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int
n = 5000;
// number of cells
float bd = 37; // base line length |
float sp = 0.004; // rotation speed step |
float sl = .97; // slow down rate |
Cell[] all = new Cell[n]; |
class Cell{ |
int x, y; |
float s = 0; // spin velocity |
float c = 0; // current angle |
Cell(int x, int y) { |
this.x=x; |
this.y=y; |
} |
void sense() { |
if(pmouseX != 0 || pmouseY != 0) |
s += sp * det(x, y, pmouseX, pmouseY, mouseX, mouseY) / (dist(x, y, mouseX, mouseY) + 1); |
s *= sl; |
c += s; |
float d = bd * s + .001; |
line(x, y, x + d * cos(c), y + d * sin(c)); |
} |
} |
void setup(){ |
size(300, 300, P2D); |
stroke(0, 0, 0, 20); |
for(int i = 0; i < n; i++){ |
float a = i + random(0, PI / 9); |
float r = ((i / (float) n) * (width / 2) * (((n-i) / (float) n) * 3.3)) + random(-3,3) + 3; |
all[i] = new Cell(int(r*cos(a)) + (width/2), int(r*sin(a)) + (height/2)); |
} |
} |
void draw() { |
background(255); |
for(int i = 0; i < n; i++) |
all[i].sense(); |
} |
void mousePressed() { |
for(int i=0;i<n;i++) |
all[i].c = 0; |
} |
float det(int x1, int y1, int x2, int y2, int x3, int y3) { |
return (float) ((x2-x1)*(y3-y1) - (x3-x1)*(y2-y1)); |
}
Thank you!
Thank you so much!!