natural system studioYap Haw Ping 575513

A set of dots move from side to side. The frequency of the oscillation increases from top to bottom. The effect is a series of unfolding structures including spirals and beats.

int howManyOscillators = 30;Oscillator[] osSet = new Oscillator[howManyOscillators];

int beginY = 0;int endY = 800;

float Ylocation = beginY;float Yincrement = (endY - beginY) / (howManyOscillators-1);

float beginFrequency = 1;float frequencyValue = beginFrequency;

float frequencyIncrement = 0.02;void setup() {

for (int i=0;i<howManyOscillators;i++) { osSet[i] = new Oscillator(Ylocation,frequencyValue);

Ylocation += Yincrement; frequencyValue += frequencyIncrement;

}

size(400,800); smooth();

frameRate(30);

//noLoop();}

void draw() { background(1);

for (int i = 0;i<howManyOscillators;i++) { osSet[i].update();

}}

class Oscillator { float angle = 0;

float angleIncrement = TWO_PI / 360; float centre, maximumDisplacement, frequency, verticalPosition;

int dotRadius; float xPosition;

Oscillator(float verticalPositionIn, float frequencyIn) { centre = 200;

maximumDisplacement = 150; frequency = frequencyIn;

dotRadius = 15; verticalPosition = verticalPositionIn;

}

void update() { xPosition = centre + maximumDisplacement * sin(angle * frequency);

fill(255,255,255); stroke(255,255,255);

ellipse(xPosition,verticalPosition,dotRadius,dotRadius); angle += angleIncrement;

if (angle == (TWO_PI - angleIncrement)) angle = 0; }}

Oscillation exercise

ArrayList agents;ArrayList attrPoints;ArrayList repPoints;

int agentsAmount=17000;

int attrAmount=7;int repAmount=7;

void setup(){

size(900,600,P2D); stroke(0);

agents=new ArrayList(); attrPoints=new ArrayList(); repPoints=new ArrayList();

for(int i=0;i<attrAmount;i++){

attrPoints.add(new PVector(round(random(10,width-10)),round(random(10,height-10))));//create attraction points

} for(int i=0;i<repAmount;i++){

repPoints.add(new PVector(round(random(10,width-10)),round(random(10,height-10))));//create repulsion points

}

for(int i=0;i<agentsAmount;i++){ agents.add(new Agent(round(random(10,width-10)),

round(random(10,height-10))));//create agents }}

void draw(){ background(70);

for(int i=0;i<agents.size();i++){ Agent a =(Agent)agents.get(i);

a.move(); a.display();

}

for(int i=0;i<attrPoints.size();i++){//display attraction points PVector aPt=(PVector)attrPoints.get(i);

fill(0,100,200); ellipse(aPt.x,aPt.y,10,10);

}

for(int i=0;i<repPoints.size();i++){//display repulsion points PVector rPt=(PVector)repPoints.get(i);

fill(200,0,100); ellipse(rPt.x,rPt.y,10,10);

} }

class Agent{ PVector pos, vel, followSum, escapeSum;

color c;

Agent(int _x, int _y){ pos=new PVector(_x,_y);

vel=new PVector(0,0); followSum=new PVector(0,0);

escapeSum=new PVector(0,0); c=color(random(255),random(255),random(255));

} void move(){

vel.add(follow()); vel.add(escape());

vel.limit(1); pos.add(vel);

}

void display(){ set((int)pos.x,(int)pos.y,c);

}

PVector follow(){///////////attraction force followSum.mult(0);

int count=0; for(int i=0; i<attrPoints.size();i++){

PVector aPt=(PVector)attrPoints.get(i); float d=pos.dist(aPt);

if (d<450){//attraction distance PVector dir = PVector.sub(aPt,pos);

dir.normalize(); dir.div(d);

followSum.add(dir); count++;

} }

if (count > 0) { followSum.div(count);

} return followSum;

} PVector escape(){///////////repulsion force

escapeSum.mult(0); int count=0;

for(int i=0; i<repPoints.size();i++){ PVector rPt=(PVector)repPoints.get(i);

float d=pos.dist(rPt); if (d<450){//repulsion distance

PVector dir = PVector.sub(rPt,pos); dir.normalize();

dir.div(d); escapeSum.sub(dir);

count++; } }

if (count > 0) { escapeSum.div(count);

} return escapeSum;

}}

Movement People + Attraction/Repulsion

Particle System - Bright Chaser

World world;ArrayList<Mover> pop = new ArrayList<Mover>();

