inc/Prs2d_Angle.lxx


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inline void Prs2d_Angle::CalcTxtPos(const Standard_Boolean theFromAbs) {

  if (!theFromAbs) {
    
    gp_Pnt2d P1 = gp_Pnt2d( myCentX + ( myRad ) * Cos(myFAngle),
                            myCentY + ( myRad ) * Sin(myFAngle) );
  
    gp_Pnt2d P2 = gp_Pnt2d( myCentX + ( myRad ) * Cos(mySAngle),
                            myCentY + ( myRad ) * Sin(mySAngle) );
  

    gp_Pnt2d theCent(myCentX, myCentY);
    gp_Vec2d V1( theCent, P1), V2( theCent, P2), VX(1., 0.), theVecI, theVecJ;
    Standard_Real delta = V1.Angle(V2);
    gp_Vec2d textV1 = V1.Rotated( delta/2 );

    theVecJ = textV1/myRad;
    theVecI = textV1.Rotated(-PI/2.)/myRad;
        
   
    gp_Pnt2d pntText = 
      ((theCent.Translated(textV1)).Translated(theVecI*myTextPosH)).Translated(theVecJ*myTextPosV);
    
    Standard_ShortReal txtAngle = 
    Standard_ShortReal(VX.Angle(theVecI.Rotated(myTextAngle)));
    
    myAbsAngle=txtAngle;
    myAbsX=pntText.X();
    myAbsY=pntText.Y();
  }
  
}