Tarea nueve attractor

Título	tarea nueve, atractor
Tipo de Proyecto	Proyecto de Taller
Palabras Clave	tarea 9
Asignatura	Imagen Escrita 2012,
Del Curso	Imagen Escrita 2012,
Carreras	Arquitectura
Alumno(s)	Camilaherrera
Profesor	Herbert Spencer

/ / concepto: usar el efecto de la gravedad (planeta y satélite) al creat las aves que vuelan, los vectores entre atractor y las partículas forman las alas batientes / / / / mause a la izquierda, hacer clic para añadir partículas / / botón derecho del mause y arrastre atractores toadd / / Press teclado para cambiar la escena

ArrayList attractors = new ArrayList(); ArrayList particles = new ArrayList(); WorldData wd = new WorldData();

boolean addingAttractor = false; PVector initialPos;

void setup() {

 size(900, 600);
 noLoop();
 smooth();
 noStroke();
 frameRate(15);
 ellipseMode(RADIUS);
 //start position
 particles.add(new Particle(wd, new PVector(random(width)-50, random(height)-50)));
 particles.add(new Particle(wd, new PVector(random(width)-50, random(height)-50)));
 particles.add(new Particle(wd, new PVector(random(width)-50, random(height)-50)));
 attractors.add(new Attractor(new PVector(random(width)-50, random(height)-50), 45));
 attractors.add(new Attractor(new PVector(random(width)-50, random(height)-50), 45));
 attractors.add(new Attractor(new PVector(random(width)-100, random(height)-100), 45));

}

void draw() {

 background(90, 90, 150, 70);

 if (keyPressed==false) {
   strokeWeight(4);
   stroke(120, 160, 250, 30);
   int step = 13;
   float nlevel = 0.1;
   float lastx = -999;
   float lasty = -999;
   float ynoise = random(10);
   float y;
   for (int x=0; x<=900; x+=step) {
     y = 500 + noise(ynoise) * 80;
     if (lastx > -999) {
       line(x, y, lastx, lasty);
     }
     lastx = x;
     lasty = y;
     ynoise += nlevel;
   }
 }

 if (mousePressed) {
   if (mouseButton == LEFT)
     particles.add(new Particle(wd, new PVector(mouseX, mouseY)));

   if (addingAttractor) {
     fill(50, 50);
     float d = clamp(dist(initialPos.x, initialPos.y, mouseX, mouseY), 3);
     ellipse(initialPos.x, initialPos.y, d, d);

     if (mouseButton != RIGHT) {
       attractors.add(new Attractor(new PVector(initialPos.x, initialPos.y), d-2));
       addingAttractor = false;
     }
   }
 }
 else if (addingAttractor) {
   float d = clamp(dist(initialPos.x, initialPos.y, mouseX, mouseY), 3);
   attractors.add(new Attractor(new PVector(initialPos.x, initialPos.y), d-2));
   addingAttractor = false;
 }

 for (int i = 0; i < attractors.size(); i++) {
   Attractor a = (Attractor)attractors.get(i);
   a.draw();
 }

 for (int i = 0; i < particles.size(); i++) {
   Particle p = (Particle)particles.get(i);
   p.run(attractors);
 }

}

float clamp(float v, float min) {

return (v<min)?min:v;

}

void mousePressed() {

 if (mousePressed) {
   if (mouseButton == RIGHT)
     addingAttractor = true;
   initialPos = new PVector(mouseX, mouseY);
 }
 loop();

}

// set attractor

class Attractor {

 PVector position = new PVector(width/2, height/2);
 float strength = 1;

 public Attractor() {
 }

 public Attractor(PVector position, float strength) {
   this.position = position;
   this.strength = strength;
 }

 float getRadius() {
   return 2+strength;
 }

 void draw() {
   noStroke();
   fill(0, 100);
   float radius = getRadius();
   if (keyPressed==true) {
     ellipse(position.x, position.y, radius, radius);
     line(0, 9, 300, 400);
   }
 }

}

//set praticle

class Particle {

 PVector position = new PVector(width/2, height/2);
 PVector speed = new PVector(0, 0);
 PVector maxSpeed = new PVector(14, 14);
 float radius = 7;
 WorldData wd;

 public Particle(WorldData wd) {
   this.wd = wd;
 }

 public Particle(WorldData wd, PVector position) {
   this(wd);
   this.position = position;
 }


 void run(ArrayList attractors) {
   update(attractors);
   if (keyPressed == true ) {
     draw();
   }
 }
 void update(ArrayList attractors) {
   PVector[] components = new PVector[attractors.size()];

   PVector resultant = new PVector(0, 0);
   for (int i = 0; i < attractors.size(); i++) {
     Attractor a = (Attractor)attractors.get(i);
     float d = dist(a.position.x, a.position.y, position.x, position.y)+1;
     float force = 0;
     if (d < a.getRadius() + radius)
       force = wd.gravitationalConstant*d/a.strength;
     else
       force = wd.gravitationalConstant*a.strength/pow(d, 0.9);
     float angle = atan2(a.position.y - position.y, a.position.x - position.x);
     components[i] = new PVector(force*cos(angle), force*sin(angle));
     resultant.add(components[i]);
   }
   speed.add(resultant);

   if (speed.x > maxSpeed.x)
     speed.x = maxSpeed.x;
   if (speed.y > maxSpeed.y)
     speed.y = maxSpeed.y;

   position.add(speed);

   if (position.x < radius)
     speed.x = abs(speed.x);
   else if (position.x > width-radius)
     speed.x = -abs(speed.x);

   if (position.y < radius)
     speed.y = abs(speed.y);
   else if (position.y > height-radius)
     speed.y = -abs(speed.y);


   if (wd.showComps) {
     strokeWeight(2);
     stroke(110, 180, 220, 100);
     for (int i = 0; i < components.length; i++)

       if (keyPressed==false)
         line(position.x, position.y, position.x + 50*components[i].x, position.y + 50*components[i].y);
       
        
        
   }
 }

 void draw() {
   noStroke();
   fill(120, 20, 150, 200);
   ellipse(position.x, position.y, radius, radius);
 }

}

public class WorldData {

 public boolean showComps = true;
 public float gravitationalConstant = 1;

}