You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
1.3 KiB
92 lines
1.3 KiB
2 years ago
|
|
||
|
|
( function () {
|
||
|
|
|
||
|
|
/* Deterministic random */
|
||
|
|
|
||
|
|
window.Math._random = window.Math.random;
|
||
|
|
|
||
|
|
let seed = Math.PI / 4;
|
||
|
|
window.Math.random = function () {
|
||
|
|
|
||
|
|
const x = Math.sin( seed ++ ) * 10000;
|
||
|
|
return x - Math.floor( x );
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* Deterministic timer */
|
||
|
|
|
||
|
|
window.performance._now = performance.now;
|
||
|
|
|
||
|
|
let frameId = 0;
|
||
|
|
const now = () => frameId * 16;
|
||
|
|
window.Date.now = now;
|
||
|
|
window.Date.prototype.getTime = now;
|
||
|
|
window.performance.now = now;
|
||
|
|
|
||
|
|
|
||
|
|
/* Deterministic RAF */
|
||
|
|
|
||
|
|
const RAF = window.requestAnimationFrame;
|
||
|
|
window._renderStarted = false;
|
||
|
|
window._renderFinished = false;
|
||
|
|
|
||
|
|
const maxFrameId = 2;
|
||
|
|
window.requestAnimationFrame = function ( cb ) {
|
||
|
|
|
||
|
|
if ( ! _renderStarted ) {
|
||
|
|
|
||
|
|
setTimeout( function () {
|
||
|
|
|
||
|
|
requestAnimationFrame( cb );
|
||
|
|
|
||
|
|
}, 50 );
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
RAF( function () {
|
||
|
|
|
||
|
|
if ( frameId ++ < maxFrameId ) {
|
||
|
|
|
||
|
|
cb( now() );
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
_renderFinished = true;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
} );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* Semi-determitistic video */
|
||
|
|
|
||
|
|
const play = HTMLVideoElement.prototype.play;
|
||
|
|
|
||
|
|
HTMLVideoElement.prototype.play = async function () {
|
||
|
|
|
||
|
|
play.call( this );
|
||
|
|
this.addEventListener( 'timeupdate', () => this.pause() );
|
||
|
|
|
||
|
|
function renew() {
|
||
|
|
|
||
|
|
this.load();
|
||
|
|
play.call( this );
|
||
|
|
RAF( renew );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
RAF( renew );
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Additional variable for ~5 examples */
|
||
|
|
|
||
|
|
window.TESTING = true;
|
||
|
|
|
||
|
|
}() );
|