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flare_tilt_widget.dart
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flare_tilt_widget.dart
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import 'package:flare_flutter/flare_render_box.dart';
import 'package:flare_flutter/flare.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flare_dart/math/mat2d.dart';
import 'package:flare_dart/math/aabb.dart';
import 'tilt_actor.dart';
class FlareTiltWidget extends LeafRenderObjectWidget {
final BoxFit fit;
final Alignment alignment;
final String filename;
final double pitch;
final double yaw;
final double depth;
const FlareTiltWidget(
this.filename, {
this.fit = BoxFit.contain,
this.alignment = Alignment.center,
this.pitch,
this.yaw,
this.depth,
});
@override
RenderObject createRenderObject(BuildContext context) {
return FlareTiltRenderObject()
..filename = filename
..assetBundle = DefaultAssetBundle.of(context)
..fit = fit
..alignment = alignment
..pitch = pitch
..yaw = yaw
..tiltDepth = depth;
}
@override
void updateRenderObject(
BuildContext context, covariant FlareTiltRenderObject renderObject) {
renderObject
..filename = filename
..assetBundle = DefaultAssetBundle.of(context)
..fit = fit
..alignment = alignment
..pitch = pitch
..yaw = yaw
..tiltDepth = depth;
}
@override
void didUnmountRenderObject(covariant FlareTiltRenderObject renderObject) {
renderObject.dispose();
}
}
class FlareTiltRenderObject extends FlareRenderBox {
TiltArtboard _artboard;
String _filename;
double pitch, yaw, tiltDepth;
String get filename => _filename;
set filename(String value) {
if (value == _filename) {
return;
}
_filename = value;
if (_filename == null) {
markNeedsPaint();
}
// file will change, let's clear out old animations.
load();
}
@override
bool get isPlaying => true;
ActorAnimation _idle;
double _animationTime = 0.0;
@override
void advance(double elapsedSeconds) {
if (_artboard == null) {
return;
}
_animationTime += elapsedSeconds;
_idle?.apply(_animationTime % _idle.duration, _artboard, 1.0);
_artboard.setTilt(pitch, yaw, tiltDepth);
_artboard.advance(elapsedSeconds);
}
@override
AABB get aabb => _artboard?.artboardAABB();
@override
void paintFlare(Canvas canvas, Mat2D viewTransform) {
// Make sure loading is complete.
if (_artboard == null) {
return;
}
_artboard.draw(canvas);
}
@override
Future<void> load() async {
if (_filename == null) {
return;
}
FlutterActor actor = await loadFlare(_filename);
if (actor == null || actor.artboard == null) {
return;
}
TiltArtboard artboard = TiltActor.instanceArtboard(actor);
artboard.initializeGraphics();
_artboard = artboard;
_idle = _artboard.getAnimation("idle");
_artboard.advance(0.0);
markNeedsPaint();
}
}