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Bright color gradation

[8 Replies]
- 01-Jul-2012 10:53 AM
- Forum: Programming Questions
Hy everyone I'm taking the first steps in Processing world, so my questions are very stupid :\

I'm trying to make a wallpaper just like this, and for now i have this code:
1. size(1280,600);
  background(0);
  
  int i=0;
  
  noStroke();
  smooth();
  
  for(i=0;i<=300;i++)
  {
  float r= random(2,40);
  float x= random(width);
  
  color rosso=color(255,0,0,random(0,200));
  color giallo=color(255,255,0,random(0,200));
  color verde=color(0,255,0,random(0,200));
  color blu=color(0,0,255,random(0,200));
  
  float rg=x*0.00205;
  float gv=x*0.00070;
  float vb=x*0.00050;
  
  color interA = lerpColor(rosso,giallo, rg);
  color interB = lerpColor(giallo,verde, gv);
  color interC = lerpColor(verde,blu, vb);
  
  //condizione colore
  if(x>0 && x<width/3){
  
  fill(interA);
  
  ellipse (x,random((height/2)-150,(height/2+150)),r,r);
  }
  
  else if(x>width/3 && x<width/1.5){
  
  fill(interB);
  ellipse (x,random((height/2)-150,(height/2+150)),r,r);
  }
  
  else if(x>width/1.5 && x<width){
  
  fill(interC);
  ellipse (x,random((height/2)-150,(height/2+150)),r,r);
  }
  
  }
i know it's not perfect :P i have two questions:

1. how can i make a better gradation between yellow-green-blu? Because i think it's really good between red and yellow, but don't look the same for the others colors;

2. how can i make light effect and super brightness color like in the wallpaper i posted? and a blur effect for opaque circles?

i'm using processing from a short time, so be more simple you can with answers, please :P

PS: sorry for my english ^^

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