Image noise: Difference between revisions
Content deleted Content added
No edit summary |
|||
| Line 345: | Line 345: | ||
var frame_count = 0; |
var frame_count = 0; |
||
ctx.font = 'normal 400 24px/2 Unknown Font, sans-serif'; |
ctx.font = 'normal 400 24px/2 Unknown Font, sans-serif'; |
||
var img = ctx.createImageData(w,h); |
|||
function animate() { |
function animate() { |
||
ctx.clearRect(0, 0, w, h); |
|||
ctx.fillStyle = "black"; |
|||
for (var x = 0; x < w; x++) |
for (var x = 0; x < w; x++) |
||
{ |
|||
for (var y = 0; y < h; y++) |
for (var y = 0; y < h; y++) |
||
{ |
|||
var index = 4* (x + w*y); |
|||
var value = (Math.random() > 0.5) ? 255 : 0; |
|||
img.data[index] = value; |
|||
img.data[index+1] = value; |
|||
img.data[index+2] = value; |
|||
img.data[index+3] = 255; |
|||
} |
|||
} |
|||
ctx.putImageData(img,0,0); |
|||
frame_count++; |
frame_count++; |
||
| Line 364: | Line 372: | ||
animate(); |
animate(); |
||
</script> |
</script> |
||
</body> |
</body> |
||