1<map id="Geom2d_Conic" name="Geom2d_Conic"> 2<area shape="rect" id="node5" href="$class_geom2d___circle.html" title="Describes a circle in the plane (2D space). A circle is defined by its radius and, as with any conic curve, is positioned in the plane with a coordinate system (gp_Ax22d object) where the origin is the center of the circle. The coordinate system is the local coordinate system of the circle. The orientation (direct or indirect) of the local coordinate system gives an explicit orientation to the circle, determining the direction in which the parameter increases along the circle. The Geom2d_Circle circle is parameterized by an angle: P(U) = O + R*Cos(U)*XDir + R*Sin(U)*YDir where: " alt="" coords="5,304,116,331"/> 3<area shape="rect" id="node6" href="$class_geom2d___ellipse.html" title="Describes an ellipse in the plane (2D space). An ellipse is defined by its major and minor radii and..." alt="" coords="141,304,258,331"/> 4<area shape="rect" id="node7" href="$class_geom2d___hyperbola.html" title="Describes a branch of a hyperbola in the plane (2D space). A hyperbola is defined by its major and mi..." alt="" coords="282,304,418,331"/> 5<area shape="rect" id="node8" href="$class_geom2d___parabola.html" title="Describes a parabola in the plane (2D space). A parabola is defined by its focal length (i..." alt="" coords="443,304,572,331"/> 6<area shape="rect" id="node2" href="$class_geom2d___curve.html" title="The abstract class Curve describes the common behavior of curves in 2D space. The Geom2d package prov..." alt="" coords="219,155,329,181"/> 7<area shape="rect" id="node3" href="$class_geom2d___geometry.html" title="The general abstract class Geometry in 2D space describes the common behaviour of all the geometric e..." alt="" coords="207,80,341,107"/> 8<area shape="rect" id="node4" href="$class_standard___transient.html" title="Abstract class which forms the root of the entire Transient class hierarchy. " alt="" coords="207,5,341,32"/> 9</map> 10