Tarea 9 atractor
De Casiopea
| Título | tarea 9 |
|---|---|
| Tipo de Proyecto | Proyecto de Curso |
| Palabras Clave | tarea 9 |
| Asignatura | Imagen Escrita 2012, |
| Del Curso | Imagen Escrita 2012, |
| Carreras | Diseño Gráfico"Diseño Gráfico" is not in the list (Arquitectura, Diseño, Magíster, Otra) of allowed values for the "Carreras Relacionadas" property., Diseño Industrial"Diseño Industrial" is not in the list (Arquitectura, Diseño, Magíster, Otra) of allowed values for the "Carreras Relacionadas" property. |
| Alumno(s) | Matías Adolfo Marín Araya |
| Profesor | Herbert Spencer |
Al experimentar con el atractor se llegó al efecto contrario que producía este en el ejemplo.
pestaña 1:
int MAX = 20;
Thing[] t = new Thing[MAX];
Attractor a;
boolean showVectors = true;
boolean velo = false;
void setup() {
size(1024, 768); smooth();
// Some random bodies
for (int i = 0; i < t.length; i++) {
PVector ac = new PVector(0.0, 0.0);
PVector ve = new PVector(random(-1, 1), random(-1, 1));
PVector lo = new PVector(random(width), random(height));
t[i] = new Thing(ac, ve, lo, random(2, 100));
}
// Create an attractive body
a = new Attractor(new PVector(width/2, height/2), 30, 1.4);
PFont font;
font = createFont("Monaco", 18);
textFont(font);
}
color cualquiera() {
color c = color(random(20), random(70), random(90)); return c;
}
void draw() {
if (!velo)background(#000000); // fondo blanco
a.rollover(mouseX, mouseY); // "escucha" al mouse para saber si hay rollover sobre el atractor
a.go(); // * atractor: sea!
for (int i = 0; i < t.length; i++) {
// Calculate a force exerted by "attractor" on "thing" PVector f = a.calcGravForce(t[i]); // Apply that force to the thing t[i].applyForce(f); // Update and render t[i].go(); }
if (keyPressed) {
if (key == 'a') {
a.G += 0.5;
}
if (key == 'z') {
a.G -= 0.5;
}
if (key == 's') {
a.mass += 10;
}
if (key == 'x') {
a.mass -= 10;
a.mass = constrain(a.mass, 0, 100);
}
}
fill(0);
text("G = "+a.G+",\t la masa del atractor = "+a.mass, 30, height-30);
if (velo) {
fill(255, 500);
noStroke();
rect(0, 0, width, height);
}
}
void mousePressed() {
a.clicked(mouseX, mouseY);
}
void mouseReleased() {
a.stopDragging();
}
void keyPressed() {
if (key == ' ') {
showVectors = !showVectors;
}
if (key == 'v') {
velo = !velo;
}
}
// Renders a vector object 'v' as an arrow and a location 'loc' void drawVector(PVector v, PVector loc, float scayl) {
strokeWeight(.75);
if (v.mag() > 0.0) {
pushMatrix();
float arrowsize = 10;
// Translate to location to render vector
translate(loc.x, loc.y);
stroke(255, 128, 0, 200);
// Call vector heading function to get direction (note that pointing up is a heading of 0) and rotate
rotate(v.heading2D());
// Calculate length of vector & scale it to be bigger or smaller if necessary
float len = v.mag()*scayl;
// Draw three lines to make an arrow (draw pointing up since we've rotate to the proper direction)
line(10, 10, len, 10);
line(len, 0, len-arrowsize, +arrowsize/1);
line(len, 0, len-arrowsize, -arrowsize/1);
popMatrix();
}
}
pestaña 2:
class Attractor {
float mass; // Mass, tied to size float G; // Gravitational Constant PVector loc; // Location boolean dragging = false; // Is the object being dragged? boolean rollover = false; // Is the mouse over the ellipse? PVector drag; // holds the offset for when object is clicked on
Attractor(PVector l_,float m_, float g_) {
loc = l_.get();
mass = m_;
G = g_;
drag = new PVector(0.0,0.0);
}
void go() {
render();
drag();
}
PVector calcGravForce(Thing t) {
PVector dir = PVector.sub(loc,t.getLoc()); // Calculate direction of force
float d = dir.mag(); // Distance between objects
d = constrain(d, 1.0, 250.0); // Limiting the distance to eliminate "extreme" results for very close or very far objects
dir.normalize(); // Normalize vector (distance doesn't matter here, we just want this vector for direction)
float force = (G * mass * t.getMass()) / (d * d); // Calculate gravitional force magnitude
dir.mult(force); // Get force vector --> magnitude * direction
return dir;
}
// Method to display
void render() {
strokeWeight(mass / 50);
stroke(0, 100);
ellipseMode(CENTER);
if (dragging) fill (50);
else if (rollover) fill(100);
else fill(175,200);
ellipse(loc.y,loc.x,mass*2,mass*2);
noStroke();
}
// The methods below are for mouse interaction
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;
}
}
}
pestaña 3:
class Thing {
PVector loc; // location
PVector vel; // velocity
PVector acc; // acceleration
float mass;
float max_vel;
color col;
Thing(PVector a, PVector v, PVector l, float m_) {
acc = a.get();
vel = v.get();
loc = l.get();
mass = m_;
max_vel = 100.0;
col = color(random(180, 255), random(100, 175), random(30), 200);
}
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, 100);
}
}
// Main method to operate object
void go() {
update();
render();
}
// Method to update location
void update() {
vel.add(acc);
vel.limit(max_vel);
loc.add(vel);
// Multiplying by 0 sets the all the components to 0
acc.mult(0);
}
// Method to display
void render() {
ellipseMode(CENTER);
fill(col);
ellipse(loc.x,loc.y,mass,mass);
if (showVectors) {
drawVector(vel,loc,20);
}
}
}
