Adds an elliptical arc from the current point to x3, y3 with x1, y1 determining the tangent directions.
All coordinates are given relative to the current point.
This is the relative version of gsk.path_builder.PathBuilder.arcTo.
x coordinate of first control point
y coordinate of first control point
x coordinate of second control point
y coordinate of second control point
Adds an elliptical arc from the current point to x3, y3 with x1, y1 determining the tangent directions.
All coordinates are given relative to the current point.
This is the relative version of gsk.path_builder.PathBuilder.arcTo.