FUNCTION above_plane

(* SCHEMA step_merged_ap_schema; *)

-- IN AP238 STEP-NC/AP242
FUNCTION above_plane
      (p1 : cartesian_point;
       p2 : cartesian_point;
       p3 : cartesian_point;
       p4 : cartesian_point ) : REAL;
   LOCAL
      dir2 : direction := dummy_gri || direction([ 1.0, 0.0, 0.0 ]);
      dir3 : direction := dummy_gri || direction([ 1.0, 0.0, 0.0 ]);
      dir4 : direction := dummy_gri || direction([ 1.0, 0.0, 0.0 ]);
      val : REAL;
      mag : REAL;
   END_LOCAL;
      IF p1.dim <> 3 THEN
         RETURN (?);
      END_IF;
      REPEAT i := 1 TO 3;
         dir2.direction_ratios[i] := p2.coordinates[i] - p1.coordinates[i];
         dir3.direction_ratios[i] := p3.coordinates[i] - p1.coordinates[i];
         dir4.direction_ratios[i] := p4.coordinates[i] - p1.coordinates[i];
         mag := dir4.direction_ratios[i] * dir4.direction_ratios[i];
      END_REPEAT;
      mag := SQRT(mag);
      val := mag * dot_product(dir4, cross_product(dir2, dir3).orientation);
      RETURN (val);
END_FUNCTION;

Referenced By

Defintion above_plane is references by the following definitions:

Definition	Type
convex_hexahedron	ENTITY
hexahedron_volume	ENTITY
same_side	FUNCTION
tetrahedron	ENTITY
tetrahedron_volume	ENTITY

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2020-07-28T17:02:20-04:00