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flowers.js
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flowers.js
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var e = 5;
var f = 5;
var g = 5;
var h = 5;
var resolution = 150;
var t = 0;
var p = 0;
document.onload = function initialize() {
var localci = new Array();
var ci = 0;
var buf = [];
for (var i = 0; i < resolution-1; i++) {
for (var j = 0; j < resolution-1; j++) {
localci[ci] = i*resolution+j;
localci[ci+1] = i*resolution+j+1;
localci[ci+2] = (i+1)*resolution+j+1;
localci[ci+3] = (i+1)*resolution+j;
localci[ci+4] = -1;
buf.push(localci[ci]);
buf.push(localci[ci+1]);
buf.push(localci[ci+3]);
buf.push(localci[ci+4]);
buf.push(localci[ci+1]);
buf.push(localci[ci+2]);
buf.push(localci[ci+3]);
buf.push(localci[ci+4]);
ci += 5;
}
}
updateCoordinates(resolution);
var ifs = document.getElementById("ifs");
var localci = new x3dom.fields.MFInt32(buf);
ifs.setAttribute("coordIndex", localci);
setInterval(animate, 1);
}
function updateCoordinates(resolution) {
theta = 0.0;
phi = 0.0;
delta = (2 * 3.141592653) / (resolution-1);
var buf = [];
for ( i = 0; i < resolution; i++) {
for ( j = 0; j < resolution; j++) {
rho = e + f * Math.cos(g * theta + t) * Math.cos(h * phi + p);
var coord = new x3dom.fields.SFVec3f(
rho * Math.cos(phi) * Math.cos(theta),
rho * Math.cos(phi) * Math.sin(theta),
rho * Math.sin(phi)
);
buf.push(coord);
theta += delta;
}
phi += delta;
}
var crd = document.getElementById("crd");
var coordinates = new x3dom.fields.MFVec3f(buf);
crd.setAttribute("point", coordinates);
}
function animate() {
choice = Math.floor(Math.random() * 4);
switch (choice) {
case 0:
e += Math.floor(Math.random() * 2) * 2 - 1;
break;
case 1:
f += Math.floor(Math.random() * 2) * 2 - 1;
break;
case 2:
g += Math.floor(Math.random() * 2) * 2 - 1;
break;
case 3:
h += Math.floor(Math.random() * 2) * 2 - 1;
break;
}
t += 0.5;
p += 0.5;
if (f < 1) {
f = 10;
}
if (g < 1) {
g = 4;
}
if (h < 1) {
h = 4;
}
updateCoordinates(resolution);
}