/// \cond
protected override void Synchronize()
{
base.Synchronize();
// Syncronize the mesh data.
if (data != null)
{
if (data.volumeHandle.HasValue)
{
CubiquityDLL.UpdateVolumeMC(data.volumeHandle.Value);
if (CubiquityDLL.HasRootOctreeNodeMC(data.volumeHandle.Value) == 1)
{
uint rootNodeHandle = CubiquityDLL.GetRootOctreeNodeMC(data.volumeHandle.Value);
if (rootOctreeNodeGameObject == null)
{
rootOctreeNodeGameObject = OctreeNode.CreateOctreeNode(rootNodeHandle, gameObject);
}
OctreeNode rootOctreeNode = rootOctreeNodeGameObject.GetComponent <OctreeNode>();
int nodeSyncsPerformed = rootOctreeNode.syncNode(maxNodesPerSync, gameObject);
// If no node were syncronized then the mesh data is up to
// date and we can set the flag to convey this to the user.
isMeshSyncronized = (nodeSyncsPerformed == 0);
}
}
}
}
/// \cond
protected override void Synchronize()
{
base.Synchronize();
ColoredCubesVolumeRenderer volumeRenderer = gameObject.GetComponent <ColoredCubesVolumeRenderer>();
if (volumeRenderer != null)
{
if (volumeRenderer.material != null)
{
// We compute surface normals using derivative operations in the fragment shader, but for some reason
// these are backwards on Linux. We can correct for this in the shader by setting the multiplier below.
#if UNITY_STANDALONE_LINUX && !UNITY_EDITOR
float normalMultiplier = -1.0f;
#else
float normalMultiplier = 1.0f;
#endif
volumeRenderer.material.SetFloat("normalMultiplier", normalMultiplier);
}
}
// Syncronize the mesh data.
if (data != null)
{
// Syncronize the mesh data.
if (data.volumeHandle.HasValue)
{
CubiquityDLL.UpdateVolume(data.volumeHandle.Value);
if (CubiquityDLL.HasRootOctreeNode(data.volumeHandle.Value) == 1)
{
uint rootNodeHandle = CubiquityDLL.GetRootOctreeNode(data.volumeHandle.Value);
if (rootOctreeNodeGameObject == null)
{
rootOctreeNodeGameObject = OctreeNode.CreateOctreeNode(rootNodeHandle, gameObject);
}
OctreeNode rootOctreeNode = rootOctreeNodeGameObject.GetComponent <OctreeNode>();
int nodeSyncsPerformed = rootOctreeNode.syncNode(maxNodesPerSync, gameObject);
// If no node were syncronized then the mesh data is up to
// date and we can set the flag to convey this to the user.
isMeshSyncronized = (nodeSyncsPerformed == 0);
}
}
}
}
public int syncNode(int availableNodeSyncs, GameObject voxelTerrainGameObject)
{
int nodeSyncsPerformed = 0;
if (availableNodeSyncs <= 0)
{
return(nodeSyncsPerformed);
}
uint meshLastUpdated = CubiquityDLL.GetMeshLastUpdated(nodeHandle);
if (meshLastSyncronised < meshLastUpdated)
{
if (CubiquityDLL.NodeHasMesh(nodeHandle) == 1)
{
// Set up the rendering mesh
VolumeRenderer volumeRenderer = voxelTerrainGameObject.GetComponent <VolumeRenderer>();
if (volumeRenderer != null)
{
//Mesh renderingMesh = volumeRenderer.BuildMeshFromNodeHandle(nodeHandle);
Mesh renderingMesh = null;
if (voxelTerrainGameObject.GetComponent <Volume>().GetType() == typeof(TerrainVolume))
{
renderingMesh = BuildMeshFromNodeHandleForTerrainVolume(nodeHandle);
}
else if (voxelTerrainGameObject.GetComponent <Volume>().GetType() == typeof(ColoredCubesVolume))
{
renderingMesh = BuildMeshFromNodeHandleForColoredCubesVolume(nodeHandle);
}
MeshFilter meshFilter = gameObject.GetOrAddComponent <MeshFilter>() as MeshFilter;
MeshRenderer meshRenderer = gameObject.GetOrAddComponent <MeshRenderer>() as MeshRenderer;
if (meshFilter.sharedMesh != null)
{
DestroyImmediate(meshFilter.sharedMesh);
}
meshFilter.sharedMesh = renderingMesh;
meshRenderer.sharedMaterial = volumeRenderer.material;
#if UNITY_EDITOR
EditorUtility.SetSelectedWireframeHidden(meshRenderer, true);
#endif
}
// Set up the collision mesh
VolumeCollider volumeCollider = voxelTerrainGameObject.GetComponent <VolumeCollider>();
if ((volumeCollider != null) && (Application.isPlaying))
{
Mesh collisionMesh = volumeCollider.BuildMeshFromNodeHandle(nodeHandle);
MeshCollider meshCollider = gameObject.GetOrAddComponent <MeshCollider>() as MeshCollider;
meshCollider.sharedMesh = collisionMesh;
}
}
// If there is no mesh in Cubiquity then we make sure there isn't on in Unity.
