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terrain will clear any caches it has now when detached from the scene graph

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git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@10424 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
This commit is contained in:
bre..om 2013-02-22 21:14:08 +00:00
parent 133d153bbb
commit 13758bd985
2 changed files with 50 additions and 0 deletions
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22
engine/src/terrain/com/jme3/terrain/geomipmap/TerrainPatch.java
View File

@ -982,5 +982,27 @@ public class TerrainPatch extends Geometry {
return worldTranslationCached;
}
/**
* Removes any references when the terrain is being removed.
*/
protected void clearCaches() {
if (leftNeighbour != null) {
leftNeighbour.rightNeighbour = null;
leftNeighbour = null;
}
if (rightNeighbour != null) {
rightNeighbour.leftNeighbour = null;
rightNeighbour = null;
}
if (topNeighbour != null) {
topNeighbour.bottomNeighbour = null;
topNeighbour = null;
}
if (bottomNeighbour != null) {
bottomNeighbour.topNeighbour = null;
bottomNeighbour = null;
}
}
}

28
engine/src/terrain/com/jme3/terrain/geomipmap/TerrainQuad.java
View File

@ -1806,6 +1806,34 @@ public class TerrainQuad extends Node implements Terrain {
return quadClone;
}
@Override
protected void setParent(Node parent) {
super.setParent(parent);
if (parent == null) {
// if the terrain is being detached
clearCaches();
}
}
/**
* Removes any cached references this terrain is holding, in particular
* the TerrainPatch's neighbour references.
* This is called automatically when the root terrainQuad is detached from
* its parent or if setParent(null) is called.
*/
public void clearCaches() {
if (children != null) {
for (int i = children.size(); --i >= 0;) {
Spatial child = children.get(i);
if (child instanceof TerrainQuad) {
((TerrainQuad) child).clearCaches();
} else if (child instanceof TerrainPatch) {
((TerrainPatch) child).clearCaches();
}
}
}
}
public int getMaxLod() {
if (maxLod < 0)