/// <summary>
/// Generates the LODs for this object.
/// </summary>
/// <param name="statusCallback">The status report callback.</param>
public void GenerateLODs(LODStatusReportCallback statusCallback = null)
{
if (levels != null)
{
LODGenerator.GenerateLODs(gameObject, levels, statusCallback);
}
generated = true;
}
/// <summary>
/// Generates the LODs and sets up a LOD Group for the specified game object.
/// </summary>
/// <param name="gameObj">The game object to set up.</param>
/// <param name="levels">The LOD levels.</param>
/// <param name="statusCallback">The optional status report callback.</param>
public static void GenerateLODs(GameObject gameObj, LODSettings[] levels, LODStatusReportCallback statusCallback = null)
{
DestroyLODs(gameObj);
var transform = gameObj.transform;
var meshRenderers = gameObj.GetComponentsInChildren <MeshRenderer>();
var skinnedRenderers = gameObj.GetComponentsInChildren <SkinnedMeshRenderer>();
// Check if there's anything to do
if (meshRenderers.Length == 0 && skinnedRenderers.Length == 0)
{
return;
}
var lodsParentObj = new GameObject(ParentGameObjectName);
var lodsParent = lodsParentObj.transform;
lodsParent.parent = transform;
lodsParent.localPosition = Vector3.zero;
lodsParent.localRotation = Quaternion.identity;
lodsParent.localScale = Vector3.one;
var lodGroup = gameObj.GetComponent <LODGroup>();
if (lodGroup == null)
{
lodGroup = gameObj.AddComponent <LODGroup>();
}
float screenRelativeTransitionHeight = 0.5f;
LOD[] lodLevels = new LOD[levels.Length + 1];
var firstLevelRenderers = CombineRenderers(meshRenderers, skinnedRenderers);
lodLevels[0] = new LOD(screenRelativeTransitionHeight, firstLevelRenderers);
screenRelativeTransitionHeight *= 0.5f;
float minimumQuality = 1f;
for (int levelIndex = 0; levelIndex < levels.Length; levelIndex++)
{
var level = levels[levelIndex];
float quality = Mathf.Clamp(level.quality, 0.01f, minimumQuality);
screenRelativeTransitionHeight *= quality * quality;
GameObject lodObj = new GameObject(string.Format("Level{0}", levelIndex));
var lodParent = lodObj.transform;
lodParent.parent = lodsParent;
lodParent.localPosition = Vector3.zero;
lodParent.localRotation = Quaternion.identity;
lodParent.localScale = Vector3.one;
DecimationAlgorithm.StatusReportCallback levelStatusCallback = null;
if (statusCallback != null)
{
levelStatusCallback = (iteration, originalTris, currentTris, targetTris) =>
{
statusCallback.Invoke(levelIndex, iteration, originalTris, currentTris, targetTris);
};
}
GameObject staticLodObj = lodObj;
GameObject skinnedLodObj = lodObj;
Transform staticLodParent = lodParent;
Transform skinnedLodParent = lodParent;
if (meshRenderers.Length > 0 && skinnedRenderers.Length > 0)
{
staticLodObj = new GameObject("Static", typeof(MeshFilter), typeof(MeshRenderer));
staticLodParent = staticLodObj.transform;
staticLodParent.parent = lodParent;
staticLodParent.localPosition = Vector3.zero;
staticLodParent.localRotation = Quaternion.identity;
staticLodParent.localScale = Vector3.one;
skinnedLodObj = new GameObject("Skinned", typeof(SkinnedMeshRenderer));
skinnedLodParent = skinnedLodObj.transform;
skinnedLodParent.parent = lodParent;
skinnedLodParent.localPosition = Vector3.zero;
skinnedLodParent.localRotation = Quaternion.identity;
skinnedLodParent.localScale = Vector3.one;
}
Renderer[] staticLodRenderers = null;
Renderer[] skinnedLodRenderers = null;
if (meshRenderers.Length > 0)
{
if (level.combineMeshes)
{
Material[] materials;
Mesh lodMesh = GenerateStaticLOD(transform, meshRenderers, quality, out materials, levelStatusCallback);
