// static string[] GatherDependenciesFromSourceFile(string path) {
// // Called before actual import for each changed asset that is imported by this importer type
// // Extract the dependencies for the asset specified in path.
// // For asset dependencies that are discovered, return them in the string array, where the string is the path to asset
//
// // TODO: Texture files with relative URIs should be included here
// return null;
// }
public override void OnImportAsset(AssetImportContext ctx)
{
reportItems = null;
var downloadProvider = new EditorDownloadProvider();
var logger = new CollectingLogger();
m_Gltf = new GltfImport(
downloadProvider,
new UninterruptedDeferAgent(),
null,
logger
);
if (editorImportSettings == null)
{
// Design-time import specific settings
editorImportSettings = new EditorImportSettings();
}
if (importSettings == null)
{
// Design-time import specific changes to default settings
importSettings = new ImportSettings {
// Avoid naming conflicts by default
nodeNameMethod = ImportSettings.NameImportMethod.OriginalUnique,
generateMipMaps = true,
animationMethod = ImportSettings.AnimationMethod.Mecanim,
};
}
var success = AsyncHelpers.RunSync(() => m_Gltf.Load(ctx.assetPath, importSettings));
CollectingLogger instantiationLogger = null;
if (success)
{
m_ImportedNames = new HashSet <string>();
m_ImportedObjects = new HashSet <Object>();
if (instantiationSettings.sceneObjectCreation == InstantiationSettings.SceneObjectCreation.Never)
{
// There *has* to be a common parent GameObject that gets
// added to the ScriptedImporter, so we overrule this
// setting.
instantiationSettings.sceneObjectCreation = InstantiationSettings.SceneObjectCreation.WhenMultipleRootNodes;
Debug.LogWarning("SceneObjectCreation setting \"Never\" is not available for Editor (design-time) imports. Falling back to WhenMultipleRootNodes.", this);
}
instantiationLogger = new CollectingLogger();
for (var sceneIndex = 0; sceneIndex < m_Gltf.sceneCount; sceneIndex++)
{
var scene = m_Gltf.GetSourceScene(sceneIndex);
var sceneName = m_Gltf.GetSceneName(sceneIndex);
var go = new GameObject(sceneName);
var instantiator = new GameObjectInstantiator(m_Gltf, go.transform, instantiationLogger, instantiationSettings);
success = m_Gltf.InstantiateScene(instantiator, sceneIndex);
if (!success)
{
break;
}
var useFirstChild = true;
var multipleNodes = scene.nodes.Length > 1;
var hasAnimation = false;
if (importSettings.animationMethod != ImportSettings.AnimationMethod.None &&
(instantiationSettings.mask & ComponentType.Animation) != 0)
{
var animationClips = m_Gltf.GetAnimationClips();
if (animationClips != null && animationClips.Length > 0)
{
hasAnimation = true;
}
}
if (instantiationSettings.sceneObjectCreation == InstantiationSettings.SceneObjectCreation.Never ||
instantiationSettings.sceneObjectCreation == InstantiationSettings.SceneObjectCreation.WhenMultipleRootNodes && !multipleNodes)
{
// No scene GameObject was created, so the first
// child is the first (and in this case only) node.
// If there's animation, its clips' paths are relative
// to the root GameObject (which will also carry the
// `Animation` component. If not, we can import the the
// first and only node as root directly.
useFirstChild = !hasAnimation;
}
var sceneTransform = useFirstChild
? go.transform.GetChild(0)
: go.transform;
var sceneGo = sceneTransform.gameObject;
AddObjectToAsset(ctx, $"scenes/{sceneName}", sceneGo);
if (sceneIndex == m_Gltf.defaultSceneIndex)
{
ctx.SetMainObject(sceneGo);
}
}
for (var i = 0; i < m_Gltf.textureCount; i++)
{
var texture = m_Gltf.GetTexture(i);
if (texture != null)
{
var textureAssetPath = AssetDatabase.GetAssetPath(texture);
if (string.IsNullOrEmpty(textureAssetPath))
{
AddObjectToAsset(ctx, $"textures/{texture.name}", texture);
}
}
}
for (var i = 0; i < m_Gltf.materialCount; i++)
{
var mat = m_Gltf.GetMaterial(i);
if (mat != null)
{
AddObjectToAsset(ctx, $"materials/{mat.name}", mat);
}
}
if (m_Gltf.defaultMaterial != null)
{
// If a default/fallback material was created, import it as well'
// to avoid (pink) objects without materials
var mat = m_Gltf.defaultMaterial;
AddObjectToAsset(ctx, $"materials/{mat.name}", mat);
}
var meshes = m_Gltf.GetMeshes();
if (meshes != null)
{
foreach (var mesh in meshes)
{
if (mesh == null)
{
continue;
}
if (editorImportSettings.generateSecondaryUVSet && !HasSecondaryUVs(mesh))
{
Unwrapping.GenerateSecondaryUVSet(mesh);
}
AddObjectToAsset(ctx, $"meshes/{mesh.name}", mesh);
}
}
#if UNITY_ANIMATION
var clips = m_Gltf.GetAnimationClips();
if (clips != null)
{
foreach (var animationClip in clips)
{
if (animationClip == null)
{
continue;
}
if (importSettings.animationMethod == ImportSettings.AnimationMethod.Mecanim)
{
var settings = AnimationUtility.GetAnimationClipSettings(animationClip);
settings.loopTime = true;
AnimationUtility.SetAnimationClipSettings(animationClip, settings);
}
AddObjectToAsset(ctx, $"animations/{animationClip.name}", animationClip);
}
}
// TODO seems the states don't properly connect to the Animator here
// (would need to be saved as SubAssets of the AnimatorController)
// var animators = go.GetComponentsInChildren<Animator>();
// foreach (var animator in animators)
// {
// var controller = animator.runtimeAnimatorController as UnityEditor.Animations.AnimatorController;
// if (controller != null) {
// AddObjectToAsset(ctx, $"animatorControllers/{animator.name}", controller);
// foreach (var layer in controller.layers)
// {
// var stateMachine = layer.stateMachine;
// stateMachine.hideFlags = HideFlags.HideInHierarchy;
// if(stateMachine)
// AddObjectToAsset(ctx, $"animatorControllers/{animator.name}/{stateMachine.name}", stateMachine);
// }
// }
// }
#endif
m_ImportedNames = null;
m_ImportedObjects = null;
}
var deps = new List <GltfAssetDependency>();
for (var index = 0; index < downloadProvider.assetDependencies.Count; index++)
{
var dependency = downloadProvider.assetDependencies[index];
if (ctx.assetPath == dependency.originalUri)
{
// Skip original gltf/glb file
continue;
}
var guid = AssetDatabase.AssetPathToGUID(dependency.originalUri);
if (!string.IsNullOrEmpty(guid))
{
dependency.assetPath = dependency.originalUri;
ctx.DependsOnSourceAsset(dependency.assetPath);
}
deps.Add(dependency);
}
assetDependencies = deps.ToArray();
var reportItemList = new List <LogItem>();
if (logger.Count > 0)
{
reportItemList.AddRange(logger.Items);
}
if (instantiationLogger?.Items != null)
{
reportItemList.AddRange(instantiationLogger.Items);
}
if (reportItemList.Any(x => x.type == LogType.Error || x.type == LogType.Exception))
{
Debug.LogError($"Failed to import {assetPath} (see inspector for details)", this);
}
reportItems = reportItemList.ToArray();
}