com.mapbox.mapboxsdk.maps.widgets.MyLocationView Maven / Gradle / Ivy
package com.mapbox.mapboxsdk.maps.widgets;
import android.animation.ValueAnimator;
import android.content.Context;
import android.graphics.Camera;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PointF;
import android.graphics.PorterDuff;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.location.Location;
import android.os.Bundle;
import android.os.Parcelable;
import android.os.SystemClock;
import android.support.annotation.ColorInt;
import android.support.annotation.FloatRange;
import android.support.annotation.IntRange;
import android.support.annotation.NonNull;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import com.mapbox.mapboxsdk.camera.CameraPosition;
import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
import com.mapbox.mapboxsdk.constants.MyBearingTracking;
import com.mapbox.mapboxsdk.constants.MyLocationTracking;
import com.mapbox.mapboxsdk.geometry.LatLng;
import com.mapbox.mapboxsdk.location.LocationSource;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.Projection;
import com.mapbox.services.android.telemetry.location.LocationEngine;
import com.mapbox.services.android.telemetry.location.LocationEngineListener;
import com.mapbox.services.android.telemetry.location.LocationEnginePriority;
import java.lang.ref.WeakReference;
/**
* UI element overlaid on a map to show the user's location.
*/
public class MyLocationView extends View {
private MyLocationBehavior myLocationBehavior;
private MapboxMap mapboxMap;
private Projection projection;
private float[] projectedCoordinate = new float[2];
private float projectedX;
private float projectedY;
private float contentPaddingX;
private float contentPaddingY;
private LatLng latLng;
private Location location;
private long locationUpdateTimestamp;
private float previousDirection;
private float accuracy;
private Paint accuracyPaint;
private ValueAnimator locationChangeAnimator;
private ValueAnimator accuracyAnimator;
private ValueAnimator directionAnimator;
private ValueAnimator.AnimatorUpdateListener invalidateSelfOnUpdateListener =
new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
invalidate();
}
};
private Drawable foregroundDrawable;
private Drawable foregroundBearingDrawable;
private Drawable backgroundDrawable;
private Rect foregroundBounds;
private Rect backgroundBounds;
private int backgroundOffsetLeft;
private int backgroundOffsetTop;
private int backgroundOffsetRight;
private int backgroundOffsetBottom;
private Matrix matrix;
private Camera camera;
private PointF screenLocation;
// camera vars
private double tilt;
private double bearing;
private float magneticHeading;
// Controls the compass update rate in milliseconds
private static final int COMPASS_UPDATE_RATE_MS = 500;
@MyLocationTracking.Mode
private int myLocationTrackingMode;
@MyBearingTracking.Mode
private int myBearingTrackingMode;
private GpsLocationListener userLocationListener;
private CompassListener compassListener;
public MyLocationView(Context context) {
super(context);
init(context);
}
public MyLocationView(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
public MyLocationView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context);
}
private void init(Context context) {
if (isInEditMode()) {
return;
}
setEnabled(false);
// setup LayoutParams
ViewGroup.LayoutParams lp = new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT);
setLayoutParams(lp);
matrix = new Matrix();
camera = new Camera();
camera.setLocation(0, 0, -1000);
accuracyPaint = new Paint();
myLocationBehavior = new MyLocationBehaviorFactory().getBehavioralModel(MyLocationTracking.TRACKING_NONE);
compassListener = new CompassListener(context);
}
public final void setForegroundDrawables(Drawable defaultDrawable, Drawable bearingDrawable) {
if (defaultDrawable == null) {
return;
