Circle Constructors

You can manage the creation of circle by defining the formula using circle constructors.


  • circleCtrRadius (center: Point, support: Surface, radius: Length, limits: Integer, start: Angle, end: Angle): Circle Creates a circular arc from its center and radius. If the argument 4 is 0, arguments 5 and 6 are taken into account. Otherwise, a circle is created.

  • circleCtrPt (center: Point, point: Point, support: Surface, limits: Integer, start: Angle, end: Angle): Circle

    Creates a circular arc from its center and another point located on the circle. If the argument 4 is 0, arguments 5 and 6 are taken into account. Otherwise, a circle is created.

  • circle2PtsRadius (point1: Point, point2: Point, support: Surface, radius: Length, orientation: Boolean, limits: Integer): Circle

    Creates a circular arc. The points specified in arguments 1 and 2 are located on the arc to be created and define the arc limits when the integer specified in the argument 6 is 0. When 0 is specified in the argument 6, modifying the argument 5 boolean value allows you to display the alternative arc.is specified in the argument 6, modifying the argument 5 boolean value allows you to display the alternative arc.

  • Circle3Pts (point1: Point, point2: Point, point3: Point, limits: Integer): Circle

    Creates one or more circular arcs passing through three points. When 0 is specified in the argument 4, the first and third points define the arc limits. When 1 is specified in the argument 4 the whole circle is defined. When 2 is specifies in the argument 4 the direct circle is defined. When 3 is specified in the argument 4, the complementary circle is defined.

  • circleBitgtradius (curve1: Curve, curve2: Curve, support: Surface, radius: Length, orientation1: Boolean, limits: Integer): Circle

    Creates one or more circular arcs tangent to two curves. When 0 is specified in the argument 7, the tangency points define the arc limits. Modifying orientation1 argument value allows you to reverse the arc orientation with respect to the curve1 curve (there may be no solution). Modifying orientation2 argument value allows you to reverse the arc orientation with respect to the curve2 curve.

  • circleBitgtRadius (curve: Curve, point: Point, support: Surface, radius: Length, orientation1: Boolean, limits: Integer): Circle

    Creates one or more circular arcs tangent to two curves.

  • circleBitgtPoint (curve1: Curve, curve2: Curve, pt: Point, support: Surface, orientation1: Boolean, limits: Integer): Circle

    Creates one or more circular arcs tangent to two curves and passing through a point on the second curve. When 0 is specified in the argument 7, the tangency points define the arc limits. Modifying the orientation1 argument value allows you to reverse the arc orientation with respect to the crv1 curve (there may be no solution). Modifying the orientation2 argument value allows you to reverse the arc orientation with respect to the crv2 curve.

  • circleTritgt (curve1: Curve, curve2: Curve, curve3: Curve, support: Surface, radius: Length, orientation1: Boolean, limits: Integer): Circle

    Creates one or more circular arcs tangent to three curves. When 0 is specified in the argument 8, the tangency points define the arc limits. Modifying the value of an orientation argument allows you to reverse the arc orientation with respect to the curve which has the same order in the argument specification (orientation1 to be associated with curve1.

  • circleCtrAxis (axis: Line, point: Point, radius: Length, start: Angle, end: Angle, projectionmode: Boolean, limits: Integer): Circle

    Creates a circle using a point and axis/line as input elements and corresponds to `Center and axis` type of circle in the user interface.


    • axis: Circle created on a plane perpendicular to this axis.
    • point: Element used for center computation.
    • radius: Radius of the circle created.
    • start: Start angle of circle. Used only if limits value is 0.
    • end: End angle of circle. Used only if limits value is 0.
    • projectionmode: ProjectionMode = True implies that the point specified will be projected on to axis/line and will be used as center of the circle, projectionMode = False implies that point will be center of the circle.
    • limits: Circle limitation type. 0 for Angles i.e Part arc, 1 for whole circle
      Point and axis" with projection

      Point and axis" without projection


  • circleCtrtgt (point: Point, curve: Curve, curve orientation: Boolean, tangent orientation: Boolean, support: Surface): Circle

Creates a circle using center, curve and support and corresponds to `Center and tangent` type of circle in the user interface. Orientations are needed to select the proper circle in case of multiple solutions.


  • point: center of the circle
  • curve: curve to which the created circle will be tangent.
  • curve orientation: Tangent curve orientation for circle computation.
  • tangent orientation: Tangent orientation of tangent curve for circle computation.
  • support: support surface.


  • circleCtrtgt (point: Point, curve: Curve, curve orientation: Boolean, tangent orientation: Boolean, support: Surface): Circle

Creates a circle using center, curve and support and corresponds to `Center and tangent` type of circle in the user interface. Orientations are needed to select the proper circle in case of multiple solutions.


  • point: center of the circle
  • curve: curve to which the created circle will be tangent.
  • curve orientation: Tangent curve orientation for circle computation.
  • tangent orientation: Tangent orientation of tangent curve for circle computation.
  • support: support surface.