private static void SpawnDecalAt(Transform root, Material mat, DecalItemSet dis)
{
for (var i = 0; i < dis.DecalItemList.Count; i++)
{
DecalItemSet.DecalItem decalItem = dis.DecalItemList[i];
OoSimpleDecal decal = CreateDecal();
decal.AutoUpdateMesh = true;
decal.TargetObjects = new[] { root.Find(decalItem.TargetObjPath).gameObject };
decal.UvArea = decalItem.UvArea;
decal.PushDistance = decalItem.PushDistance;
// 先放到 root 下面，设置 local 值。
decal.transform.parent = root;
decal.transform.localPosition = decalItem.LocalPositionInRoot;
decal.transform.localEulerAngles = decalItem.LocalEulerAngleInRoot;
decal.transform.localScale = decalItem.LocalScaleInRoot;
// 设置正确的 panret
Transform targetParent = root.Find(decalItem.ParentPath);
if (targetParent)
{
decal.transform.parent = targetParent;
decal.gameObject.name = DecalName;
}
else
{
decal.gameObject.name = NoParentDecalName;
}
decal.DecalMaterial = mat;
}
}
private void GenerateAndSaveDecalInstance()
{
// thisPath: Assets/BigMarch/OoSimpleDecalExample/Decal_ii-example.asset
string thisPath = AssetDatabase.GetAssetPath(_decalApply.Set);
// folderPath: Assets/BigMarch/OoSimpleDecalExample/Decal_ii-example/
string saveFolderPath = thisPath.Replace(".asset", "/");
if (!Directory.Exists(saveFolderPath))
{
Debug.LogError("无法存储，找不到同名的文件夹 " + saveFolderPath);
return;
}
DecalItemSet dis = _decalApply.Set;
dis.DecalItemList.Clear();
Transform root = _decalApply.transform;
List <GameObject> decalList = FindAllChild(root, DecalName);
for (var i = 0; i < decalList.Count; i++)
{
EditorUtility.DisplayProgressBar("", "saving", i * 1f / decalList.Count);
GameObject decalObj = decalList[i];
OoSimpleDecal decal = decalObj.GetComponent <OoSimpleDecal>();
// 创建 instance
GameObject decalInstance = decal.CreateDecalInstance();
// 储存 mesh
Mesh meshToSave = decalInstance.GetComponent <MeshFilter>().sharedMesh;
MeshUtility.Optimize(meshToSave);
string meshName = dis.name + "-DecalMesh-" + i;
AssetDatabase.CreateAsset(meshToSave, saveFolderPath + meshName + ".asset");
// 重新关联 mesh
Mesh loadMesh = AssetDatabase.LoadAssetAtPath <Mesh>(saveFolderPath + meshName + ".asset");
decalInstance.GetComponent <MeshFilter>().sharedMesh = loadMesh;
// 存储 prefab
string prefabName = dis.name + "-DecalInstance-" + i;
GameObject decalInstancePrefab =
PrefabUtility.CreatePrefab(saveFolderPath + prefabName + ".prefab",
decalInstance);
// 删除 instance
DestroyImmediate(decalInstance);
// 记录本次循环的 decal item。
DecalItemSet.DecalItem di = new DecalItemSet.DecalItem();
di.DecalInstancePrefab = decalInstancePrefab;
// parent 的 local 值
di.ParentPath = GetTransformPath(root, decal.transform.parent);
// 放到 root 下面记录 local 值。
Transform cacheParent = decalObj.transform.parent;
decalObj.transform.parent = root;
di.LocalPositionInRoot = decalObj.transform.localPosition;
di.LocalEulerAngleInRoot = decalObj.transform.localEulerAngles;
di.LocalScaleInRoot = decalObj.transform.localScale;
// 放到原本的 parent 下面。
decalObj.transform.parent = cacheParent;
di.TargetObjPath = GetTransformPath(root, decal.TargetObjects[0].transform);
di.UvArea = decal.UvArea;
di.PushDistance = decal.PushDistance;
dis.DecalItemList.Add(di);
}
EditorUtility.ClearProgressBar();
EditorUtility.SetDirty(dis);
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
Repaint();
}
