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Another update from ingydotnet^djgoku

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Ingy döt Net 2015-11-18 06:14:39 +00:00
parent 91df62d461
commit 948b86eafa
7604 changed files with 108452 additions and 22726 deletions
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92
Task/Mandelbrot-set/JavaScript/mandelbrot-set.js
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@ -1,69 +1,69 @@
function Mandeliter( cx, cy, maxiter ){
var
x = 0.0,
y = 0.0,
xx = 0,
yy = 0,
xy = 0;
function mandelIter(cx, cy, maxIter) {
var x = 0.0;
var y = 0.0;
var xx = 0;
var yy = 0;
var xy = 0;
var i = maxiter;
while( i-- && xx + yy <= 4 ){
var i = maxIter;
while (i-- && xx + yy <= 4) {
xy = x * y;
xx = x * x;
yy = y * y;
x = xx - yy + cx;
y = xy + xy + cy;
}
return maxiter - i;
return maxIter - i;
}
function Mandelbrot( width,height, xmin,xmax, ymin,ymax, iterations ){
var canvas = document.createElement( 'canvas' );
canvas.width = width;
canvas.height = height;
function mandelbrot(canvas, xmin, xmax, ymin, ymax, iterations) {
var width = canvas.width;
var height = canvas.height;
var ctx = canvas.getContext( '2d' );
var img = ctx.getImageData( 0, 0, width, height );
var ctx = canvas.getContext('2d');
var img = ctx.getImageData(0, 0, width, height);
var pix = img.data;
for( var ix = 0; ix < width; ++ix )
for( var iy = 0; iy < height; ++iy )
{
for (var ix = 0; ix < width; ++ix) {
for (var iy = 0; iy < height; ++iy) {
var x = xmin + (xmax - xmin) * ix / (width - 1);
var y = ymin + (ymax - ymin) * iy / (height - 1);
var i = Mandeliter( x, y, iterations );
var i = mandelIter(x, y, iterations);
var ppos = 4 * (width * iy + ix);
if( i === iterations )
{
if (i > iterations) {
pix[ppos] = 0;
pix[ppos+1] = 0;
pix[ppos+2] = 0;
}
else
{
var c = 3 * Math.log(i)/Math.log(iterations - 1.0);
if (c < 1)
{
pix[ppos] = 255*c;
pix[ppos+1] = 0;
pix[ppos+2] = 0;
pix[ppos + 1] = 0;
pix[ppos + 2] = 0;
} else {
var c = 3 * Math.log(i) / Math.log(iterations - 1.0);
if (c < 1) {
pix[ppos] = 255 * c;
pix[ppos + 1] = 0;
pix[ppos + 2] = 0;
}
else if( c < 2 )
{
else if ( c < 2 ) {
pix[ppos] = 255;
pix[ppos+1] = 255*(c-1);
pix[ppos+2] = 0;
}
else
{
pix[ppos + 1] = 255 * (c - 1);
pix[ppos + 2] = 0;
} else {
pix[ppos] = 255;
pix[ppos+1] = 255;
pix[ppos+2] = 255*(c-2);
pix[ppos + 1] = 255;
pix[ppos + 2] = 255 * (c - 2);
}
}
pix[ ppos+3 ] = 255;
pix[ppos + 3] = 255;
}
ctx.putImageData( img, 0,0 );
document.body.insertBefore( canvas, document.body.childNodes[0] );
}
ctx.putImageData(img, 0, 0);
}
Mandelbrot( 900,600, -2,1, -1,1, 1000 );
var canvas = document.createElement('canvas');
canvas.width = 900;
canvas.height = 600;
document.body.insertBefore(canvas, document.body.childNodes[0]);
mandelbrot(canvas, -2, 1, -1, 1, 1000);