# Another Lambda Example In Processing 4

``````int version = 0; //if we grab multiple frames, they will be numbered
float timeSeed = 0.1; //seed for the third dimension of the noise
float NOISE_STRENGTH = 80.0; //strength of the noise effect

import processing.pdf.*;

boolean saveOneFrame = false;
NoiseGenerator generator;

void setup() {
size(1000, 1000); //resolution does not really matter since we are working with vectors
frameRate(24);
generator = (x, y, seed) -> NOISE_STRENGTH * noise(
x / 150.0,
y / 150.0 + seed * 2,
seed
) - 100;
}

void draw() {
if (saveOneFrame == true) { //turn on recording for this frame if we clicked the mouse
beginRecord(PDF, "Line_"+version+".pdf");
}

background(255);
noFill();
stroke(0);
strokeWeight(1);
timeSeed = millis()/5000.0;
for (int cy = 0; cy < height+100; cy+=50) { //iterate down the page
for (int cx = 0; cx < width+100; cx+=50) { //iterate across the page
beginShape();
float div = 2.0*PI/10.0; //divide 2PI into 1/10ths
for (float a = 0; a<=2.0*PI; a+=div) { //work around the circle
float x = (cos(a)*60) + cx; //convert polar to cartesian
float y = (sin(a)*60) + cy;
x += generator.noise(x, y, millis()/5000); //add noise to each point
y += generator.noise(x, y, millis()/5000);
vertex(x, y); //add the point to the shape
}
endShape(CLOSE);
}
}
if (saveOneFrame == true) {
endRecord();
version++;
saveOneFrame = false;
}
}

void mousePressed() {
saveOneFrame = true;
}
``````

Interface

``````interface NoiseGenerator{
float noise(float x, float y, float timeSeed);
}
``````

4 Likes