package name changes and fixes

ios/Classes/FilamentViewController.mm

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FilamentViewController.h"
+#import "FilamentView.h"
+#import "FilamentViewer.hpp"
+#import <Flutter/Flutter.h>
+
+@implementation FilamentViewController {
+    CADisplayLink* _displayLink;
+    NSObject<FlutterPluginRegistrar>* _registrar;
+    holovox::FilamentViewer* _viewer;
+    FilamentView* _view;
+}
+
+- (instancetype)initWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar
+                        view:(FilamentView*)view {
+    if (self = [super init]) {
+      _registrar = registrar;
+      _view = view;
+    }
+
+    return self;
+}
+- (void)setViewer:(holovox::FilamentViewer*)viewer {
+    _viewer = viewer;
+    [_view setViewer:_viewer];
+}
+#pragma mark UIViewController methods
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+}
+
+- (void)viewWillAppear:(BOOL)animated {
+    [self startDisplayLink];
+}
+
+- (void)viewWillDisappear:(BOOL)animated {
+    [self stopDisplayLink];
+}
+
+- (void)startDisplayLink {
+    [self stopDisplayLink];
+
+    // Call our render method 60 times a second.
+    _displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(render)];
+    _displayLink.preferredFramesPerSecond = 60;
+    [_displayLink addToRunLoop:NSRunLoop.currentRunLoop forMode:NSDefaultRunLoopMode];
+}
+
+- (void)stopDisplayLink {
+    [_displayLink invalidate];
+    _displayLink = nil;
+}
+
+- (void)render {
+    if(_viewer) {
+        _viewer->render();
+    }
+}
+
+- (void)dealloc {
+
+}
+
+@end