/
StreetViewPanoramaNavigationDemoActivity.java
executable file
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/
StreetViewPanoramaNavigationDemoActivity.java
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// Copyright 2020 Google LLC
//
// 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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.example.mapdemo;
import com.google.android.gms.maps.OnStreetViewPanoramaReadyCallback;
import com.google.android.gms.maps.StreetViewPanorama;
import com.google.android.gms.maps.SupportStreetViewPanoramaFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.StreetViewPanoramaCamera;
import com.google.android.gms.maps.model.StreetViewPanoramaLink;
import com.google.android.gms.maps.model.StreetViewPanoramaLocation;
import android.os.Bundle;
import android.view.View;
import android.widget.SeekBar;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
/**
* This shows how to create an activity with access to all the options in Panorama
* which can be adjusted dynamically
*/
public class StreetViewPanoramaNavigationDemoActivity extends AppCompatActivity {
// George St, Sydney
private static final LatLng SYDNEY = new LatLng(-33.87365, 151.20689);
// Cole St, San Fran
private static final LatLng SAN_FRAN = new LatLng(37.769263, -122.450727);
// Santorini, Greece
private static final String SANTORINI = "WddsUw1geEoAAAQIt9RnsQ";
// LatLng with no panorama
private static final LatLng INVALID = new LatLng(-45.125783, 151.276417);
/**
* The amount in degrees by which to scroll the camera
*/
private static final int PAN_BY_DEG = 30;
private static final float ZOOM_BY = 0.5f;
private StreetViewPanorama mStreetViewPanorama;
private SeekBar mCustomDurationBar;
@Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.street_view_panorama_navigation_demo);
SupportStreetViewPanoramaFragment streetViewPanoramaFragment =
(SupportStreetViewPanoramaFragment)
getSupportFragmentManager().findFragmentById(R.id.streetviewpanorama);
streetViewPanoramaFragment.getStreetViewPanoramaAsync(
new OnStreetViewPanoramaReadyCallback() {
@Override
public void onStreetViewPanoramaReady(StreetViewPanorama panorama) {
mStreetViewPanorama = panorama;
// Only set the panorama to SYDNEY on startup (when no panoramas have been
// loaded which is when the savedInstanceState is null).
if (savedInstanceState == null) {
mStreetViewPanorama.setPosition(SYDNEY);
}
}
});
mCustomDurationBar = (SeekBar) findViewById(R.id.duration_bar);
}
/**
* When the panorama is not ready the PanoramaView cannot be used. This should be called on
* all entry points that call methods on the Panorama API.
*/
private boolean checkReady() {
if (mStreetViewPanorama == null) {
Toast.makeText(this, R.string.panorama_not_ready, Toast.LENGTH_SHORT).show();
return false;
}
return true;
}
/**
* Called when the Go To San Fran button is clicked.
*/
public void onGoToSanFran(View view) {
if (!checkReady()) {
return;
}
mStreetViewPanorama.setPosition(SAN_FRAN, 30);
}
/**
* Called when the Animate To Sydney button is clicked.
*/
public void onGoToSydney(View view) {
if (!checkReady()) {
return;
}
mStreetViewPanorama.setPosition(SYDNEY);
}
/**
* Called when the Animate To Santorini button is clicked.
*/
public void onGoToSantorini(View view) {
if (!checkReady()) {
return;
}
mStreetViewPanorama.setPosition(SANTORINI);
}
/**
* Called when the Animate To Invalid button is clicked.
