Animated 2D ball trajectory with images

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Pranav Nag 2021-11-11

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https://ww2.mathworks.cn/matlabcentral/answers/1584139-animated-2d-ball-trajectory-with-images

评论： Pranav Nag 2021-11-24

采纳的回答： Jon

I'm a beginner so please bear with me if this is elementary.

I have written the code to plot the trajectory of a basketball with the following input parameters:

Shooter's height (Determines launch coordinates)
Defender's height (Checks if the shot is blocked or not)
Separation between the shooter and defender (Additional input to check if the shot is blocked)

I have created a LiveScript which works well and have migrated to AppDesigner which also works well.

My end goal is to show an image of a basketball, the hoop and two human figures (maybe just static images of NBA players)

I want to show the basketball following the predicted trajectory as an animation in 2D.

Please help me with this? Happy to provide any additional information if required.

Thanks in advance!

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Pranav Nag 2021-11-24

Could you please help me with the code for this?

I want this image of a basketball to follow the path determined by my ode45 trajectory and move towards the image of the hoop.

Thanks in advance :)

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采纳的回答

Jon 2021-11-11

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https://ww2.mathworks.cn/matlabcentral/answers/1584139-animated-2d-ball-trajectory-with-images#answer_829339

在 MATLAB Online 中打开

You can plot a filled circle (or an approximation of one) by plotting filled polygons using the fill command.

For example to plot a red filled circle with radius of 3 centered at x=4, y=5 you could use

numPoints = 500; % use more or less to get better or worse approximation of circle 
r = 3; % radius
xc = 4;
yc = 5;
theta = linspace(0,2*pi,numPoints);
x = r*cos(theta);
y = r*sin(theta);
fill(x+xc,y+yc,'r')
axis([0 10 0 10])
axis('equal')