/// <summary>
///
/// </summary>
/// <param name="group"></param>
/// <param name="entity"></param>
protected ImpostorTexture(ImpostorPage group, Entity entity)
{
//Store scene manager and entity
mSceneMgr = group.SceneManager;
mEntity = entity;
//Add self to list of ImpostorTexture's
mEntityKey = ImpostorBatch.GenerateEntityKey(entity);
mSelfList.Add(mEntityKey, this);
//Calculate the entity's bounding box and it's diameter
mBoundingBox = entity.BoundingBox;
//Note - this radius calculation assumes the object is somewhat rounded (like trees/rocks/etc.)
float tmp = 0;
mEntityRadius = mBoundingBox.Maximum.x - mBoundingBox.Center.x;
tmp = mBoundingBox.Maximum.y - mBoundingBox.Center.y;
if (tmp > mEntityRadius) mEntityRadius = tmp;
tmp = mBoundingBox.Maximum.z - mBoundingBox.Center.z;
if (tmp > mEntityRadius) mEntityRadius = tmp;
mEntityDiameter = 2.0f * mEntityRadius;
mEntityCenter = mBoundingBox.Center;
//Render impostor textures
RenderTextures(false);
//Set up materials
for (int o = 0; o < ImpostorYawAngles; o++)
{
for (int i = 0; i < ImpostorPitchAngles; i++)
{
mMaterial[i, o] = (Material)MaterialManager.Instance.Create(GetUniqueID("ImpostorMaterial"), "Impostors");
Material m = mMaterial[i, o];
Pass p = m.GetTechnique(0).GetPass(0);
TextureUnitState t = p.CreateTextureUnitState(mTexture.Name);
t.TextureScrollU = (float)(o / ImpostorYawAngles);
t.TextureScrollV = (float)(i / ImpostorPitchAngles);
p.LightingEnabled = false;
m.ReceiveShadows = false;
if (group.BlendMode == ImpostorBlendMode.AlphaReject)
{
p.AlphaRejectFunction = CompareFunction.GreaterEqual;
p.AlphaRejectValue = 128;
}
else if (group.BlendMode == ImpostorBlendMode.AlphaBlend)
{
p.SetSceneBlending(SceneBlendFactor.SourceAlpha, SceneBlendFactor.OneMinusSourceAlpha);
}
}
}
}
/// <summary>
///
/// </summary>
/// <param name="group"></param>
/// <param name="entity"></param>
protected ImpostorBatch(ImpostorPage group, Entity entity)
{
//Render impostor texture for this entity
mTex = ImpostorTexture.GetTexture(group, entity);
//Create billboard set
mBBSet = new StaticBillboardSet(group.SceneManager, group.PagedGeometry.SceneNode);
mBBSet.SetTextureStacksAndSlices(ImpostorTexture.ImpostorPitchAngles, ImpostorTexture.ImpostorYawAngles);
BillboardOrigin = ImpostorPage.ImpostorPivot;
//Default the angle to 0 degrees
mPitchIndex = -1;
mYawIndex = -1;
SetAngle(0.0f, 0.0f);
}
/// <summary>
///
/// </summary>
/// <param name="group"></param>
/// <param name="entity"></param>
/// <returns></returns>
public static ImpostorTexture GetTexture(ImpostorPage group, Entity entity)
{
//Search for an existing impostor texture for the given entity
string entityKey = ImpostorBatch.GenerateEntityKey(entity);
ImpostorTexture texture = null;
if (!mSelfList.TryGetValue(entityKey, out texture))
{
if (group != null)
{
texture = new ImpostorTexture(group, entity);
}
}
return(texture);
}
/// <summary>
///
/// </summary>
/// <param name="group"></param>
/// <param name="entity"></param>
/// <returns></returns>
public static ImpostorBatch GetBatch(ImpostorPage group, Entity entity)
{
//Search for an existing impostor batch for this entity
string entityKey = GenerateEntityKey(entity);
ImpostorBatch batch = null;
if (!group.mImpostorBatches.TryGetValue(entityKey, out batch))
{
//Otherwise, create a new batch
batch = new ImpostorBatch(group, entity);
