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:: drafts :: com :: sun :: star :: geometry ::
struct EllipticalArc
Description This structure contains all parameters necessary to specify
arbitrary elliptical arcs. The parameters are modelled closely
after the SVG specification.
As with the parameters below, there are mostly four different
ellipses arcs (two different ellipses, on which four different
arcs connect start and end point) which satisfy the given set of
constrains, there are two flags indicating which one of those
ellipses should be taken.
Elements' Summary
StartPosition Start point of the arc
EndPosition End point of the arc
RadiusX Main radius in x direction of the ellipse this arc is part of
RadiusY Main radius in y direction of the ellipse this arc is part of
XAxisRotation Rotation angle of the x axis of the ellipse relative to the x
axis of the reference coordinate system
LargeArcFlag If true, and there's a choice, take the longer one of two arcs
connecting start and end point.
SweepFlag If true, and there's a choice, take the arc that goes
clock-wise from start to end point.
Elements' Details
StartPosition
RealPoint2D StartPosition ;
Description Start point of the arc
EndPosition
RealPoint2D EndPosition ;
Description End point of the arc
RadiusX
double RadiusX ;
Description Main radius in x direction of the ellipse this arc is part of
RadiusY
double RadiusY ;
Description Main radius in y direction of the ellipse this arc is part of
XAxisRotation
double XAxisRotation ;
Description Rotation angle of the x axis of the ellipse relative to the x
axis of the reference coordinate system
LargeArcFlag
boolean LargeArcFlag ;
Description If true, and there's a choice, take the longer one of two arcs
connecting start and end point.
SweepFlag
boolean SweepFlag ;
Description If true, and there's a choice, take the arc that goes
clock-wise from start to end point.
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