The algorithm of the painting curve is sometimes used in computer-aided design, and there are many ways to draw curves, the easiest way to work with the WINDOWS. It only needs to provide 3N 1 point, you can draw a Bezier curve. The function is Windows.Polybezier (Image1.canvas.Handle, ApointArray, n) other algorithm, such as three spline interpolation functions, etc. Curves are intended to have line integration, arc integrity, etc.
