# \[Flash 8\] Interactive Voronoi Diagram Script..Help(from a flash new\_bee)

**URL:** <https://forum.kirupa.com/t/flash-8-interactive-voronoi-diagram-script-help-from-a-flash-new-bee/180930>\
**Category:** flash\
**Created:** [March 4, 2006, 6:50pm UTC](https://forum.kirupa.com/t/flash-8-interactive-voronoi-diagram-script-help-from-a-flash-new-bee/180930 "2006-03-04T18:50:50Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![kmokwete](https://avatars.discourse-cdn.com/v4/letter/k/e0b2c6/32.png) [@kmokwete](https://forum.kirupa.com/u/kmokwete)\
**Post date:** [March 4, 2006, 6:50pm UTC](https://forum.kirupa.com/t/flash-8-interactive-voronoi-diagram-script-help-from-a-flash-new-bee/180930/1 "2006-03-04T18:50:50Z")

</div>

Hi  
I working on the following script(which I got on the net) to generate interactive voronoi diagrams. At the moment additional points on the clip are done by clicking with the mouse, but I would like to amend the part which adds new dots (blue highlighted)so that I can:

**option 1** : type in the x and y location values of the dots instead

**option 2** (prefered): link this input of dots to a dynamically generated x and y values from Max/MSP tracking system.(through flashsever).

Pliz help!

