BndLib

Bounding box for a surface trimmed or not Adds the segment of the line L limited by the two parameter values P1 and P2, to the bounding box B, and then enlarges B by the tolerance value Tol. Tol is the tolerance value to enlarge the minimum and maximum dimension P1 and P2 may represent infinite values. Exceptions Standard_Failure if P1 and P2 are either two negative infinite real numbers, or two positive infinite real numbers.

P2-P1 can be in [0,2*pi].

Adds the circle C, or the arc of the circle C limited by the two parameter values P1 and P2, to the bounding box B, and then enlarges B by the tolerance value Tol. P2-P1 can be in [0,2*pi].

P2-P1 can be in [0,2*pi].

Adds the ellipse E, or the arc of the ellipse E limited by the two parameter values P1 and P2, to the bounding box B, and then enlarges B by the tolerance value Tol. P2-P1 can be in [0,2*pi].

Adds the arc of the parabola P limited by the two parameter values P1 and P2, to the bounding box B, and then enlarges B by the tolerance value Tol. P1 and P2 may represent infinite values. Exceptions Standard_Failure if P1 and P2 are either two negative infinite real numbers, or two positive infinite real numbers.

Adds the arc of the branch of hyperbola H limited by the two parameter values P1 and P2, to the bounding box B, and then enlarges B by the tolerance value Tol. P1 and P2 may represent infinite values. Exceptions Standard_Failure if P1 and P2 are either two negative infinite real numbers, or two positive infinite real numbers.

Adds to the bounding box B, the patch of the cylinder S limited.

• in the v parametric direction, by the two parameter values VMin and VMax
• and optionally in the u parametric direction, by the two parameter values UMin and UMax. B is then enlarged by the tolerance value Tol. VMin and VMax may represent infinite values. Exceptions Standard_Failure if VMin and VMax are either two negative infinite real numbers, or two positive infinite real numbers.

Adds to the bounding box B, the patch of the cone S limited.

• in the v parametric direction, by the two parameter values VMin and VMax
• and optionally in the u parametric direction, by the two parameter values UMin and UMax, B is then enlarged by the tolerance value Tol. VMin and VMax may represent infinite values. Exceptions Standard_Failure if VMin and VMax are either two negative infinite real numbers, or two positive infinite real numbers.

UMax -UMin can be in [0,2*pi].

UMax-UMin can be in [0,2*pi].

Adds to the bounding box B the sphere S, or.

• the patch of the sphere S, limited in the u parametric direction, by the two parameter values UMin and UMax, and in the v parametric direction, by the two parameter values VMin and VMax. B is then enlarged by the tolerance value Tol. UMax-UMin can be in [0,2*pi] VMin,VMax can be [-pi/2,pi/2]

Adds to the bounding box B.

• the torus S, or
• the patch of the torus S, limited in the u parametric direction, by the two parameter values UMin and UMax, and in the v parametric direction, by the two parameter values VMin and VMax. B is then enlarged by the tolerance value Tol. UMax-UMin can be in [0,2*pi], VMin,VMax can be [-pi/2,pi/2]

Adds to the bounding box B the curve C B is then enlarged by the tolerance value Tol. Note: depending on the type of curve, one of the following representations of the curve C is used to include it in the bounding box B:

• an exact representation if C is built from a line, a circle or a conic curve,
• the poles of the curve if C is built from a Bezier curve or a BSpline curve,
• if not, the points of an approximation of the curve C. Warning C is an adapted curve, that is, an object which is an interface between:
• the services provided by a 2D curve from the package Geom2d
• and those required of the curve by the computation algorithm. The adapted curve is created in the following way: occ::handle<Geom2d_Curve> mycurve = ... ; Geom2dAdaptor_Curve C(mycurve); The bounding box B is then enlarged by adding it: Bnd_Box2d B; // ... double Tol = ... ; Add2dCurve::Add ( C, Tol, B ); Exceptions Standard_Failure if the curve is built from:
• a Geom_Line, or
• a Geom_Parabola, or
• a Geom_Hyperbola, and P1 and P2 are either two negative infinite real numbers, or two positive infinite real numbers.

Adds to the bounding box B the curve C B is then enlarged by the tolerance value Tol. Note: depending on the type of curve, one of the following representations of the curve C is used to include it in the bounding box B:

• an exact representation if C is built from a line, a circle or a conic curve,
• the poles of the curve if C is built from a Bezier curve or a BSpline curve,
• if not, the points of an approximation of the curve C.

Adds to the bounding box Bthe arc of the curve C limited by the two parameter values P1 and P2. B is then enlarged by the tolerance value Tol. Note: depending on the type of curve, one of the following representations of the curve C is used to include it in the bounding box B:

• an exact representation if C is built from a line, a circle or a conic curve,
• the poles of the curve if C is built from a Bezier curve or a BSpline curve,
• if not, the points of an approximation of the curve C. Warning C is an adapted curve, that is, an object which is an interface between:
• the services provided by a 2D curve from the package Geom2d
• and those required of the curve by the computation algorithm. The adapted curve is created in the following way: occ::handle<Geom2d_Curve> mycurve = ... ; Geom2dAdaptor_Curve C(mycurve); The bounding box B is then enlarged by adding it: Bnd_Box2d B; // ... double Tol = ... ; Add2dCurve::Add ( C, Tol, B ); Exceptions Standard_Failure if the curve is built from:
• a Geom_Line, or
• a Geom_Parabola, or
• a Geom_Hyperbola, and P1 and P2 are either two negative infinite real numbers, or two positive infinite real numbers.

