// --------------------------------------------------
// Manual Volume Grid
public static IEnumerator BuildManualVolumeGrid(BoxCollider[] manualVolumes, Action <VolumeData> result)
{
VolumeData data = null;
if (manualVolumes.Length == 0)
{
result(data);
}
Bounds bounds = new Bounds();
for (int i = 0; i < manualVolumes.Length; i++)
{
bounds.Encapsulate(manualVolumes[i].bounds);
}
List <VolumeData> volumes = new List <VolumeData>();
for (int i = 0; i < manualVolumes.Length; i++)
{
volumes.Add(new VolumeData(manualVolumes[i].bounds, null, null));
}
data = new VolumeData(bounds, volumes.ToArray(), null);
yield return(null);
result(data);
}
private static IEnumerator BuildHierarchicalVolumeGridRecursive(int count, int density, VolumeData data, Action <VolumeData> result, object obj)
{
count++;
VolumeData[] childData = new VolumeData[8];
for (int i = 0; i < childData.Length; i++)
{
Vector3 size = new Vector3(data.bounds.size.x * 0.5f, data.bounds.size.y * 0.5f, data.bounds.size.z * 0.5f);
float signX = (float)(i + 1) % 2 == 0 ? 1 : -1;
float signY = i == 2 || i == 3 || i == 6 || i == 7 ? 1 : -1; // TODO - Maths
float signZ = i == 4 || i == 5 || i == 6 || i == 7 ? 1 : -1; //(float)(i + 1) * 0.5f > 4 ? 1 : -1; // TODO - Maths
Vector3 position = data.bounds.center + new Vector3(signX * size.x * 0.5f, signY * size.y * 0.5f, signZ * size.z * 0.5f);
Bounds bounds = new Bounds(position, size);
childData[i] = new VolumeData(bounds, null, null);
if (count < density)
{
VolumeData childResult = new VolumeData();
yield return(EditorCoroutines.StartCoroutine(BuildHierarchicalVolumeGridRecursive(count, density, childData[i], value => childResult = value, obj), obj));
childData[i] = childResult;
}
}
data.children = childData;
result(data);
}
// ----------------------------------------------------------------------------------------------------//
// RUNTIME //
// ----------------------------------------------------------------------------------------------------//
public static bool GetActiveVolumeAtPosition(VolumeData volumeData, Vector3 position, out VolumeData activeVolume)
{
if (volumeData.bounds.Contains(position))
{
// Continue to traverse down the volume hierarchy
if (volumeData.children != null && volumeData.children.Length > 0)
{
for (int i = 0; i < volumeData.children.Length; i++)
{
if (GetActiveVolumeAtPosition(volumeData.children[i], position, out activeVolume))
{
return(true);
}
}
}
// Active volume at final subdivision of volume hierarchy
else
{
activeVolume = volumeData;
return(true);
}
}
activeVolume = null;
return(false);
}
public static void DrawHierarchicalVolumeGrid(VolumeData data, VolumeData activeVolume = null)
{
if (data == null)
{
return;
}
DrawHierarchicalVolumeGridRecursive(data, activeVolume);
}
// --------------------------------------------------
// Hirarchical Volume Grid
public static IEnumerator BuildHierarchicalVolumeGrid(Bounds bounds, int density, Action <VolumeData> result, object obj)
{
VolumeData data = new VolumeData(bounds, null, null);
int count = 0;
if (count < density)
{
yield return(EditorCoroutines.StartCoroutine(BuildHierarchicalVolumeGridRecursive(count, density, data, value => data = value, obj), obj));
}
result(data);
}
private IEnumerator GenerateOcclusion()
{
m_StaticRenderers = Utils.GetStaticRenderers();
// Generate Occluder Data
m_BakeState = BakeState.Occluders;
ClearOccluderData();