}
if (bearingDrawable == null) {
// if user only provided one resource
// use same for bearing mode
bearingDrawable = defaultDrawable.getConstantState().newDrawable();
}
if (backgroundDrawable == null) {
// if the user didn't provide a background resource we will use the foreground resource instead,
// we need to create a new drawable to handle tinting correctly
backgroundDrawable = defaultDrawable.getConstantState().newDrawable();
}
if (defaultDrawable.getIntrinsicWidth() != bearingDrawable.getIntrinsicWidth()
|| defaultDrawable.getIntrinsicHeight() != bearingDrawable.getIntrinsicHeight()) {
throw new RuntimeException("The dimensions from location and bearing drawables should be match");
}
foregroundDrawable = defaultDrawable;
foregroundBearingDrawable = bearingDrawable;
invalidateBounds();
}
public final void setForegroundDrawableTint(@ColorInt int color) {
if (foregroundDrawable != null) {
foregroundDrawable.mutate().setColorFilter(color, PorterDuff.Mode.SRC_IN);
}
if (foregroundBearingDrawable != null) {
foregroundBearingDrawable.mutate().setColorFilter(color, PorterDuff.Mode.SRC_IN);
}
invalidate();
}
public final void setShadowDrawable(Drawable drawable) {
setShadowDrawable(drawable, 0, 0, 0, 0);
}
public final void setShadowDrawable(Drawable drawable, int left, int top, int right, int bottom) {
if (drawable != null) {
backgroundDrawable = drawable;
}
backgroundOffsetLeft = left;
backgroundOffsetTop = top;
backgroundOffsetRight = right;
backgroundOffsetBottom = bottom;
invalidateBounds();
}
public final void setShadowDrawableTint(@ColorInt int color) {
if (backgroundDrawable == null) {
return;
}
backgroundDrawable.mutate().setColorFilter(color, PorterDuff.Mode.SRC_IN);
invalidate();
}
public final void setAccuracyTint(@ColorInt int color) {
int alpha = accuracyPaint.getAlpha();
accuracyPaint.setColor(color);
accuracyPaint.setAlpha(alpha);
invalidate();
}
public final void setAccuracyAlpha(@IntRange(from = 0, to = 255) int alpha) {
accuracyPaint.setAlpha(alpha);
invalidate();
}
private void invalidateBounds() {
if (backgroundDrawable == null || foregroundDrawable == null || foregroundBearingDrawable == null) {
return;
}
int backgroundWidth = backgroundDrawable.getIntrinsicWidth();
int backgroundHeight = backgroundDrawable.getIntrinsicHeight();
int horizontalOffset = backgroundOffsetLeft - backgroundOffsetRight;
int verticalOffset = backgroundOffsetTop - backgroundOffsetBottom;
backgroundBounds = new Rect(-backgroundWidth / 2 + horizontalOffset,
-backgroundHeight / 2 + verticalOffset, backgroundWidth / 2 + horizontalOffset, backgroundHeight / 2
+ verticalOffset);
backgroundDrawable.setBounds(backgroundBounds);
int foregroundWidth = foregroundDrawable.getIntrinsicWidth();
int foregroundHeight = foregroundDrawable.getIntrinsicHeight();
foregroundBounds = new Rect(-foregroundWidth / 2, -foregroundHeight / 2, foregroundWidth / 2, foregroundHeight / 2);
foregroundDrawable.setBounds(foregroundBounds);
foregroundBearingDrawable.setBounds(foregroundBounds);
// invoke a new draw
invalidate();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if (location == null || foregroundBounds == null || backgroundBounds == null || accuracyAnimator == null
|| screenLocation == null) {
// Not ready yet
return;
}
final PointF pointF = screenLocation;
float metersPerPixel = (float) projection.getMetersPerPixelAtLatitude(location.getLatitude());
float accuracyPixels = (Float) accuracyAnimator.getAnimatedValue() / metersPerPixel;
// reset
matrix.reset();
projectedCoordinate[0] = 0;
projectedCoordinate[1] = 0;
// put camera in position
camera.save();
camera.rotate((float) tilt, 0, 0);
camera.getMatrix(matrix);
if (myBearingTrackingMode != MyBearingTracking.NONE && directionAnimator != null) {
matrix.preRotate((Float) directionAnimator.getAnimatedValue());
}
matrix.preTranslate(0, contentPaddingY);
