+ * 创建时间：2018/3/1 + * 项目名称：AndroidNavigationSDK + * + * @author guibao.ggb + * @email guibao.ggb@alibaba-inc.com + *
+ * 类说明：自车位置管理Overlay类 + */ +public class CarOverlay { + + protected static final int CAR_MOVE_ANIMATION_PERIOD = 50; + protected int carMoveAnimationFrameNum = 2; + protected boolean mIsLock = true; + protected IPoint mapAnchorBackup = null; + protected double dXOffStep; + protected double dYOffStep; + protected float dAngleOffStep; + protected int currentFrameIndex; + protected float angleStart = 0; + protected boolean isMoveStarted = false; + protected float newAngle = 0; + protected BitmapDescriptor carDescriptor = null; + protected BitmapDescriptor fourCornersDescriptor = null; + protected Marker carMarker; + protected Marker directionMarker; + protected AMap mAmap = null; + protected TextureMapView mapView; + protected boolean isDirectionVisible = true; + protected LatLng endLatLng = null; + protected Polyline leaderLine = null; + protected final int DISTANCE_OFFSET = 150;// 默认 500 偏差 + + // API 默认 1800 UI 默认 360 + protected int angleModValue = 1800; + + + private ScheduledExecutorService executorService; + + public CarOverlay(Context context, TextureMapView mapView) { + this.mapView = mapView; + + fourCornersDescriptor = BitmapDescriptorFactory.fromBitmap(BitmapFactory + .decodeResource(context.getResources(), + R.drawable.module_small_map_navi_direction)); + + carDescriptor = BitmapDescriptorFactory.fromBitmap(BitmapFactory + .decodeResource(context.getResources(), + R.drawable.module_small_map_view_my_location_logo)); + angleModValue = 1800; + + } + + /** + * 设置自车状态 + * + * @param lock true 锁车 false 非锁车 + */ + public void setLock(boolean lock) { + mIsLock = lock; + if (carMarker == null) { + return; + } + if (mAmap == null) { + return; + } + if (directionMarker == null) { + return; + } + carMarker.setFlat(true); + directionMarker.setGeoPoint(carMarker.getGeoPoint()); + carMarker.setGeoPoint(carMarker.getGeoPoint()); + carMarker.setRotateAngle(carMarker.getRotateAngle()); + if (mIsLock) { + CameraPosition cameraPosition = new CameraPosition.Builder().target(carMarker.getPosition()).bearing(newAngle).tilt(0).zoom(16).build(); + mAmap.moveCamera(CameraUpdateFactory.newCameraPosition(cameraPosition)); + } + } + + public void reset() { + if (carMarker != null) { + carMarker.remove(); + } + if (directionMarker != null) { + directionMarker.remove(); + } + if (leaderLine != null) { + leaderLine.remove(); + } + leaderLine = null; + carMarker = null; + directionMarker = null; + + if (executorService != null) { + if (!executorService.isShutdown()) { + executorService.shutdown(); + } + isMoveStarted = false; + + executorService = null; + } + } + + /** + * 绘制自车 + * + * @param aMap + * @param mLatLng + * @param bearing + */ + public void draw(AMap aMap, LatLng mLatLng, float bearing) { + if (aMap == null || mLatLng == null || carDescriptor == null) { + return; + } + mAmap = aMap; + try { + if (carMarker == null) { + carMarker = aMap.addMarker(new MarkerOptions().anchor(0.5f, 0.5f).setFlat(true).icon(carDescriptor).position(mLatLng)); + } + + if (directionMarker == null) { + directionMarker = aMap.addMarker(new MarkerOptions().anchor(0.5f, 0.5f).setFlat(true).icon(fourCornersDescriptor).position(mLatLng)); + if (isDirectionVisible) { + directionMarker.setVisible(true); + } else { + directionMarker.setVisible(false); + } + } + carMarker.setVisible(true); + newAngle = bearing; + IPoint resultGeoPnt = IPoint.obtain(); + resultGeoPnt = NaviUtil.lonlat2Geo(mLatLng.latitude, mLatLng.longitude, 20); + updateCarPosition(resultGeoPnt); + resultGeoPnt.recycle(); + + } catch (Throwable e) { + e.printStackTrace(); + } + } + + + private void updateCarPosition(IPoint p) { + carMarker.setGeoPoint(p); + carMarker.setFlat(true); + carMarker.setRotateAngle(360 - newAngle); + if (directionMarker != null) { + directionMarker.setGeoPoint(p); + } + + if (mIsLock) { + CameraPosition cameraPosition = new CameraPosition.Builder().target(carMarker.getPosition()).bearing(newAngle).tilt(0).zoom(16).build(); + mAmap.moveCamera(CameraUpdateFactory.changeBearingGeoCenter(newAngle, p)); + } + } + + + public void setEndPoi(LatLng latlng) { + endLatLng = latlng; + } + + /** + * 释放自车资源 + */ + public void destroy() { + if (carMarker != null) { + carMarker.remove(); + carMarker = null; + } + if (directionMarker != null) { + directionMarker.remove(); + directionMarker = null; + } + carDescriptor = null; + + if (executorService != null && !executorService.isShutdown()) { + executorService.shutdown(); + isMoveStarted = false; + + executorService = null; + } + } + + private void calculateCarSmoothMoveOffset(IPoint newCenter, float newAngle) { + if (carMarker == null) { + return; + } + IPoint currentAnchorGeoPoint = carMarker.getGeoPoint(); + if (currentAnchorGeoPoint == null || currentAnchorGeoPoint.x == 0 || currentAnchorGeoPoint.y == 0) { + currentAnchorGeoPoint = newCenter; + } + currentFrameIndex = 0; + mapAnchorBackup = currentAnchorGeoPoint; + dXOffStep = (newCenter.x - currentAnchorGeoPoint.x) / carMoveAnimationFrameNum; + dYOffStep = (newCenter.y - currentAnchorGeoPoint.y) / carMoveAnimationFrameNum; + // 获取当前的旋转角度 + angleStart = carMarker.getRotateAngle(); + boolean isFirst = false; + + if (Float.compare(angleStart, newAngle) == 0) { + isFirst = true; + } else { + angleStart = 360 - angleStart; + } + // 校正旋转角度问题 + float dAngleDelta = newAngle - angleStart; + if (isFirst) { + dAngleDelta = 0; + } + if (dAngleDelta > 180) { + dAngleDelta = dAngleDelta - 360; + } + else if (dAngleDelta < -180) { + dAngleDelta = dAngleDelta + 360; + } + dAngleOffStep = dAngleDelta / carMoveAnimationFrameNum; + isMoveStarted = true; + } + +// protected void startSmoothMoveTimer() { +// if (executorService == null) { +// executorService = new ScheduledThreadPoolExecutor(1, new BasicThreadFactory.Builder().namingPattern("caroverlay-schedule-pool-%d").daemon(true).build()); +// +// executorService.scheduleAtFixedRate(new Runnable() { +// long currentSeconds; +// @Override +// public void run() { +// try{ +// currentSeconds = System.currentTimeMillis(); +// mapSmoothMoveTimerTick(); +// } catch(Throwable e){ +// e.printStackTrace(); +// } +// } +// }, 0, CAR_MOVE_ANIMATION_PERIOD, TimeUnit.MILLISECONDS); +// } +// } + + private void mapSmoothMoveTimerTick() { + if (!isMoveStarted) { + return; + } + if (carMarker == null) { + return; + } + if (mAmap == null) { + return; + } + try { + IPoint p = carMarker.getGeoPoint(); + double newX = 0, newY = 0; + if (currentFrameIndex++ < carMoveAnimationFrameNum) { + newX = mapAnchorBackup.x + dXOffStep * currentFrameIndex; + newY = mapAnchorBackup.y + dYOffStep * currentFrameIndex; + newAngle = angleStart + dAngleOffStep * currentFrameIndex; + newAngle %= angleModValue; + if (newX != 0 || newY != 0) { + p = new IPoint((int)newX, (int)newY); + } + updateCarPosition(p); + } + } catch (Throwable e) { + e.printStackTrace(); + } + } + +}