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<!DOCTYPE html>
<html><head>
<meta charset="utf-8">
<meta name="keywords" content="UIC, Computer, CS, CST, Computer Science, 计算机, 联合国际学院, 计算机科学, 计算机科学与技术 ">
<meta name="description" content="UIC HCC 计算机俱乐部网站">
<meta name="viewport" content="width=device-width, minimum-scale=1.0, maximum-scale=1.0">
<meta http-equiv="Cache-Control" content="no-siteapp">
<title>404 Page not found | UICHCC 计算机俱乐部</title>
<link rel="icon" href="/new-site-review/img/favicon.ico">
<link href="/new-site-review/css/bootstrap.min.css" rel="stylesheet">
<script src="https://kit.fontawesome.com/ec567a7594.js"></script>
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</head><body>
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</button>
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<ul class="navbar-nav">
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<div class="carousel-inner">
<div class="carousel-item active" style="background-image: url(https://i.loli.net/2017/09/16/59bcd7297818a.jpg);">
<canvas id=c></canvas>
<div class="container">
<div class="carousel-caption carousel-caption-dark carousel-caption-dark d-none d-block text-left">
<h1>404 - Page Not Found</h1>
<p>The request URL was not found on this server.</p>
</div>
</div>
</div>
</div>
</div>
<script>
var {atan2,sqrt,sin,cos,PI,acos} = Math;
function project3D(x,y,z,vars){
x-=vars.camX,y-=vars.camY,z-=vars.camZ;
p=atan2(x,z),d=sqrt(z*z+x*x),x=sin(p-vars.yaw)*d,z=cos(p-vars.yaw)*d;
p=atan2(y,z),d=sqrt(y*y+z*z),y=sin(p-vars.pitch)*d,z=cos(p-vars.pitch)*d;
n=-9,b=1,l=9,d=1,e=0,f=0,g=x,h=z,k=(h-f)*(l-n)-(g-e)*(d-b),m=((g-e)*(b-f)-(h-f)*(n-e))/k;
return {x:vars.cx+(n+m*(l-n))*vars.scale,y:vars.cy+y/z*vars.scale,d:sqrt(x*x+y*y+z*z)};
}
function elevation(x,y,z){
return acos(z / sqrt(x*x+y*y+z*z));
}
function subdivide(shape,subdivisions){
var t=shape.segs.length;
for(var i=0;i<t;++i){
var x1=shape.segs[i].a.x;
var y1=shape.segs[i].a.y;
var z1=shape.segs[i].a.z;
var x2=(shape.segs[i].b.x-x1)/subdivisions;
var y2=(shape.segs[i].b.y-y1)/subdivisions;
var z2=(shape.segs[i].b.z-z1)/subdivisions;
shape.segs[i].b.x=x1+x2;
shape.segs[i].b.y=y1+y2;
shape.segs[i].b.z=z1+z2;
var x3=x2;
var y3=y2;
var z3=z2;
for(var k=0;k<subdivisions-1;++k){
shape.segs.push(new Seg(x1+x2,y1+y2,z1+z2,x1+x2+x3,y1+y2+y3,z1+z2+z3));
x2+=x3;
y2+=y3;
z2+=z3;
}
}
}
function Vert(x,y,z){
this.x = x;
this.y = y;
this.z = z;
}
function Seg(x1,y1,z1,x2,y2,z2){
this.a = new Vert(x1,y1,z1);
this.b = new Vert(x2,y2,z2);
this.dist=0;
}
function Polygon(){
this.verts=new Array();
this.dist=0;
}
function process(vars){
p = atan2(vars.camX, vars.camZ);
d = sqrt(vars.camX * vars.camX + vars.camZ * vars.camZ);
d -= sin(vars.frameNo / 80) / 120;
t = sin(vars.frameNo / 200) / 100;
vars.camX = sin(p + t) * d;
vars.camZ = cos(p + t) * d;
vars.camY -= cos(vars.frameNo / 160) / 80;
vars.yaw = PI + p + t;
vars.pitch = elevation(vars.camX, vars.camZ, vars.camY) - PI / 2;
}
function draw(vars){
vars.ctx.globalAlpha=1;
vars.ctx.fillStyle="#012";
