public static List <LayerComponentMapping> SortComponents(TerrainWrapper wrapper, string layerFilter)
{
Profiler.BeginSample("CollectAndOrganise");
// Collect all layerComponents that lie within the bounds of the TerrainWrapper and satisfy the layerFilter (if one is specified)
var allLayerComponents = new List <LayerComponentBase>(Object.FindObjectsOfType <LayerComponentBase>());
var tBounds = new Bounds(wrapper.Terrain.GetPosition() + wrapper.Terrain.terrainData.size / 2,
wrapper.Terrain.terrainData.size);
for (var i = allLayerComponents.Count - 1; i >= 0; i--)
{
var layerComponent = allLayerComponents[i];
if (!String.IsNullOrEmpty(layerFilter) && layerComponent.GetLayerName() != layerFilter)
{
allLayerComponents.RemoveAt(i);
continue;
}
if (!layerComponent.GetEnabled())
{
allLayerComponents.RemoveAt(i);
continue;
}
var stampBounds = new ObjectBounds(layerComponent.transform.position, layerComponent.Size / 2,
layerComponent.transform.rotation);
var axisStampBounds = stampBounds.ToAxisBounds();
if (!tBounds.Intersects(axisStampBounds))
{
allLayerComponents.RemoveAt(i);
}
}
// Sort the Components into what layer they each point to
List <LayerComponentMapping> mappings = new List <LayerComponentMapping>();
for (int i = 0; i < allLayerComponents.Count; i++)
{
var component = allLayerComponents[i];
LayerComponentMapping mapping = null;
foreach (var layerStampMapping in mappings)
{
if (layerStampMapping.LayerName == component.GetLayerName())
{
mapping = layerStampMapping;
break;
}
}
if (mapping == null)
{
mapping = new LayerComponentMapping()
{
LayerIndex = wrapper.GetLayerIndex(component.GetLayerName()),
LayerName = component.GetLayerName()
};
mappings.Add(mapping);
}
mapping.Components.Add(component);
}
// Sort this mapping by layer index, then the contents of the mappings by priority
mappings = mappings.OrderByDescending(mapping => mapping.LayerIndex).ToList();
for (int i = 0; i < mappings.Count; i++)
{
mappings[i].Components = mappings[i].Components.OrderBy(component => component.GetPriority())
.ThenBy(component => component.transform.GetSiblingIndex())
.ToList();
}
// Go through and create new layers as needed
HashSet <LayerBase> cache = new HashSet <LayerBase>();
for (int i = mappings.Count - 1; i >= 0; i--)
{
var layerStampMapping = mappings[i];
for (var j = 0; j < layerStampMapping.Components.Count; ++j)
{
var component = layerStampMapping.Components[j];
var type = component.GetLayerType();
var layer = wrapper.GetLayer(type, layerStampMapping.LayerName, false, true);
if (cache.Contains(layer))
{
continue;
}
cache.Add(layer);
if (layer.Locked)
{
Debug.LogWarningFormat(layer, "Attempted to write to layer {0} but it was locked!", layer.name);
mappings.RemoveAt(i);
continue;
}
layer.Clear(wrapper);
layer.PrepareApply(wrapper, wrapper.GetLayerIndex(layer));
}
}
Profiler.EndSample();
return(mappings);
}
