Filippa Massa - Tarea 10 - 2012

Título	Filippa Massa - Tarea 10 - 2012
Tipo de Proyecto	Proyecto de Curso
Palabras Clave	tarea 10
Período	2012-
Asignatura	Imagen Escrita 2012,
Del Curso	Imagen Escrita 2012,
Carreras	Arquitectura
Alumno(s)	Filippa Massa
Profesor	Herbert Spencer

int MAX = 45; Objeto[] t = new Objeto[MAX]; Atractor a; boolean showVectors = false; boolean velo = false;

void setup() {

 size(800, 950);
 smooth();

 for (int i = 0; i < t.length; i++){
 PVector ac = new PVector(0.2, 0.5);
 PVector ve = new PVector(random(-2, 1), random(-1, 0.4));
 PVector lo = new PVector(random(width), random(height));
 t[i] = new Objeto(ac, ve, lo, random(5, 167));

}

a = new Atractor(new PVector(width/5, height/2.3), 30, 1.4);

PFont font; font = createFont("Arial", 12); textFont(font); }

color cualquiera() {

 color c = color(random(255), random(255), random(255));
 return c;

}

void draw() {

 if (!velo)background(255); 
 a.rollover(mouseX, mouseY); 
 a.go();

 for (int i = 0; i < t.length; i++) {

   PVector f = a.calcGravForce(t[i]);
   t[i].applyForce(f);
   t[i].go();
   
 }

 if (keyPressed) {
   if (key == 'p') {
     a.G -= 1;
   }
   if (key == 'o') {
     a.G *= 0.7;
   }
   if (key == 'u') {
     a.mass += 10;
   }
   if (key == 'y') {
     a.mass /= 2;
     a.mass = constrain(a.mass, 54, 13);
   }
   if (key == 't') {
     a.mass /= 10;
   }
   if (key == 'r') {
     a.mass -= 9;
   }
 }
 fill(0);
 text("G = "+a.G+",\t la masa del atractor = "+a.mass, 21, height-25);

 if (velo) {
   fill(255, 30);
   noStroke();
   rect(1, 4, width, height);
 }

}

void mousePressed() {

 a.clicked(mouseX, mouseY);

}

void mouseReleased() {

 a.stopDragging();

}

void keyPressed() {

 if (key == 's') {
   showVectors = !showVectors;
 }
 if (key == 'v') {
   velo = !velo;
 }

}

void drawVector(PVector v, PVector loc, float scayl) {

 strokeWeight(2);
 if (v.mag() > 0.0) {
   pushMatrix();
   float arrowsize = 24;
   translate(loc.x, loc.y);
   stroke(255, 198, 0, 139);
   rotate(v.heading2D());
   float len = v.mag()*scayl;
   line(0, 0, len, 0);
   line(len, 0, len-arrowsize, +arrowsize/2);
   line(len, 0, len-arrowsize, -arrowsize/0.7);
   popMatrix();
 }

}

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Atractor ************************************

class Atractor {

 float mass;    
 float G;   
 PVector loc;  
 boolean dragging = false; 
 boolean rollover = false; 
 PVector drag;  

 Atractor(PVector l_,float m_, float g_) {
   loc = l_.get();
   mass = m_;
   G = g_;
   drag = new PVector(0.2,0.5);
 }

 void go() {
   render();
   drag();
 }

 PVector calcGravForce(Objeto t) {
   PVector dir = PVector.sub(loc,t.getLoc());        
   float d = dir.mag();                             
   d = constrain(d, 1.0, 250.0);                     
   dir.normalize();                                  
   float force = (G * mass * t.getMass()) / (d * d); 
   dir.mult(force);                                  
   return dir;
 }

 void render() {
   strokeWeight(mass / 58);
   stroke(0, 139);
   ellipseMode(CENTER);
   if (dragging) fill (67);
   else if (rollover) fill(100);
   else fill(400,700);
   ellipse(loc.x,loc.y,mass*2,mass*2);
   noStroke();
 }

 void clicked(int mx, int my) {
   float d = dist(mx,my,loc.x,loc.y);
   if (d < mass) {
     dragging = true;
     drag.x = loc.x-mx;
     drag.y = loc.y-my;
   }
 }

 void rollover(int mx, int my) {
   float d = dist(mx,my,loc.x,loc.y);
   if (d < mass) {
     rollover = true;
   } else {
     rollover = false;
   }
 }

 void stopDragging() {
   dragging = false;
 }
 

 void drag() {
   if (dragging) {
     loc.x = mouseX + drag.x;
     loc.y = mouseY + drag.y;
   }
 }

}

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Objeto **************************************

class Objeto {

 PVector loc; 
 PVector vel;
 PVector acc;
 float mass;
 float max_vel;
 color col;
   
 Objeto(PVector a, PVector v, PVector l, float m_) {
   acc = a.get();
   vel = v.get();
   loc = l.get();
   mass = m_;
   max_vel = 20.0;
   col = color(random(5, 673), random(10, 300), random(0.5), 208);
 }
 
 PVector getLoc() {
   return loc;
 }

 PVector getVel() {
   return vel;
 }
 
 float getMass() {
   return mass;
 }

 void applyForce(PVector force) {
   force.div(mass);
   acc.add(force);
   if (showVectors) {
     drawVector(force,loc, 200);
   }    
 }

 void go() {
   update();
   render();
 }
 
 void update() {
   vel.add(acc);
   vel.limit(max_vel);
   loc.add(vel);
   acc.mult(0);
 }
 

 void render() {
   ellipseMode(CENTER);
   fill(col);
   ellipse(loc.x,loc.y,mass,mass);
   if (showVectors) {
     drawVector(vel,loc,32);
   }
 }

}