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内容简介作者简介 - 科学与工程计算系

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6.3.3 透视、镂空和裁切<br />

40<br />

30<br />

20<br />

10<br />

0<br />

4<br />

6.3.3.1 图形的透视<br />

2<br />

0<br />

-2<br />

-4<br />

-4<br />

图 6.3-2<br />

【例 6.3.3.1-1】透视演示<br />

[X0,Y0,Z0]=sphere(30);<br />

X=2*X0;Y=2*Y0;Z=2*Z0;<br />

surf(X0,Y0,Z0);<br />

shading interp<br />

hold on,mesh(X,Y,Z),colormap(hot),hold off<br />

hidden off<br />

axis equal,axis off<br />

6.3.3.2 图形的镂空<br />

图 6.3-3<br />

【例 6.3.3.2-1】演示:如何利用“非数”NaN,对图形进行剪切处理。<br />

t=linspace(0,2*pi,100); r=1-exp(-t/2).*cos(4*t);<br />

[X,Y,Z]=cylinder(r,60);<br />

ii=find(X

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