vars.ctx.fillRect(0, 0, vars.canvas.width, vars.canvas.height);
var x1,y1,z1,x2,y2,z2,point1,point2;
for(var i=0;i<vars.shapes.length;++i){
for(var j=0;j<vars.shapes[i].polys.length;++j){
if(i%2){
vars.ctx.globalAlpha=.50;
vars.ctx.fillStyle="#c6c6c6";
x=vars.shapes[i].x+vars.shapes[i].polys[j].cx;
y=vars.shapes[i].y+vars.shapes[i].polys[j].cy;
z=vars.shapes[i].z+vars.shapes[i].polys[j].cz;
point1=project3D(x,y,z,vars);
if(point1.d != -1){
var s=15/(1+point1.d);
vars.ctx.fillRect(point1.x-s/2,point1.y-s/2,s,s);
}
}else{
vars.ctx.globalAlpha=.1;
for(var k=0;k<vars.shapes[i].polys[j].segs.length;++k){
x=vars.shapes[i].x+vars.shapes[i].polys[j].segs[k].a.x;
y=vars.shapes[i].y+vars.shapes[i].polys[j].segs[k].a.y;
z=vars.shapes[i].z+vars.shapes[i].polys[j].segs[k].a.z;
point1=project3D(x,y,z,vars);
if(point1.d != -1){
vars.shapes[i].polys[j].segs[k].dist=point1.d;
x=vars.shapes[i].x+vars.shapes[i].polys[j].segs[k].b.x;
y=vars.shapes[i].y+vars.shapes[i].polys[j].segs[k].b.y;
z=vars.shapes[i].z+vars.shapes[i].polys[j].segs[k].b.z;
point2=project3D(x,y,z,vars);
if(point2.d != -1){
vars.ctx.strokeStyle="#00ff75";
vars.ctx.lineWidth=15/(1+point1.d);
vars.ctx.beginPath();
vars.ctx.moveTo(point1.x,point1.y);
vars.ctx.lineTo(point2.x,point2.y);
vars.ctx.stroke();
}
}
}
}
}
}
}
function pushVert(p1,p2,dist,poly){
x=sin(p1)*sin(p2)*dist;
z=cos(p1)*sin(p2)*dist;
y=cos(p2)*dist;
poly.verts.push(new Vert(x,y,z));
}
function expandShape(shape,convexity){
for(j=0;j<shape.polys.length;++j){
x=shape.polys[j].cx;
y=shape.polys[j].cy;
z=shape.polys[j].cz;
d=sqrt(x*x+y*y+z*z);
p1=atan2(x,y);
p2=elevation(x,y,z);
d2=d+(1-d)*convexity;
shape.polys[j].cx=sin(p1)*sin(p2)*d2;
shape.polys[j].cy=cos(p1)*sin(p2)*d2;
shape.polys[j].cz=cos(p2)*d2;
for(k=0;k<shape.polys[j].verts.length;++k){
x=shape.polys[j].verts[k].x;
y=shape.polys[j].verts[k].y;
z=shape.polys[j].verts[k].z;
d=sqrt(x*x+y*y+z*z);
p1=atan2(x,y);
p2=elevation(x,y,z);
d2=d+(1-d)*convexity;
shape.polys[j].verts[k].x=sin(p1)*sin(p2)*d2;
shape.polys[j].verts[k].y=cos(p1)*sin(p2)*d2;
shape.polys[j].verts[k].z=cos(p2)*d2;
}
}
return shape;
}
function segmentize(source){
var polys=[],x1,y1,z1,x2,y2,z2;
for(var i=0;i<source.length;++i){
var poly={};
poly.segs=[];
for(var j=0;j<source[i].verts.length;++j){
x1=source[i].verts[j].x;
y1=source[i].verts[j].y;
z1=source[i].verts[j].z;
if(j<source[i].verts.length-1){
x2=source[i].verts[j+1].x;
y2=source[i].verts[j+1].y;
z2=source[i].verts[j+1].z;
}else{
x2=source[i].verts[0].x;
y2=source[i].verts[0].y;
z2=source[i].verts[0].z;
}
poly.segs.push(new Seg(x1,y1,z1,x2,y2,z2));
}
polys.push(poly);
}
return polys;
}
function Shape(x,y,z){
this.polys=[];
this.x=x, this.y=y, this.z=z;
}
function Icosahedron(x,y,z){
var size=1, phi = 1.61803398875;
this.polys=[];
this.x=x, this.y=y, this.z=z, this.dist=0;
x1=-phi, y1=-1, z1=0,
x2=phi, y2=-1, z2=0,
x3=phi, y3=1, z3=0,
x4=-phi, y4=1, z4=0,
y5=-phi, z5=-1, x5=0,
y6=phi, z6=-1, x6=0,
y7=phi, z7=1, x7=0,
y8=-phi, z8=1, x8=0,
z9=-phi, x9=-1, y9=0,
z10=phi, x10=-1, y10=0,
z11=phi, x11=1, y11=0,
z12=-phi, x12=1, y12=0;
