Parameters

x1

The x-coordinate of the starting point of the curve.

y1

The y-coordinate of the starting point of the curve.

x2

The x-coordinate of the first control point for the curve.

y2

The y-coordinate of the first control point for the curve.

x3

The x-coordinate of the second control point for the curve.

y3

The y-coordinate of the second control point for the curve.

x4

The x-coordinate of the endpoint of the curve.

y4

The y-coordinate of the endpoint of the curve.

Remarks

The cubic curve is constructed from the first point to the fourth point by using the second and third points as control points.

If there is a previous line or curve segment in the figure, a line is added to connect the endpoint of the previous segment to the starting point of the cubic curve.

Requirements