Codes

Background Attributes
size (250,250);
background(255);
smooth();


Lines Bursting Out

for (int a=0;a<=250;a=a+10) {
for (int b=0;b<=250;b=b+10) {

float r= random(1,250);
float d= random (1,3);
stroke(r*3,r*11523);
strokeWeight(d);
line(a,b,250,0);
}
}

Save the file in .png format
save( "rough_pattern_03.png");