B4J Tutorial CausticRaysCircle

Have converted this Processing Github Project to B4J. Very interesting to watch this being drawn in real time. Just B4J default libs required.

Have not used the default Processing PVector library for the project - have hard coded the Vector multiplication, subtraction, addition, dot product, magnitude, normalization, etc inside the B4J project.

Enjoy!

50 rays

100 rays

1000 rays

 

[Sandman]

Nice! ?

Here's a channel with these kinds of animations

https://youtube.com/@animations_ag

Such as this one

 

[Johan Schoeman]

Have update the sample in post #1 - it now works as what it should.

 

[Johan Schoeman]

Nice! ?

Here's a channel with these kinds of animations

https://youtube.com/@animations_ag

Such as this one

A very rough draft of a ray bouncing inside an ellipse with equation 4x^2 + y^2 = 100
It is based on this web posting

    fromPoint.x = 0
    fromPoint.y = 10.1
  
    toPoint.x = 1.4
    toPoint.y = -9.6

 

[Johan Schoeman]

The attached B4J project will randomly select a ray starting point and then a randomly selected "first bounce" point and then continue to bounce the ray according to the "laws of reflection inside an ellipse". It draws some interesting patterns inside the ellipse baaed on the randomly selected start and first-bounce points.

Makes me wonder why the Oval Office is an oval office....?