else
{
MeshCollider meshCollider = gameObject.GetComponent <MeshCollider>() as MeshCollider;
if (meshCollider)
{
DestroyImmediate(meshCollider);
}
MeshRenderer meshRenderer = gameObject.GetComponent <MeshRenderer>() as MeshRenderer;
if (meshRenderer)
{
DestroyImmediate(meshRenderer);
}
MeshFilter meshFilter = gameObject.GetComponent <MeshFilter>() as MeshFilter;
if (meshFilter)
{
DestroyImmediate(meshFilter);
}
}
meshLastSyncronised = CubiquityDLL.GetCurrentTime();
availableNodeSyncs--;
nodeSyncsPerformed++;
}
VolumeRenderer vr = voxelTerrainGameObject.GetComponent <VolumeRenderer>();
MeshRenderer mr = gameObject.GetComponent <MeshRenderer>();
if (vr != null && mr != null)
{
if (mr.enabled != vr.enabled) // Not sure we really need this check?
{
mr.enabled = vr.enabled;
}
if (lastSyncronisedWithVolumeRenderer < vr.lastModified)
{
mr.receiveShadows = vr.receiveShadows;
mr.castShadows = vr.castShadows;
lastSyncronisedWithVolumeRenderer = Clock.timestamp;
}
}
VolumeCollider vc = voxelTerrainGameObject.GetComponent <VolumeCollider>();
MeshCollider mc = gameObject.GetComponent <MeshCollider>();
if (vc != null && mc != null)
{
if (mc.enabled != vc.enabled) // Not sure we really need this check?
{
mc.enabled = vc.enabled;
}
if (lastSyncronisedWithVolumeCollider < vc.lastModified)
{
// Actual syncronization to be filled in in the future when we have something to syncronize.
lastSyncronisedWithVolumeCollider = Clock.timestamp;
}
}
//Now syncronise any children
for (uint z = 0; z < 2; z++)
{
for (uint y = 0; y < 2; y++)
{
for (uint x = 0; x < 2; x++)
{
if (CubiquityDLL.HasChildNode(nodeHandle, x, y, z) == 1)
{
uint childNodeHandle = CubiquityDLL.GetChildNode(nodeHandle, x, y, z);
GameObject childGameObject = GetChild(x, y, z);
if (childGameObject == null)
{
childGameObject = OctreeNode.CreateOctreeNode(childNodeHandle, gameObject);
SetChild(x, y, z, childGameObject);
}
//syncNode(childNodeHandle, childGameObject);
OctreeNode childOctreeNode = childGameObject.GetComponent <OctreeNode>();
int syncs = childOctreeNode.syncNode(availableNodeSyncs, voxelTerrainGameObject);
availableNodeSyncs -= syncs;
nodeSyncsPerformed += syncs;
}
}
}
}
return(nodeSyncsPerformed);
}
/// \cond
protected override bool SynchronizeOctree(uint availableSyncOperations)
{
VolumeCollider volumeCollider = gameObject.GetComponent <VolumeCollider>();
ColoredCubesVolumeRenderer volumeRenderer = gameObject.GetComponent <ColoredCubesVolumeRenderer>();
Vector3 camPos = CameraUtils.getCurrentCameraPosition();
// This is messy - perhaps the LOD thresold shold not be a parameter to update. Instead it could be passed
// as a parameter during traversal, so different traversal could retrieve differnt LODs. We then wouldn't
// want a single 'renderThisNode' member of Cubiquity nodes, but instead some threshold we could compare to.
