Can the methods of Array.prototype be used on Float32 multidimensional arrays in Javascript?

Currently, I am utilizing a Float32Array to store vertex positions within the realm of Three.js. My objective is to generate a new array of vertex positions that begin at a random starting point.

[0...10000].slice( n, n + 100 ) // This piece of code functions properly

positions      = new Float32Array( amount * 3 ) 
randPositions  = positions.slice( n, n + 100 )  // Unfortunately, this line does not work - undefined is not a function

Despite my efforts, an error arises when attempting the aforementioned operation (positions is defined and contains data)? Is there compatibility between Array.prototype methods and Float32Array instances?

javascriptarrays

Answer №1

There are many objects that resemble arrays with a `.length` property and numerically-indexed properties, which can utilize the built-in Array methods. However, you must explicitly invoke them:

randomizedPositions = [].slice.call(positions, startValue, endValue);

This technique retrieves the "slice" method from a temporary Array instance and invokes it using `.call()` to set your "positions" array as the context or `this` within the function.

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