private void OnDisable()
{
this.SendEvent("ObjectSelectorClosed", false);
if (this.m_ListArea != null)
{
this.m_StartGridSize.value = this.m_ListArea.gridSize;
}
Undo.CollapseUndoOperations(this.m_ModalUndoGroup);
if (ObjectSelector.s_SharedObjectSelector == this)
{
ObjectSelector.s_SharedObjectSelector = null;
}
if (this.m_EditorCache != null)
{
this.m_EditorCache.Dispose();
}
AssetPreview.ClearTemporaryAssetPreviews();
}
void OnDisable()
{
NotifySelectorClosed(false);
if (m_ListArea != null)
{
m_StartGridSize.value = m_ListArea.gridSize;
}
Undo.CollapseUndoOperations(m_ModalUndoGroup);
if (s_SharedObjectSelector == this)
{
s_SharedObjectSelector = null;
}
if (m_EditorCache != null)
{
m_EditorCache.Dispose();
}
AssetPreview.ClearTemporaryAssetPreviews();
m_Debounce = null;
}
internal static void RemoveTerrainLayer(Terrain terrain, int index)
{
var terrainData = terrain.terrainData;
int width = terrainData.alphamapWidth;
int height = terrainData.alphamapHeight;
float[,,] alphamap = terrainData.GetAlphamaps(0, 0, width, height);
int alphaCount = alphamap.GetLength(2);
int newAlphaCount = alphaCount - 1;
float[,,] newalphamap = new float[height, width, newAlphaCount];
// move further alphamaps one index below
for (int y = 0; y < height; ++y)
{
for (int x = 0; x < width; ++x)
{
for (int a = 0; a < index; ++a)
{
newalphamap[y, x, a] = alphamap[y, x, a];
}
for (int a = index + 1; a < alphaCount; ++a)
{
newalphamap[y, x, a - 1] = alphamap[y, x, a];
}
}
}
// normalize weights in new alpha map
for (int y = 0; y < height; ++y)
{
for (int x = 0; x < width; ++x)
{
float sum = 0.0F;
for (int a = 0; a < newAlphaCount; ++a)
{
sum += newalphamap[y, x, a];
}
if (sum >= 0.01)
{
float multiplier = 1.0F / sum;
for (int a = 0; a < newAlphaCount; ++a)
{
newalphamap[y, x, a] *= multiplier;
}
}
else
{
// in case all weights sum to pretty much zero (e.g.
// removing splat that had 100% weight), assign
// everything to 1st splat texture (just like
// initial terrain).
for (int a = 0; a < newAlphaCount; ++a)
{
newalphamap[y, x, a] = (a == 0) ? 1.0f : 0.0f;
}
}
}
}
// remove splat from terrain prototypes
var layers = terrainData.terrainLayers;
var newSplats = new TerrainLayer[layers.Length - 1];
for (int a = 0; a < index; ++a)
{
newSplats[a] = layers[a];
}
for (int a = index + 1; a < alphaCount; ++a)
{
newSplats[a - 1] = layers[a];
}
Undo.SetCurrentGroupName("Remove terrain layer");
terrainData.SetTerrainLayersRegisterUndo(newSplats, "Remove Layer");
var undoObjects = new List <UnityEngine.Object>();
undoObjects.AddRange(terrainData.alphamapTextures);
Undo.RegisterCompleteObjectUndo(undoObjects.ToArray(), "Apply Modified Alphamaps");
Undo.CollapseUndoOperations(Undo.GetCurrentGroup());
// set new alphamaps
terrainData.SetAlphamaps(0, 0, newalphamap);
}