p={}; p.verts=[];
p.verts.push(new Vert(x1,y1,z1));
p.verts.push(new Vert(x5,y5,z5));
p.verts.push(new Vert(x8,y8,z8));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x2,y2,z2));
p.verts.push(new Vert(x5,y5,z5));
p.verts.push(new Vert(x8,y8,z8));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x3,y3,z3));
p.verts.push(new Vert(x6,y6,z6));
p.verts.push(new Vert(x7,y7,z7));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x4,y4,z4));
p.verts.push(new Vert(x6,y6,z6));
p.verts.push(new Vert(x7,y7,z7));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x9,y9,z9));
p.verts.push(new Vert(x12,y12,z12));
p.verts.push(new Vert(x5,y5,z5));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x9,y9,z9));
p.verts.push(new Vert(x12,y12,z12));
p.verts.push(new Vert(x6,y6,z6));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x10,y10,z10));
p.verts.push(new Vert(x11,y11,z11));
p.verts.push(new Vert(x7,y7,z7));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x10,y10,z10));
p.verts.push(new Vert(x11,y11,z11));
p.verts.push(new Vert(x8,y8,z8));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x1,y1,z1));
p.verts.push(new Vert(x9,y9,z9));
p.verts.push(new Vert(x4,y4,z4));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x1,y1,z1));
p.verts.push(new Vert(x10,y10,z10));
p.verts.push(new Vert(x4,y4,z4));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x2,y2,z2));
p.verts.push(new Vert(x11,y11,z11));
p.verts.push(new Vert(x3,y3,z3));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x2,y2,z2));
p.verts.push(new Vert(x12,y12,z12));
p.verts.push(new Vert(x3,y3,z3));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x2,y2,z2));
p.verts.push(new Vert(x11,y11,z11));
p.verts.push(new Vert(x8,y8,z8));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x2,y2,z2));
p.verts.push(new Vert(x12,y12,z12));
p.verts.push(new Vert(x5,y5,z5));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x1,y1,z1));
p.verts.push(new Vert(x10,y10,z10));
p.verts.push(new Vert(x8,y8,z8));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x1,y1,z1));
p.verts.push(new Vert(x9,y9,z9));
p.verts.push(new Vert(x5,y5,z5));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x4,y4,z4));
p.verts.push(new Vert(x9,y9,z9));
p.verts.push(new Vert(x6,y6,z6));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x3,y3,z3));
p.verts.push(new Vert(x12,y12,z12));
p.verts.push(new Vert(x6,y6,z6));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x4,y4,z4));
p.verts.push(new Vert(x10,y10,z10));
p.verts.push(new Vert(x7,y7,z7));
this.polys.push(p);
p={}; p.verts=[];
p.verts.push(new Vert(x3,y3,z3));
p.verts.push(new Vert(x11,y11,z11));
p.verts.push(new Vert(x7,y7,z7));
this.polys.push(p);
}
function subdivide(shape,subdivisions){
for(var j=0;j<subdivisions;++j){
newShape=new Shape(shape.x,shape.y,shape.z);
for(var k=0;k<shape.polys.length;++k){
x1=(shape.polys[k].verts[1].x+shape.polys[k].verts[0].x)/2;
y1=(shape.polys[k].verts[1].y+shape.polys[k].verts[0].y)/2;
z1=(shape.polys[k].verts[1].z+shape.polys[k].verts[0].z)/2;