float lodThreshold = GetComponent <VolumeRenderer>() ? GetComponent <VolumeRenderer>().lodThreshold : 0.0f;
int minimumLOD = GetComponent <VolumeRenderer>() ? GetComponent <VolumeRenderer>().minimumLOD : 0;
// Although the LOD system is partially functional I don't feel it's ready for release yet.
// The following line disables it by forcing the highest level of detail to always be used.
minimumLOD = 0;
// Next line commented out so the system starts up with LOD disabled.
//if (volumeRenderer != null && volumeRenderer.hasChanged)
{
CubiquityDLL.SetLodRange(data.volumeHandle.Value, minimumLOD, 0);
}
bool cubiquityUpToDate = CubiquityDLL.UpdateVolume(data.volumeHandle.Value, camPos.x, camPos.y, camPos.z, lodThreshold);
if (CubiquityDLL.HasRootOctreeNode(data.volumeHandle.Value) == 1)
{
uint rootNodeHandle = CubiquityDLL.GetRootOctreeNode(data.volumeHandle.Value);
if (rootOctreeNodeGameObject == null)
{
rootOctreeNodeGameObject = OctreeNode.CreateOctreeNode(rootNodeHandle, gameObject);
}
OctreeNode.syncNode(ref availableSyncOperations, rootOctreeNodeGameObject, rootNodeHandle, gameObject);
if (volumeRenderer != null && volumeRenderer.hasChanged)
{
OctreeNode.syncNodeWithVolumeRenderer(rootOctreeNodeGameObject, volumeRenderer, true);
}
if (volumeCollider != null && volumeCollider.hasChanged)
{
OctreeNode.syncNodeWithVolumeCollider(rootOctreeNodeGameObject, volumeCollider, true);
}
}
// These properties might have to be synced with the volume (e.g. LOD settings) or with components
// (e.g. shadow/material settings). Therefore we don't clear the flags until all syncing is completed.
if (volumeRenderer != null)
{
volumeRenderer.hasChanged = false;
}
if (volumeCollider != null)
{
volumeCollider.hasChanged = false;
}
// If there were still sync operations available then there was no more syncing to be done with the
// Cubiquity octree. So if the Cubiquity octree was also up to date then we have synced everything.
return(cubiquityUpToDate && availableSyncOperations > 0);
}
public static void syncNode(ref uint availableSyncOperations, GameObject nodeGameObject, uint nodeHandle, GameObject voxelTerrainGameObject)
{
OctreeNode octreeNode = nodeGameObject.GetComponent <OctreeNode>();
CuOctreeNode cuOctreeNode = CubiquityDLL.GetOctreeNode(nodeHandle);
////////////////////////////////////////////////////////////////////////////////
// Has anything in this node or its children changed? If so, we may need to syncronise the node's properties, mesh and
// structure. Each of these can be tested against a timestamp. We may also need to do this recursively on child nodes.
////////////////////////////////////////////////////////////////////////////////
if (cuOctreeNode.nodeOrChildrenLastChanged > octreeNode.nodeAndChildrenLastSynced)
{
bool resyncedProperties = false; // See comments where this is tested - it's a bit of a hack
////////////////////////////////////////////////////////////////////////////////
// 1st test - Have the properties of the node changed?
