88 lines
3.0 KiB
Haxe
88 lines
3.0 KiB
Haxe
/*
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* Copyright (C)2005-2019 Haxe Foundation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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package haxe.io;
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typedef Float32ArrayData = ArrayBufferView.ArrayBufferViewData;
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abstract Float32Array(Float32ArrayData) {
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public static inline var BYTES_PER_ELEMENT = 4;
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public var length(get, never):Int;
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public var view(get, never):ArrayBufferView;
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public inline function new(elements:Int) {
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this = new ArrayBufferView(elements * BYTES_PER_ELEMENT).getData();
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}
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inline function get_length() {
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return this.byteLength >> 2;
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}
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public inline function get_view():ArrayBufferView {
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return ArrayBufferView.fromData(this);
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}
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@:arrayAccess public inline function get(index:Int):Float {
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return this.bytes.getFloat((index << 2) + this.byteOffset);
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}
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@:arrayAccess public inline function set(index:Int, value:Float):Float {
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if (index >= 0 && index < length) {
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this.bytes.setFloat((index << 2) + this.byteOffset, value);
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return value;
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}
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return 0;
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}
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public inline function sub(begin:Int, ?length:Int):Float32Array {
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return fromData(this.sub(begin << 2, length == null ? null : length << 2));
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}
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public inline function subarray(?begin:Int, ?end:Int):Float32Array {
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return fromData(this.subarray(begin == null ? null : begin << 2, end == null ? null : end << 2));
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}
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public inline function getData():Float32ArrayData {
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return this;
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}
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public static function fromData(d:Float32ArrayData):Float32Array {
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return cast d;
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}
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public static function fromArray(a:Array<Float>, pos = 0, ?length:Int):Float32Array {
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if (length == null)
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length = a.length - pos;
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if (pos < 0 || length < 0 || pos + length > a.length)
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throw Error.OutsideBounds;
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var i = new Float32Array(a.length);
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for (idx in 0...length)
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i[idx] = a[idx + pos];
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return i;
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}
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public static function fromBytes(bytes:haxe.io.Bytes, bytePos = 0, ?length:Int):Float32Array {
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return fromData(ArrayBufferView.fromBytes(bytes, bytePos, (length == null ? (bytes.length - bytePos) >> 2 : length) << 2).getData());
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}
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}
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