedron on curve first and second derivatives. Warning: It used only for C2 approximation

Returns the number of intervals for continuity . May be one if Continuity(me) >= .

Stores in <T> the parameters bounding the intervals of continuity .
The array must provide enough room to accommodate for the parameters. i.e. T.Length() > NbIntervals()

Gets average value of Tangent(t) and Normal(t) it is useful to make fast approximation of rational surfaces.

Says if the law is Constant.

Return True.

Constructs an empty framework for filling a surface from boundaries. The boundaries of the surface will be defined, and the surface will be built by using the function Init. The surface will respect the following constraints:

• its degree will not be greater than MaxDeg
• the maximum number of segments MaxSeg which BSpline surfaces can have.

Allows to modify domain on which the blending function associated to the constrained boundary B will propag the influence of the field of tangency. Can be useful to reduce influence of boundaries on which the Coons compatibility conditions are not respected. l is a relative value of the parametric range of B. Default value for l is 1 (used in Init). Warning: Must be called after Init with a constrained boundary used in the call to Init.

Computes the new poles of the surface using the new blending functions set by several calls to SetDomain.

Returns the bound of index i after sort.

Returns the BSpline surface after computation of the fill by this framework.

Internal use for Advmath approximation call.

Computes the fields of tangents on 30 points along the bound I, these are not the constraint tangents but gives an idea of the coonsAlgPatch regularity.

Computes the fields of tangents and normals on 30 points along the bound I, draw them, and computes the max dot product that must be near than 0.

Computes values and normals along the bound I and compare them to the approx result curves (bound and tgte field) , draw the normals and tangents.

Computes values and normals along the bound I on both constraint surface and result surface, draw the normals, and computes the max distance between values and the max angle between normals.

Constructs the algorithmic patch. By Default the constructed blending functions are linear. Warning: No control is done on the bounds. B1/B3 and B2/B4 must be same range and well oriented.

Set the blending functions.

Computes the value on the algorithmic patch at parameters U and V.

Computes the d/dU partial derivative on the algorithmic patch at parameters U and V.

Computes the d/dV partial derivative on the algorithmic patch at parameters U and V.

Computes the d2/dUdV partial derivative on the algorithmic patch made with linear blending functions at parameter U and V.

initialize curve of frenet law

Sets the bounds of the parametric interval on the function This determines the derivatives in these values if the function is not Cn.

compute Triedrhon on curve at parameter

compute Triedrhon and derivative Trihedron on curve at parameter Warning : It used only for C1 or C2 approximation

compute Trihedron on curve first and second derivatives. Warning : It used only for C2 approximation

Returns the number of intervals for continuity . May be one if Continuity(me) >= .

Stores in <T> the parameters bounding the intervals of continuity .
The array must provide enough room to accommodate for the parameters. i.e. T.Length() > NbIntervals()

Tries to define the best trihedron mode for the curve. It can be:

• Frenet
• CorrectedFrenet
• DiscreteTrihedron Warning: the CorrectedFrenet must be constructed with option ForEvaluation = True, the curve must be set by method SetCurve.

Get average value of Tangent(t) and Normal(t) it is useful to make fast approximation of rational surfaces.

Say if the law is Constant.

Return True.

initialize curve of trihedron law

Set a transformation Matrix like the law M(t) become Mat * M(t).

compute location 2d points and associated first derivatives. Warning : It used only for C1 or C2 approximation

compute location 2d points and associated first and second derivatives. Warning : It used only for C2 approximation

Returns the number of intervals for continuity . May be one if Continuity(me) >= .

Stores in <T> the parameters bounding the intervals of continuity .
The array must provide enough room to accommodate for the parameters. i.e. T.Length() > NbIntervals()

Sets the bounds of the parametric interval on the function This determines the derivatives in these values if the function is not Cn.

Gets the bounds of the parametric interval on the function.

Gets the bounds of the function parametric domain. Warning: This domain it is not modified by the SetValue method.

Get the maximum Norm of the matrix-location part. It is usful to find a good Tolerance to approx M(t).

Get average value of M(t) and V(t) it is useful to make fast approximation of rational surfaces.