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#10print & SimplexNoise
Raw
.block
license: gpl-3.0
border: no
Raw
README.md
Raw
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>#10print</title>
<meta name="description" content="creative coding related to #10print">
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="simplex-noise.min.js"></script>
<style>
#layouter {
text-align: center;
position: relative;
}
#wip {
display: none;
position: absolute;
top: 220px;
left: 120px;
font-size: 40px;
color: white;
}
svg {
margin: 1px;
border-radius: 1000px;
box-shadow: 2px 2px 6px grey;
background-color: black;
}
.char {
stroke:green;
stroke-width: 3px;
stroke-linecap: round;
}
</style>
</head>
<body>
<div id="layouter">
<svg>
<g id="drawing-area"></g>
</svg>
<div id="wip">
Work in progress ...
</div>
</div>
<script>
var _2PI = 2*Math.PI,
sqrt = Math.sqrt,
sqr = function(d) { return Math.pow(d,2); },
WITH_TRANSITION = true,
WITHOUT_TRANSITION = false;
//begin: layout conf.
var totalWidth = 500,
totalHeight = 500,
controlsHeight = 0,
svgRadius = (totalHeight-controlsHeight)/2,
svgbw = 1, //svg border width
svgHeight = 2*svgRadius,
svgWidth = 2*svgRadius,
radius = svgRadius-svgbw,
width = 2*svgRadius,
height = 2*svgRadius,
halfRadius = radius/2
halfWidth = halfRadius,
halfHeight = halfRadius,
quarterRadius = radius/4;
quarterWidth = quarterRadius,
quarterHeight = quarterRadius;
var cellSize = 10, // in [10, 20 ,40]
strokeSize = cellSize/10+1,
halfCellSize = cellSize/2,
cellCount = Math.floor(2*radius/cellSize),
drawingAreaSize = cellSize*cellCount,
drawingAreaLeft = drawingAreaTop = (2*radius-drawingAreaSize)/2;
//end: layout conf.
//begin: drawing conf.
var withTransition = true,
duration = 250,
simplex = new SimplexNoise(),
spaceLength = cellSize*10, // in [*1, *5, *10, *20]
timeLength = 10000;
//end: drawing conf.
//begin: init
var cellData = [];
//end: init
initData();
initLayout();
function initData() {
for(var x=0; x<cellCount; x++) {
for (var y=0; y<cellCount; y++) {
cellData.push({
x: cellSize*x,
y: cellSize*y,
sValue: 0,
})
}
}
}
function simplexValue(x, y, elapsed) {
return simplex.noise3D(x/spaceLength, y/spaceLength, elapsed/timeLength);
}
var rotate = function(d){ return "rotate("+((d.sValue<0)? 0 : 90)+")"; };
var opacity = function(d){ return (d.sValue+1)/2; };
function initLayout() {
d3.select("#layouter").style("width", totalWidth+"px").style("height", totalHeight+"px");
d3.select("svg").attr("width", svgWidth).attr("height", svgHeight);
