FFT Landscape generator

Answers

• kfrajer

  November 2016

  Format your code. Edit post, select code and hit ctrl+o. Make sure there is an empty line above and below your code.

  Kf
• chanof

  November 2016

  I did, any suggestion? Thanks!
• koogs

  November 2016

  that's expected - any fft analysis has much higher values in the lower freq bands than elsewhere. you're just drawing the bands with the biggest values off the screen. that bit you do see is in the distance where the perspective brings them into view.

  i always find it helps to use peasycam. it's takes 3 or 4 lines of code but allows you to drag the camera around the space so you can see what's happening

  // before setup
  import peasy.*;
  PeasyCam cam;
  
  // in setup
  cam = new PeasyCam(this, 2000);
  

  as for "// i can't set the y too" this is traditionally time. keep a buffer full of previous values of the fft calculations and draw the older versions in the background.
• koogs

  November 2016

  (you'll need to install the peasycam library if you don't already have it but it's very useful)
• chanof

  November 2016

  Hi, thanks for yours fast reply, peasycam is very useful, but I find a lot of difficult to work with arrays, I want to put inside x values of terrain variable from the spectrum fft result, and in y the time offset to move it, but it don't like my choice, could someone know how to deal with it? Thanks
• koogs

  November 2016 Answer ✓

  you need a 2d array to store old bands values. in fact you could just make spectrum a 2d array.