matrix.postTranslate(pointF.x, pointF.y - contentPaddingY);
// concat our matrix on canvas
canvas.concat(matrix);
// calculate focal point
matrix.mapPoints(projectedCoordinate);
projectedX = pointF.x - projectedCoordinate[0];
projectedY = pointF.y - projectedCoordinate[1];
// restore orientation from camera
camera.restore();
// draw circle
canvas.drawCircle(0, 0, accuracyPixels, accuracyPaint);
// draw shadow
if (backgroundDrawable != null) {
backgroundDrawable.draw(canvas);
}
// draw foreground
if (myBearingTrackingMode == MyBearingTracking.NONE || !compassListener.isSensorAvailable()) {
if (foregroundDrawable != null) {
foregroundDrawable.draw(canvas);
}
} else if (foregroundBearingDrawable != null && foregroundBounds != null) {
foregroundBearingDrawable.draw(canvas);
}
}
public void setTilt(@FloatRange(from = 0, to = 60.0f) double tilt) {
this.tilt = tilt;
if (myLocationTrackingMode == MyLocationTracking.TRACKING_FOLLOW) {
mapboxMap.getUiSettings().setFocalPoint(getCenter());
}
invalidate();
}
public void setBearing(double bearing) {
this.bearing = bearing;
if (myLocationTrackingMode == MyLocationTracking.TRACKING_NONE) {
if (myBearingTrackingMode == MyBearingTracking.GPS) {
if (location != null) {
setCompass(location.getBearing() - bearing);
}
} else if (myBearingTrackingMode == MyBearingTracking.COMPASS
&& compassListener.isSensorAvailable()) {
setCompass(magneticHeading - bearing);
}
}
}
public void setCameraPosition(CameraPosition position) {
if (position != null) {
setBearing(position.bearing);
setTilt(position.tilt);
}
}
public void onStart() {
if (myBearingTrackingMode == MyBearingTracking.COMPASS
&& compassListener.isSensorAvailable()) {
compassListener.onResume();
}
if (isEnabled()) {
toggleGps(true);
}
}
public void onStop() {
compassListener.onPause();
toggleGps(false);
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
// cleanup to prevent memory leaks
if (locationChangeAnimator != null) {
locationChangeAnimator.cancel();
locationChangeAnimator = null;
}
if (accuracyAnimator != null) {
accuracyAnimator.cancel();
accuracyAnimator = null;
}
if (directionAnimator != null) {
directionAnimator.cancel();
directionAnimator = null;
}
if (userLocationListener != null) {
LocationSource.getLocationEngine(getContext()).removeLocationEngineListener(userLocationListener);
userLocationListener = null;
}
}
public void update() {
if (isEnabled()) {
myLocationBehavior.invalidate();
} else {
setVisibility(View.INVISIBLE);
}
}
// TODO refactor MapboxMap out
public void setMapboxMap(MapboxMap mapboxMap) {
this.mapboxMap = mapboxMap;
this.projection = mapboxMap.getProjection();
}
@Override
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
setVisibility(enabled ? View.VISIBLE : View.INVISIBLE);
toggleGps(enabled);
}
@Override
protected Parcelable onSaveInstanceState() {
Bundle bundle = new Bundle();
bundle.putParcelable("superState", super.onSaveInstanceState());
bundle.putDouble("tilt", tilt);
return bundle;
}
@Override
public void onRestoreInstanceState(Parcelable state) {
if (state instanceof Bundle) {
Bundle bundle = (Bundle) state;
tilt = bundle.getDouble("tilt");
state = bundle.getParcelable("superState");
}
super.onRestoreInstanceState(state);
}
/**
* Enabled / Disable GPS location updates along with updating the UI
*
* @param enableGps true if GPS is to be enabled, false if GPS is to be disabled
*/
private void toggleGps(boolean enableGps) {
LocationEngine locationEngine = LocationSource.getLocationEngine(getContext());
if (enableGps) {
// Set an initial location if one available
Location lastLocation = locationEngine.getLastLocation();
if (lastLocation != null) {
setLocation(lastLocation);
}
if (userLocationListener == null) {
userLocationListener = new GpsLocationListener(this);
}
locationEngine.addLocationEngineListener(userLocationListener);