Adds to the bounding box B the part of curve C B is then enlarged by the tolerance value Tol. U1, U2 - the parametric range to compute the bounding box; Note: depending on the type of curve, one of the following representations of the curve C is used to include it in the bounding box B:

• an exact representation if C is built from a line, a circle or a conic curve,
• the poles of the curve if C is built from a Bezier curve or a BSpline curve,
• if not, the points of an approximation of the curve C.

Adds to the bounding box B the curve C B is then enlarged by the tolerance value Tol. Note: depending on the type of curve, one of the following representations of the curve C is used to include it in the bounding box B:

• an exact representation if C is built from a line, a circle or a conic curve,
• the poles of the curve if C is built from a Bezier curve or a BSpline curve, if not, the points of an approximation of the curve C. Warning C is an adapted curve, that is, an object which is an interface between:
• the services provided by a 3D curve from the package Geom
• and those required of the curve by the computation algorithm. The adapted curve is created in the following way: occ::handle<Geom_Curve> mycurve = ... ; GeomAdaptor_Curve C(mycurve); The bounding box B is then enlarged by adding it: Bnd_Box B; // ... double Tol = ... ; Add3dCurve::Add ( C, Tol, B ); Exceptions Standard_Failure if the curve is built from:
• a Geom_Line, or
• a Geom_Parabola, or
• a Geom_Hyperbola, and P1 and P2 are either two negative infinite real numbers, or two positive infinite real numbers.

Adds to the bounding box B the curve C the arc of the curve C limited by the two parameter values P1 and P2. Note: depending on the type of curve, one of the following representations of the curve C is used to include it in the bounding box B:

• an exact representation if C is built from a line, a circle or a conic curve,
• the poles of the curve if C is built from a Bezier curve or a BSpline curve, if not, the points of an approximation of the curve C. Warning C is an adapted curve, that is, an object which is an interface between:
• the services provided by a 3D curve from the package Geom
• and those required of the curve by the computation algorithm. The adapted curve is created in the following way: occ::handle<Geom_Curve> mycurve = ... ; GeomAdaptor_Curve C(mycurve); The bounding box B is then enlarged by adding it: Bnd_Box B; // ... double Tol = ... ; Add3dCurve::Add ( C, Tol, B ); Exceptions Standard_Failure if the curve is built from:
• a Geom_Line, or
• a Geom_Parabola, or
• a Geom_Hyperbola, and P1 and P2 are either two negative infinite real numbers, or two positive infinite real numbers.

Adds to the bounding box B the curve C These methods use more precise algorithms for building bnd box then methods Add(...).

Adds to the bounding box B the surface S B is then enlarged by the tolerance value Tol. Note: depending on the type of curve, one of the following representations of the surface S is used to include it in the bounding box B:

• an exact representation if S is built from a plane, a cylinder, a cone, a sphere or a torus,
• the poles of the surface if S is built from a Bezier surface or a BSpline surface,
• the points of an approximation of the surface S in cases other than offset surfaces;
• in the case of an offset surface, the basis surface is first included according to the previous rules; then the bounding box is enlarged by the offset value. Warning Do not use these functions to add a non-finite surface to the bounding box B. If UMin, UMax, VMin or VMax is an infinite value B will become WholeSpace. S is an adapted surface, that is, an object which is an interface between:
• the services provided by a surface from the package Geom
• and those required of the surface by the computation algorithm. The adapted surface is created in the following way: occ::handle<Geom_Surface> mysurface = ... ; GeomAdaptor_Surface S(mysurface); The bounding box B is then enlarged by adding this surface: Bnd_Box B; // ... double Tol = ... ; AddSurface::Add ( S, Tol, B );

Adds to the bounding box B the surface S the patch of the surface S limited in the u parametric direction by the two parameter values UMin, UMax, and in the v parametric direction by the two parameter values VMin, VMax. Note: depending on the type of curve, one of the following representations of the surface S is used to include it in the bounding box B:

• an exact representation if S is built from a plane, a cylinder, a cone, a sphere or a torus,
• the poles of the surface if S is built from a Bezier surface or a BSpline surface,
• the points of an approximation of the surface S in cases other than offset surfaces;
• in the case of an offset surface, the basis surface is first included according to the previous rules; then the bounding box is enlarged by the offset value. Warning Do not use these functions to add a non-finite surface to the bounding box B. If UMin, UMax, VMin or VMax is an infinite value B will become WholeSpace. S is an adapted surface, that is, an object which is an interface between:
• the services provided by a surface from the package Geom
• and those required of the surface by the computation algorithm. The adapted surface is created in the following way: occ::handle<Geom_Surface> mysurface = ... ; GeomAdaptor_Surface S(mysurface); The bounding box B is then enlarged by adding this surface: Bnd_Box B; // ... double Tol = ... ; AddSurface::Add ( S, Tol, B );

Adds the surface S to the bounding box B. This algorithm builds precise bounding box.