// Created on: 1996-08-09 // Created by: Herve LOUESSARD // Copyright (c) 1996-1999 Matra Datavision // Copyright (c) 1999-2014 OPEN CASCADE SAS // // This file is part of Open CASCADE Technology software library. // // This library is free software; you can redistribute it and/or modify it under // the terms of the GNU Lesser General Public License version 2.1 as published // by the Free Software Foundation, with special exception defined in the file // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT // distribution for complete text of the license and disclaimer of any warranty. // // Alternatively, this file may be used under the terms of Open CASCADE // commercial license or contractual agreement. #ifndef _LocalAnalysis_SurfaceContinuity_HeaderFile #define _LocalAnalysis_SurfaceContinuity_HeaderFile #include #include #include #include #include #include #include class StdFail_NotDone; class Geom_Surface; class Geom2d_Curve; class GeomLProp_SLProps; //! This class gives tools to check local continuity C0 //! C1 C2 G1 G2 between two points situated on two surfaces class LocalAnalysis_SurfaceContinuity { public: DEFINE_STANDARD_ALLOC //! -u1,v1 are the parameters of the point on Surf1 //! -u2,v2 are the parameters of the point on Surf2 //! -Order is the required continuity: //! GeomAbs_C0 GeomAbs_C1 GeomAbs_C2 //! GeomAbs_G1 GeomAbs_G2 //! //! -EpsNul is used to detect a a vector with nul //! magnitude //! //! -EpsC0 is used for C0 continuity to confuse two //! points (in mm) //! //! -EpsC1 is an angular tolerance in radians used //! for C1 continuity to compare the angle between //! the first derivatives //! //! -EpsC2 is an angular tolerance in radians used //! for C2 continuity to compare the angle between //! the second derivatives //! //! -EpsG1 is an angular tolerance in radians used //! for G1 continuity to compare the angle between //! the normals //! //! -Percent : percentage of curvature variation (unitless) //! used for G2 continuity //! //! - Maxlen is the maximum length of Surf1 or Surf2 in //! meters used to detect null curvature (in mm) //! //! the constructor computes the quantities which are //! necessary to check the continuity in the following cases: //! //! case C0 //! -------- //! - the distance between P1 and P2 with P1=Surf (u1,v1) and //! P2=Surfv2(u2,v2) //! //! case C1 //! ------- //! //! - the angle between the first derivatives in u : //! //! dSurf1(u1,v1) dSurf2(u2,v2) //! ----------- and --------- //! du du //! //! the angle value is between 0 and PI/2 //! //! - the angle between the first derivatives in v : //! //! dSurf1(u1,v1) dSurf2(u2,v2) //! -------- and --------- //! dv dv //! //! - the ratio between the magnitudes of the first derivatives in u //! - the ratio between the magnitudes of the first derivatives in v //! //! the angle value is between 0 and pi/2 //! //! case C2 //! ------- //! - the angle between the second derivatives in u //! 2 2 //! d Surf1(u1,v1) d Surf2(u2,v2) //! ---------- ---------- //! 