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Purpose:
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Defines a
bounded_arc as a subtype of a
bounded_curve.
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Derivation:
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bounded_arc : bounded_curve : ACIS_OBJECT : -
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Filename:
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kern/kernel/geomhusk/bnd_arc.hxx
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Description:
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This class adds no new data to the
bounded_curve class from which it is derived, but it provides additional constructors and redefines some virtual functions.
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References:
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by KERN
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bounded_curve, bounded_line
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Constructor:
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public: bounded_arc::bounded_arc
();
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C++ allocation constructor requests memory for this object but does not populate it.
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public: bounded_arc::bounded_arc
(
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const bounded_arc&
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// given bounded arc
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);
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C++ copy constructor requests memory for this object and populates it with the data from the object supplied as an argument.
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public: bounded_arc::bounded_arc
(
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const SPAposition& center,
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// center
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const SPAposition& pt1,
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// edge point 1
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const SPAposition& pt2,
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// edge point 2
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const SPAunit_vector& normal
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// normal vector
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);
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C++ initialize constructor requests memory for this object and populates it with the data supplied as arguments.
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If
pt1 equals
pt2, then a full circle is created. Use
normal only if
center,
pt1, and
pt2 do not determine a plane.
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public: bounded_arc::bounded_arc
(
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const SPAposition& center,
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// center
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const SPAunit_vector& normal,// normal vector
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const SPAvector& majax,
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// 0-angle/radius
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// vector
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double t0,
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// major axis start
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// angle
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double t1,
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// major axis end
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// angle
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double ratio
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// radius ratio
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= 1.0
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);
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C++ initialize constructor requests memory for this object and populates it with the data supplied as arguments.
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The angles are in radians. The radius is the length of the
major_axis vector. The
center_pt +
major_axis corresponds to the point at the 0-degree angle on the arc.
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public: bounded_arc::bounded_arc
(
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const SPAposition& center,
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// center
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double radius,
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// radius
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const SPAunit_vector& normal
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// plane normal
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);
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C++ initialize constructor requests memory for this object and populates it with the data supplied as arguments.
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public: bounded_arc::bounded_arc
(
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const SPAposition& pt1,
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// position 1
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const SPAposition& pt2,
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// position 2
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const SPAposition& pt3,
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// position 3
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logical full
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// positions colinear?
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);
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C++ initialize constructor requests memory for this object and populates it with the data supplied as arguments.
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The arc passes through three points. If the positions are colinear, this method returns an error.
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public: bounded_arc::bounded_arc
(
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const SPAposition& pt1,
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// position 1
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const SPAposition& pt2,
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// position 2
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const SPAunit_vector& normal,// normal vector
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logical full
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// positions
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// colinear?
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);
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C++ initialize constructor requests memory for this object and populates it with the data supplied as arguments.
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Creates an arc given two points on the diagonal. If the positions are colinear, this method returns an error.
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public: bounded_arc::bounded_arc
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EDGE*,
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// edge
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const SPAtransf*
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// transformation
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);
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C++ initialize constructor requests memory for this object and populates it with the data supplied as arguments.
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The edge must be an ellipse.
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Methods:
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public: virtual logical bounded_arc::change_end_pt
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const SPAposition&
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// end position
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);
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Changes the end position.
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public: virtual logical
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bounded_arc::change_start_pt (
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const SPAposition&
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// start position
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);
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Changes the start position.
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public: virtual bounded_curve* bounded_arc::copy
(
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const SPAtransf*
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// transformation
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= NULL
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) const;
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Creates a transformed copy.
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public: SPAposition bounded_arc::get_center
() const;
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Returns the center.
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public: SPAvector bounded_arc::get_major_axis
() const;
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Returns the major axis.
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public: virtual SPAunit_vector
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bounded_arc::get_normal () const;
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Returns the
SPAunit_vector normal.
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public: double bounded_arc::get_radius
() const;
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Returns the radius.
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public: double
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bounded_arc::get_radius_ratio () const;
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Returns the radius ratio of the arc.
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public: sense_type bounded_arc::get_sense
() const;
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Returns the sense.
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public: double bounded_arc::get_subtend
() const;
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Returns the subtended angle.
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public: virtual logical bounded_arc::is_arc
() const;
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Determines if entity is an arc.
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Returns
TRUE if the given
ENTITY is a
bounded_arc; otherwise, it returns
FALSE.
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public: void bounded_arc::set_center
(
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const SPAposition&
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// arc center position
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);
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Modifies the arc center position.
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public: void bounded_arc::set_major_axis
(
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const SPAvector&
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// arc major axis
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);
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Modifies the major axis of the arc.
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public: void bounded_arc::set_normal
(
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const SPAunit_vector&
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// arc normal
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);
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Modifies the normal to the arc.
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public: void bounded_arc::set_radius
(
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double
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// arc radius
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);
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Modifies the arc radius.
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public: void bounded_arc::set_radius_ratio
(
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double
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// arc radius ratio
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);
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Modifies the radius ratio of the arc.
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