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ios/src/FilamentViewer.hpp

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+#include <filament/Camera.h>
+#include <filament/ColorGrading.h>
+#include <filament/Engine.h>
+#include <filament/IndexBuffer.h>
+#include <filament/RenderableManager.h>
+#include <filament/Renderer.h>
+#include <filament/Scene.h>
+#include <filament/Skybox.h>
+#include <filament/TransformManager.h>
+#include <filament/VertexBuffer.h>
+#include <filament/View.h>
+
+#include <gltfio/AssetLoader.h>
+#include <gltfio/FilamentAsset.h>
+#include <gltfio/ResourceLoader.h>
+
+#include <camutils/Manipulator.h>
+
+#include <utils/NameComponentManager.h>
+
+#include <math/vec3.h>
+#include <math/vec4.h>
+#include <math/mat3.h>
+#include <math/norm.h>
+
+#include <fstream>
+#include <iostream>
+#include <string>
+
+using namespace std;
+using namespace filament;
+using namespace filament::math;
+using namespace gltfio;
+using namespace utils;
+using namespace camutils;
+
+
+namespace mimetic {
+
+    struct ResourceBuffer {
+        ResourceBuffer(const void* data, const uint32_t size) : data(data), size(size) {};
+        const void* data;
+        const uint32_t size;
+    };
+
+    using LoadResource = std::function<ResourceBuffer(const char* uri)>;
+    using FreeResource = std::function<void * (void *mem, size_t s, void *)>;
+
+    class FilamentViewer {
+        public:
+            FilamentViewer(void* layer, LoadResource loadResource, FreeResource freeResource);
+            ~FilamentViewer();
+            void loadGltf(const char* const uri);
+            void loadSkybox(const char* const skyboxUri, const char* const iblUri);
+        private:
+            void loadResources();
+            void cleanup();
+            void* _layer;
+            LoadResource _loadResource;
+            FreeResource _freeResource;
+            
+            Scene* _scene;
+            View* _view;  
+            Engine* _engine;
+            Camera* _mainCamera;
+            Renderer* _renderer;
+    
+            SwapChain* _swapChain;
+
+            Animator* _animator;
+
+            Manipulator<float>* _manipulator;
+
+            AssetLoader* _assetLoader;
+            FilamentAsset* _asset = nullptr;
+            NameComponentManager* _ncm;
+
+            Entity _sun;
+            Texture* _skyboxTexture;
+            Skybox* _skybox;
+            Texture* _iblTexture;
+            IndirectLight* _indirectLight;
+
+            MaterialProvider* _materialProvider;
+
+            gltfio::ResourceLoader* _resourceLoader = nullptr;
+            bool _recomputeAabb = false;
+
+            bool _actualSize = false;     
+            
+            float _cameraFocalLength = 0.0f;
+
+
+    };
+}