yield return(EditorCoroutines.StartCoroutine(Utils.BuildOccluderProxyGeometry(transform, m_StaticRenderers, value => m_Occluders = value, this, m_OccluderTag), this));
// Generate Volume Data
m_BakeState = BakeState.Volumes;
ClearVolumeData();
switch (m_VolumeMode)
{
case VolumeMode.Automatic:
// Generate Hierarchical Volume Grid
Bounds bounds = Utils.GetSceneBounds(m_StaticRenderers);
yield return(EditorCoroutines.StartCoroutine(Utils.BuildHierarchicalVolumeGrid(bounds, m_VolumeDensity, value => m_VolumeData = value, this), this));
break;
case VolumeMode.Manual:
// Generate Manual Volumes
yield return(EditorCoroutines.StartCoroutine(Utils.BuildManualVolumeGrid(m_ManualVolumes, value => m_VolumeData = value), this));
break;
}
if (m_VolumeData != null)
{
// Generate Occlusion Data
m_BakeState = BakeState.Occlusion;
int volumeDensity = m_VolumeMode == VolumeMode.Automatic ? m_VolumeDensity : 1;
VolumeData[] smallestVolumes = Utils.GetLowestSubdivisionVolumes(m_VolumeData, volumeDensity);
for (int i = 0; i < smallestVolumes.Length; i++)
{
m_Completion = (float)(i + 1) / (float)smallestVolumes.Length;
m_ActiveVolume = smallestVolumes[i];
yield return(EditorCoroutines.StartCoroutine(Utils.BuildOcclusionForVolume(smallestVolumes[i].bounds, m_RayDensity, m_StaticRenderers, m_Occluders, value => smallestVolumes[i].renderers = value, this, m_FilterAngle), this));
}
m_BakeState = BakeState.Active;
}
else
{
Debug.LogError("Occlusion Bake Failed. Check Settings.");
m_BakeState = BakeState.Empty;
m_Completion = 0;
}
m_ActiveVolume = null;
yield return(null);
}
private void Update()
{
if (m_VolumeData == null)
{
return;
}
if (Utils.GetActiveVolumeAtPosition(m_VolumeData, Camera.main.transform.position, out m_ActiveVolume))
{
if (m_ActiveVolume != m_PreviousVolume) // TODO - Disable for runtime optimisation
{
m_PreviousVolume = m_ActiveVolume;
UpdateOcclusion();
}
}
}
private static void DrawHierarchicalVolumeGridRecursive(VolumeData data, VolumeData activeVolume)
{
if (data.children != null && data.children.Length > 0)
{
for (int i = 0; i < data.children.Length; i++)
{
DrawHierarchicalVolumeGridRecursive(data.children[i], activeVolume);
}
}
else
{
bool isActive = data == activeVolume;
Gizmos.color = isActive ? DebugColors.volumeActive[0] : DebugColors.volume[0];
Gizmos.DrawWireCube(data.bounds.center, data.bounds.size);
Gizmos.color = isActive ? DebugColors.volumeActive[1] : DebugColors.volume[1];
Gizmos.DrawCube(data.bounds.center, data.bounds.size);
}
}
public static VolumeData[] GetLowestSubdivisionVolumes(VolumeData data, int density)
{
int finalSubdivisionVolumeCount = (int)Mathf.Pow(density, 8);
List <VolumeData> dataCollection = new List <VolumeData>();
int count = 0;
if (count < density)
{
for (int i = 0; i < data.children.Length; i++)
{
GetLowestSubdivisionVolumesRecursive(count, density, data.children[i], ref dataCollection);
}
}
else
{
dataCollection.Add(data);
}
return(dataCollection.ToArray());
}
private void ClearVolumeData()
{
m_VolumeData = null;
}
private static void GetLowestSubdivisionVolumesRecursive(int count, int density, VolumeData volume, ref List <VolumeData> dataCollection)
{
count++;
if (count < density)
{
for (int i = 0; i < volume.children.Length; i++)
{
GetLowestSubdivisionVolumesRecursive(count, density, volume.children[i], ref dataCollection);
}
}
else
{
dataCollection.Add(volume);
}
}