//添加LOD,userData = Vector2(被选中的lod下标，选中的位置)
public static void InsertBeforeOnClick(this LODSlider lodSlider, object userData)
{
var lodGroupEditor = lodSlider.LODGroupEditor;
var lodGroup = lodGroupEditor.LODGroup;
var lods = new List <LOD>(lodGroup.GetLODs());
Vector2 data = (Vector2)userData;
LOD lod = new LOD(data.y);
if (data.x == -1)
{
lod.Priority = lods.Count - 1;
lods.Insert(lods.Count, lod);
}
else
{
lod.Priority = (int)data.x;
lods.Insert((int)data.x, lod);
lodSlider.SelectedShowIndex += 1;
}
lodGroup.SetLODs(lods.ToArray());
lodGroupEditor.RefreshLOD();
}
//删除LOD， userData = int：被选中的下标
public static void DeleteOnClick(this LODSlider lodSlider, object userData)
{
var lodGroupEditor = lodSlider.LODGroupEditor;
var lodGroup = lodGroupEditor.LODGroup;
var lods = new List <LOD>(lodGroup.GetLODs());
int index = (int)userData;
lods.RemoveAt(index);
lodGroup.SetLODs(lods.ToArray());
lodGroupEditor.RefreshLOD();
if (lodSlider.SelectedShowIndex != -1)
{
lodSlider.SelectedShowIndex = Mathf.Clamp(index - 1, 0, index - 1);
}
}