lodMesh.name = string.Format("{0}_static{1}", gameObj.name, levelIndex);
var meshFilter = staticLodObj.AddComponent <MeshFilter>();
meshFilter.sharedMesh = lodMesh;
var lodRenderer = staticLodObj.AddComponent <MeshRenderer>();
lodRenderer.sharedMaterials = materials;
SetupLODRenderer(lodRenderer, level);
staticLodRenderers = new Renderer[] { lodRenderer };
}
else
{
staticLodRenderers = new Renderer[meshRenderers.Length];
Material[] materials;
for (int rendererIndex = 0; rendererIndex < meshRenderers.Length; rendererIndex++)
{
var renderer = meshRenderers[rendererIndex];
Mesh lodMesh = GenerateStaticLOD(transform, renderer, quality, out materials, levelStatusCallback);
lodMesh.name = string.Format("{0}_static{1}_{2}", gameObj.name, levelIndex, rendererIndex);
var rendererLodObj = new GameObject(renderer.name, typeof(MeshFilter), typeof(MeshRenderer));
rendererLodObj.transform.parent = staticLodParent;
rendererLodObj.transform.localPosition = Vector3.zero;
rendererLodObj.transform.localRotation = Quaternion.identity;
rendererLodObj.transform.localScale = Vector3.one;
var meshFilter = rendererLodObj.GetComponent <MeshFilter>();
meshFilter.sharedMesh = lodMesh;
var lodRenderer = rendererLodObj.GetComponent <MeshRenderer>();
lodRenderer.sharedMaterials = materials;
SetupLODRenderer(lodRenderer, level);
staticLodRenderers[rendererIndex] = lodRenderer;
}
}
}
if (skinnedRenderers.Length > 0)
{
if (level.combineMeshes)
{
Transform[] bones;
Material[] materials;
Mesh lodMesh = GenerateSkinnedLOD(transform, skinnedRenderers, quality, out materials, out bones, levelStatusCallback);
lodMesh.name = string.Format("{0}_skinned{1}", gameObj.name, levelIndex);
Transform rootBone = FindRootBone(transform, bones);
var lodRenderer = skinnedLodObj.AddComponent <SkinnedMeshRenderer>();
lodRenderer.sharedMesh = lodMesh;
lodRenderer.sharedMaterials = materials;
lodRenderer.rootBone = rootBone;
lodRenderer.bones = bones;
SetupLODRenderer(lodRenderer, level);
skinnedLodRenderers = new Renderer[] { lodRenderer };
}
else
{
skinnedLodRenderers = new Renderer[skinnedRenderers.Length];
Transform[] bones;
Material[] materials;
for (int rendererIndex = 0; rendererIndex < skinnedRenderers.Length; rendererIndex++)
{
var renderer = skinnedRenderers[rendererIndex];
Mesh lodMesh = GenerateSkinnedLOD(transform, renderer, quality, out materials, out bones, levelStatusCallback);
lodMesh.name = string.Format("{0}_skinned{1}_{2}", gameObj.name, levelIndex, rendererIndex);
Transform rootBone = FindRootBone(transform, bones);
var rendererLodObj = new GameObject(renderer.name, typeof(SkinnedMeshRenderer));
rendererLodObj.transform.parent = skinnedLodParent;
rendererLodObj.transform.localPosition = Vector3.zero;
rendererLodObj.transform.localRotation = Quaternion.identity;
rendererLodObj.transform.localScale = Vector3.one;
var lodRenderer = rendererLodObj.GetComponent <SkinnedMeshRenderer>();
lodRenderer.sharedMesh = lodMesh;
lodRenderer.sharedMaterials = materials;
lodRenderer.rootBone = rootBone;
lodRenderer.bones = bones;
SetupLODRenderer(lodRenderer, level);
skinnedLodRenderers[rendererIndex] = lodRenderer;
}
}
}
Renderer[] lodRenderers;
if (staticLodRenderers != null && skinnedLodRenderers != null)
{
lodRenderers = staticLodRenderers.Concat <Renderer>(skinnedLodRenderers).ToArray();
}
else if (staticLodRenderers != null)
{
lodRenderers = staticLodRenderers;
}
else if (skinnedLodRenderers != null)
{
lodRenderers = skinnedLodRenderers;
}
else
{
lodRenderers = new Renderer[0];
}
minimumQuality = quality;
lodLevels[levelIndex + 1] = new LOD(screenRelativeTransitionHeight, lodRenderers);
}
lodGroup.SetLODs(lodLevels);
}
