Method FromBulge

Namespace: GeometryHelper.Geometry

Assembly: GeometryHelper.dll

FromBulge(GeoPoint2, GeoPoint2, double)

Creates the arc between two points with a given bulge, the number AutoCAD stores per vertex.

public static GeoArc2 FromBulge(GeoPoint2 start, GeoPoint2 end, double bulge)

Parameters

start GeoPoint2: Where the arc starts.
end GeoPoint2: Where the arc ends.
bulge double: The tangent of a quarter of the angle the arc sweeps: positive counter-clockwise, negative clockwise.

Returns

GeoArc2: The arc from the start to the end.

Remarks

A bulge of one is a half turn, and the sign says which way it goes. A bulge of zero would be a straight segment rather than an arc, which is why it is refused here: a chain stores that as an edge with no bulge instead.

Exceptions

ArgumentOutOfRangeException: Thrown when the bulge is zero or not a number.
InvalidOperationException: Thrown when the two points are the same, so there is no chord to bulge.