internal static CSGModel GetDefaultCSGModel(Scene scene)
{
if (!scene.IsValid() ||
!scene.isLoaded)
{
return(null);
}
// make sure we're properly initialized (just in case)
if (!SceneStates.ContainsKey(scene))
{
SceneStates[scene] = new CSGSceneState();
}
if (!SceneStates[scene].DefaultModel)
{
InitializeDefaultCSGModel(scene, SceneStates[scene], createIfNoExists: true);
}
return(SceneStates[scene].DefaultModel);
}
static void InitializeDefaultCSGModel(Scene currentScene, CSGSceneState sceneState, bool createIfNoExists = true)
{
bool inPrefabMode = false;
Transform prefabRootTransform = null;
#if UNITY_2018_3_OR_NEWER
var currentPrefabStage = UnityEditor.Experimental.SceneManagement.PrefabStageUtility.GetCurrentPrefabStage();
if (currentPrefabStage != null)
{
var prefabRoot = currentPrefabStage.prefabContentsRoot;
prefabRootTransform = prefabRoot.transform;
inPrefabMode = (prefabRoot.scene == currentScene);
}
#endif
var defaultModelName = inPrefabMode ? DefaultPrefabModelName : DefaultModelName;
// make sure we have a default CSG model
sceneState.DefaultModelObject = SceneQueryUtility.GetUniqueHiddenGameObjectInSceneWithName(currentScene, defaultModelName);
if (createIfNoExists)
{
if (!sceneState.DefaultModelObject)
{
sceneState.DefaultModelObject = new GameObject(defaultModelName);
sceneState.DefaultModel = CreateCSGModel(sceneState.DefaultModelObject);
}
else
{
sceneState.DefaultModel = sceneState.DefaultModelObject.GetComponent <CSGModel>();
if (!sceneState.DefaultModel)
{
sceneState.DefaultModel = CreateCSGModel(sceneState.DefaultModelObject);
}
}
// make sure it's transformation has sensible values
var transform = sceneState.DefaultModel.transform;
if (inPrefabMode)
{
transform.SetParent(prefabRootTransform, false);
}
else
{
transform.parent = null;
}
transform.localPosition = MathConstants.zeroVector3;
transform.localScale = MathConstants.oneVector3;
transform.localRotation = Quaternion.identity;
var defaultFlags = //StaticEditorFlags.LightmapStatic |
StaticEditorFlags.BatchingStatic |
StaticEditorFlags.NavigationStatic |
StaticEditorFlags.OccludeeStatic |
StaticEditorFlags.OffMeshLinkGeneration |
StaticEditorFlags.ReflectionProbeStatic;
GameObjectUtility.SetStaticEditorFlags(sceneState.DefaultModel.gameObject, defaultFlags);
RegisterModel(sceneState.DefaultModel);
}
// do not give default CSG model any extra abilities other than rendering
// since an invisible object doesn't work well with navmesh/colliders etc.
// force the users to use a CSG-model, but gracefully let it still be
// visible for objects outside of it.
if (inPrefabMode)
{
sceneState.DefaultModelObject.hideFlags = MeshInstanceManager.ComponentHideFlags | HideFlags.DontSave;
}
else
{
sceneState.DefaultModelObject.hideFlags = MeshInstanceManager.ComponentHideFlags;
}
}