le code, ou ce qu'il en reste :
c = document.getElementById("c");
H = c.getContext("2d");
X = c.width / 2;
Y = c.height / 2;
ns = 8;
nt = 5;
SS = 24;
TT = 16;
o = document.getElementById("x");
R = '`TORUS`:-(`Ok, now this is a torus`:-/`Hidden lines`:-)`Flat shading`:-D`Gouraud shading!`:-o`Texture mapping!!`:-O`Environment mapping!!!`8-O`The end`;-)`js/canvas - 4086 bytes`no external data`by Andrea "6502" Griffini`'.split("`");
function c2(a) {
a >>= 0;
return a < 0 ? 0 : a > 255 ? 255 : a
}
rs = 6502;
function rr() {
rs = rs * 69069 + 1 & 65535;
return rs / 65535
}
function tx() {
mc = document.createElement("canvas");
mc.width = mc.height = 256;
ct = mc.getContext("2d");
id = ct.getImageData(0, 0, 256, 256);
I = id.data
}
function G(a, b, i) {
tx();
for (var f = 0; f < 256; f++) for (var d = 0; d < 256; d++) {
var e = (f - 128.5) / 127,
g = (d - 128.5) / 127,
h = 1 - g * g - e * e;
if (h > 0) {
var j = Math.sqrt(h),
k = -2 * j * g,
l = -2 * j * e,
m = -h,
n = Math.sqrt(k * k + l * l + m * m);
k /= n;
l /= n;
m /= n;
n = -m * 0.57735 + l * 0.57735 + k * 0.57735;
n = n < 0 ? 0 : Math.exp(Math.log(n) * 280) * 3;
if (l < 0) {
n = 16 / (0.1 - l);
n = !(k * n + 1000.5 & 7) | !(m * n + 1000.5 & 7) ? l * l * h : 0
}
e = (-e * 0.707 - g * 0.707 + j * 0.707) / 1.5;
e = e < 0 ? 0 : e * e;
h = n + e + h / 5 + 0.25;
e = (f * 256 + d) * 4;
I[e] = c2(a * h);
I[e + 1] = c2(b * h);
I[e + 2] = c2(i * h);
I[e + 3] = 255
}
}
ct.putImageData(id, 0, 0);
return mc
}
function E() {
for (var a = [128], b = 256, i = 256; b > 1;) {
for (var f = b >> 1, d = 0; d < 256; d += b) for (var e = d + b & 255, g = 0; g < 256; g += b) {
var h = g + b & 255,
j = a[d * 256 + g],
k = a[d * 256 + h],
l = a[e * 256 + g];
h = a[e * 256 + h];
a[d * 256 + (g + f)] = c2((j + k) / 2 + (rr() - 0.5) * i);
a[(d + f) * 256 + g] = c2((j + l) / 2 + (rr() - 0.5) * i);
a[(d + f) * 256 + (g + f)] = c2((j + k + l + h) / 4 + (rr() - 0.5) * i * 1.4142)
}
b = f;
i *= 0.6
}
tx();
b = rr() * 65535;
f = rr() * 65535;
for (d = 0; d < 256; d++) for (e = 0; e < 256; e++) {
g = (d * 256 + e) * 4;
i = d * 256 + e;
I[g] = a[i];
I[g + 1] = a[i + b & 65535];
I[g + 2] = a[i + f & 65535];
I[g + 3] = 255
}
ct.putImageData(id, 0, 0);
return mc
}
function mT(a, b, i, f) {
x = [];
y = [];
z = [];
u = [];
v = [];
nx = [];
ny = [];
nz = [];
for (var d = 0; d <= i; d++) for (var e = 2 * Math.PI * d / i, g = a * Math.cos(e), h = a * Math.sin(e), j = 0; j <= f; j++) {
var k = 2 * Math.PI * j / f,
l = b * Math.cos(k),
m = b * Math.sin(k);
x.push(g + m * Math.cos(e));
y.push(0 + l);
z.push(h + m * Math.sin(e));
u.push(d * 254 / i + 1);
v.push(j * 254 / f + 1);
nx.push(Math.sin(k) * Math.cos(e));
