static PointerDataPacket _unpackPointerDataPacket(ByteData packet)
{
const int kStride = 8; // Its an 8 const anyway - Int64List.bytesPerElement;
const int kBytesPerPointerData = _kPointerDataFieldCount * kStride;
int length = packet.lengthInBytes / kBytesPerPointerData;
//assert(length * kBytesPerPointerData == packet.lengthInBytes);
List <PointerData> data = new List <PointerData>(length);
for (int i = 0; i < length; ++i)
{
int offset = i * _kPointerDataFieldCount;
data[i] = new PointerData(
timeStamp: new Duration(microseconds: packet.getInt64(kStride * offset++, (int)_kFakeHostEndian)),
change: (PointerChange)packet.getInt64(kStride * offset++, (int)_kFakeHostEndian),
kind: (PointerDeviceKind)packet.getInt64(kStride * offset++, (int)_kFakeHostEndian),
device: packet.getInt64(kStride * offset++, (int)_kFakeHostEndian),
physicalX: packet.getFloat64(kStride * offset++, (int)_kFakeHostEndian),
physicalY: packet.getFloat64(kStride * offset++, (int)_kFakeHostEndian),
buttons: packet.getInt64(kStride * offset++, (int)_kFakeHostEndian),
obscured: packet.getInt64(kStride * offset++, (int)_kFakeHostEndian) != 0,
pressure: packet.getFloat64(kStride * offset++, (int)_kFakeHostEndian),
pressureMin: packet.getFloat64(kStride * offset++, (int)_kFakeHostEndian),
pressureMax: packet.getFloat64(kStride * offset++, (int)_kFakeHostEndian),
distance: packet.getFloat64(kStride * offset++, (int)_kFakeHostEndian),
distanceMax: packet.getFloat64(kStride * offset++, (int)_kFakeHostEndian),
radiusMajor: packet.getFloat64(kStride * offset++, (int)_kFakeHostEndian),
radiusMinor: packet.getFloat64(kStride * offset++, (int)_kFakeHostEndian),
radiusMin: packet.getFloat64(kStride * offset++, (int)_kFakeHostEndian),
radiusMax: packet.getFloat64(kStride * offset++, (int)_kFakeHostEndian),
orientation: packet.getFloat64(kStride * offset++, (int)_kFakeHostEndian),
tilt: packet.getFloat64(kStride * offset++, (int)_kFakeHostEndian)
);
//assert(offset == (i + 1) * _kPointerDataFieldCount);
}
return(new PointerDataPacket(data: data));
}
