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  Hi, I'm new to processing and I'm working with this code.. while I accomplished to fade the background I wonder how to change the stroke weight with the same data the background changes. Thanks in advance. This is my code:
  import processing.serial.*; import ddf.minim.*; import ddf.minim.signals.*; Minim minim; AudioPlayer mySound; Serial port; float brightness; void setup() { size(1000, 500,P3D); String portName = Serial.list()[2]; port = new Serial(this, "/dev/cu.usbmodem1421", 9600); port.bufferUntil('\n'); noFill(); strokeWeight(1); minim = new Minim(this); mySound = minim.loadFile("bb.mp3"); mySound.play(); mySound.loop(); } int n=0; void draw () { background (brightness, 0, 25); translate(width/2,height/2); for(int i = 0; i < mySound.bufferSize() - 1; i++) { stroke(random(250),random(250),random(250)); rotateX(n*-PI/6*0.05); rotateY(n*-PI/6*0.05); rotateZ(n*-PI/6*0.05); triangle (i,i,mySound.left.get(i)*50,mySound.left.get(i)*50,i,i); } n++; } void serialEvent (Serial port) { brightness = float (port.readStringUntil ('\n')); }
  Answers
  @realdapsis -- without testing your code, but just looking at it:
  Currently your brightness is a variable declared at the top:
  ...and you assign a value to it in your
  serialEvent()function:
  ...and you use that value in
  draw()to change the background of the screen:
  So. Currently in draw you set the stroke like this:
  Based on the example of how your brightness works: How could you change this code so that
  stroke()uses a variable -- and the variable is assigned during your serialEvent?