Fabio/aves_panorama
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support animated images

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This commit is contained in:
Mark Hu 2020-12-30 15:15:34 +08:00
parent 39994ab244
commit 135ac1deeb
1 changed files with 29 additions and 30 deletions
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59
lib/panorama.dart
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@ -105,6 +105,7 @@ class Panorama extends StatefulWidget {
class _PanoramaState extends State<Panorama> with SingleTickerProviderStateMixin {
Scene scene;
Object surface;
double latitude;
double longitude;
double latitudeDelta = 0;
@ -122,6 +123,7 @@ class _PanoramaState extends State<Panorama> with SingleTickerProviderStateMixin
StreamSubscription _screenOrientSubscription;
StreamController<Null> _streamController;
Stream<Null> _stream;
ImageStream _imageStream;
void _handleScaleStart(ScaleStartDetails details) {
_lastFocalPoint = details.localFocalPoint;
@ -241,20 +243,34 @@ class _PanoramaState extends State<Panorama> with SingleTickerProviderStateMixin
}
}
void _updateTexture(ImageInfo imageInfo, bool synchronousCall) {
surface.mesh.texture = imageInfo.image;
surface.mesh.textureRect = Rect.fromLTWH(0, 0, imageInfo.image.width.toDouble(), imageInfo.image.height.toDouble());
scene.texture = imageInfo.image;
scene.update();
}
void _loadTexture(ImageProvider provider) {
if (provider == null) return;
_imageStream?.removeListener(ImageStreamListener(_updateTexture));
_imageStream = provider.resolve(ImageConfiguration());
ImageStreamListener listener = ImageStreamListener(_updateTexture);
_imageStream.addListener(listener);
}
void _onSceneCreated(Scene scene) {
this.scene = scene;
scene.camera.near = 1.0;
scene.camera.far = _radius + 1.0;
scene.camera.fov = 75;
scene.camera.zoom = widget.zoom;
scene.camera.position.setFrom(Vector3(0, 0, 0.1));
if (widget.child != null) {
loadImageFromProvider(widget.child.image).then((ui.Image image) {
final Mesh mesh = generateSphereMesh(radius: _radius, latSegments: widget.latSegments, lonSegments: widget.lonSegments, texture: image);
scene.world.add(Object(name: 'surface', mesh: mesh, backfaceCulling: false));
scene.texture = image;
scene.camera.near = 1.0;
scene.camera.far = _radius + 1.0;
scene.camera.fov = 75;
scene.camera.zoom = widget.zoom;
scene.camera.position.setFrom(Vector3(0, 0, 0.1));
_updateView();
});
_loadTexture(widget.child.image);
final Mesh mesh = generateSphereMesh(radius: _radius, latSegments: widget.latSegments, lonSegments: widget.lonSegments);
surface = Object(name: 'surface', mesh: mesh, backfaceCulling: false);
scene.world.add(surface);
WidgetsBinding.instance.addPostFrameCallback((_) => _updateView());
}
}
@ -318,6 +334,7 @@ class _PanoramaState extends State<Panorama> with SingleTickerProviderStateMixin
@override
void dispose() {
_imageStream?.removeListener(ImageStreamListener(_updateTexture));
_orientationSubscription?.cancel();
_screenOrientSubscription?.cancel();
_controller.dispose();
@ -328,17 +345,12 @@ class _PanoramaState extends State<Panorama> with SingleTickerProviderStateMixin
@override
void didUpdateWidget(Panorama oldWidget) {
super.didUpdateWidget(oldWidget);
final Object surface = scene.world.find(RegExp('surface'));
if (surface == null) return;
if (widget.latSegments != oldWidget.latSegments || widget.lonSegments != oldWidget.lonSegments) {
surface.mesh = generateSphereMesh(radius: _radius, latSegments: widget.latSegments, lonSegments: widget.lonSegments, texture: surface.mesh.texture);
}
if (widget.child?.image != oldWidget.child?.image) {
loadImageFromProvider(widget.child.image).then((ui.Image image) {
surface.mesh.texture = image;
surface.mesh.textureRect = Rect.fromLTWH(0, 0, image.width.toDouble(), image.height.toDouble());
scene.texture = image;
});
_loadTexture(widget.child?.image);
}
if (widget.sensorControl != oldWidget.sensorControl) {
_updateSensorControl();
@ -434,19 +446,6 @@ Mesh generateSphereMesh({num radius = 1.0, int latSegments = 16, int lonSegments
return mesh;
}
/// Get ui.Image from ImageProvider
Future<ui.Image> loadImageFromProvider(ImageProvider provider) async {
final Completer<ui.Image> completer = Completer<ui.Image>();
final ImageStream imageStream = provider.resolve(ImageConfiguration());
ImageStreamListener listener;
listener = ImageStreamListener((ImageInfo imageInfo, bool synchronousCall) {
completer.complete(imageInfo.image);
imageStream.removeListener(listener);
});
imageStream.addListener(listener);
return completer.future;
}
Vector3 quaternionToOrientation(Quaternion q) {
// final Matrix4 m = Matrix4.compose(Vector3.zero(), q, Vector3.all(1.0));
// final Vector v = motionSensors.getOrientation(m);