SteeringWheelView:遥控器方向盘，扇形触摸区域识别

SteeringWheelView 执照 Copyright 2018 Deepblue Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHO