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+/*
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+ * Copyright (C)2005-2014 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 js.html.compat;
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+
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+@:keep
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+class Float32Array {
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+
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+ static var BYTES_PER_ELEMENT = 4;
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+
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+ static function _new( ?arg1 : Dynamic, ?offset : Int, ?length : Int ) : Dynamic {
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+ var arr : Array<Float>;
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+ if( untyped __typeof__(arg1) == 'number' ) {
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+ arr = new Array();
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+ for( i in 0...arg1 )
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+ arr[i] = 0;
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+ untyped {
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+ arr.byteLength = arr.length << 2;
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+ arr.byteOffset = 0;
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+ arr.buffer = new ArrayBuffer([for( i in 0...arr.length << 2 ) 0]); // no sync
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+ }
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+ } else if( Std.is(arg1,ArrayBuffer) ) {
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+ var buffer : ArrayBuffer = arg1;
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+ if( offset == null ) offset = 0;
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+ if( length == null ) length = (buffer.byteLength - offset) >> 2;
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+ arr = [];
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+ // decode buffer
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+ for( i in 0...length ) {
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+ var val = untyped buffer.a[offset++] | (buffer.a[offset++] << 8) | (buffer.a[offset++] << 16) | (buffer.a[offset++] << 24);
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+ arr.push(haxe.io.FPHelper.i32ToFloat(val));
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+ }
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+ untyped {
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+ arr.byteLength = arr.length<<2;
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+ arr.byteOffset = offset;
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+ arr.buffer = buffer;
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+ }
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+ } else if( Std.is(arg1, Array) ) {
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+ arr = (arg1 : Array<Float>).copy();
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+ // loss of memory sync between buffer and array
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+ var buffer = [];
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+ for( f in arr ) {
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+ var i = haxe.io.FPHelper.floatToI32(f);
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+ buffer.push(i&0xFF);
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+ buffer.push((i>>8)&0xFF);
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+ buffer.push((i>>16)&0xFF);
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+ buffer.push(i>>>24);
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+ }
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+ untyped {
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+ arr.byteLength = arr.length << 2;
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+ arr.byteOffset = 0;
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+ arr.buffer = new ArrayBuffer(buffer);
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+ }
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+ } else
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+ throw "TODO "+arg1;
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+ untyped {
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+ arr.subarray = _subarray;
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+ arr.set = _set;
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+ }
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+ return arr;
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+ }
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+
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+ static function _set( ?arg : Dynamic, ?offset : Int ) {
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+ var t : Dynamic = untyped __js__("this");
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+ if( Std.is(arg.buffer,ArrayBuffer) ) {
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+ var a : Array<Int> = arg;
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+ if( arg.byteLength + offset > t.byteLength )
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+ throw "set() outside of range";
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+ for( i in 0...arg.byteLength )
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+ t[i + offset] = a[i];
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+ } else if( Std.is(arg,Array) ) {
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+ var a : Array<Int> = arg;
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+ if( a.length + offset > t.byteLength )
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+ throw "set() outside of range";
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+ for( i in 0...a.length )
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+ t[i + offset] = a[i];
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+ } else
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+ throw "TODO";
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+ }
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+
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+ static function _subarray( start : Int, ?end : Int ) {
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+ var t : Dynamic = untyped __js__("this");
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+ var a = _new(t.slice(start,end));
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+ a.byteOffset = start * 4;
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+ return a;
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+ }
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+
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+ static function __init__() untyped {
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+ var Float32Array = __js__('typeof(window) != "undefined" && window.Float32Array') || (__js__('typeof(global) != "undefined" && global.Float32Array')) || _new;
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+ }
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+
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+}
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