////////////////////////////////////////////////////////////////////////////////
if (cuOctreeNode.propertiesLastChanged > octreeNode.propertiesLastSynced)
{
octreeNode.renderThisNode = cuOctreeNode.renderThisNode != 0;
octreeNode.height = cuOctreeNode.height;
octreeNode.propertiesLastSynced = CubiquityDLL.GetCurrentTime();
resyncedProperties = true;
}
////////////////////////////////////////////////////////////////////////////////
// 2nd test - Has the mesh changed and do we have time to syncronise it?
////////////////////////////////////////////////////////////////////////////////
if ((cuOctreeNode.meshLastChanged > octreeNode.meshLastSynced) && (availableSyncOperations > 0))
{
if (cuOctreeNode.hasMesh == 1)
{
// Set up the rendering mesh
VolumeRenderer volumeRenderer = voxelTerrainGameObject.GetComponent <VolumeRenderer>();
if (volumeRenderer != null)
{
MeshFilter meshFilter = nodeGameObject.GetOrAddComponent <MeshFilter>() as MeshFilter;
if (meshFilter.sharedMesh == null)
{
meshFilter.sharedMesh = new Mesh();
}
MeshRenderer meshRenderer = nodeGameObject.GetOrAddComponent <MeshRenderer>() as MeshRenderer;
if (voxelTerrainGameObject.GetComponent <Volume>().GetType() == typeof(TerrainVolume))
{
MeshConversion.BuildMeshFromNodeHandleForTerrainVolume(meshFilter.sharedMesh, nodeHandle, false);
}
else if (voxelTerrainGameObject.GetComponent <Volume>().GetType() == typeof(ColoredCubesVolume))
{
MeshConversion.BuildMeshFromNodeHandleForColoredCubesVolume(meshFilter.sharedMesh, nodeHandle, false);
}
meshRenderer.enabled = volumeRenderer.enabled && octreeNode.renderThisNode;
// For syncing materials, shadow properties, etc.
syncNodeWithVolumeRenderer(nodeGameObject, volumeRenderer, false);
}
// Set up the collision mesh
VolumeCollider volumeCollider = voxelTerrainGameObject.GetComponent <VolumeCollider>();
if (volumeCollider != null)
{
bool useCollider = volumeCollider.useInEditMode || Application.isPlaying;
if (useCollider)
{
// I'm not quite comfortable with this. For some reason we have to create this new mesh, fill it,
// and set it as the collider's shared mesh, whereas I would rather just pass the collider's sharedMesh
// straight to the functon that fills it. For some reason that doesn't work properly, and we see
// issues with objects falling through terrain or not updating when part of the terrain is deleted.
// It's to be investigated further... perhaps we could try deleting and recreating the MeshCollider?
// Still, the approach below seems to work properly.
Mesh collisionMesh = new Mesh();
if (voxelTerrainGameObject.GetComponent <Volume>().GetType() == typeof(TerrainVolume))
{
MeshConversion.BuildMeshFromNodeHandleForTerrainVolume(collisionMesh, nodeHandle, true);
}
else if (voxelTerrainGameObject.GetComponent <Volume>().GetType() == typeof(ColoredCubesVolume))
{
MeshConversion.BuildMeshFromNodeHandleForColoredCubesVolume(collisionMesh, nodeHandle, true);
}
MeshCollider meshCollider = nodeGameObject.GetOrAddComponent <MeshCollider>() as MeshCollider;
meshCollider.sharedMesh = collisionMesh;
}
}
}
// If there is no mesh in Cubiquity then we make sure there isn't one in Unity.
