JS1k: The JavaScript code golfing competition

for(_='0,~.5&te%)*g$loa#g.cin);var (animgl_Po=r.r/ttribfor,.1.(34962,/pow(s,tion0.,vec),tDa%.now().12.	Size*smooths%p(f#t nimt;varyg 4 c;void ma(){f(getULoca(b,"(e+t+3.14*mod(p.r,2.))*s+v(s*
(f  g)g[f[0]+[f[6]]]=g[f];b=P((f=2;f--;ompileShader(caS(b,c))c=S(35632+fsS(c,f?"au% 2 p;u 2 r;u v(v){return fract((+cos(v))*415.927)-&;}mr.g,s=p.r*4e-05,e=10.*s;mat4 f=mat4(.92542,-&4*m74,-.953,n=v(s*67.g=.0258,-e)+.3;si=f*4(s
59.$,cos
6$,n*g,10.*(n+&$;c=4(	2	.45.4r.r*.0004/}":"precision mediump f#d=distance(Coord,2(&)if(d>&)discard;gl_FragColor=2*c,d}"e=new F#t32Array(14E4(i=0;14E4>i;i+=2)e[i]=i/2,e[i+1]=0;ver%xAPo%r(eV(bfB())2,5126,bDe,35044lo(bug(b)u2r"a.width,a.heightblendFunc(77~1e(3042o(~~~1h=;=func(){d=(-h)/5E3;lear(16384dr(~u1t"d7E4requestAnimaFrame)})(';h=/[^ "(-}]/.exec(_);)with(_.split(h))_=join(shift());eval(_)

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

/* remove vars after closure compiler pass */
var shaderProgram;
var shader;
var time=0.0;
var U_TIME = "t";
var U_RESOLUTION = "r";
var fragShaderCode = "precision mediump float;varying vec4 color;" +
"void main(){float d = distance(gl_PointCoord,vec2(.5));if (d>.5) discard;gl_FragColor = color;}";

var NUM_PARTICLES=70000;

var vertShaderCode = "attribute vec2 p;uniform vec2 r;uniform float t;varying vec4 color;"+
"float H( float n ){return fract( (1.0 + cos(n)) * 415.92653) - .5;}"+
"void main(){float aspect=r.x/r.y;"+
"float n=pow(p.x/70000.,1.06);float n1=10.*n;"+
"float arms=2.;"+
"float twopi=6.28;"+
"mat3 m = mat3(.9,.25,0.4,"+
	          "-.5,.4*aspect,.7,"+
	          "0.,-.9,.5);"+
"mat4 c = mat4(1.,0.,0.,0.,"+
	          "0.,1.,0.,0.,"+
	          "0.,0.,1.,.5,"+
	          "0.,0.,0.,1.);"+
"float varx = H(n*59.);"+
"float vary = H(n*61.);"+
"float varz = H(n*67.);"+
"float fac = .5*smoothstep(-.0,1.8,(1.-n))+.3;"+
"gl_Position=c*vec4(m*"+
	"vec3("+
		 "sin(n1+t+twopi/arms*mod(p.x,arms))*n + varx * fac,"+
		 "cos(n1+t+twopi/arms*mod(p.x,arms))*n + vary * fac,"+
		 "varz * fac)"+
         ",1.);gl_PointSize=100.*(varz+.5);"+
         "color=vec4(.1/pow(n,2.2),.1/pow(n,2.),.45/pow(n,.4),.4/gl_PointSize);}"

for(shaderProgram = g.createProgram(),f=2;f--;g.compileShader(shader),g.attachShader(shaderProgram, shader)){
	shader = g.createShader(g.FRAGMENT_SHADER+f);
	g.shaderSource(shader,f?vertShaderCode:fragShaderCode);
}

var array = new Float32Array(NUM_PARTICLES*2);
for (i=0;i<NUM_PARTICLES*2;i+=2) {
	array[i]=i/2;array[i+1]=0;
}

g.vertexAttribPointer(g.enableVertexAttribArray(g.bindBuffer(g.ARRAY_BUFFER,g.createBuffer())),2,g.FLOAT,g.bufferData(g.ARRAY_BUFFER,array,g.STATIC_DRAW),g.linkProgram(shaderProgram),g.useProgram(shaderProgram));

g.uniform2f(g.getUniformLocation(shaderProgram,U_RESOLUTION),a.width,a.height);

g.blendFunc(g.SRC_ALPHA, g.ONE);
g.enable(g.BLEND);
//g.disable(g.DEPTH_TEST);

g.clearColor(0,0,0,1);


(anim = function () {
time+=.002;
g.clear(g.COLOR_BUFFER_BIT);
g.drawArrays(g.POINTS,g.uniform1f(g.getUniformLocation(shaderProgram,U_TIME),time),NUM_PARTICLES);
requestAnimationFrame(anim);
})();