Plot a cylinder surface with axis along a line

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VINAYAK VINAYAK 2021-6-29

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评论： VINAYAK VINAYAK 2021-6-29

How do i plot a cylinder with axis along a line? Say for example the axis of the cylinder should be 1,1,1.

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Answer 1

KSSV 2021-6-29

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Read about the function cylinder. This will give you cylinder. Define your rotation marix, with the required angle and rotate the cylinder using this matrix.

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VINAYAK VINAYAK 2021-6-29

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Ok so here's the cylinder and final rotation matrix R. Now i want to rotate about x, y, z by 45 deg.(so that axis is along 1,1,1). How do i do that with the arrays (X,Y,Z) that i get from the cylinder function?

r = 10;
[X,Y,Z] = cylinder(r);
syms t
Rx = [1 0 0; 0 cos(t) -sin(t); 0 sin(t) cos(t)];
Ry = [cos(t) 0 sin(t); 0 1 0; -sin(t) 0 cos(t)];
Rz = [cos(t) -sin(t) 0; sin(t) cos(t) 0; 0 0 1];
R = Rx*Ry*Rz;