Manual pages | Cast3M

$$$$ POIN     NOTICE  CHAT      11/09/12    21:17:39     7124           
                                             DATE     11/09/12


    Operator POIN                             See also : ELEM  MAXI
    -------------                                        MOTS  MINI

    The functions of this operator vary with the data.

   ----------------
   | 1st function |
   ----------------

    The POIN operator create a point by giving its coordinates.

    POIN1 = POIN |FLOT1 (FLOT2) (FLOT3)| ;
                 | LREE1               | 

    Contents:
    _________

    FLOT1      : first coordinate (FLOTTANT type)

    FLOT2      : second coordinate (FLOTTANT type) in DIMEnsion 2 or 3

    FLOT3      : third coordinate (FLOTTANT type) in DIMEnsion 3

    LREE1      : list of coordinates (LISTREEL type)

    POIN1      : the created point (POINT type)

    Note:
    _____

    In DIMEnsion 1, the only way for creating a point is this function of the
POIN operator.
    In DIMENsions 2 and 3, the POIN operator is equivalent to the currently
used syntax : POIN1 = FLOT1 FLOT2 (FLOT3);

   ----------------
   | 2nd function |
   ----------------

    The POIN operator extracts one or several points from a geometry.

    POINi = GEO1  POIN | N1
                       | 'INITIAL'
                       | 'FINAL'
                       | 'PROC'   POIN1
                       | 'DROIT'  POIN1  POIN2              (FLOT1)
                       | 'PLAN'   POIN1  POIN2 POIN3        (FLOT1)
                       | 'CYLI'   AXEI1  AXEJ2 POIN1        (FLOT1)
                       | 'CONE'   SOMM1  AXEI1 POIN1        (FLOT1)
                       | 'SPHE'   CENTR1 POIN1              (FLOT1)
                       | 'TORE'   CENTR1 AXEI1 CENTR2 POIN1 (FLOT1)

    Contents:
    _________

    GEO1        : geometry (MAILLAGE type)

   According to the key word, the POIN operator extracts from GEO1:

    -             the N1-ith point  | In this case, GEO1  must only be
                                    | composed of POI1 or SEG2 type
                                    | elements (see note)

    - 'INITIAL' : the first point   | GEO1 must only be composed of POI1,
    - 'FINAL'   : the last point    | SEG2 or SEG3 type elements

    - 'PROC'    : the closest point to POIN1 (POINT type)

    - 'DROIT'   : the set of points situated on the straight line
                  POIN1 POIN2 (POINT type)
    - 'PLAN'    : the set of points situated on the plane POIN1 POIN2
                  POIN3 (POINT type)
    - 'CYLI'    : the set of points situated on the cylinder of axis
                  AXEI1 AXEJ1 (POINT type) passing through the point
                  POIN1 (POINT type)
    - 'CONE'    : the set of points situated on the cone apex SOMM1
                  (POINT type) whose axis is AXEI1 SOMM1 (POINT type)
                  and passes through the point POIN1 (POINT type)
    - 'SPHE'    : the set of points situated on the sphere of centre
                  CENTR1 passing through the point POINT1
    - 'TORE'    : the set of points situated on the torus of centre
                  CENTR1 (POINT type) of which one point of axis is
                  AXEI1 (POINT type), of which the centre of the small
                  circle is CENTR2 (POINT type) and passing through the
                  point POIN1 (POINT type) 

    A proximity criterion may be input by means of the key words
 'DROIT', 'PLAN', 'CYLI', 'CONE', 'SPHE', and 'TORE':

    - FLOT1     : distance criterion (FLOTTANT type)

    Note:
    _____

    GEO1 must be supplied before POIN or just after.

    In order to extract points from an object GEO1 which is not
composed of POI1 or SEG2 type elements, GEO1 must be turned into
an object composed of POI1 type elements (see CHANGER operator)
before using the POIN operator. If GEO1 is compound of SEG2 elements
the syntax POIN GEO1 NN gives back the first node of the NNth element.

    The 'DROI','PLAN','CYLI','CONE',SPHE','TORE' keywords are not
available in DIMEnsion 1.

    The CRIT criterion equals by default one tenth of the current density.

   ----------------
   | 3rd function |
   ----------------

    The POIN operator extracts (or creates when dealing with a Gauss
point) from a field, the point(s) supporting the maximum or the minimum
of the set of values of one or several components of the field, or
supporting the values verifying a relation of comparison with respect
to one (or two) value(s) of reference.


                     |    'MAXI'           |           'AVEC'
   GEO1 = CHE1 POIN  |    'MINI'           | ('ABS') (        LMOTS1 );
                     |                     |           'SANS'
                     |'SUPERIEUR' |        |
                     |'EGSUPE'    |        |
                     |'EGALE'     | FLOT1  |
                     |'EGINFE'    |        |
                     |'INFERIEUR' |        |
                     |'DIFFERENT' |        |
                     |'COMPRIS' FLOT1 FLOT2|

    Contents:
    _________

    CHE1     : CHPOINT or MCHAML type object

   'ABS'     : key word indicating that the absolute value maximum
               or minimum is requested

   LMOTS1    : LISTMOTS type object containing the name of the components
               to be taken into account or to be excluded depending on
               whether the word 'AVEC' or 'SANS' is mentioned (if
               LMOTS1 lacks, all the components will be considered)

    GEO1     : MAILLAGE type object (containing single-node elements POI1)

    FLOT1    : value of reference (FLOTTANT type)

    FLOT2    : value of reference (FLOTTANT type)


    Note:   In the COMPRIS option, the boundaries FLOT1 and FLOT2
    _____   are included in the interval.