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Random Points (Read 355 times)
pentagrammatron
Random Points
Jan 20th, 2009, 6:42pm  
Hi,
this is my second day with processing.
Sorry for this question but i don't understand the random value for change position of my points.


With this:







size (700, 700);
background (255);




smooth();
strokeWeight(10);  

for (int i = 0; i <= 700; i = i+10) {

 
 for (int j = 0; j <= 700; j = j+10) {
   
   
   
   
   
   
   point(i, j);
   
   
 


}



}



I generate points with 10px of distance but...for generate random points?


Thanks.
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Digital_Babu
Re: Random Points
Reply #1 - Jan 20th, 2009, 6:57pm  
If I understand you correctly, you want to create random points?

Check out the random() function.

http://processing.org/reference/random_.html
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pentagrammatron
Re: Random Points
Reply #2 - Jan 20th, 2009, 7:06pm  
it's ok with this code or not?








size (700, 700);
background (255);




smooth();


strokeWeight(5);  





for (int i = 0; i <= 700; i = i+60) {

   float r = random(0,700);

   
 for (int j = 0; j <= 700; j = j+60) {
   
   float b = random(700);
   
   
   
   
   point(r, b);
   
   
 


}



}
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Digital_Babu
Re: Random Points
Reply #3 - Jan 20th, 2009, 8:25pm  
Could you describe what the end result should be like? End why is there so many white space between your lines of code?

Here is a simple commented example, I'm a beginner so I don't know whether it's optimal.

Quote:
int amount = 20; //amount of points to draw

void setup(){
  size(200,200);
  smooth();
}

void draw(){
  background(255);
  stroke(0);
  strokeWeight(5);
  
  for (int i = 0; i < amount; i++){ //as long as i is smaller than the amount to be drawn
    float xpos = random(0, width); //random value between 0 and width
    float ypos = random(0, height);//idem. between 0 and height
    point(xpos,ypos); //draw point
  }
  noLoop();//run draw() just once
}
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pentagrammatron
Re: Random Points
Reply #4 - Jan 20th, 2009, 11:16pm  
Thanks thanks.

i modify your code and i work with Lines.
I move this and i'm really happy.

this is my fisrt day with processing.

Next step?Smiley
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