Hi Frederik,
To animate a more complex drawing with multiple elements (like rectangles, points, circles, etc.) using fanimator in MATLAB, you can indeed define a single function that encapsulates all the drawing commands for these elements. This function will accept the animation parameter (e.g., time t) and use it to update the positions or properties of each element accordingly.
Here's how you can define such a function, complexDrawing, and use it with fanimator. This example will animate a point and a circle together, similar to your request, but you can extend it by adding more graphical elements:
function complexDrawing(t)
% Clear existing plot to avoid superimposing drawings
cla
% Example of animating a point
plot(t, 1, 'r*');
% Hold on to plot additional elements
hold on
% Example of animating a circle
% Define the circle's parameters
r = 1; % radius
center_x = t;
center_y = 1;
theta = linspace(0, 2*pi, 100);
x = r * cos(theta) + center_x;
y = r * sin(theta) + center_y;
% Plot the circle
plot(x, y, 'b-');
% Adjust plot limits if necessary
axis equal
xlim([-10, 10]);
ylim([-10, 10]);
% Hold off after plotting all elements
hold off
end
Now, you can animate this complex drawing with a single call to fanimator:
% Define the animation time span and frame rate
tSpan = [0, 10];
frameRate = 24; % frames per second
% Create the animation window
figure
% Animate the complex drawing
fanimator(@(t) complexDrawing(t), 'AnimationRange', tSpan, 'FrameRate', frameRate);
% Add playback controls
playAnimation
In this setup, complexDrawing is a function that takes the animation parameter t (which could represent time or any other parameter you're animating over) and uses it to update all elements of the drawing. The cla command at the beginning of complexDrawing ensures that the previous frame's elements are cleared before drawing the next frame, preventing them from superimposing over one another.
This approach allows you to encapsulate the entire drawing logic within a single function, making your code cleaner and more manageable, especially for complex animations. You can extend the complexDrawing function by adding more plots and graphical elements as needed, using the parameter t to control their animation.
I hope this helps!
