Live Stream #39: Q&A and Reaction Diffusion Algorithm

Comments

19 responses to “Live Stream #39: Q&A and Reaction Diffusion Algorithm”

1. 

   Shirish Jadav

   September 30, 2017

   hey what did you said about making RD faster??? compution behind scene??

   Reply
2. 

   Hector Solatges

   September 30, 2017

   A place to play : http://experiences.math.cnrs.fr/Structures-de-Turing.html

   Reply
3. 

   C-Zar

   September 30, 2017

   You should make a platformer like Mario or something for a coding challenge 🙂

   Reply
4. 

   Gabi

   September 30, 2017

   I love that Reaction Diffusion thing! Very complex, very beautiful. Here's my take on it, mostly your code translated into plain javascript. I've added some color: https://codepen.io/enxaneta/pen/NNQNzB

   Reply
5. 

   Roberto Stelling

   September 30, 2017

   Hi Daniel,
   Reaction Diffusion is really cool. I've tweaked the code a little bit and added a single Laplace function:
   function lapA(x,y) {
   return lg(x, y, "a");
   }

   function lapB(x,y) {
   return lg(x,y, "b");
   }

   function lg(x,y, ab) {
   var pesos = [[0.05, 0.2, 0.05], // [x-1,y-1][x-1,y][x-1][y+1]
   [ 0.2, -1, 0.2], // [x,y-1][x,y][x,y+1]
   [0.05, 0.2, 0.05]]; // [x+1,y-1][x+1,y][x+1,y+1]
   var soma = 0;
   for (i = 0; i < 3; i++)
   for (j = 0; j < 3; j++)
   soma += grid[x+i-1][y+j-1][ab] * pesos[i][j];
   return soma;
   }

   I'm not happy with performance and color though, will play with it a little more. Is there a place to comment other than youtube ?

   Reply
6. 

   Russell Cox

   September 30, 2017

   After a little bit of digging, I found a web-based computer craft ide that might help keep us all in the browser http://gravlann.github.io/ (code @ https://github.com/1lann/Mimic). You could maybe contribute some processing code to their repository that emulates turtle actions? I don't think that exists in the community anywhere

   Anywho, I'd be interested. Requests: pathfinding, or finite state machine stuff

   Thanks for your videos!

   Reply
7. 

   Ivan Ribeiro

   September 30, 2017

   Laplace functions shouldn't be squared and multiplied by a ? As the formula shows ?

   Reply
8. 

   Ian McDonald

   September 30, 2017

   It does not appear that the code corresponding to this video is within the GitHub repository to which you link.

   Reply
9. 

   Fzhe Yang

   September 30, 2017

   Thank you, Dan. From China 🙂

   Reply
10. 

    Ъьъыъьы Ъьъыъьыъ

    September 30, 2017

    OMG! No porn in most visited websites!? :O

    Reply
11. 

    bobmandude9889

    September 30, 2017

    I would love to see computer craft videos. That's how I originally was introduced into programming.

    Reply
12. 

    David Fodor

    September 30, 2017

    minecraft would be a nice way to attract kids to p5 and maths +UP

    Reply
13. 

    Benjamin Deharo

    September 30, 2017

    Could you do an ascii art generator with p5js please ?

    Reply
14. 

    Adrian Cacho

    September 30, 2017

    Please post this on github!

    Reply
15. 

    Artificial Ignorance

    September 30, 2017

    Who has problem with Dan drinking tea?

    Reply
16. 

    Alex Raja Gajah

    September 30, 2017

    you're awesome Daniel!

    Reply
17. 

    BaconKwagga

    September 30, 2017

    this was fun – https://www.youtube.com/watch?v=RZUDEaLa5Nw

    Reply
18. 

    Aqib Hasnain

    September 30, 2017

    Do you have experience with genetic algorithms? I think this would be an interesting topic to learn.

    Reply
19. 

    dn

    September 30, 2017

    aw missed the stream

    Reply