73 lines
1.7 KiB
Dart
73 lines
1.7 KiB
Dart
import 'dart:ui';
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import 'package:vector_math/vector_math_64.dart';
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import '../filament_controller.dart';
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class Gizmo {
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final FilamentEntity x;
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Vector3 _x = Vector3(0.1, 0, 0);
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final FilamentEntity y;
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Vector3 _y = Vector3(0.0, 0.1, 0);
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final FilamentEntity z;
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Vector3 _z = Vector3(0.0, 0.0, 0.1);
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final FilamentController controller;
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FilamentEntity? _activeAxis;
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FilamentEntity? _activeEntity;
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bool get isActive => _activeAxis != null;
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Gizmo(this.x, this.y, this.z, this.controller) {
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controller.pickResult.listen(_onPickResult);
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}
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Future _reveal() async {
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await controller.reveal(x, null);
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await controller.reveal(y, null);
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await controller.reveal(z, null);
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}
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void translate(Offset offset) async {
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late Vector3 vec;
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if (_activeAxis == x) {
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vec = _x;
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} else if (_activeAxis == y) {
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vec = _y;
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} else if (_activeAxis == z) {
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vec = _z;
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}
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await controller.queuePositionUpdate(_activeEntity!, offset.dx * vec.x,
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-offset.dy * vec.y, -offset.dx * vec.z,
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relative: true);
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}
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void reset() {
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_activeAxis = null;
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}
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void _onPickResult(FilamentPickResult result) async {
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if (result.entity == x || result.entity == y || result.entity == z) {
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_activeAxis = result.entity;
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} else {
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attach(result.entity);
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}
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}
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void attach(FilamentEntity entity) async {
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print("Attaching to $entity");
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_activeAxis = null;
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_activeEntity = entity;
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await _reveal();
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await controller.setParent(x, entity);
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await controller.setParent(y, entity);
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await controller.setParent(z, entity);
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}
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void detach() async {
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await controller.hide(x, null);
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await controller.hide(y, null);
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await controller.hide(z, null);
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}
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}
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