IfcMakeArrayOfArray

BACnet MVD

#### IfcMakeArrayOfArray

Natural language names

| Make Array Of Array

##### Semantic definitions at the function

Function Definition

> NOTE Definition according to ISO/CD 10303-42:1992
> This function make array of array builds an array of arrays from a list of lists. The function first checks that the specified array dimensions are compatible with the sizes of the lists, and in particular, verifies that all the sub-lists contain the same number of elements. A null result is returned if the input data is incompatible with the dimensions. This function is used to construct the arrays of control points and weights for a B-spline surface.

> NOTE Function adapted from make_array_of_array defined in ISO 10303-42.

> HISTORY New function in IFC4

##### Formal representations

EXPRESS Specification
`

FUNCTION IfcMakeArrayOfArray
(Lis : LIST[1:?] OF LIST [1:?] OF GENERIC : T;
Low1, U1, Low2, U2 : INTEGER):
ARRAY [Low1:U1] OF ARRAY [Low2:U2] OF GENERIC : T;
LOCAL
Res : ARRAY[Low1:U1] OF ARRAY [Low2:U2] OF GENERIC : T;
END_LOCAL;
(* Check input dimensions for consistency *)
IF (U1-Low1+1) <> SIZEOF(Lis) THEN
RETURN (?);
END_IF;
IF (U2 - Low2 + 1 ) <> SIZEOF(Lis[1]) THEN
RETURN (?) ;
END_IF;
(* Initialise Res with values from Lis[1] *)
Res := [IfcListToArray(Lis[1], Low2, U2) : (U1-Low1 + 1)];
REPEAT i := 2 TO HIINDEX(Lis);
IF (U2-Low2+1) <> SIZEOF(Lis[i]) THEN
RETURN (?);
END_IF;
Res[Low1+i-1] := IfcListToArray(Lis[i], Low2, U2);
END_REPEAT;
RETURN (Res);
END_FUNCTION;

`

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