Creating solid 3d object

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zohar
zohar 2011-4-13
Dear all matlab users,
I want to generate solid 3d object
n = 100;
a=1;
% r const
teta = linspace(0,pi/2,n);teta =teta';
phi = linspace(0,pi/2,n);
r=1;
x = r.*sin(teta)*cos(phi) ;
y = r.*sin(teta)*sin(phi) ;
z = r.*cos(teta)*ones(1,n);
figure;plot3(x,y,z,'or');grid minor
% phi const
teta = linspace(0,pi/2,n);
r = linspace(0,a,n);r=r';
phi = pi/4;
x = r*sin(teta)*cos(phi);
y = r*sin(teta)*sin(phi);
z = r*cos(teta);
figure;plot3(x,y,z,'or');grid minor
Now I want to combine thos variables so it would be solid 3d object
I don't want to use for loop.
I think the solution should be somthing like,
multiply of a horizontal 2d matrix by vertical 2d matrix
and multiplication result is 3d matrix.
Any help would be appreciated...

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回答（1 个）

Walter Roberson
Walter Roberson 2011-4-13
MATLAB does not have any built-in 3D matrix multiplication.

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