killion

**script** :

MovieClip.prototype.drawLine = function(x1, y1, x2, y2) {  
this.moveTo(x1, y1);  
this.lineTo(x2, y2);  
};  
Movieclip.prototype.drawFillCircle = function(x, y, r, c) {  
var rx = r+x, ry = r+y, xr = x-r, yr = y-r;  
var r07 = r_0.7071, r04 = r_0.4142;  
this.moveTo(rx, y);  
this.beginFill©;  
this.curveTo(rx, r04+y, r07+x, r07+y);  
this.curveTo(r04+x, ry, x, ry);  
this.curveTo(x-r04, ry, x-r07, r07+y);  
this.curveTo(xr, r04+y, xr, y);  
this.curveTo(xr, y-r04, x-r07, y-r07);  
this.curveTo(x-r04, yr, x, yr);  
this.curveTo(r04+x, yr, r07+x, y-r07);  
this.curveTo(rx, y-r04, rx, y);  
this.endFill();  
};  
function init() {  
dots = [];  
PI = Math.PI;  
PI2 = 2_PI;  
maxSpeed = 5;  
dotNum = 0;  
distance = [];  
sx = [];  
sy = [];  
ex = [];  
ey = [];  
appW = Stage.width-1;  
appH = Stage.height-1;  
gOff = \_root.createEmptyMovieClip(“imageOff”, 0);  
initDots();  
\_root.onEnterFrame = run;  
\_root.onMouseUp = addDotAtMouse;  
}  
function addDotAtMouse() {  
addDot(\_xmouse, \_ymouse);  
}  
function run() {  
movedot();  
setVoronoi();  
gOff.clear();  
drawVoronoi(0x808080);  
}  
function initDots() {  
var i;  
for (i=0; i\<3; i++) {  
addDot(Math.random()appW, Math.random()appH);  
}  
}  
function addDot(x, y) {  
dots[dotNum] = new Object();  
dots[dotNum].x = x;  
dots[dotNum].y = y;  
dots[dotNum].angle = Math.random()PI2;  
dots[dotNum].v = Math.random()maxSpeed;  
dots[dotNum].m = \_root.createEmptyMovieClip(“dot” add dotNum, 10+dotNum);  
dots[dotNum].m.drawFillCircle(0, 0, 3, 0x000000);  
storage = dotNum+4;  
dotNum++;  
}  
function movedot() {  
var i, t;  
var a, s, x, y, cx, cy, vx, vy;  
for (i=0; i\<dotNum; i++) {  
x = dots.x;  
y = dots.y;  
a = dots.angle;  
s = dots.v;  
vx = Math.cos(a)s;  
vy = Math.sin(a)s;  
x += vx;  
y += vy;  
if (x\<3 || x\>=appW-3 || y\<3 || y\>=appH-3) {  
if (x\<3) {  
x = 3;  
vx = -1;  
}  
if (x\>appW-4) {  
x = appW-4;  
vx = -1;  
}  
if (y\<3) {  
y = 3;  
vy = -1;  
}  
if (y\>appH-4) {  
y = appH-4;  
vy = -1;  
}  
dots.angle = Math.atan2(vy, vx);  
}  
dots.m.\_x = dots.x=x;  
dots.m.\_y = dots.y=y;  
if (Math.random()\<.1) {  
dots.angle += Math.random()-.5;  
}  
if (Math.random()\<.1) {  
dots_.v += Math.random()-.5;  
dots\*.v = Math.max(0, Math.min(maxSpeed, Math.abs(dots\*.v)));  
}  
}  
}  
function setVoronoi() {  
var i, j, k, m, n;  
var a, b, a0, b0, a1, b1, x, y, x0, y0, x1, y1;  
for (i=0; i\<dotNum; i++) {  
x0 = dots\*.x;  
y0 = dots\*.y;  
n = i_storage+i+1;  
for (j=i+1; j\<dotNum; j++) {  
x1 = dots[j].x;  
y1 = dots[j].y;  
if (x1 == x0) {  
a = 0;  
} else if (y1 == y0) {  
a = 10000;  
} else {  
a = -1/((y1-y0)/(x1-x0));  
}  
b = (y0+y1)/2-a_(x0+x1)/2;  
if (a\>-1 && a\<=1) {  
sx[n] = 0;  
sy[n] = a_sx[n]+b;  
ex[n] = appW-1;  
ey[n] = a_ex[n]+b;  
} else {  
sy[n] = 0;  
sx[n] = (sy[n]-b)/a;  
ey[n] = appH-1;  
ex[n] = (ey[n]-b)/a;  
}  
n++;  
}  
sx[n] = 0;  
sy[n] = 0;  
ex[n] = appW;  
ey[n] = 0;  
n++;  
sx[n] = .1;  
sy[n] = 0;  
ex[n] = 0;  
ey[n] = appH;  
n++;  
sx[n] = appW;  
sy[n] = 0;  
ex[n] = appW-.1;  
ey[n] = appH;  
n++;  
sx[n] = 0;  
sy[n] = appH;  
ex[n] = appW;  
ey[n] = appH;  
}  
for (i=0; i\<dotNum; i++) {  
x0 = dots\*.x;  
y0 = dots\*.y;  
for (j=0; j\<dotNum+4; j++) {  
if (j != i) {  
if (j\>i) {  
n = i_storage+j;  
} else {  
n = j_storage+i;  
}  
if (sx[n]\>-Number.MAX\_VALUE) {  
a0 = (ey[n]-sy[n])/(ex[n]-sx[n]);  
b0 = sy[n]-a0_sx[n];  
for (k=i+1; k\<dotNum+4; k++) {  
if (k != j) {  
m = i_storage+k;  
if (sx[m]\>-Number.MAX\_VALUE) {  
a1 = (ey[m]-sy[m])/(ex[m]-sx[m]);  
b1 = sy[m]-a1_sx[m];  
x = -(b1-b0)/(a1-a0);  
y = a0_x+b0;  
if ((a0_x0+b0-y0)_(a0_sx[m]+b0-sy[m])\<0) {  
sx[m] = x;  
sy[m] = y;  
}  
if ((a0_x0+b0-y0)_(a0_ex[m]+b0-ey[m])\<0) {  
if (sx[m] == x) {  
sx[m] = -Number.MAX\_VALUE;  
} else {  
ex[m] = x;  
ey[m] = y;  
}  
}  
}  
}  
}  
}  
}  
}  
}  
}  
function drawVoronoi© {  
var i, j, n;  
gOff.lineStyle(0, c);  
for (i=0; i\<dotNum; i++) {  
n = i\*storage+i+1;  
for (j=i+1; j\<dotNum+4; j++) {  
if (sx[n]\>-Number.MAX\_VALUE) {  
gOff.drawLine(sx[n], sy[n], ex[n], ey[n]);  
}  
n++;  
}  
}  
}  
function angleDifference(t, s) {  
var a;  
a = t-s;  
if (a\>PI) {  
return (a-PI2);  
}  
if (a\<-PI) {  
return (a+PI2);  
}