- R0=1;
- a=12*R0;b=9*R0;T0=2*pi;
- T=5*T0;dt=pi/100;t=[0:dt:T]';
- f=sqrt(a^2-b^2);
- th=12.5*pi/180;
- E=exp(-t/20);
- x=E.*(a*cos(t)-f);
- y=E.*(b*cos(th)*sin(t));
- z=E.*(b*sin(th)*sin(t));
- subplot(2,1,1),plot3(x,y,z,'g')
- view([117 37])
- [X,Y,Z]=sphere(30);X=R0*X;Y=R0*Y;Z=R0*Z;
- grid on,hold on,surf(X,Y,Z),shading interp
- x1=-18*R0;x2=6*R0;y1=-12*R0;y2=12*R0;z1=-6*R0;z2=6*R0;
- axis([x1 x2 y1 y2 z1 z2])
- view([117 37])
- p=0.2;
- subplot(2,1,2),comet3(x,y,z,p)
[ 本帖最后由 yejet 于 2006-9-17 19:22 编辑 ] |
