Hello,

I'm working on the code below for a college project. I need to set it up as following but have no idea where to start. The original sketch was not developed by me and can be viewed here: http://www.openprocessing.org/sketch/58970

Basically what I am trying to do is position the dust particles in the center of the stage and remove all mouse interaction.

I am using an Epoc headset with Mind My OSCs to import five readings. What I am hoping to do is use one of the readings (most likely excitement) to control the entire sketch.

Rather than using a mouse click function, I want the sketch to run constantly.

int longness = 10000; This line controls the amount of lines/particles on the canvas and I was wondering if it would be possible to increase and decrease this value based on the headset reading (excitement level).

I have spent days at this and have gotten nowhere. I would appreciate any help you can give me.

Thanks,

Keelan





import oscP5.*;
import netP5.*;


public float engBor = 0; // Engaged/Bored
public float exc = 0; // Excitement
public float excLon = 0; // Excitement Long Term
public float med = 0; // Meditation
public float fru = 0; // Frustration

OscP5 oscP5;

int longness = 10000;
spring[] springs = new spring[longness];

void setup() {
  background(0, 0, 0);
  size(500, 500, P2D);
  colorMode(HSB);
  for (int i = 0; i < longness; i++) {
    springs[i] = new spring(random(width), random(height), i);
   
  oscP5 = new OscP5(this, 7400);
    // plug the OSC messages for the Affectiv values
  oscP5.plug(this,"updateEngBor","/AFF/Engaged/Bored");
  oscP5.plug(this,"updateExc","/AFF/Excitement");
  oscP5.plug(this,"updateExcLon","/AFF/Excitement Long Term");
  oscP5.plug(this,"updateMed","/AFF/Meditation");
  oscP5.plug(this,"updateFru","/AFF/Frustration");
}
}

void draw() {
  if(!keyPressed&&key!='p') {
    fill(0, 0, 0, 40);
    strokeWeight(10);
    rect(0, 0, width, height);
  }

  if (keyPressed&&key=='p') {//possible cog function to take snapshot
    saveFrame("output.png");
  }
 
 for (int i = 0; i < longness; i++) {
    springs[i] = new spring(random(width), random(height), i);
  }

  for (int i = 0; i < longness ; i++) {
    springs[i].render();
  }
}


class spring {

  float Xpos;
  float Ypos;
  float Xvel;
  float Yvel;
  float Pxpos;
  float Pypos;
  float colorness;

  spring(float tempXpos, float tempYpos, int colortemp) {

    Xpos = tempXpos;
    Ypos = tempYpos;
    colorness = colortemp;
   
  }

 void render() {
    Xpos += Xvel;
    Ypos += Yvel;
    if (mousePressed) {
      Xvel += (4000 / dist(mouseX, mouseY, Xpos, Ypos) * ((0.009 * (mouseX - Xpos))) / 50);
      Yvel += (4000 / dist(mouseX, mouseY, Xpos, Ypos) * ((0.009 * (mouseY - Ypos))) / 50);
    } else {
    Xvel = Xvel / 1.04;
    Yvel = Yvel / 1.04;
    }
    colorness = dist(Xpos, Ypos, Pxpos, Pypos) * 10;
    strokeWeight(2);
    fill(colorness, 255, 255);
    stroke(colorness, 255, 255, 20);
    line(Xpos, Ypos, Pxpos, Pypos);
    Pxpos = Xpos;
    Pypos = Ypos;
  }
}