2 2 //! d u d u //! //! - the ratio between the magnitudes of the second derivatives in u //! - the ratio between the magnitudes of the second derivatives in v //! //! the angle value is between 0 and PI/2 //! //! case G1 //! ------- //! -the angle between the normals at each point //! the angle value is between 0 and PI/2 //! //! case G2 //! ------- //! - the maximum normal curvature gap between the two //! points Standard_EXPORT LocalAnalysis_SurfaceContinuity(const Handle(Geom_Surface)& Surf1, const Standard_Real u1, const Standard_Real v1, const Handle(Geom_Surface)& Surf2, const Standard_Real u2, const Standard_Real v2, const GeomAbs_Shape Order, const Standard_Real EpsNul = 0.001, const Standard_Real EpsC0 = 0.001, const Standard_Real EpsC1 = 0.001, const Standard_Real EpsC2 = 0.001, const Standard_Real EpsG1 = 0.001, const Standard_Real Percent = 0.01, const Standard_Real Maxlen = 10000); Standard_EXPORT LocalAnalysis_SurfaceContinuity(const Handle(Geom2d_Curve)& curv1, const Handle(Geom2d_Curve)& curv2, const Standard_Real U, const Handle(Geom_Surface)& Surf1, const Handle(Geom_Surface)& Surf2, const GeomAbs_Shape Order, const Standard_Real EpsNul = 0.001, const Standard_Real EpsC0 = 0.001, const Standard_Real EpsC1 = 0.001, const Standard_Real EpsC2 = 0.001, const Standard_Real EpsG1 = 0.001, const Standard_Real Percent = 0.01, const Standard_Real Maxlen = 10000); //! This constructor is used when we want to compute many analysis. //! After we use the method ComputeAnalysis Standard_EXPORT LocalAnalysis_SurfaceContinuity(const Standard_Real EpsNul = 0.001, const Standard_Real EpsC0 = 0.001, const Standard_Real EpsC1 = 0.001, const Standard_Real EpsC2 = 0.001, const Standard_Real EpsG1 = 0.001, const Standard_Real Percent = 0.01, const Standard_Real Maxlen = 10000); Standard_EXPORT void ComputeAnalysis (GeomLProp_SLProps& Surf1, GeomLProp_SLProps& Surf2, const GeomAbs_Shape Order); Standard_EXPORT Standard_Boolean IsDone() const; Standard_EXPORT GeomAbs_Shape ContinuityStatus() const; Standard_EXPORT LocalAnalysis_StatusErrorType StatusError() const; Standard_EXPORT Standard_Real C0Value() const; Standard_EXPORT Standard_Real C1UAngle() const; Standard_EXPORT Standard_Real C1URatio() const; Standard_EXPORT Standard_Real C1VAngle() const; Standard_EXPORT Standard_Real C1VRatio() const; Standard_EXPORT Standard_Real C2UAngle() const; Standard_EXPORT Standard_Real C2URatio() const; Standard_EXPORT Standard_Real C2VAngle() const; Standard_EXPORT Standard_Real C2VRatio() const; Standard_EXPORT Standard_Real G1Angle() const; Standard_EXPORT Standard_Real G2CurvatureGap() const; Standard_EXPORT Standard_Boolean IsC0() const; Standard_EXPORT Standard_Boolean IsC1() const; Standard_EXPORT Standard_Boolean IsC2() const; Standard_EXPORT Standard_Boolean IsG1() const; Standard_EXPORT Standard_Boolean IsG2() const; protected: private: Standard_EXPORT void SurfC0 (const GeomLProp_SLProps& Surf1, const GeomLProp_SLProps& Surf2); Standard_EXPORT void SurfC1 (GeomLProp_SLProps& Surf1, GeomLProp_SLProps& Surf2); Standard_EXPORT void SurfC2 (GeomLProp_SLProps& Surf1, GeomLProp_SLProps& Surf2); Standard_EXPORT void SurfG1 (GeomLProp_SLProps& Surf1, GeomLProp_SLProps& Surf2); Standard_EXPORT void SurfG2 (GeomLProp_SLProps& Surf1, GeomLProp_SLProps& Surf2); Standard_Real myContC0; Standard_Real myContC1U; Standard_Real myContC1V; Standard_Real myContC2U; Standard_Real myContC2V; Standard_Real myContG1; Standard_Real myLambda1U; Standard_Real myLambda2U; Standard_Real myLambda1V; Standard_Real myLambda2V; Standard_Real myETA1; Standard_Real myETA2; Standard_Real myETA; Standard_Real myZETA1; Standard_Real myZETA2; Standard_Real myZETA; Standard_Real myAlpha; GeomAbs_Shape myTypeCont; Standard_Real myepsC0; Standard_Real myepsnul; Standard_Real myepsC1; Standard_Real myepsC2; Standard_Real myepsG1; Standard_Real myperce; Standard_Real mymaxlen; Standard_Real myGap; Standard_Boolean myIsDone; LocalAnalysis_StatusErrorType myErrorStatus; }; #endif // _LocalAnalysis_SurfaceContinuity_HeaderFile