A pooled [Array] of [Vector3]. An [Array] specifically designed to hold [Vector3]. Optimized for memory usage, does not fragment the memory. Note that this type is passed by value and not by reference. Construct a new [code]PoolVector3Array[/code]. Optionally, you can pass in a generic [Array] that will be converted. Append an element at the end of the array (alias of [method push_back]). Append a [code]PoolVector3Array[/code] at the end of this array. Insert a new element at a given position in the array. The position must be valid, or at the end of the array ([code]idx == size()[/code]). Reverse the order of the elements in the array. Insert a [Vector3] at the end. Remove an element from the array by index. Set the size of the array. If the array is grown reserve elements at the end of the array. If the array is shrunk truncate the array to the new size. Change the [Vector3] at the given index. Returns the size of the array.