locationEngine.activate();
} else {
// Disable location and user dot
location = null;
locationEngine.removeLocationEngineListener(userLocationListener);
locationEngine.deactivate();
}
locationEngine.setPriority(LocationEnginePriority.HIGH_ACCURACY);
}
public Location getLocation() {
return location;
}
public void setLocation(Location location) {
if (location == null) {
this.location = null;
return;
}
this.location = location;
myLocationBehavior.updateLatLng(location);
}
public void setMyBearingTrackingMode(@MyBearingTracking.Mode int myBearingTrackingMode) {
this.myBearingTrackingMode = myBearingTrackingMode;
if (myBearingTrackingMode == MyBearingTracking.COMPASS
&& compassListener.isSensorAvailable()) {
compassListener.onResume();
} else {
compassListener.onPause();
if (myLocationTrackingMode == MyLocationTracking.TRACKING_FOLLOW) {
// always face north
setCompass(0);
} else {
myLocationBehavior.invalidate();
}
}
invalidate();
}
public void setMyLocationTrackingMode(@MyLocationTracking.Mode int myLocationTrackingMode) {
MyLocationBehaviorFactory factory = new MyLocationBehaviorFactory();
myLocationBehavior = factory.getBehavioralModel(myLocationTrackingMode);
if (location != null) {
if (myLocationTrackingMode == MyLocationTracking.TRACKING_FOLLOW) {
// center map directly
mapboxMap.getTrackingSettings().setDismissTrackingModeForCameraPositionChange(false);
mapboxMap.easeCamera(CameraUpdateFactory.newLatLng(new LatLng(location)), 0, false /*linear interpolator*/,
new MapboxMap.CancelableCallback() {
@Override
public void onCancel() {
}
@Override
public void onFinish() {
mapboxMap.getTrackingSettings().setDismissTrackingModeForCameraPositionChange(true);
}
});
} else {
// do not use interpolated location from tracking mode
latLng = null;
}
myLocationBehavior.updateLatLng(location);
}
this.myLocationTrackingMode = myLocationTrackingMode;
invalidate();
}
@MyLocationTracking.Mode
public int getMyLocationTrackingMode() {
return myLocationTrackingMode;
}
@MyBearingTracking.Mode
public int getMyBearingTrackingMode() {
return myBearingTrackingMode;
}
private void setCompass(double bearing) {
setCompass(bearing, 0 /* no animation */);
}
private void setCompass(double bearing, long duration) {
float oldDir = previousDirection;
if (directionAnimator != null) {
oldDir = (Float) directionAnimator.getAnimatedValue();
directionAnimator.end();
directionAnimator = null;
}
float newDir = (float) bearing;
float diff = oldDir - newDir;
if (diff > 180.0f) {
newDir += 360.0f;
} else if (diff < -180.0f) {
newDir -= 360.f;
}
previousDirection = newDir;
directionAnimator = ValueAnimator.ofFloat(oldDir, newDir);
directionAnimator.setDuration(duration);
directionAnimator.addUpdateListener(invalidateSelfOnUpdateListener);
directionAnimator.start();
}
public PointF getCenter() {
return new PointF(getCenterX(), getCenterY());
}
private float getCenterX() {
return (getX() + getMeasuredWidth()) / 2 + contentPaddingX - projectedX;
}
private float getCenterY() {
return (getY() + getMeasuredHeight()) / 2 + contentPaddingY - projectedY;
}
public void setContentPadding(int[] padding) {
contentPaddingX = (padding[0] - padding[2]) / 2;
contentPaddingY = (padding[1] - padding[3]) / 2;
}
private static class GpsLocationListener implements LocationEngineListener {
private WeakReference userLocationView;
GpsLocationListener(MyLocationView myLocationView) {
userLocationView = new WeakReference<>(myLocationView);
}
@Override
public void onConnected() {
MyLocationView locationView = userLocationView.get();
if (locationView != null) {
LocationEngine locationSource = LocationSource.getLocationEngine(locationView.getContext());
Location location = locationSource.getLastLocation();
locationView.setLocation(location);
locationSource.requestLocationUpdates();
}
}
/**
* Callback method for receiving location updates from LocationServices.
