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$$$$ COUR     NOTICE  CHAT      11/09/12    21:15:39     7124           
                                             DATE     11/09/12

    Operateur COURBE                         Voir aussi : CUBP
    ----------------                                      CUBT   

    LIG1 = COURBE (N1) ('DINI' DENS1)  ('DFIN' DENS2) ...
                  ...  ('PINI' OBJET1) ('PFIN' OBJET2) ...
                  ...  POIN0 POIN1 (POIN2 (POIN3 ...) ) ...
                  ...  ('PARAMETRE' FLOT1 FLOT2) ('REGULIER') ;


    Description :
    _____________

    The COURBE operator creates a polynomial curve whose P points
 verify the following equation :

                            2          3
    P = POIN0 + U. POIN1 + U .POIN2 + U .POIN3 + ...

 in which U is a real parameter.


    Contents :
    __________

    N1           : number (ENTIER type)
   'DINI'        : key word (MOT type) followed by :
    DENS1        : density value (FLOTTANT type)

   'DFIN'        : key word (MOT type) followed by :
    DENS2        : density value (FLOTTANT type)

    For further details, refer to the DROITE, CERCLE ... operators


'PINI'        :key word (MOT type) followed by :
 OBJET1       :if OBJET1 is a POINT type object (its coordinates 
               can be obtained for the value U1 of the parameter U), 
               the curve original point is OBJET1
               if OBJET1 is a MAILLAGE type object (inevitably a line) 
               the final point of OBJET1 will be the curve original
               point (its coordinates can be obtained for the value U1
               of the parameter U)
               Note : the generated object LIG1 will contain OBJET1
               followed by the polynomial curve

'PFIN'        : key word (MOT type) followed by :
 OBJET2       : if OBJET2 is a POINT type object (its coordinates 
                can be obtained for the value U2 of the parameter U), 
                the curve final point is OBJET2
                if OBJET1 is a MAILLAGE type object (inevitably a line), 
                the original point of OBJET2 will be the curve final
                point (its coordinates can be obtained for the value U2
                of the parameter U)
                   Note : the generated object LIG1 will contain the 
                   polynomial curve followed by OBJET2    

    POIN0,       : points of the curve polynomial representation
    POIN1,         (POINT type)
    POIN2, ...     these points do not pertain to the curve
                   POIN0 and POIN1 are compulsory

   'PARAMETRE'   : key word (MOT type) followed by :
    FLOT1, FLOT2 : boundaries of the parameter U of the curve polynomial
                   (FLOTTANT type) equal to (0,1) by default.

   'REGULIER'    : key word (MOT type) indicating that the curve will
                   have to be split into elements whose lengths will
                   be determined according to the curvilinear abscissa
                   and not in relation to the parameter U

    LIG1         : generated object (MAILLAGE type)

 

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