4dvectorfield.pde

import peasy.*;
PeasyCam cam;
float inc=0.1;
float linelen=200;
float scl=20;
float hue=0;
float toff=0;
int depth=600;
int cols,rows,dpt;
float a=PI;
PVector v;
void setup(){
  cam = new PeasyCam(this,height/2,width/2,depth/2,500);
  size(600,600,P3D);
  background(255);
  cols = floor(width/scl);
  rows = floor(height/scl);
  dpt = floor(depth/scl);
  }
void draw(){    
   //camera(1200,1200,1200,width/2, height/2, depth/2, 1.0, 1.0, 0.0);
   background(0);
   //colorMode(RGB);
   //strokeWeight(1);
   //stroke(255,0,0);
   //line(width/2,height/2,depth/2,3000,height/2,depth/2);
   //stroke(0,255,0);
   //line(width/2,height/2,depth/2,width/2,3000,depth/2);
   //stroke(0,0,255);
   //line(width/2,height/2,depth/2,width/2,height/2,3000);
  float zoff = 0;  
  for(int z = 0; z < dpt; z++){
    float yoff = 0;
    for(int y = 0; y < cols; y++){
      float xoff=0;
      for(int x = 0; x < rows; x++){
      float r = noise(xoff,yoff,zoff)*a;
      
      xoff += inc;  
      toff = frameCount/frameRate;
      v = new PVector(map(r*noise(toff,0,0),0,a,-100,100),map(r*noise(0,toff,0),0,a,-100,100),map(r*noise(0,0,toff),0,a,-100,100));
      hue = map(r*noise(toff),0,1,0,360);
      v.normalize();
      colorMode(HSB);
      stroke(hue,255,255,20);
      strokeWeight(3);

      pushMatrix();
      //rotate(r*map(noise(toff),0,1,-TWO_PI,TWO_PI),x,y,z);
      translate(x*scl,y*scl,z*scl);
     // rotateX(map(r*noise(toff/5,0,0),0,1,-TWO_PI,TWO_PI));
     // rotateY(map(r*noise(0,toff/5,0),0,1,-TWO_PI,TWO_PI));
     // rotateZ(map(r*noise(0,0,toff/5),0,1,-TWO_PI,TWO_PI));
     rotate(r*map(noise(toff/5),0,1,-TWO_PI,TWO_PI),x,y,z);
      line(0,0,0,-linelen*v.x,-linelen*v.y,-linelen*v.z);
     // line(0,0,0,100,100,100);
      popMatrix();     
      }
    yoff +=inc;
    }
   zoff += inc;
  }
  //saveFrame("vector-#####.jpg");
 }