Circle rotating and whirling

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DARLINGTON ETAJE
DARLINGTON ETAJE on 24 Jul 2019
Edited: infinity on 25 Jul 2019
question.jfif
  4 Comments
DARLINGTON ETAJE
DARLINGTON ETAJE on 24 Jul 2019
radius = 5;
center = [10 15];
rotation = pi/3;
translation = [-0.5 -0.6];
rotTForm = [cos(rotation) sin(rotation); -sin(rotation) cos(rotation)];
viscircles(center,radius,'Color','b');
hold on;
%Circle just needs to be translated, as rotation won't have any effect on
%visuals
% viscircles(center+translation,radius,'Color','r');
% centerLines = center + [0 radius; 0 0; radius 0];
% rotatedLines = (centerLines - center)*rotTForm + center + translation;
% plot(centerLines(:,1), centerLines(:,2),'-.');
% hold on
% plot(rotatedLines(:,1), rotatedLines(:,2),'-.');
DARLINGTON ETAJE
DARLINGTON ETAJE on 24 Jul 2019
not exactly though

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Accepted Answer

infinity
infinity on 25 Jul 2019
Edited: infinity on 25 Jul 2019
Hello,
You can also refer this code,
close all
t = linspace(0,2*pi);
x = cos(t);
y = sin(t);
r1 = 3;
plot(r1*x,r1*y) % plot circle of radius 3
r2 = 2;
r3 = 1;
x2 = r2*cos(-t);
y2 = r2*sin(-t);
axis equal
hold on
for i = 1:length(t)
center = [x2(i),y2(i)];
h = viscircles(center,r3,'color','r');
pause(0.1)
delete(h)
end
hold off
where "r1" is radius of circle 1, and r3 is radius of inner circle.

More Answers (2)

darova
darova on 24 Jul 2019
Look at my idea. Do you like it?
t = linspace(0,2*pi);
x = cos(t);
y = sin(t);
plot(3*x,3*y) % plot circle of radius 10
axis equal
hold on
for t0 = t
h = plot(2*cos(t0),2*sin(t0),'or');
pause(0.03)
delete(h)
end
hold off
  2 Comments
DARLINGTON ETAJE
DARLINGTON ETAJE on 24 Jul 2019
I like your idea...how do I get the inner circle to be bigger...meaning how do I control the radius size of the bigger circle and the inner circle
darova
darova on 24 Jul 2019
What radius of a circle you want?

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DARLINGTON ETAJE
DARLINGTON ETAJE on 24 Jul 2019
the small circle moving around...how can I make it bigger

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