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@Bleuje
Created August 15, 2017 22:28
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class Center{
float x = random(width);
float y = random(height);
float rot = random(-10,10);
float repulse = random(-4,2);
void show(){
stroke(255,0,0);
strokeWeight(3);
point(x,y);
}
}
float DT = 0.1;
class Particle{
float x = random(width);
float y = random(height);
float sz = random(1,2);
void update(){
PVector res = field(x,y);
x += DT*res.x;
y += DT*res.y;
}
void show(){
stroke(255);
strokeWeight(sz);
point(x,y);
}
}
int N = 100;
int NPart = 5000;
Center[] array = new Center[N];
Particle[] array2 = new Particle[NPart];
PVector field(float x,float y){
float amount = 7;
float sumx = 0;
float sumy = 0;
for(int i = 0;i<N;i++){
float distance = dist(x,y,array[i].x,array[i].y);
float intensity = constrain(map(distance,0,width,1,0),0,1);
intensity = pow(intensity,12);
float nx = (x - array[i].x)/distance;
float ny = (y - array[i].y)/distance;
sumx += (array[i].rot*ny + array[i].repulse*nx)*intensity*amount;
sumy += (-array[i].rot*nx + array[i].repulse*ny)*intensity*amount;
}
return new PVector(sumx,sumy);
}
void setup(){
size(500,500);
for(int i=0;i<N;i++){
array[i] = new Center();
}
for(int i=0;i<NPart;i++){
array2[i] = new Particle();
}
}
void draw(){
background(0);
for(int i=0;i<N;i++){
array[i].show();
}
for(int i=0;i<NPart;i++){
array2[i].update();
}
for(int i=0;i<NPart;i++){
array2[i].show();
}
for(int i=0;i<NPart;i++){
if(random(20)>19) array2[i] = new Particle();
}
/*
int ni = 35;
for(int i=0;i<ni;i++){
for(int j=0;j<ni;j++){
float x = map(i,0,ni-1,0,width);
float y = map(j,0,ni-1,0,height);
PVector res = field(x,y);
stroke(255);
strokeWeight(1);
line(x,y,x+res.x,y+res.y);
}
}*/
}
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