else
{
MeshCollider meshCollider = nodeGameObject.GetComponent <MeshCollider>() as MeshCollider;
if (meshCollider)
{
Utility.DestroyOrDestroyImmediate(meshCollider);
}
MeshRenderer meshRenderer = nodeGameObject.GetComponent <MeshRenderer>() as MeshRenderer;
if (meshRenderer)
{
Utility.DestroyOrDestroyImmediate(meshRenderer);
}
MeshFilter meshFilter = nodeGameObject.GetComponent <MeshFilter>() as MeshFilter;
if (meshFilter)
{
Utility.DestroyOrDestroyImmediate(meshFilter);
}
}
octreeNode.meshLastSynced = CubiquityDLL.GetCurrentTime();
availableSyncOperations--;
}
// We want to syncronize the properties before the mesh, so that the enabled flag can be set correctly when the mesh
// is created. But we also want to syncronize properties after the mesh, so we can apply the correct enabled flag to
// existing meshes when the node's 'renderThisNode' flag has changed. Therefore we set the 'resyncedProperties' flag
// previously to let ourseves know that we should come back an finish the propertiy syncing here. It's a bit of a hack.
if (resyncedProperties)
{
VolumeRenderer volumeRenderer = voxelTerrainGameObject.GetComponent <VolumeRenderer>();
if (volumeRenderer != null)
{
syncNodeWithVolumeRenderer(nodeGameObject, volumeRenderer, false);
}
VolumeCollider volumeCollider = voxelTerrainGameObject.GetComponent <VolumeCollider>();
if (volumeCollider != null)
{
syncNodeWithVolumeCollider(nodeGameObject, volumeCollider, false);
}
}
uint[, ,] childHandleArray = new uint[2, 2, 2];
childHandleArray[0, 0, 0] = cuOctreeNode.childHandle000;
childHandleArray[0, 0, 1] = cuOctreeNode.childHandle001;
childHandleArray[0, 1, 0] = cuOctreeNode.childHandle010;
childHandleArray[0, 1, 1] = cuOctreeNode.childHandle011;
childHandleArray[1, 0, 0] = cuOctreeNode.childHandle100;
childHandleArray[1, 0, 1] = cuOctreeNode.childHandle101;
childHandleArray[1, 1, 0] = cuOctreeNode.childHandle110;
childHandleArray[1, 1, 1] = cuOctreeNode.childHandle111;
////////////////////////////////////////////////////////////////////////////////
// 3rd test - Has the structure of the octree node changed (gained or lost children)?
////////////////////////////////////////////////////////////////////////////////
if (cuOctreeNode.structureLastChanged > octreeNode.structureLastSynced)
{
//Now syncronise any children
for (uint z = 0; z < 2; z++)
{
for (uint y = 0; y < 2; y++)
{
for (uint x = 0; x < 2; x++)
{
if (childHandleArray[x, y, z] != 0xFFFFFFFF)
{
uint childNodeHandle = childHandleArray[x, y, z];
if (octreeNode.GetChild(x, y, z) == null)
{
octreeNode.SetChild(x, y, z, OctreeNode.CreateOctreeNode(childNodeHandle, nodeGameObject));
}
}
else
{
if (octreeNode.GetChild(x, y, z))
{
Utility.DestroyOrDestroyImmediate(octreeNode.GetChild(x, y, z));
octreeNode.SetChild(x, y, z, null);
}
}
}
}
}
octreeNode.structureLastSynced = CubiquityDLL.GetCurrentTime();
}
////////////////////////////////////////////////////////////////////////////////
// The last step of syncronization is to apply it recursively to our children.
////////////////////////////////////////////////////////////////////////////////
for (uint z = 0; z < 2; z++)
{
for (uint y = 0; y < 2; y++)
{
for (uint x = 0; x < 2; x++)
{
if (octreeNode.GetChild(x, y, z) != null && availableSyncOperations > 0)
{
OctreeNode.syncNode(ref availableSyncOperations, octreeNode.GetChild(x, y, z), childHandleArray[x, y, z], voxelTerrainGameObject);
}
}
}
}
// We've reached the end of our syncronization process. If there are still sync operations available then
// we did less work then we could have, which implies we finished. Therefore mark the whole tree as synced.
if (availableSyncOperations > 0)
{
octreeNode.nodeAndChildrenLastSynced = CubiquityDLL.GetCurrentTime();
}
}
}
