FUNCTION scalar_times_vector
(scalar : REAL, vec : vector_or_direction) : vector;
LOCAL v : direction; mag : REAL; result : vector; END_LOCAL; IF NOT EXISTS (scalar) OR NOT EXISTS (vec) THEN RETURN (?) ; ELSE IF 'GEOMETRY_SCHEMA.VECTOR' IN TYPEOF (vec) THEN v := dummy_gri || direction(vec\vector.orientation.direction_ratios); mag := scalar * vec.magnitude; ELSE v := dummy_gri || direction(vec.direction_ratios); mag := scalar; END_IF; IF (mag < 0.0 ) THEN REPEAT i := 1 TO SIZEOF(v.direction_ratios); v.direction_ratios[i] := -v.direction_ratios[i]; END_REPEAT; mag := -mag; END_IF; result := dummy_gri || vector(normalise(v), mag); END_IF; RETURN (result); END_FUNCTION; -- scalar_times_vector
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