SketchSolver_ConstraintDistance.h

// Copyright (C) 2014-2026  CEA, EDF
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
 
#ifndef SketchSolver_ConstraintDistance_H_
#define SketchSolver_ConstraintDistance_H_
 
#include <SketchSolver_Constraint.h>
 
class SketchSolver_ConstraintDistance : public SketchSolver_Constraint
{
public:
  SketchSolver_ConstraintDistance(ConstraintPtr theConstraint) :
      SketchSolver_Constraint(theConstraint),
      myIsSigned(false),
      mySignValue(0.0)
  {}
 
  virtual void update();
 
  virtual bool remove();
 
  virtual void notify(const FeaturePtr& theFeature, PlaneGCSSolver_Update*);
 
protected:
  virtual void getAttributes(EntityWrapperPtr&              theValue,
                             std::vector<EntityWrapperPtr>& theAttributes);
 
  virtual void adjustConstraint();
 
private:
  void addConstraintsToKeepSign();
  void removeConstraintsKeepingSign();
 
private:
  double myPrevValue; 
  bool   myIsSigned;  
  GCSPointPtr myOddPoint; 
  double mySignValue;
};
 
#endif