FUNCTION normalise

(* SCHEMA STRUCTURAL_FRAME_SCHEMA; *)


(* Modified for LPM/6 *)
FUNCTION normalise 
	(arg : vector_or_direction) : vector_or_direction;
   LOCAL
     ndim   : INTEGER;
     v      : direction;
     result : vector_or_direction;
     vec    : vector;
     mag    : REAL;
   END_LOCAL;
   
   IF NOT EXISTS (arg) THEN
     result := ?;
 (* When function is called with invalid data a NULL result is returned *)
   ELSE
     ndim := arg.dim;
     IF 'STRUCTURAL_FRAME_SCHEMA.VECTOR' IN TYPEOF(arg) THEN
       BEGIN
             v := dummy_gri || direction(arg.orientation.direction_ratios);
         IF arg.magnitude = 0.0 THEN
           RETURN(?);
         ELSE
          vec := dummy_gri || vector (v, 1.0);
         END_IF;
       END;
     ELSE
       v := dummy_gri || direction (arg.direction_ratios);
     END_IF;
     mag := 0.0;
     REPEAT  i := 1 TO ndim;
       mag := mag + v.direction_ratios[i]*v.direction_ratios[i];
     END_REPEAT;
     IF mag > 0.0 THEN
       mag := SQRT(mag);
       REPEAT  i := 1 TO ndim;
         v.direction_ratios[i] := v.direction_ratios[i]/mag;
       END_REPEAT;
       IF 'STRUCTURAL_FRAME_SCHEMA.VECTOR' IN TYPEOF(arg) THEN
         vec.orientation := v;
         result := vec;
       ELSE
         result := v;
       END_IF;
     ELSE
       RETURN(?);
     END_IF;
   END_IF;
   RETURN (result);
END_FUNCTION;  (* STEP Part 42 (modified in 2nd edition)  *)

Referenced By

Defintion normalise is references by the following definitions:

Definition	Type
axis1_placement	ENTITY
base_axis	FUNCTION
build_2axes	FUNCTION
build_axes	FUNCTION
cross_product	FUNCTION
dot_product	FUNCTION
first_proj_axis	FUNCTION
scalar_times_vector	FUNCTION
second_proj_axis	FUNCTION
vector_difference	FUNCTION

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2023-03-25T00:11:39-04:00