Animate number of particles through GUI

Answers

• Chrisir

  January 2016

  you should post your code or a mcve of your code

  http://stackoverflow.com/help/mcve

  anyway, maybe you want to look here:

  http://www.openprocessing.org/sketch/52558

  (I guess it's for processing 1 / 2)
• Chrisir

  January 2016

  I got it to work once but a new particle system was created every frame so not too useful..

  that doesn't sound to good

  actually, you should start the particle system in setup() and then run it in draw()

  so in draw read the values from the sliders (or read the values in the event functions, store them in a global var and that var gets used by draw())
• mcfetrmatt

  February 2016

  Hi Chrisir, thanks for the comments!

  I've uploaded the sketch here, name of sketch is "Sketch_02_GUI". There are some classes in there also.

  I can control the threshold for when points are connected but not the number of particles in the running sketch. What would you recommend? - Thanks!
• Chrisir

  February 2016

  well, compare the number of the particles with the number the GUI gives you

  then either append items p or remove items

  this would be easier if p were an ArrayList but never mind

  look at

  https://www.processing.org/reference/append_.html

  and

  https://www.processing.org/reference/shorten_.html

  for append iirc

  LimitedParticle element = new LimitedParticle (...........................); 
  LimitedParticle[] p= (LimitedParticle[]) append(p, element);