d3.select("#drawing-area").attr("width", drawingAreaSize).attr("height", drawingAreaSize).attr("transform", "translate("+[drawingAreaLeft, drawingAreaTop]+")").style("stroke-width", strokeSize);
//begin: add slashes
var d3selLines = d3.select("#drawing-area").selectAll(".char").data(cellData);
var foo = halfCellSize-strokeSize+1;
var slashPath = "M"+[-foo, -foo]+"L"+[foo, foo];
d3selLines = d3selLines.enter()
.append("g")
.classed("char", true)
.attr("transform", function(d){ return "translate("+[d.x+halfCellSize, d.y+halfCellSize]+")"; })
.append("path")
.classed("slash", true)
.attr("d", slashPath);
//end: add slashes
redraw(WITHOUT_TRANSITION);
}
d3.interval(function(elapsed) {
//begin: update cells' value with Simplex
cellData.forEach(function(d) {
d.sValue = simplexValue(d.x, d.y, elapsed);
})
//end: update cells' value with Simplex
//redraw
redraw(withTransition);
}, duration)
function redraw(withTransition) {
var selection = d3.select("#drawing-area").selectAll(".slash").data(cellData);
if (withTransition) {
selection = selection.transition().duration(duration);
}
selection.attr("transform", rotate).style("opacity", opacity);
}
</script>
</body>
</html>
Raw
simplex-noise.min.js
/*! simplex-noise.js: copyright 2012 Jonas Wagner, licensed under a MIT license. See https://github.com/jwagner/simplex-noise.js for details */
(function(){function o(e){e||(e=Math.random),this.p=new Uint8Array(256),this.perm=new Uint8Array(512),this.permMod12=new Uint8Array(512);for(var t=0;t<256;t++)this.p[t]=e()*256;for(t=0;t<512;t++)this.perm[t]=this.p[t&255],this.permMod12[t]=this.perm[t]%12}var e=.5*(Math.sqrt(3)-1),t=(3-Math.sqrt(3))/6,n=1/3,r=1/6,i=(Math.sqrt(5)-1)/4,s=(5-Math.sqrt(5))/20;o.prototype={grad3:new Float32Array([1,1,0,-1,1,0,1,-1,0,-1,-1,0,1,0,1,-1,0,1,1,0,-1,-1,0,-1,0,1,1,0,-1,1,0,1,-1,0,-1,-1]),grad4:new Float32Array([0,1,1,1,0,1,1,-1,0,1,-1,1,0,1,-1,-1,0,-1,1,1,0,-1,1,-1,0,-1,-1,1,0,-1,-1,-1,1,0,1,1,1,0,1,-1,1,0,-1,1,1,0,-1,-1,-1,0,1,1,-1,0,1,-1,-1,0,-1,1,-1,0,-1,-1,1,1,0,1,1,1,0,-1,1,-1,0,1,1,-1,0,-1,-1,1,0,1,-1,1,0,-1,-1,-1,0,1,-1,-1,0,-1,1,1,1,0,1,1,-1,0,1,-1,1,0,1,-1,-1,0,-1,1,1,0,-1,1,-1,0,-1,-1,1,0,-1,-1,-1,0]),noise2D:function(n,r){var i=this.permMod12,s=this.perm,o=this.grad3,u,a,f,l=(n+r)*e,c=Math.floor(n+l),h=Math.floor(r+l),p=(c+h)*t,d=c-p,v=h-p,m=n-d,g=r-v,y,b;m>g?(y=1,b=0):(y=0,b=1);var w=m-y+t,E=g-b+t,S=m-1+2*t,x=g-1+2*t,T=c&255,N=h&255,C=.5-m*m-g*g;if(C<0)u=0;else{var k=i[T+s[N]]*3;C*=C,u=C*C*(o[k]*m+o[k+1]*g)}var L=.5-w*w-E*E;if(L<0)a=0;else{var A=i[T+y+s[N+b]]*3;L*=L,a=L*L*(o[A]*w+o[A+1]*E)}var O=.5-S*S-x*x;if(O<0)f=0;else{var M=i[T+1+s[N+1]]*3;O*=O,f=O*O*(o[M]*S+o[M+1]*x)}return 70*(u+a+f)},noise3D:function(e,t,i){var s=this.permMod12,o=this.perm,u=this.grad3,a,f,l,c,h=(e+t+i)*n,p=Math.floor(e+h),d=Math.floor(t+h),v=Math.floor(i+h),m=(p+d+v)*r,g=p-m,y=d-m,b=v-m,w=e-g,E=t-y,S=i-b,x,T,N,C,k,L;w<E?E<S?