*
* @param location The new Location data
*/
@Override
public void onLocationChanged(Location location) {
MyLocationView locationView = userLocationView.get();
if (locationView != null) {
locationView.setLocation(location);
}
}
}
private class CompassListener implements SensorEventListener {
private final SensorManager sensorManager;
private Sensor rotationVectorSensor;
float[] matrix = new float[9];
float[] orientation = new float[3];
// Compass data
private long compassUpdateNextTimestamp = 0;
CompassListener(Context context) {
sensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
rotationVectorSensor = sensorManager.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR);
}
public void onResume() {
sensorManager.registerListener(this, rotationVectorSensor, SensorManager.SENSOR_DELAY_GAME);
}
public void onPause() {
sensorManager.unregisterListener(this, rotationVectorSensor);
}
public boolean isSensorAvailable() {
return rotationVectorSensor != null;
}
@Override
public void onSensorChanged(SensorEvent event) {
// check when the last time the compass was updated, return if too soon.
long currentTime = SystemClock.elapsedRealtime();
if (currentTime < compassUpdateNextTimestamp) {
return;
}
if (event.sensor.getType() == Sensor.TYPE_ROTATION_VECTOR) {
// calculate the rotation matrix
SensorManager.getRotationMatrixFromVector(matrix, event.values);
SensorManager.getOrientation(matrix, orientation);
magneticHeading = (float) Math.toDegrees(SensorManager.getOrientation(matrix, orientation)[0]);
if (myLocationTrackingMode == MyLocationTracking.TRACKING_FOLLOW) {
// Change the user location view orientation to reflect the device orientation
rotateCamera(magneticHeading);
setCompass(0, COMPASS_UPDATE_RATE_MS);
} else {
// Change compass direction
setCompass(magneticHeading - bearing, COMPASS_UPDATE_RATE_MS);
}
compassUpdateNextTimestamp = currentTime + COMPASS_UPDATE_RATE_MS;
}
}
private void rotateCamera(float rotation) {
CameraPosition.Builder builder = new CameraPosition.Builder();
builder.bearing(rotation);
mapboxMap.getTrackingSettings().setDismissTrackingModeForCameraPositionChange(false);
mapboxMap.easeCamera(CameraUpdateFactory.newCameraPosition(builder.build()), COMPASS_UPDATE_RATE_MS,
false /*linear interpolator*/, new MapboxMap.CancelableCallback() {
@Override
public void onCancel() {
}
@Override
public void onFinish() {
mapboxMap.getTrackingSettings().setDismissTrackingModeForCameraPositionChange(true);
}
});
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
}
private class MarkerCoordinateAnimatorListener implements ValueAnimator.AnimatorUpdateListener {
private MyLocationBehavior behavior;
private double fromLat;
private double fromLng;
private double toLat;
private double toLng;
private MarkerCoordinateAnimatorListener(MyLocationBehavior myLocationBehavior, LatLng from, LatLng to) {
behavior = myLocationBehavior;
fromLat = from.getLatitude();
fromLng = from.getLongitude();
toLat = to.getLatitude();
toLng = to.getLongitude();
}
@Override
public void onAnimationUpdate(ValueAnimator animation) {
float frac = animation.getAnimatedFraction();
double latitude = fromLat + (toLat - fromLat) * frac;
double longitude = fromLng + (toLng - fromLng) * frac;
behavior.updateLatLng(latitude, longitude);
update();
}
}
private class MyLocationBehaviorFactory {
MyLocationBehavior getBehavioralModel(@MyLocationTracking.Mode int mode) {
if (mode == MyLocationTracking.TRACKING_NONE) {
return new MyLocationShowBehavior();
} else {
return new MyLocationTrackingBehavior();
}
}
}
private abstract class MyLocationBehavior {
void updateLatLng(@NonNull Location newLocation) {
location = newLocation;
}