ny.push(Math.cos(k));
nz.push(Math.sin(k) * Math.sin(e))
}
Q = [];
for (d = 0; d < i; d++) {
a = d + 1;
for (j = 0; j < f; j++) {
b = j + 1;
Q.push([d * (f + 1) + j, d * (f + 1) + b, a * (f + 1) + b, a * (f + 1) + j])
}
}
}
function tp(a) {
xs = [];
ys = [];
zs = [];
for (var b = 0, i = x.length; b < i; b++) {
var f = zs[b] = a[2] * x[b] + a[5] * y[b] + a[8] * z[b] + a[11];
xs[b] = X + (a[0] * x[b] + a[3] * y[b] + a[6] * z[b] + a[9]) / f;
ys[b] = Y + (a[1] * x[b] + a[4] * y[b] + a[7] * z[b] + a[10]) / f
}
}
function tn(a) {
nxs = [];
nys = [];
nzs = [];
for (var b = 0, i = x.length; b < i; b++) {
nxs[b] = a[0] * nx[b] + a[3] * ny[b] + a[6] * nz[b];
nys[b] = a[1] * nx[b] + a[4] * ny[b] + a[7] * nz[b];
nzs[b] = a[2] * nx[b] + a[5] * ny[b] + a[8] * nz[b]
}
}
function L(a) {
a = nzs[a] * nzs[a] * 63;
return a < 0 ? 0 : a > 63 ? 63 : a >> 0
}
function U(a) {
var b = a.length - 1;
H.beginPath();
for (H.moveTo(xs[a[b]], ys[a[b]]); b--;) H.lineTo(xs[a[b]], ys[a[b]]);
H.closePath()
}
function tf(a, b, i, f) {
a = [
[Q[a][0], Q[a][1], Q[a][2]],
[Q[a][2], Q[a][3], Q[a][0]]
];
for (var d = 0; d < 2; d++) {
var e = a[d];
H.save();
U(e);
H.clip();
var g = i(e[0]),
h = f(e[0]),
j = xs[e[0]],
k = ys[e[0]],
l = i(e[1]),
m = f(e[1]),
n = xs[e[1]],
r = ys[e[1]],
p = i(e[2]),
q = f(e[2]),
s = xs[e[2]];
e = ys[e[2]];
var t = g * m + h * p + l * q - m * p - h * l - g * q;
H.transform((j * m + h * s + n * q - m * s - h * n - j * q) / t, (k * m + h * e + r * q - m * e - h * r - k * q) / t, (g * n + j * p + l * s - n * p - j * l - g * s) / t, (g * r + k * p + l * e - r * p - k * l - g * e) / t, (g * m * s + h * n * p + j * l * q - j * m * p - h * l * s - g * n * q) / t, (g * m * e + h * r * p + k * l * q - k * m * p - h * l * e - g * r * q) / t);
H.drawImage(b,
0, 0);
H.restore()
}
}
ff = [function (a) {
U(Q[a]);
H.stroke()
}, function (a) {
U(Q[a]);
H.fillStyle = "#000000";
H.fill();
H.stroke()
}, function (a) {
U(Q[a]);
var b = L(Q[a][0]);
a = (a ^ a >> 4) & 2 ? 1 : 7;
H.fillStyle = "rgb(" + (a & 1) * b * 4 + "," + (a & 2) * b * 2 + "," + (a & 4) * b + ")";
H.fill()
}, function (a) {
var b, i = [
[Q[a][0], Q[a][1], Q[a][2]],
[Q[a][2], Q[a][3], Q[a][0]]
];
a = (a ^ a >> 4) & 2 ? 1 : 7;
for (var f = 0; f < 2; f++) {
var d = i[f];
U(d);
var e = L(d[0]),
g = L(d[1]),
h = L(d[2]);
if (e > g) {
b = e;
e = g;
g = b;
b = d[0];
d[0] = d[1];
d[1] = b
}
if (e > h) {
b = e;
e = h;
h = b;
b = d[0];
d[0] = d[2];
d[2] = b
}
if (g > h) {
b = g;
g = h;
h = b;
b = d[1];
d[1] = d[2];
d[2] = b
}
if (e == h) H.fillStyle = "rgb(" + (a & 1) * e * 4 + "," + (a & 2) * e * 2 + "," + (a & 4) * e + ")";
else {
b = xs[d[0]];
var j = ys[d[0]],
