FUNCTION derive_angle

(* SCHEMA step_merged_ap_schema; *)

-- DIFF IN AP203e2
-- IN AP203e2/AP242
FUNCTION derive_angle
      (placement_1 : axis2_placement_3d;
       placement_2 : axis2_placement_3d ) : plane_angle_measure;
   LOCAL
      v1 : direction;
      v2 : direction;
      mag_v1 : REAL;
      mag_v2 : REAL;
      theta : plane_angle_measure;
   END_LOCAL;
      v1 := placement_1.p[1];
      v2 := placement_2.p[1];
      mag_v1 := SQRT(v1.direction_ratios[1] * v1.direction_ratios[1] + v1.direction_ratios[2] * v1.direction_ratios[2]);
      mag_v2 := SQRT(v2.direction_ratios[1] * v2.direction_ratios[1] + v2.direction_ratios[2] * v2.direction_ratios[2]);
      IF (mag_v1 = 0) OR (mag_v2 = 0) THEN
         theta := 0;
         RETURN (theta);
      END_IF;
      theta := ACOS((v1.direction_ratios[1] * v2.direction_ratios[1] + v1.direction_ratios[2] * v2.direction_ratios[2]) / mag_v1 * mag_v2);
      RETURN (theta);
END_FUNCTION;

Referenced By

Defintion derive_angle is references by the following definitions:

Definition	Type
transformation_with_derived_angle	ENTITY

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