Question

如何用matlab绘制贝塞尔曲线

10阶贝塞尔曲线（平面曲线）
，控制点分别为
(0, 1.2), (0.04, 0.6), (0.15, 0.51), (0.32, 0.88),
(0.31, 0.09), (0.52, 0), (0.62, 0.8), (0.89, 0.87), (0.92, 0.6), (0.92, 0.3),
(0.75, 0).

Answer 1

以下是运行结果：

程序代码：

function bezier(x,y)

 x=[0,0.04,0.15,0.32,0.31,0.52,0.62,0.89,0.92,0.75];

 y=[1.2,0.6,0.51,0.88,0.09,0,0.8,0.87,0.6,0.3,0];

n=length(x);

t=linspace(0,1);

xx=0;yy=0;

for k=0:n-1

    tmp=nchoosek(n-1,k)*t.^k.*(1-t).^(n-1-k);

    xx=xx+tmp*x(k+1);

    yy=yy+tmp*y(k+1);

end

if nargout==2

    X=xx;Y=yy;

end

h=plot(xx,yy);

if nargout==1

    X=h;