k = xs[d[2]],
l = ys[d[2]],
m = (g - e) / (h - e);
g = j + m * (l - j) - ys[d[1]];
d = xs[d[1]] - (b + m * (k - b));
m = 1 / Math.sqrt(g * g + d * d);
g *= m;
d *= m;
k = (k - b) * g + (l - j) * d;
b = H.createLinearGradient(b, j, b + k * g, j + k * d);
b.addColorStop(0, "rgb(" + (a & 1) * e * 4 + "," + (a & 2) * e * 2 + "," + (a & 4) * e + ")");
b.addColorStop(1, "rgb(" + (a & 1) * h * 4 + "," + (a & 2) * h * 2 + "," + (a & 4) * h + ")");
H.fillStyle = b
}
H.fill()
}
}, function (a) {
tf(a, ee, function (b) {
return u[b]
}, function (b) {
return v[b]
})
},
function (a) {
tf(a, (a ^ a >> 4) & 2 ? rg : wg, function (b) {
return 128 + 127 * nxs[b] + rr() - 0.5
}, function (b) {
return 128 + 127 * nys[b] + rr() - 0.5
})
}, function (a) {
ff[a * 6 / Q.length | 0](a)
}];
function M(a, b) {
for (var i = [], f = 0; f < 12; f += 3) for (var d = 0; d < 3; d++) {
var e = a[f] * b[d] + a[f + 1] * b[d + 3] + a[f + 2] * b[d + 6];
if (f == 9) e += b[9 + d];
i.push(e)
}
return i
}
var V = (new Date).getTime(),
last = 0;
ee = E();
rg = G(255, 64, 64);
wg = G(128, 128, 128);
setInterval(function () {
var a = (new Date).getTime();
if (!(a - V > 84E3)) {
var b = (a - V) / 500,
i = b * 0.2,
f = Math.cos(i),
d = Math.sin(i);
i = b * 0.3;
var e = Math.cos(i),
g = Math.sin(i);
i = b * 0.5;
var h = Math.cos(i),
j = Math.sin(i);
b = b * 1.7;
h = [h, j, 0, -j, h, 0, 0, 0, 1, 0, 0, 0];
b = [1, 0, 0, 0, 1, 0, 0, 0, 1, 100 * Math.cos(b), 100 * Math.sin(b), 0];
b = M(M(M([1, 0, 0, 0, f, d, 0, -d, f, 0, 0, 0], [e, 0, g, 0, 1, 0, -g, 0, e, 0, 0, 0]), h), b);
H.fillStyle = "#000000";
H.fillRect(0, 0, c.width, c.height);
if (!last) {
last = a + 11E3;
mT(X * 1.2, X * 0.4, ns, nt)
}
if (a > last + 50 && (ns < SS || nt < TT)) {
last = a;
ns < SS && ns++;
nt < TT && nt++;
mT(X * 1.2, X * 0.4, ns, nt)
}
tp(M(b, [800, 0, 0, 0, 800, 0, 0, 0, 1, 0, 0, 1600]));
tn(b);
b = [];
f = 0;
for (d = Q.length; f < d; f++) b.push([zs[Q[f][0]] + zs[Q[f][1]] + zs[Q[f][2]] + zs[Q[f][3]], f]);
b.sort(function (k, l) {
return k[0] - l[0]
});
H.fillStyle = "#000000";
H.strokeStyle = "#40FF40";
H.lineWidth = 2;
d = ff[Math.max(0, Math.min(a - V - 11E3 >> 13, 6))];
for (f = b.length - 1; f >= 0; f--) d(b[f][1]);
H.fillStyle = "#FFFFFF";
H.beginPath();
d = (a - V) / 2E3;
if (d > 38) d = Math.max(0, 3 - (d - 38));
if (d < 3) {
for (f = 0; f <= 10; f++) {
b = -i * 3 + f * 2 * Math.PI / 10;
g = d * X / (1 + (f & 1));
e = X + g * Math.cos(b);
b = Y + g * Math.sin(b);
f == 0 ? H.moveTo(e, b) : H.lineTo(e, b)
}
H.moveTo(0, 0);
H.lineTo(0, Y * 2);
H.lineTo(X * 2, Y * 2);
H.lineTo(X * 2, 0);
H.fill()
}
a = (a - V) / 4E3 >> 0;
if (a < R.length) o.innerHTML = R[a]
}
}, 1);