void updateLatLng(double lat, double lon) {
if (latLng != null) {
latLng.setLatitude(lat);
latLng.setLongitude(lon);
}
}
void updateAccuracy(@NonNull Location location) {
if (accuracyAnimator != null && accuracyAnimator.isRunning()) {
// use current accuracy as a starting point
accuracy = (Float) accuracyAnimator.getAnimatedValue();
accuracyAnimator.end();
}
accuracyAnimator = ValueAnimator.ofFloat(accuracy, location.getAccuracy());
accuracyAnimator.setDuration(750);
accuracyAnimator.start();
accuracy = location.getAccuracy();
}
abstract void invalidate();
}
private class MyLocationTrackingBehavior extends MyLocationBehavior {
@Override
void updateLatLng(@NonNull Location location) {
super.updateLatLng(location);
if (latLng == null) {
// first location fix
latLng = new LatLng(location);
locationUpdateTimestamp = SystemClock.elapsedRealtime();
}
// updateLatLng timestamp
float previousUpdateTimeStamp = locationUpdateTimestamp;
locationUpdateTimestamp = SystemClock.elapsedRealtime();
// calculate animation duration
float animationDuration;
if (previousUpdateTimeStamp == 0) {
animationDuration = 0;
} else {
animationDuration = (locationUpdateTimestamp - previousUpdateTimeStamp) * 1.1f
/*make animation slightly longer*/;
}
// calculate interpolated location
latLng = new LatLng(location);
CameraPosition.Builder builder = new CameraPosition.Builder().target(latLng);
// add direction
if (myBearingTrackingMode == MyBearingTracking.GPS) {
if (location.hasBearing()) {
builder.bearing(location.getBearing());
}
setCompass(0, COMPASS_UPDATE_RATE_MS);
}
// accuracy
updateAccuracy(location);
mapboxMap.getTrackingSettings().setDismissTrackingModeForCameraPositionChange(false);
// ease to new camera position with a linear interpolator
mapboxMap.easeCamera(CameraUpdateFactory.newCameraPosition(builder.build()), (int) animationDuration,
false /*linear interpolator*/, new MapboxMap.CancelableCallback() {
@Override
public void onCancel() {
}
@Override
public void onFinish() {
mapboxMap.getTrackingSettings().setDismissTrackingModeForCameraPositionChange(true);
}
});
}
@Override
void invalidate() {
int[] mapPadding = mapboxMap.getPadding();
float x = (getWidth() + mapPadding[0] - mapPadding[2]) / 2 + contentPaddingX;
float y = (getHeight() - mapPadding[3] + mapPadding[1]) / 2 + contentPaddingY;
screenLocation = new PointF(x, y);
MyLocationView.this.invalidate();
}
}
private class MyLocationShowBehavior extends MyLocationBehavior {
@Override
void updateLatLng(@NonNull final Location location) {
super.updateLatLng(location);
if (latLng == null) {
// first location update
latLng = new LatLng(location);
locationUpdateTimestamp = SystemClock.elapsedRealtime();
}
// update LatLng location
LatLng newLocation = new LatLng(location);
// update LatLng accuracy
updateAccuracy(location);
// calculate updateLatLng time + add some extra offset to improve animation
long previousUpdateTimeStamp = locationUpdateTimestamp;
locationUpdateTimestamp = SystemClock.elapsedRealtime();
long locationUpdateDuration = (long) ((locationUpdateTimestamp - previousUpdateTimeStamp) * 1.2f);
// animate changes
if (locationChangeAnimator != null) {
locationChangeAnimator.end();
locationChangeAnimator = null;
}
locationChangeAnimator = ValueAnimator.ofFloat(0.0f, 1.0f);
locationChangeAnimator.setDuration(locationUpdateDuration);
locationChangeAnimator.addUpdateListener(new MarkerCoordinateAnimatorListener(this,
latLng, newLocation
));
locationChangeAnimator.start();
latLng = newLocation;
}
@Override
void invalidate() {
if (latLng != null) {
screenLocation = projection.toScreenLocation(latLng);
}
MyLocationView.this.invalidate();
}
}
}
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