(x=0,T=0,N=1,C=0,k=1,L=1):w<S?(x=0,T=1,N=0,C=0,k=1,L=1):(x=0,T=1,N=0,C=1,k=1,L=0):E<S?w<S?(x=0,T=0,N=1,C=1,k=0,L=1):(x=1,T=0,N=0,C=1,k=0,L=1):(x=1,T=0,N=0,C=1,k=1,L=0);var A=w-x+r,O=E-T+r,M=S-N+r,_=w-C+2*r,D=E-k+2*r,P=S-L+2*r,H=w-1+3*r,B=E-1+3*r,j=S-1+3*r,F=p&255,I=d&255,q=v&255,R=.6-w*w-E*E-S*S;if(R<0)a=0;else{var U=s[F+o[I+o[q]]]*3;R*=R,a=R*R*(u[U]*w+u[U+1]*E+u[U+2]*S)}var z=.6-A*A-O*O-M*M;if(z<0)f=0;else{var W=s[F+x+o[I+T+o[q+N]]]*3;z*=z,f=z*z*(u[W]*A+u[W+1]*O+u[W+2]*M)}var X=.6-_*_-D*D-P*P;if(X<0)l=0;else{var V=s[F+C+o[I+k+o[q+L]]]*3;X*=X,l=X*X*(u[V]*_+u[V+1]*D+u[V+2]*P)}var $=.6-H*H-B*B-j*j;if($<0)c=0;else{var J=s[F+1+o[I+1+o[q+1]]]*3;$*=$,c=$*$*(u[J]*H+u[J+1]*B+u[J+2]*j)}return 32*(a+f+l+c)},noise4D:function(e,t,n,r){var o=this.permMod12,u=this.perm,a=this.grad4,f,l,c,h,p,d=(e+t+n+r)*i,v=Math.floor(e+d),m=Math.floor(t+d),g=Math.floor(n+d),y=Math.floor(r+d),b=(v+m+g+y)*s,w=v-b,E=m-b,S=g-b,x=y-b,T=e-w,N=t-E,C=n-S,k=r-x,L=0,A=0,O=0,M=0;T>N?L++:A++,T>C?L++:O++,T>k?L++:M++,N>C?A++:O++,N>k?A++:M++,C>k?O++:M++;var _,D,P,H,B,j,F,I,q,R,U,z;_=L<3?0:1,D=A<3?0:1,P=O<3?0:1,H=M<3?0:1,B=L<2?0:1,j=A<2?0:1,F=O<2?0:1,I=M<2?0:1,q=L<1?0:1,R=A<1?0:1,U=O<1?0:1,z=M<1?0:1;var W=T-_+s,X=N-D+s,V=C-P+s,$=k-H+s,J=T-B+2*s,K=N-j+2*s,Q=C-F+2*s,G=k-I+2*s,Y=T-q+3*s,Z=N-R+3*s,et=C-U+3*s,tt=k-z+3*s,nt=T-1+4*s,rt=N-1+4*s,it=C-1+4*s,st=k-1+4*s,ot=v&255,ut=m&255,at=g&255,ft=y&255,lt=.6-T*T-N*N-C*C-k*k;if(lt<0)f=0;else{var ct=u[ot+u[ut+u[at+u[ft]]]]%32*4;lt*=lt,f=lt*lt*(a[ct]*T+a[ct+1]*N+a[ct+2]*C+a[ct+3]*k)}var ht=.6-W*W-X*X-V*V-$*$;if(ht<0)l=0;else{var pt=u[ot+_+u[ut+D+u[at+P+u[ft+H]]]]%32*4;ht*=ht,l=ht*ht*(a[pt]*W+a[pt+1]*X+a[pt+2]*V+a[pt+3]*$)}var dt=.6-J*J-K*K-Q*Q-G*G;if(dt<0)c=0;else{var vt=u[ot+B+u[ut+j+u[at+F+u[ft+I]]]]%32*4;dt*=dt,c=dt*dt*(a[vt]*J+a[vt+1]*K+a[vt+2]*Q+a[vt+3]*G)}var mt=.6-Y*Y-Z*Z-et*et-tt*tt;if(mt<0)h=0;else{var gt=u[ot+q+u[ut+R+u[at+U+u[ft+z]]]]%32*4;mt*=mt,h=mt*mt*(a[gt]*Y+a[gt+1]*Z+a[gt+2]*et+a[gt+3]*tt)}var yt=.6-nt*nt-rt*rt-it*it-st*st;if(yt<0)p=0;else{var bt=u[ot+1+u[ut+1+u[at+1+u[ft+1]]]]%32*4;yt*=yt,p=yt*yt*(a[bt]*nt+a[bt+1]*rt+a[bt+2]*it+a[bt+3]*st)}return 27*(f+l+c+h+p)}},typeof define!="undefined"&&define.amd?define(function(){return o}):typeof window!="undefined"&&(window.SimplexNoise=o),typeof exports!="undefined"&&(exports.SimplexNoise=o),typeof module!="undefined"&&(module.exports=o)})();
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