add getTargetNames method

lib/filament_controller.dart

@@ -1,12 +1,13 @@
+import 'dart:async';
+
 import 'package:flutter/services.dart';
 
 abstract class FilamentController {
   void onFilamentViewCreated(int id);
-  Future initialize({String? materialPath});
+
   Future loadSkybox(String skyboxPath, String lightingPath);
   Future loadGlb(String path);
-  Future loadGltf(
-      String path, String relativeResourcePath, String materialInstanceName);
+  Future loadGltf(String path, String relativeResourcePath);
   Future panStart(double x, double y);
   Future panUpdate(double x, double y);
   Future panEnd();
@@ -14,6 +15,10 @@ abstract class FilamentController {
   Future rotateUpdate(double x, double y);
   Future rotateEnd();
   Future applyWeights(List<double> weights, int primitiveIndex);
+  Future<List<String>> getTargetNames(String meshName);
+
+  void animate(
+      List<List<double>> weights, int primitiveIndex, double frameRate);
   Future createMorpher(String meshName, String entityName,
       {String? materialName});
   Future zoom(double z);
@@ -22,15 +27,27 @@ abstract class FilamentController {
 class MimeticFilamentController extends FilamentController {
   late int _id;
   late MethodChannel _channel;
+  final String materialPath;
+
+  MimeticFilamentController(
+      {this.materialPath = "packages/mimetic_filament/assets/compiled.mat"});
 
   @override
   void onFilamentViewCreated(int id) async {
     _id = id;
     _channel = MethodChannel("mimetic.app/filament_view_$id");
+    _channel.setMethodCallHandler((call) async {
+      await Future.delayed(Duration(
+          seconds:
+              1)); // todo - need a better way to know when the GL context is actaully ready
+      await _initialize();
+      return Future.value(true);
+    });
   }
 
   @override
-  Future initialize({String? materialPath}) async {
+  Future _initialize() async {
+    print("Initializing");
     await _channel.invokeMethod("initialize", materialPath);
   }
 
@@ -43,10 +60,10 @@ class MimeticFilamentController extends FilamentController {
     throw Exception();
   }
 
-  Future loadGltf(String path, String relativeResourcePath,
-      String materialInstanceName) async {
-    await _channel.invokeMethod(
-        "loadGltf", [path, relativeResourcePath, materialInstanceName]);
+  Future loadGltf(String path, String relativeResourcePath) async {
+    print(
+        "Loading GLTF at $path with relative resource path $relativeResourcePath");
+    await _channel.invokeMethod("loadGltf", [path, relativeResourcePath]);
   }
 
   Future panStart(double x, double y) async {
@@ -77,6 +94,26 @@ class MimeticFilamentController extends FilamentController {
     await _channel.invokeMethod("applyWeights", [weights, primitiveIndex]);
   }
 
+  Future<List<String>> getTargetNames(String meshName) async {
+    var result = (await _channel.invokeMethod("getTargetNames", meshName))
+        .cast<String>();
+    return result;
+  }
+
+  void animate(
+      List<List<double>> weights, int primitiveIndex, double frameRate) async {
+    final msPerFrame = 1000 ~/ frameRate;
+    int i = 0;
+
+    Timer.periodic(Duration(milliseconds: msPerFrame), (t) async {
+      _channel.invokeMethod("applyWeights", [weights[i], primitiveIndex]);
+      i++;
+      if (i >= weights.length) {
+        t.cancel();
+      }
+    });
+  }
+
   Future zoom(double z) async {
     await _channel.invokeMethod("zoom", z);
   }

lib/mimetic_filament.dart

@@ -1,13 +0,0 @@
-
-import 'dart:async';
-
-import 'package:flutter/services.dart';
-
-class MimeticFilament {
-  static const MethodChannel _channel = MethodChannel('mimetic_filament');
-
-  static Future<String?> get platformVersion async {
-    final String? version = await _channel.invokeMethod('getPlatformVersion');
-    return version;
-  }
-}

lib/mimetic_filament_plugin.dart

@@ -1,19 +0,0 @@
-// You have generated a new plugin project without
-// specifying the `--platforms` flag. A plugin project supports no platforms is generated.
-// To add platforms, run `flutter create -t plugin --platforms <platforms> .` under the same
-// directory. You can also find a detailed instruction on how to add platforms in the `pubspec.yaml` at https://flutter.dev/docs/development/packages-and-plugins/developing-packages#plugin-platforms.
-
-import 'dart:async';
-
-import 'package:flutter/services.dart';
-
-class MimeticFilamentPlugin {
-  static const MethodChannel _channel = MethodChannel('mimetic_filament');
-
-  static Future<String?> get platformVersion async {
-    final String? version = await _channel.invokeMethod('getPlatformVersion');
-    return version;
-  }
-
-  static void initialize() {}
-}