//Mover global propertiesint numMovers = 5000;

int searchRad = 5;float maxSpeed =2;

a//world global properties

float fadeSpeed = 1;

void setup(){ size(800,800);

smooth();

world = new World( gradient.png );

//populate the sketch for (int i = 0; i<numMovers;i++){

Mover m = new Mover(new PVector(random(width),random(height)), new

PVector(random(-maxSpeed,maxSpeed),random(-maxSpeed,maxSpeed)), 1);

pop.add(m); }}

void draw(){ background(255);

world.drawImage(); world.fade(); //run the pop

for (Mover m:pop){ m.run();

}}

void keyPressed(){ if(key== s ){

saveFrame(hour()+minute()+second()+ .png ); } }

class World {

PImage loadedImage; // image to store float[][] vals;

int w,h;

World(String toImg){ loadedImage=loadImage(toImg); //load the source image

loadedImage.resize(width,height); loadedImage.loadPixels(); //load the pixel array

w = loadedImage.width; h = loadedImage.height;

vals = new float[w][h];

loadVals(); //loadBlank();

}

void loadVals(){ //fill up the brightness values array

for (int i = 0;i<w;i++){ for (int j = 0;j<h;j++){

vals[i][j]=brightness(loadedImage.pixels[(j*w)+i]); } } }

void loadBlank(){ for (int i = 0;i<w;i++){

for (int j = 0;j<h;j++){ vals[i][j]=0;

} //get a value from the image

float getAt(int x, int y){ return vals[x][y];

} //fade the image

void fade(){ for (int i = 0;i<w;i++){

for (int j = 0;j<h;j++){ if(vals[i][j]>fadeSpeed) vals[i][j]=vals[i][j]-fadeSpeed;

} } }

//write a new value to the image void setAt(int x, int y, float v){

v = constrain(v,0,255); vals[x][y]=v;

}

void modAt(int x, int y, float v){ float mod = constrain(vals[x][y]+v,0,255);

vals[x][y]=mod; }

void drawImage(){ loadPixels();

for (int i = 0;i<w;i++){ for (int j = 0;j<h;j++){

float b= constrain(vals[i][j],0,255); pixels[(j*w)+i] = color(b);

} }

updatePixels(); }}

Social Interaction between people in Queen Victoria Markethybridisation

int CheckpointNumber = 50; // Number of checkpointsint PersonNumber = 200; // Number of person(s)

float CheckpointX; // Distance among checkpoints (in X-axis)

ArrayList Checkpoint;ArrayList Person;

void setup(){ size(720, 480); background(255); smooth(); ellipseMode(RADIUS); Checkpoint = new ArrayList(); for(int i = 0; i < CheckpointNumber; i++) { CheckpointX += width/CheckpointNumber; // Make a checkpoint every [CheckpointX] pixels Checkpoint.add(new Checkpoint(CheckpointX, noise(CheckpointX) * height)); // Add checkpoints and randomize the height of the checkpoints } BuildPath(); // Build the paths for the person(s) Person = new ArrayList(); for(int i = 0; i < PersonNumber; i++) { Person.add(new Person()); } }

void draw(){ background(0); stroke(255, 0); DrawLines(); // Display the paths for(int i = 0; i < Person.size(); i++) { Person P = (Person) Person.get(i); P.Update(); P.Display(); } }

void keyPressed(){ if(key==’s’){ saveFrame(hour()+minute()+second()+ “.png”); } }

// Create paths between the checkpointsvoid BuildPath(){ boolean bIsInRange; for(int i = 0; i < CheckpointNumber; i++) { Checkpoint CP = (Checkpoint) Checkpoint.get(i); for(int j = 0; j < CheckpointNumber; j++) { Checkpoint OCP = (Checkpoint) Checkpoint.get(j); bIsInRange = dist(CP.X, CP.Y, OCP.X, OCP.Y) > 0 && dist(CP.X, CP.Y, OCP.X, OCP.Y) < 150; if(bIsInRange == true) // Make paths with checkpoints within range { CP.OpenCP[CP.OpenCPNumber] = j; CP.OpenCPNumber += 1; }void DrawLines(){ for(int i = 0; i < CheckpointNumber; i++) { Checkpoint CP = (Checkpoint) Checkpoint.get(i); for(int j = 0; j < CP.OpenCPNumber; j++) { Checkpoint OCP = (Checkpoint) Checkpoint.get(CP.OpenCP[j]); line(CP.X, CP.Y, OCP.X, OCP.Y); } }}