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near final

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ImBenji
2024-03-02 18:07:05 +00:00
parent 67e1cd3530
commit 429eb4ad5f
29 changed files with 7870 additions and 1345 deletions
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35
lib/utils/OrdinanceSurveyUtils.dart Normal file
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@@ -0,0 +1,35 @@
import 'dart:math' as math;
import 'package:proj4dart/proj4dart.dart' as proj4;
import 'package:vector_math/vector_math.dart';
class OSGrid {
static List<double> toLatLong(double northing, double easting) {
final sourceProjection = proj4.Projection.parse('+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 '
'+x_0=400000 +y_0=-100000 +ellps=airy +datum=OSGB36 +units=m +no_defs'); // British National Grid
final destinationProjection = proj4.Projection.WGS84;// WGS84
final point = proj4.Point(x: easting, y: northing);
final transformedPoint = sourceProjection.transform(destinationProjection, point);
return [transformedPoint.y, transformedPoint.x];
}
static Vector2 toNorthingEasting(double latitude, double longitude) {
final sourceProjection = proj4.Projection.WGS84;// WGS84
final destinationProjection = proj4.Projection.parse('+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 '
'+x_0=400000 +y_0=-100000 +ellps=airy +datum=OSGB36 +units=m +no_defs'); // British National Grid
final point = proj4.Point(x: longitude, y: latitude);
final transformedPoint = sourceProjection.transform(destinationProjection, point);
return Vector2(transformedPoint.x, transformedPoint.y);
}
}

96
lib/utils/audio wrapper.dart
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@@ -3,6 +3,11 @@ import 'package:audioplayers/audioplayers.dart' as audioplayers;
import 'package:flutter/foundation.dart';
import 'package:just_audio/just_audio.dart' as justaudio;
enum AudioWrapper_Mode {
Web,
Mobile
}
enum AudioWrapper_State {
Playing,
NotPlaying
@@ -13,6 +18,16 @@ class AudioWrapper {
audioplayers.AudioPlayer _audioPlayer_AudioPlayer = audioplayers.AudioPlayer();
justaudio.AudioPlayer _justAudio_AudioPlayer = justaudio.AudioPlayer();
AudioWrapper_Mode mode = kIsWeb ? AudioWrapper_Mode.Web : AudioWrapper_Mode.Mobile;
AudioWrapper() {
// mode = AudioWrapper_Mode.Web;
print("AudioWrapper mode: $mode");
// mode = AudioWrapper_Mode.Mobile;
}
justaudio.AudioSource _convertSource_JustAudio(AudioWrapperSource source){
if (source is AudioWrapperByteSource){
return _ByteSource(source.bytes);
@@ -33,45 +48,94 @@ class AudioWrapper {
}
}
Future<Duration?> play(AudioWrapperSource source) async {
Duration? duration;
if (kIsWeb) {
Future<void> loadSource(AudioWrapperSource source) async {
if (mode == AudioWrapper_Mode.Web) {
// Use just_audio
justaudio.AudioSource audioSource = _convertSource_JustAudio(source);
duration = await _justAudio_AudioPlayer.setAudioSource(audioSource);
await _justAudio_AudioPlayer.setAudioSource(audioSource);
_justAudio_AudioPlayer.play();
} else {
} else if (mode == AudioWrapper_Mode.Mobile) {
// Use audioplayers
audioplayers.Source audioSource = _convertSource_AudioPlayers(source);
await _audioPlayer_AudioPlayer.play(audioSource);
await _audioPlayer_AudioPlayer.setSource(audioSource);
// await _audioPlayer_AudioPlayer.play(audioSource);
}
}
Future<Duration?> getDuration() async {
if (mode == AudioWrapper_Mode.Web) {
return _justAudio_AudioPlayer.duration;
} else if (mode == AudioWrapper_Mode.Mobile) {
return await _audioPlayer_AudioPlayer.getDuration();
}
}
Future<Duration?> play() async {
Duration? duration;
if (mode == AudioWrapper_Mode.Web) {
_justAudio_AudioPlayer.play();
duration = _justAudio_AudioPlayer.duration;
} else if (mode == AudioWrapper_Mode.Mobile) {
_audioPlayer_AudioPlayer.resume();
duration = await _audioPlayer_AudioPlayer.getDuration();
}
return duration;
}
// Future<Duration?> play(AudioWrapperSource source) async {
//
// Duration? duration;
//
// if (mode == AudioWrapper_Mode.Web) {
// // Use just_audio
//
// justaudio.AudioSource audioSource = _convertSource_JustAudio(source);
//
// duration = await _justAudio_AudioPlayer.setAudioSource(audioSource);
//
// _justAudio_AudioPlayer.play();
//
//
// } else if (mode == AudioWrapper_Mode.Mobile) {
// // Use audioplayers
//
// audioplayers.Source audioSource = _convertSource_AudioPlayers(source);
//
// await _audioPlayer_AudioPlayer.play(audioSource);
//
// duration = await _audioPlayer_AudioPlayer.getDuration();
// }
//
//
//
// return duration;
// }
void stop(){
if (kIsWeb) {
if (mode == AudioWrapper_Mode.Web) {
_justAudio_AudioPlayer.stop();
} else {
try {
_justAudio_AudioPlayer.dispose();
} catch (e) {}
_justAudio_AudioPlayer = justaudio.AudioPlayer();
} else if (mode == AudioWrapper_Mode.Mobile) {
_audioPlayer_AudioPlayer.stop();
try {
_audioPlayer_AudioPlayer.dispose();
} catch (e) {}
_audioPlayer_AudioPlayer = audioplayers.AudioPlayer();
}
}
AudioWrapper_State get state {
if (kIsWeb) {
if (mode == AudioWrapper_Mode.Web) {
if (_justAudio_AudioPlayer.playing){
return AudioWrapper_State.Playing;
} else {

18
lib/utils/delegates.dart
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@@ -11,7 +11,7 @@ class ListenerReceipt<T> {
}
class EventDelegate<T> {
final List<ListenerReceipt<T>> _receipts = [];
final List<ListenerReceipt<T>> _receipts = [];
ListenerReceipt<T> addListener(Function(T) listener) {
final receipt = ListenerReceipt(listener);
@@ -26,14 +26,16 @@ class EventDelegate<T> {
void trigger(T event) {
print("triggering event");
for (var receipt in _receipts) {
print("triggering listener");
try {
receipt.listener(event);
} catch (e) {
print("Error in listener: $e");
removeListener(receipt);
try {
for (var receipt in _receipts) {
print("triggering listener");
try {
receipt.listener(event);
} catch (e) {
}
}
} catch (e) {
print("Error in trigger: $e");
}
}
}