GeomLib

Computes the curve 3d from package Geom corresponding to curve 2d from package Geom2d, on the plan defined with the local coordinate system Position.

Computes the curve 3d from package Geom corresponding to the curve 3d from package Geom, transformed with the transformation <GTrsf> WARNING : this method may return a null Handle if it's impossible to compute the transformation of a curve. It's not implemented when : 1) the curve is an infinite parabola or hyperbola 2) the curve is an offsetcurve.

Make the curve Curve2dPtr have the imposed range First to List the most economic way, that is if it can change the range without changing the nature of the curve it will try to do that. Otherwise it will produce a Bspline curve that has the required range.

Extends the bounded curve Curve to the point Point. The extension is built:

• at the end of the curve if After equals true, or
• at the beginning of the curve if After equals false. The extension is performed according to a degree of continuity equal to Cont, which in its turn must be equal to 1, 2 or 3. This function converts the bounded curve Curve into a BSpline curve. Warning
• Nothing is done, and Curve is not modified if Cont is not equal to 1, 2 or 3.
• It is recommended that the extension should not be too large with respect to the size of the bounded curve Curve: Point must not be located too far from one of the extremities of Curve.

Extends the bounded surface Surf along one of its boundaries. The chord length of the extension is equal to Length. The direction of the extension is given as:

• the u parametric direction of Surf, if InU equals true, or
• the v parametric direction of Surf, if InU equals false. In this parametric direction, the extension is built on the side of:
• the last parameter of Surf, if After equals true, or
• the first parameter of Surf, if After equals false. The extension is performed according to a degree of continuity equal to Cont, which in its turn must be equal to 1, 2 or 3. This function converts the bounded surface Surf into a BSpline surface. Warning
• Nothing is done, and Surf is not modified if Cont is not equal to 1, 2 or 3.
• It is recommended that Length, the size of the extension should not be too large with respect to the size of the bounded surface Surf.
• Surf must not be a periodic BSpline surface in the parametric direction corresponding to the direction of extension.

Compute axes of inertia, of some points <Axe>.Location() is the BaryCentre <Axe>.XDirection is the axe of upper inertia <Axe>.Direction is the Normal to the average plane IsSingular is True if points are on line Tol is used to determine singular cases.

Compute principale axes of inertia, and dispersion value of some points.

Warning! This assume that the InParameter is an increasing sequence of real number and it will not check for that : Unpredictable result can happen if this is not satisfied. It is the caller responsibility to check for that property.
This method makes uniform NumPoints segments S1,...SNumPoints out of the segment defined by the first parameter and the last parameter of the InParameter ; keeps only one point of the InParameters set of parameter in each of the uniform segments taking care of the first and the last parameters. For the ith segment the element of the InParameter is the one that is the first to exceed the midpoint of the segment and to fall before the midpoint of the next segment There will be at the end at most NumPoints + 1 if NumPoints > 2 in the OutParameters Array

this makes sure that there is at least MinNumPoints in OutParameters taking into account the parameters in the InParameters array provided those are in order, that is the sequence of real in the InParameter is strictly non decreasing

This method fuse intervals Interval1 and Interval2 with specified Confusion.

this will compute the maximum distance at the parameters given in the Parameters array by evaluating each parameter the two curves and taking the maximum of the evaluated distance

this will compute the maximum distance at the parameters given in the Parameters array by projecting from the Curve to the reference curve and taking the minimum distance Than the maximum will be taken on those minimas.

Cancel,on the boundaries,the denominator first derivative in the directions wished by the user and set its value to 1.

Estimate surface normal at the given (U, V) point.

This method defines if opposite boundaries of surface coincide with given tolerance.

Returns true if the poles of U1 isoline and the poles of U2 isoline of surface are identical according to tolerance criterion. For rational surfaces Weights(i)*Poles(i) are checked.

Returns true if the poles of V1 isoline and the poles of V2 isoline of surface are identical according to tolerance criterion. For rational surfaces Weights(i)*Poles(i) are checked.

Returns true if the poles of U1 isoline and the poles of U2 isoline of surface are identical according to tolerance criterion.

Returns true if the poles of V1 isoline and the poles of V2 isoline of surface are identical according to tolerance criterion.

Checks whether the 2d curve is a isoline. It can be represented by b-spline, bezier, or geometric line. This line should have natural parameterization.

Builds 3D curve for a isoline. This method takes corresponding isoline from the input surface.

modifies the curve by fixing the first or the last tangencies
if Index3D not in the Range [1,Nb3dSpaces] if the Approx is not Done

modifies the curve by fixing the first or the last tangencies
if Index3D not in the Range [1,Nb3dSpaces] if the Approx is not Done

Computes the max distance for the 3d curve <myCurve> and 2d curve <theCurveOnSurface> If isMultiThread == true then computation will be performed in parallel.

Sets parallel flag.

Returns true if parallel flag is set.

Returns true if the max distance has been found.

Returns error status The possible values are: 0 - OK; 1 - null curve or surface or 2d curve; 2 - invalid parametric range; 3 - error in calculations.

Returns max distance.

Returns parameter in which the distance is maximal.

if the surface is rational this will define the evaluator of a real function of 2 variables a(u,v) such that if we define a new surface by : a(u,v) * N(u,v) NewF(u,v) = --------------- a(u,v) * D(u,v)

Returns the value of a(UParameter,VParameter)=.
H0(UParameter)/Denominator(Umin,Vparameter)
D Denominator(Umin,Vparameter)

• -----------------------------[H1(u)]/(Denominator(Umin,Vparameter)^2) D U
• H3(UParameter)/Denominator(Umax,Vparameter)
  D Denominator(Umax,Vparameter)
• -----------------------------[H2(u)]/(Denominator(Umax,Vparameter)^2) D U

returns if everything went OK

returns the error type if any

returns the interpolated curve of the requested degree

Return if the Surface is a plan.

Return the plan definition.

Returns the value of parameter of the point of range Index : A + ((Index-1)/(NbPoints-1))*B. An exception is raised if Index<=0 or Index>NbPoints.

returns the number of 1D spaces of the Approx

returns the number of 3D spaces of the Approx

returns the number of 3D spaces of the Approx

returns a 2D curve building it from the 1D curve in x at Index1d and y at Index2d amongst the 1D curves if Index1d not in the Range [1,Nb1dSpaces] if Index2d not in the Range [1,Nb1dSpaces] if the Approx is not Done

computes the value <F>of the function for the variable <X>. Returns True if the calculation were successfully done, False otherwise.

computes the derivative <D> of the function for the variable <X>. Returns True if the calculation were successfully done, False otherwise.

computes the value <F> and the derivative <D> of the function for the variable <X>. Returns True if the calculation were successfully done, False otherwise.

Extracts the parameter of a 3D point lying on a surface or at a distance less than the MaxDist value.