Need to create random fill by only one color

ddd

Hi I have this code where I create random rectangles every frame, I need that at least one random rect turns, one per color, red, yellow, blue & black (the ideal would be to limit them from at least 1 to max. 3). The rest should be white.

void setup() { size (600, 600); strokeWeight (10); strokeCap (SQUARE); rectMode(CORNERS); frameRate(1); } float x; float larg; float alt; float y; int i; int j; int o=20; //no. of vertical rects int v=30; //no. of horizontal rects

void draw () {

background(255); alt=0; stroke(20);

for (i=0; i<=5; i++) {

y=random(alt, height);
larg=0;

if (i==o)
  y=600;

for (j=1; j<=v; j++) {
  x=random(larg, width);

  if (j==v)
    x=600;

  rect(larg, alt, x, y);
  larg=x;
}

alt=y;

} }

Chrisir

here

void setup() { 
  size (600, 600); 
  strokeWeight (10); 
  strokeCap (SQUARE); 
  rectMode(CORNERS); 
  frameRate(1);
} 
float x; 
float larg; 
float alt; 
float y; 
int i; 
int j;

int o=20; //no. of vertical rects 
int v=30; //no. of horizontal rects

void draw () {

  background(255); 
  alt=0; 
  stroke(20);

  for (i=0; i<=5; i++) {

    y=random(alt, height);
    larg=0;

    if (i==o)
      y=600;

    for (j=1; j<=v; j++) {
      x=random(larg, width);

      if (j==v)
        x=600;

      fill(255);

      if (random(100)>90) 
        fill(255, 2, 2);
      else if (random(100)>90) 
        fill(0, 245, 2);
      else if (random(100)>90) 
        fill(0, 2, 255);

      rect(larg, alt, x, y);
      larg=x;
    }

    alt=y;
  }
}

ddd

Man, awesome, thanks a lot! Can I control the number of rects to be filled?

Chrisir

at the moment it's random

but you just can increase a counter every time you use a color and only invoke the color lines in the code when counter < 5 or so

if (counter<5) {
    ///...................
}