3D圆周运动Matlab

Question

I'm coding circular motion in Matlab , what is the appropriate formula or technique for circular motion in 3D-space , however I make this phenomena by the circle equation of sin and cos but it just rotates the object in circular motion (object itself) without taking its center , I want rotation with center of circle .

My Code:

for ii = 1:3

circular motion = [5*sin(ii) 5 5*cos(ii)];
%I used gain of 5 in order to give its speed.
%matrix circular motion contains XYZ coordinates.

end

Real life scenario of circular motion about center of circle:

Any suggestions or piece of formula that makes my strings unique are welcomed.

Answer 1

Assuming I understand your requirement correctly, to draw a circle in 3 dimensions, you would need to specify the plane on which the circle rests. Let me assume that the plane is z=1 plane.

So, you could plot a circle using:

t = 0:0.01:2*pi;
plot3(sin(t),cos(t),ones(size(t)));

Which gives this:

---

Bonus:

For a cool animation, try doing:

t = 0:0.01:2*pi;
comet3(sin(t),cos(t),ones(size(t)));