selfImDrawList handle on which this method operates.
centerShape center in absolute screen coordinates.
radiusHorizontal and vertical ellipse radii in pixels, before rotation.
rotEllipse rotation angle in radians.
a_minStart/end angle of the arc in radians.
a_maxStart/end angle of the arc in radians.
num_segmentsCurve tessellation segment count; 0 lets ImGui choose automatically.
Append an elliptical arc to the current path.