Cant get sequence of images to save

Processing Coding Questions
1

Hello, so I picked this code up off the net, its not mine but after doing some tweaks I was trying to get it to save images so I could upload into after effects, can you please tell me where I need to put my if statement for when I am recording, I have tried many places to no aval. thank you in advance!!!

ParticleSystem ps;
FlowField ff;

float t = 0;
boolean pause = false;
boolean recording = false;

color black = color(0, 0, 0);
color black2 = color(0, 0, 0);



void setup()
{
  fullScreen();
  //size(720, 480);
  
  bg(black, black2);  
  
  ff = new FlowField();
   
  ps = new ParticleSystem();
  ps.addParticles();  
}



void draw()

{ 
  ff.init(t);
  ps.run(ff);
  t += 0.0003;
}

void mousePressed()
{
  noiseSeed((int)random(10000));
  ps.restart();
  bg(black, black2);
  pause = false;
}


void keyPressed()
{
  if (key == 'p' || key == 'P') pause = !pause;
  if (pause) {  noLoop();  }
  else {  loop();  }
  
  if (key == 's' || key == 'S')  saveFrame("output_1/smoke-###.png");
  
  if (key == 'r' || key == 'R') recording = !recording; 
  if (recording) { loop();
  saveFrame("Recording_1/Particle_Perlin-###.png");
  }
  else { noLoop(); }
}

void bg(color c1, color c2)
{
  for (int i = 0; i < height; i++)
  {
    float j = map(i, 0, height, 0, 1);
    stroke(lerpColor(c1,c2,j*300));
    line(0, i, width, i);
  }
}
class FlowField
{
  PVector[][] field;
  int cols, rows;
  int resolution;
  
  FlowField()
  {
    resolution = 10;
    cols = width/resolution;
    rows = height/resolution;
    field = new PVector[cols][rows];
  }
  
  void init(float t)
  {
    float xoff = 0;
    for (int i = 0; i < cols; i++)
    {
      float yoff = 0;
      for (int j = 0; j < rows; j++)
      {
        float theta = noise(xoff, yoff, t);
        theta = map(theta, 0, 1, 0, TWO_PI);
        
        field[i][j] = new PVector(cos(theta), sin(theta));
        
        yoff += 0.07;
      }
      xoff += 0.07;
    }
  }

  
  PVector lookup(PVector lookup)
  {
    int column = int(lookup.x / resolution);
    column = constrain(column, 0, cols - 1);
    
    int row = int(lookup.y / resolution);
    row = constrain(row, 0, rows - 1);
    
    return field[column][row].get();
  }
  
  
}
class Particle
{
  PVector location;
  PVector velocity;
  PVector acceleration;
  float maxSpeed;
  float maxForce;
  
  
  Particle(PVector l)
  {
    location = l.get();
    velocity = new PVector(0, 0);
    acceleration = new PVector(0, 0);
    maxSpeed = 100;
    maxForce = 0.15;
  }
    
    
  void bounderies()
  {
    if (location.x < 0)  {  location.x = width;  }
    else if (location.x > width)  {  location.x = 0;  }
    
    if (location.y < 0)  {  location.y = height;  }
    else if (location.y > height)  {  location.y = 0;  }    
  }
  
  
  void follow(FlowField flow)
  {
    PVector desired = flow.lookup(location);
    desired.limit(maxSpeed);
    
    PVector steer = PVector.sub(desired, velocity);
    steer.limit(maxForce);
    applyForce(steer);
  }
  
  
  void applyForce(PVector force)
  {
    acceleration.add(force);
  }
  
  
  void update()
  {
    velocity.add(acceleration);
    velocity.limit(maxSpeed);
    location.add(velocity);
    acceleration.mult(0);
  }
  
  
  void display()
  {
    stroke(chooseColor(), 10);
    point(location.x, location.y);
  
  }
  
  
  color chooseColor()
  {
    color c;
    color orange = color(255, 246, 237);
    color white = color(255, 255, 255);
    color blue = color(163, 229, 253);
    
    int choice = frameCount % 400;
    int amt = (frameCount % 100) / 100;
    
    if (choice < 100)  {  c = lerpColor(orange, white, amt);  }
    else if (choice < 200)  {  c = lerpColor(white, blue, amt);  }
    else if (choice < 300)  {  c = lerpColor(blue, white, amt);  }
    else  {  c = lerpColor(white, orange, amt);  }
    
    return c;
  }
}
class ParticleSystem
{
  ArrayList <Particle> particles;
  
  
  ParticleSystem()
  {
    particles = new ArrayList <Particle> ();
  }
  
  
  void addParticles()
  {
    for (int i = 0; i < 10000; i++)
    {
      PVector l = new PVector(random(width), random(height));
      particles.add(new Particle(l));
    }
  }
  
  
  void restart()
  {
    for (int i = 99; i >= 0; i--)  {  particles.remove(i);  }
    addParticles();
  }
  
  
  void run(FlowField flow)
  {
    for (Particle p : particles)
    {
      p.follow(flow);
      p.bounderies();       
      p.update();
      p.display();
    }
  }

}
2

You should had saveFrame at the end of your draw function

void draw(){
  ff.init(t);
  ps.run(ff);
  t += 0.0003;
  if (recording) saveFrame("Recording_1/Particle_Perlin-###.png");
  }
4

I tried that location and I was still getting errors there and it was saying that the void mousePressed() was wrong.

