// Copyright (c) 1999-2012 OPEN CASCADE SAS
//
// The content of this file is subject to the Open CASCADE Technology Public
// License Version 6.5 (the "License"). You may not use the content of this file
// except in compliance with the License. Please obtain a copy of the License
// at http://www.opencascade.org and read it completely before using this file.
//
// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
//
// The Original Code and all software distributed under the License is
// distributed on an "AS IS" basis, without warranty of any kind, and the
// Initial Developer hereby disclaims all such warranties, including without
// limitation, any warranties of merchantability, fitness for a particular
// purpose or non-infringement. Please see the License for the specific terms
// and conditions governing the rights and limitations under the License.

inline void Prs2d_Diameter::CalcTxtPos(const Standard_Boolean theFromAbs) {

 if (!theFromAbs) { 
  
  gp_Pnt2d thePnt1(myAppX1,myAppY1), thePnt2(myAppX2,myAppY2);

  if (myInside) 
  {
    thePnt1.SetCoord(myX1,myY1);
    thePnt2.SetCoord(myX2,myY2);
  }
    
  gp_Vec2d VX( 1., 0. ), theVecI,theVecJ,theVec(thePnt2,thePnt1);
  Standard_Real theDist=thePnt1.Distance(thePnt2);
  
  theVec.Normalized();
  
  theVecI = theVec.Reversed()*myTextPosH/theDist;
  theVecJ = theVec.Reversed().Rotated(M_PI/2)*myTextPosV/theDist;
  
  theVec.Rotate(-myTextAngle);
  
  thePnt2.Translate(theVecI);
  thePnt2.Translate(theVecJ);
  thePnt1.Translate(theVecI);
  thePnt1.Translate(theVecJ);
  
  Standard_Real theTxtAngle = VX.Angle( theVec );
  gp_Pnt2d pntText;
  
  
  if ( theTxtAngle >= 0 && theTxtAngle <= M_PI/2 )
        pntText = thePnt2.Translated(theVec/theDist);
  else if ( theTxtAngle > M_PI/2 && theTxtAngle <= M_PI ) {
        pntText = thePnt1.Translated(theVec.Reversed()/theDist) ;
	theTxtAngle = VX.Angle( theVec.Reversed() );
  } else if ( theTxtAngle >= -M_PI/2 && theTxtAngle < 0 )  
        pntText = thePnt2.Translated(theVec/theDist);
  else if ( theTxtAngle >= -M_PI && theTxtAngle < -M_PI/2 ) {
        pntText = thePnt1.Translated(theVec.Reversed()/theDist);
        theTxtAngle = VX.Angle( theVec.Reversed() );
  }
  
  myAbsAngle=theTxtAngle;
  myAbsX=pntText.X();
  myAbsY=pntText.Y();
  

 } 
}