*/
public void onGoToInvalid(View view) {
if (!checkReady()) {
return;
}
mStreetViewPanorama.setPosition(INVALID);
}
public void onZoomIn(View view) {
if (!checkReady()) {
return;
}
mStreetViewPanorama.animateTo(
new StreetViewPanoramaCamera.Builder().zoom(
mStreetViewPanorama.getPanoramaCamera().zoom + ZOOM_BY)
.tilt(mStreetViewPanorama.getPanoramaCamera().tilt)
.bearing(mStreetViewPanorama.getPanoramaCamera().bearing)
.build(), getDuration());
}
public void onZoomOut(View view) {
if (!checkReady()) {
return;
}
mStreetViewPanorama.animateTo(
new StreetViewPanoramaCamera.Builder().zoom(
mStreetViewPanorama.getPanoramaCamera().zoom - ZOOM_BY)
.tilt(mStreetViewPanorama.getPanoramaCamera().tilt)
.bearing(mStreetViewPanorama.getPanoramaCamera().bearing)
.build(), getDuration());
}
public void onPanLeft(View view) {
if (!checkReady()) {
return;
}
mStreetViewPanorama.animateTo(
new StreetViewPanoramaCamera.Builder().zoom(
mStreetViewPanorama.getPanoramaCamera().zoom)
.tilt(mStreetViewPanorama.getPanoramaCamera().tilt)
.bearing(mStreetViewPanorama.getPanoramaCamera().bearing - PAN_BY_DEG)
.build(), getDuration());
}
public void onPanRight(View view) {
if (!checkReady()) {
return;
}
mStreetViewPanorama.animateTo(
new StreetViewPanoramaCamera.Builder().zoom(
mStreetViewPanorama.getPanoramaCamera().zoom)
.tilt(mStreetViewPanorama.getPanoramaCamera().tilt)
.bearing(mStreetViewPanorama.getPanoramaCamera().bearing + PAN_BY_DEG)
.build(), getDuration());
}
public void onPanUp(View view) {
if (!checkReady()) {
return;
}
float currentTilt = mStreetViewPanorama.getPanoramaCamera().tilt;
float newTilt = currentTilt + PAN_BY_DEG;
newTilt = (newTilt > 90) ? 90 : newTilt;
mStreetViewPanorama.animateTo(
new StreetViewPanoramaCamera.Builder()
.zoom(mStreetViewPanorama.getPanoramaCamera().zoom)
.tilt(newTilt)
.bearing(mStreetViewPanorama.getPanoramaCamera().bearing)
.build(), getDuration());
}
public void onPanDown(View view) {
if (!checkReady()) {
return;
}
float currentTilt = mStreetViewPanorama.getPanoramaCamera().tilt;
float newTilt = currentTilt - PAN_BY_DEG;
newTilt = (newTilt < -90) ? -90 : newTilt;
mStreetViewPanorama.animateTo(
new StreetViewPanoramaCamera.Builder()
.zoom(mStreetViewPanorama.getPanoramaCamera().zoom)
.tilt(newTilt)
.bearing(mStreetViewPanorama.getPanoramaCamera().bearing)
.build(), getDuration());
}
public void onRequestPosition(View view) {
if (!checkReady()) {
return;
}
if (mStreetViewPanorama.getLocation() != null) {
Toast.makeText(view.getContext(), mStreetViewPanorama.getLocation().position.toString(),
Toast.LENGTH_SHORT).show();
}
}
public void onMovePosition(View view) {
StreetViewPanoramaLocation location = mStreetViewPanorama.getLocation();
StreetViewPanoramaCamera camera = mStreetViewPanorama.getPanoramaCamera();
if (location != null && location.links != null) {
StreetViewPanoramaLink link = findClosestLinkToBearing(location.links, camera.bearing);
mStreetViewPanorama.setPosition(link.panoId);
}
}
public static StreetViewPanoramaLink findClosestLinkToBearing(StreetViewPanoramaLink[] links,
float bearing) {
float minBearingDiff = 360;
StreetViewPanoramaLink closestLink = links[0];
for (StreetViewPanoramaLink link : links) {
if (minBearingDiff > findNormalizedDifference(bearing, link.bearing)) {
minBearingDiff = findNormalizedDifference(bearing, link.bearing);
closestLink = link;
}
}
return closestLink;
}
// Find the difference between angle a and b as a value between 0 and 180
public static float findNormalizedDifference(float a, float b) {
float diff = a - b;
float normalizedDiff = diff - (float) (360 * Math.floor(diff / 360.0f));
return (normalizedDiff < 180.0f) ? normalizedDiff : 360.0f - normalizedDiff;
}
private long getDuration() {
return mCustomDurationBar.getProgress();
}
}