Tommy Martinez

Trying to recreate this example from Shiffman's Nature of Code.

https://natureofcode.com/book/chapter-1-vectors/

You will notice that some particles escape the bounding box as defined by the Param "area" in the codebox of gen. How might I optimize the code in codebox to keep all my little particles in their magic box? 

jit.gl.gridshape

jit.gen

jit.matrix

jit.noise

jit.anim.drive

jit.gl.camera

loadbang

jit.gl.mesh

codebox

toggle

jit.world

https://natureofcode.com/book/chapter-1-vectors/ 

You will notice that some particles escape the bounding box as defined by the Param "area" in the codebox of gen. How might I optimize the code in codebox to keep all my little particles in their magic box? 

Hitting spacebar restarts the simulation

Trying to recreate this example from Shiffman's Nature of Code.
https://natureofcode.com/book/chapter-1-vectors/ 
You will notice that some 

why-are-my-particles-escaping-lol

In conditional blocks you should use speed rather than in2 source vector, as if any particle crosses boundary in more than one direction, it only gets corrected speed for the last axis.

if (in1.x > area || in1.x < -area) {
    speed = vec(speed.x * -1, speed.y, speed.z);

}

if (in1.y > area || in1.y < -area) {
    speed = vec(speed.x, speed.y * -1, speed.z);

}
if (in1.z > area || in1.z < -area) {
    speed = vec(speed.x, speed.y, speed.z * -1);

}

Ah that makes total sense! Thank you :) That fixed things nicely. Here is final patch. 256, Bouncing balls in codebox for controlling parameters or visuals.

Why are my Particles escaping LOL