x2=(shape.polys[k].verts[2].x+shape.polys[k].verts[1].x)/2;
y2=(shape.polys[k].verts[2].y+shape.polys[k].verts[1].y)/2;
z2=(shape.polys[k].verts[2].z+shape.polys[k].verts[1].z)/2;
x3=(shape.polys[k].verts[0].x+shape.polys[k].verts[2].x)/2;
y3=(shape.polys[k].verts[0].y+shape.polys[k].verts[2].y)/2;
z3=(shape.polys[k].verts[0].z+shape.polys[k].verts[2].z)/2;
p=new Polygon();
p.verts.push(new Vert(shape.polys[k].verts[0].x,shape.polys[k].verts[0].y,shape.polys[k].verts[0].z));
p.verts.push(new Vert(x1,y1,z1));
p.verts.push(new Vert(x3,y3,z3));
p.cx=(p.verts[0].x+p.verts[1].x+p.verts[2].x)/3;
p.cy=(p.verts[0].y+p.verts[1].y+p.verts[2].y)/3;
p.cz=(p.verts[0].z+p.verts[1].z+p.verts[2].z)/3;
newShape.polys.push(p);
p=new Polygon();
p.verts.push(new Vert(x1,y1,z1));
p.verts.push(new Vert(shape.polys[k].verts[1].x,shape.polys[k].verts[1].y,shape.polys[k].verts[1].z));
p.verts.push(new Vert(x2,y2,z2));
p.cx=(p.verts[0].x+p.verts[1].x+p.verts[2].x)/3;
p.cy=(p.verts[0].y+p.verts[1].y+p.verts[2].y)/3;
p.cz=(p.verts[0].z+p.verts[1].z+p.verts[2].z)/3;
newShape.polys.push(p);
p=new Polygon();
p.verts.push(new Vert(x3,y3,z3));
p.verts.push(new Vert(x2,y2,z2));
p.verts.push(new Vert(shape.polys[k].verts[2].x,shape.polys[k].verts[2].y,shape.polys[k].verts[2].z));
p.cx=(p.verts[0].x+p.verts[1].x+p.verts[2].x)/3;
p.cy=(p.verts[0].y+p.verts[1].y+p.verts[2].y)/3;
p.cz=(p.verts[0].z+p.verts[1].z+p.verts[2].z)/3;
newShape.polys.push(p);
p=new Polygon();
p.verts.push(new Vert(x3,y3,z3));
p.verts.push(new Vert(x1,y1,z1));
p.verts.push(new Vert(x2,y2,z2));
p.cx=(p.verts[0].x+p.verts[1].x+p.verts[2].x)/3;
p.cy=(p.verts[0].y+p.verts[1].y+p.verts[2].y)/3;
p.cz=(p.verts[0].z+p.verts[1].z+p.verts[2].z)/3;
newShape.polys.push(p);
}
shape=newShape;
}
return shape;
}
function loadScene(vars){
var x,y,z,x1,y1,z1,x2,y2,z2,x3,y3,z3;
vars.shapes=[];
for(var i=0;i<3;++i){
var p=PI*2/3*i;
x=sin(p)*1.5;
y=-i/2;
z=cos(p)*1.5;
shape=new Icosahedron(x,y,z);
shape=subdivide(shape,i);
shape=expandShape(shape,1);
shape.polys=segmentize(shape.polys);
vars.shapes.push(shape);
shape=new Icosahedron(x,y,z);
shape=subdivide(shape,i);
shape=expandShape(shape,1);
shape=subdivide(shape,1);
vars.shapes.push(shape);
}
}
function frame(vars) {
if(vars === undefined){
var vars={};
vars.canvas = c;
vars.ctx = vars.canvas.getContext("2d");
vars.canvas.width = document.body.clientWidth;
vars.canvas.height = document.body.clientHeight;
window.addEventListener("resize", function(){
vars.canvas.width = document.body.clientWidth;
vars.canvas.height = document.body.clientHeight;
vars.cx=vars.canvas.width/2;
vars.cy=vars.canvas.height/2;
}, true);
vars.frameNo=0;
vars.rFrameNo=0;
vars.camX = 0;
vars.camY = 0;
vars.camZ = -5;
vars.yaw=0;
vars.pitch=0;
vars.mx=0;
vars.my=0;
vars.omx=vars.mx;
vars.omy=vars.my;
vars.cx=vars.canvas.width/2;
vars.cy=vars.canvas.height/2;
vars.scale=800;
vars.floor=2.5;
loadScene(vars);
}
vars.frameNo++;
requestAnimationFrame(function() {
frame(vars);
});
process(vars);
draw(vars);
}
frame();
</script>
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