FUNCTION IfcCorrectFillAreaStyle

(* SCHEMA IFC4; *)

FUNCTION IfcCorrectFillAreaStyle
  (Styles : SET[1:?] OF IfcFillStyleSelect)
  :LOGICAL;

LOCAL
   Hatching : INTEGER := 0;
   Tiles    : INTEGER := 0;
   Colour   : INTEGER := 0;
   External : INTEGER := 0;
END_LOCAL;


External := SIZEOF(QUERY(Style <* Styles |
  'IFC4.IFCEXTERNALLYDEFINEDHATCHSTYLE' IN
   TYPEOF(Style)));

Hatching  := SIZEOF(QUERY(Style <* Styles |
  'IFC4.IFCFILLAREASTYLEHATCHING' IN
   TYPEOF(Style)));

Tiles     := SIZEOF(QUERY(Style <* Styles |
  'IFC4.IFCFILLAREASTYLETILES' IN
   TYPEOF(Style)));

Colour    := SIZEOF(QUERY(Style <* Styles |
  'IFC4.IFCCOLOUR' IN
   TYPEOF(Style)));


IF (External > 1) THEN
  RETURN (FALSE);
END_IF;


IF ((External = 1) AND ((Hatching > 0) OR (Tiles > 0) OR (Colour > 0))) THEN
  RETURN (FALSE);
END_IF;


IF (Colour > 1) THEN
  RETURN (FALSE);
END_IF;

IF ((Hatching > 0) AND (Tiles >0)) THEN
  RETURN (FALSE);
END_IF;

RETURN(TRUE);

END_FUNCTION;

Referenced By

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