// 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 "Standard.hxx" #include "Standard_DefineAlloc.hxx" #include "Standard_Handle.hxx" #include "GeomAbs_Shape.hxx" #include "LocalAnalysis_StatusErrorType.hxx" class Geom_Surface; class Geom2d_Curve; #include "GeomLProp_SLProps.hxx" //! 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 occ::handle& Surf1, const double u1, const double v1, const occ::handle& Surf2, const double u2, const double v2, const GeomAbs_Shape Order, const double EpsNul = 0.001, const double EpsC0 = 0.001, const double EpsC1 = 0.001, const double EpsC2 = 0.001, const double EpsG1 = 0.001, const double Percent = 0.01, const double Maxlen = 10000); Standard_EXPORT LocalAnalysis_SurfaceContinuity(const occ::handle& curv1, const occ::handle& curv2, const double U, const occ::handle& Surf1, const occ::handle& Surf2, const GeomAbs_Shape Order, const double EpsNul = 0.001, const double EpsC0 = 0.001, const double EpsC1 = 0.001, const double EpsC2 = 0.001, const double EpsG1 = 0.001, const double Percent = 0.01, const double Maxlen = 10000); //! This constructor is used when we want to compute many analysis. //! After we use the method ComputeAnalysis Standard_EXPORT LocalAnalysis_SurfaceContinuity(const double EpsNul = 0.001, const double EpsC0 = 0.001, const double EpsC1 = 0.001, const double EpsC2 = 0.001, const double EpsG1 = 0.001, const double Percent = 0.01, const double Maxlen = 10000); Standard_EXPORT void ComputeAnalysis(GeomLProp_SLProps& Surf1, GeomLProp_SLProps& Surf2, const GeomAbs_Shape Order); Standard_EXPORT bool IsDone() const; Standard_EXPORT GeomAbs_Shape ContinuityStatus() const; Standard_EXPORT LocalAnalysis_StatusErrorType StatusError() const; Standard_EXPORT double C0Value() const; Standard_EXPORT double C1UAngle() const; Standard_EXPORT double C1URatio() const; Standard_EXPORT double C1VAngle() const; Standard_EXPORT double C1VRatio() const; Standard_EXPORT double C2UAngle() const; Standard_EXPORT double C2URatio() const; Standard_EXPORT double C2VAngle() const; Standard_EXPORT double C2VRatio() const; Standard_EXPORT double G1Angle() const; Standard_EXPORT double G2CurvatureGap() const; Standard_EXPORT bool IsC0() const; Standard_EXPORT bool IsC1() const; Standard_EXPORT bool IsC2() const; Standard_EXPORT bool IsG1() const; Standard_EXPORT bool IsG2() const; 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); double myContC0; double myContC1U; double myContC1V; double myContC2U; double myContC2V; double myContG1; double myLambda1U; double myLambda2U; double myLambda1V; double myLambda2V; double myETA1; double myETA2; double myETA; double myZETA1; double myZETA2; double myZETA; double myAlpha; GeomAbs_Shape myTypeCont; double myepsC0; double myepsnul; double myepsC1; double myepsC2; double myepsG1; double myperce; double mymaxlen; double myGap; bool myIsDone; LocalAnalysis_StatusErrorType myErrorStatus; }; #endif // _LocalAnalysis_SurfaceContinuity_HeaderFile