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flocking.pde
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flocking.pde
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/**
* Flocking0
* modified from Flocking by Daniel Shiffman. Craig Reynold's boids on rules of avoidance, alignment, and coherence.
*/
// class encapsulation
Loader loader;
// threading
void load_data() {
try {
loader.refresh();
}
catch (Exception e) {
//e.printStackTrace();
println(e);
}
}
PShape bird0;
int NORTH = -90; // north is UP by default
Flock flock;
int N = 85;
boolean draw_axes = false;
boolean draw_flow_dir = false;
int axis_len, flow_dir_stem_len, flow_dir_tick_len;
int tail = 94;
void setup() {
//fullScreen();
size(1400,900);
pixelDensity(2);
background(0);
axis_len = 100;
flow_dir_stem_len = min(width, height)/2;
flow_dir_tick_len = 15;
bird0 = loadShape("bird0-01.svg");
flock = new Flock();
loader = new Loader();
thread("load_data"); // load data for the first time
}
void draw() {
// draw axes
if(draw_axes) {
pushStyle();
noFill();
strokeWeight(5);
stroke(255, 0, 0);
line(0, 0, axis_len, 0);
stroke(0, 255, 0);
line(0, 0, 0, axis_len);
popStyle();
}
fill(0, 100-tail);
rect(0, 0, width, height); // make boids leave trail
flock.run();
if(millis() > loader.lastTime + loader.interval) {
thread("load_data");
}
}
void mousePressed() {
flock.addBoid(mouseX, mouseY);
}
void controlTail(int i) {
if(tail + i >= 0 && tail + i <= 100) {
tail += i;
println("[global] tail", tail);
}
}
String MODE = "speed";
void keyPressed() {
if(key == '[') {
if(MODE == "speed") {
flock.controlSpeed(-0.1);
}
else if(MODE == "size") {
flock.controlSize(-0.1);
}
else if(MODE == "neighbor") {
flock.controlNeighbor(-2);
}
else if(MODE == "tail") {
controlTail(-1);
}
}
else if(key == ']') {
if(MODE == "speed") {
flock.controlSpeed(+0.1);
}
else if(MODE == "size") {
flock.controlSize(+0.1);
}
else if(MODE == "neighbor") {
flock.controlNeighbor(+2);
}
else if(MODE == "tail") {
controlTail(+1);
}
}
else if(keyCode == 83) { // S
MODE = "speed";
println("[global] mode speed");
}
else if(keyCode == 90) { // Z
MODE = "size";
println("[global] mode size");
}
else if(keyCode == 78) { // N
MODE = "neighbor";
println("[global] mode neighbor");
}
else if(keyCode == 84) { // T
MODE = "tail";
println("[global] mode tail");
}
else if(keyCode == 66) { // B
flock.changeShape();
}
else if(keyCode == 68) { // D
draw_axes = !draw_axes;
draw_flow_dir = !draw_flow_dir;
}
}
/*
D: toggle debug mode
B: toggle boid shape
S: change boid speed
Z: change boid size
N: change neighbor parameter
T: change tail length
[: decrease it
]: increase it
*/