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92 lines
1.5 KiB
JavaScript
92 lines
1.5 KiB
JavaScript
2 years ago
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function arrayMin( array ) {
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if ( array.length === 0 ) return Infinity;
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let min = array[ 0 ];
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for ( let i = 1, l = array.length; i < l; ++ i ) {
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if ( array[ i ] < min ) min = array[ i ];
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}
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return min;
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}
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function arrayMax( array ) {
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if ( array.length === 0 ) return - Infinity;
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let max = array[ 0 ];
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for ( let i = 1, l = array.length; i < l; ++ i ) {
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if ( array[ i ] > max ) max = array[ i ];
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}
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return max;
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}
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function arrayNeedsUint32( array ) {
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// assumes larger values usually on last
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for ( let i = array.length - 1; i >= 0; -- i ) {
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if ( array[ i ] >= 65535 ) return true; // account for PRIMITIVE_RESTART_FIXED_INDEX, #24565
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}
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return false;
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}
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const TYPED_ARRAYS = {
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Int8Array: Int8Array,
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Uint8Array: Uint8Array,
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Uint8ClampedArray: Uint8ClampedArray,
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Int16Array: Int16Array,
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Uint16Array: Uint16Array,
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Int32Array: Int32Array,
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Uint32Array: Uint32Array,
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Float32Array: Float32Array,
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Float64Array: Float64Array
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};
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function getTypedArray( type, buffer ) {
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return new TYPED_ARRAYS[ type ]( buffer );
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}
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function createElementNS( name ) {
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return document.createElementNS( 'http://www.w3.org/1999/xhtml', name );
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}
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function createCanvasElement() {
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const canvas = createElementNS( 'canvas' );
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canvas.style.display = 'block';
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return canvas;
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}
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const _cache = {};
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function warnOnce( message ) {
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if ( message in _cache ) return;
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_cache[ message ] = true;
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console.warn( message );
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}
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export { arrayMin, arrayMax, arrayNeedsUint32, getTypedArray, createElementNS, createCanvasElement, warnOnce };
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