145 lines
4.1 KiB
Plaintext
145 lines
4.1 KiB
Plaintext
## Quickstart (Flutter)
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> You can find the entire project below in the [examples/flutter/quickstart](examples/flutter/quickstart) folder of the repository.
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1. Switch to Flutter master channel
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```bash
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$ flutter channel master
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```
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2. Add [thermion_flutter] as a dependency to your `pubspec.yaml`.
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```bash
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$ cd /path/to/your/flutter/project$ flutter pub add thermion_flutter```
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```
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3. If running on MacOS, change the minimum deployment targetr to OSX 13
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In `Podfile`
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```
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platform :osx, '13.0'
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```
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Then open XCode:
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```
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open macos/Runner.xcworkspace
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```
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and change the minimum deployment target to 13.0
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2. Add a folder containing your assets (glTF model + skybox ktx) to your `pubspec.yaml` asset list
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```yaml
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...
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flutter
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uses-material-design: true
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assets:
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- assets/
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```
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2. Create an instance of `ThermionFlutterPlugin` in your app.
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```dart
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import 'package:thermion_flutter/thermion_flutter.dart';
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...
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class _MyAppState extends State<MyApp> {
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late ThermionFlutterPlugin _thermionFlutterPlugin;
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late Future<ThermionViewer> _thermionViewer;
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void initState() {
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_thermionFlutterPlugin = ThermionFlutterPlugin();
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_thermionViewer = _thermionFlutterPlugin.createViewer();
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}
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}```
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3. Add a `ThermionWidget` to your widget hierarchy
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```dart
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class _MyAppState extends State<MyApp> {
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late ThermionFlutterPlugin _thermionFlutterPlugin;
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late Future<ThermionViewer> _thermionViewer;
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void initState() {
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_thermionFlutterPlugin = ThermionFlutterPlugin();
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_thermionViewer = _thermionFlutterPlugin.createViewer();
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}
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Widget build(BuildContext context) {
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return Stack(children:[
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Positioned.fill(
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child:ThermionWidget(
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plugin:_thermionFlutterPlugin
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)
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)
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]);
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}}```
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4. Add a button to load the model when pressed
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```dart
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class _MyAppState extends State<MyApp> {
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late ThermionFlutterPlugin _thermionFlutterPlugin;
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late Future<ThermionViewer> _thermionViewer;
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void initState() {
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_thermionFlutterPlugin = ThermionFlutterPlugin();
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_thermionViewer = _thermionFlutterPlugin.createViewer();
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}
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Widget build(BuildContext context) {
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return Stack(children:[
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Positioned.fill(
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child:ThermionWidget(
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plugin:_thermionFlutterPlugin
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)
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),
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Center(child:ElevatedButton(child:Text("Load"), onPressed:() {
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// TODO
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}))
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]);
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}}```
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5. Load a skybox and the glb asset
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```dart
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Center(child:ElevatedButton(child:Text("Load"), onPressed:() {
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var viewer = await _thermionViewer;
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await viewer.loadSkybox("assets/default_env_skybox.ktx");
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await viewer.loadGlb("assets/cube.glb");
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}))
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```
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(Note - "skybox" refers to the background (cube) image rendered behind all other elements in the scene).
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Anything added to the scene is referred to as an "entity".
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Entities are always added to the scene at position (0,0,0).
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The default scene camera is located at (0,0,0) (and is looking at -Z, or "into" the screen), so by adding a cube at (0,0,0), the camera will now be inside the cube.
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We need to move the camera outside the cube so it's visible.
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6. Change the camera orientation
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```dart
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var viewer = await _thermionViewer;
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await viewer.loadSkybox("assets/default_env_skybox.ktx");
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await viewer.loadGlb("assets/cube.glb");
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await viewer.setCameraPosition(0, 1, 10);
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await viewer.setCameraRotation(v.Quaternion.axisAngle(
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v.Vector3(1, 0, 0), -30 / 180 * pi) *
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v.Quaternion.axisAngle(v.Vector3(0, 1, 0), 15 / 180 * pi));
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```
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The cube still won't be visible until we add a light to the scene and tell Thermion to start rendering.
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7. Add a light and turn rendering on
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```dart
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...
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await viewer.addLight(
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LightType.SUN, 7500, 50000, 0, 0, 0, 1, -1, -1);
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await viewer.setRendering(true);
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...
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````
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Your first Thermion project is complete! |