5

Hey @matheplica I have two accounts sorry, Run this code and tell me what you get, it will slow down (usual for my computer when saving and rendering) but then it will only save a frame then continue (ONLY) rendering. so sorry for my explanation but it seems like my save function is outside the draw loop somehow… when placed after, anyways run this lmk please… thanks in advance

ParticleSystem ps;
FlowField ff;

float t = 0;
boolean pause = false;
boolean recording = false;

color black = color(0, 0, 0);
color black2 = color(0, 0, 0);



void setup()
{
  fullScreen();
  //size(720, 480);
  
  bg(black, black2);  
  
  ff = new FlowField();
   
  ps = new ParticleSystem();
  ps.addParticles();  
}



void draw()

{ 
  ff.init(t);
  ps.run(ff);
  t += 0.0003;
  if (recording) saveFrame("Recording_1/Particle_Perlin-########.png");
}

void mousePressed()
{
  noiseSeed((int)random(10000));
  ps.restart();
  bg(black, black2);
  pause = false;
}


void keyPressed()
{
  if (key == 'p' || key == 'P') pause = !pause;
  if (pause) {  noLoop();  }
  else {  loop();  }
  
  if (key == 's' || key == 'S')  saveFrame("output_1/smoke-###.png");
  
  if (key == 'r' || key == 'R') recording = !recording; 
  
}

void bg(color c1, color c2)
{
  for (int i = 0; i < height; i++)
  {
    float j = map(i, 0, height, 0, 1);
    stroke(lerpColor(c1,c2,j*300));
    line(0, i, width, i);
  }
}
class FlowField
{
  PVector[][] field;
  int cols, rows;
  int resolution;
  
  FlowField()
  {
    resolution = 10;
    cols = width/resolution;
    rows = height/resolution;
    field = new PVector[cols][rows];
  }
  
  void init(float t)
  {
    float xoff = 0;
    for (int i = 0; i < cols; i++)
    {
      float yoff = 0;
      for (int j = 0; j < rows; j++)
      {
        float theta = noise(xoff, yoff, t);
        theta = map(theta, 0, 1, 0, TWO_PI);
        
        field[i][j] = new PVector(cos(theta), sin(theta));
        
        yoff += 0.07;
      }
      xoff += 0.07;
    }
  }

  
  PVector lookup(PVector lookup)
  {
    int column = int(lookup.x / resolution);
    column = constrain(column, 0, cols - 1);
    
    int row = int(lookup.y / resolution);
    row = constrain(row, 0, rows - 1);
    
    return field[column][row].get();
  }
  
  
}
class Particle
{
  PVector location;
  PVector velocity;
  PVector acceleration;
  float maxSpeed;
  float maxForce;
  
  
  Particle(PVector l)
  {
    location = l.get();
    velocity = new PVector(0, 0);
    acceleration = new PVector(0, 0);
    maxSpeed = 100;
    maxForce = 0.15;
  }
    
    
  void bounderies()
  {
    if (location.x < 0)  {  location.x = width;  }
    else if (location.x > width)  {  location.x = 0;  }
    
    if (location.y < 0)  {  location.y = height;  }
    else if (location.y > height)  {  location.y = 0;  }    
  }
  
  
  void follow(FlowField flow)
  {
    PVector desired = flow.lookup(location);
    desired.limit(maxSpeed);
    
    PVector steer = PVector.sub(desired, velocity);
    steer.limit(maxForce);
    applyForce(steer);
  }
  
  
  void applyForce(PVector force)
  {
    acceleration.add(force);
  }
  
  
  void update()
  {
    velocity.add(acceleration);
    velocity.limit(maxSpeed);
    location.add(velocity);
    acceleration.mult(0);
  }
  
  
  void display()
  {
    stroke(chooseColor(), 10);
    point(location.x, location.y);
  
  }
  
  
  color chooseColor()
  {
    color c;
    color orange = color(255, 246, 237);
    color white = color(255, 255, 255);
    color blue = color(163, 229, 253);
    
    int choice = frameCount % 400;
    int amt = (frameCount % 100) / 100;
    
    if (choice < 100)  {  c = lerpColor(orange, white, amt);  }
    else if (choice < 200)  {  c = lerpColor(white, blue, amt);  }
    else if (choice < 300)  {  c = lerpColor(blue, white, amt);  }
    else  {  c = lerpColor(white, orange, amt);  }
    
    return c;
  }
}
class ParticleSystem
{
  ArrayList <Particle> particles;
  
  
  ParticleSystem()
  {
    particles = new ArrayList <Particle> ();
  }
  
  
  void addParticles()
  {
    for (int i = 0; i < 10000; i++)
    {
      PVector l = new PVector(random(width), random(height));
      particles.add(new Particle(l));
    }
  }
  
  
  void restart()
  {
    for (int i = 99; i >= 0; i--)  {  particles.remove(i);  }
    addParticles();
  }
  
  
  void run(FlowField flow)
  {
    for (Particle p : particles)
    {
      p.follow(flow);
      p.bounderies();       
      p.update();
      p.display();
    }
  }

}
6

It’s also boundaries

7

Can I get a little bit of an explanation pertaining to my code, and I will try to get this worked out Im doing visuals for a halloween party and really want to get this recorded so I can do some mograph effects, thank you

8

Hey @Chrisir could I get a little more of an explanation in my code i found the function for boundaries, should i tweak that section to accept the saving of files. I’m probably making no sense, my thought process is vague still.

9

I think I was just making a lame remark about a typo

Apologies