Hi all ,
I have a ‘bouncing ball’ , of sorts . If you have followed Dan Shiffmans’ tutorials you must have encountered one. I want to show the underlying captured video only within the bouncing ball, like a spotlight.
I am attaching a pic showing the video and the circle .
Any hints into which direction to explore would be great.
Thanks Jonathan
Have you tried the mask() function ?
https://processing.org/reference/PImage_mask_.html
Thanks jb4X -
I am using p5.js - does not seem to have a mask .
If it did (or does and I missed it) : how would you go about it ? I think I need an image with the circle white and the rest black (masking part - right ?) and then move the image rather than the circle? Am I in the right direction?
Thanks again , Jonathan.
Ho sorry,
I didn’t see that you posted in the P5.js section.
I’m working with processing and assume that everyone is 
Anyway, the link that GoToLoop posted is the equivalent in P5.
For the rest you are on the right track I think 
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