//Add it to the impostorBatches list
group.mImpostorBatches.Add(entityKey, batch);
}
return(batch);
}
/// <summary>
///
/// </summary>
/// <param name="group"></param>
/// <param name="entity"></param>
protected ImpostorBatch(ImpostorPage group, Entity entity)
{
//Render impostor texture for this entity
mTex = ImpostorTexture.GetTexture(group, entity);
//Create billboard set
mBBSet = new StaticBillboardSet(group.SceneManager, group.PagedGeometry.SceneNode);
mBBSet.SetTextureStacksAndSlices(ImpostorTexture.ImpostorPitchAngles, ImpostorTexture.ImpostorYawAngles);
BillboardOrigin = ImpostorPage.ImpostorPivot;
//Default the angle to 0 degrees
mPitchIndex = -1;
mYawIndex = -1;
SetAngle(0.0f, 0.0f);
}
/// <summary>
///
/// </summary>
/// <param name="group"></param>
/// <param name="entity"></param>
/// <returns></returns>
public static ImpostorBatch GetBatch(ImpostorPage group, Entity entity)
{
//Search for an existing impostor batch for this entity
string entityKey = GenerateEntityKey(entity);
ImpostorBatch batch = null;
if (!group.mImpostorBatches.TryGetValue(entityKey, out batch))
{
//Otherwise, create a new batch
batch = new ImpostorBatch(group, entity);
//Add it to the impostorBatches list
group.mImpostorBatches.Add(entityKey, batch);
}
return batch;
}
/// <summary>
///
/// </summary>
/// <param name="group"></param>
/// <param name="entity"></param>
/// <returns></returns>
public static ImpostorTexture GetTexture(ImpostorPage group, Entity entity)
{
//Search for an existing impostor texture for the given entity
string entityKey = ImpostorBatch.GenerateEntityKey(entity);
ImpostorTexture texture = null;
if (!mSelfList.TryGetValue(entityKey, out texture))
{
if (group != null)
{
texture = new ImpostorTexture(group, entity);
}
}
return texture;
}
/// <summary>
///
/// </summary>
/// <param name="group"></param>
/// <param name="entity"></param>
protected ImpostorTexture(ImpostorPage group, Entity entity)
{
//Store scene manager and entity
mSceneMgr = group.SceneManager;
mEntity = entity;
//Add self to list of ImpostorTexture's
mEntityKey = ImpostorBatch.GenerateEntityKey(entity);
mSelfList.Add(mEntityKey, this);
//Calculate the entity's bounding box and it's diameter
mBoundingBox = entity.BoundingBox;
//Note - this radius calculation assumes the object is somewhat rounded (like trees/rocks/etc.)
float tmp = 0;
mEntityRadius = mBoundingBox.Maximum.x - mBoundingBox.Center.x;
tmp = mBoundingBox.Maximum.y - mBoundingBox.Center.y;
if (tmp > mEntityRadius)
{
mEntityRadius = tmp;
}
tmp = mBoundingBox.Maximum.z - mBoundingBox.Center.z;
if (tmp > mEntityRadius)
{
mEntityRadius = tmp;
}
mEntityDiameter = 2.0f * mEntityRadius;
mEntityCenter = mBoundingBox.Center;
//Render impostor textures
RenderTextures(false);
//Set up materials
for (int o = 0; o < ImpostorYawAngles; o++)
{
for (int i = 0; i < ImpostorPitchAngles; i++)
{
mMaterial[i, o] = (Material)MaterialManager.Instance.Create(GetUniqueID("ImpostorMaterial"), "Impostors");
Material m = mMaterial[i, o];
Pass p = m.GetTechnique(0).GetPass(0);
TextureUnitState t = p.CreateTextureUnitState(mTexture.Name);
t.TextureScrollU = (float)(o / ImpostorYawAngles);
t.TextureScrollV = (float)(i / ImpostorPitchAngles);
p.LightingEnabled = false;
m.ReceiveShadows = false;
if (group.BlendMode == ImpostorBlendMode.AlphaReject)
{
p.AlphaRejectFunction = CompareFunction.GreaterEqual;
p.AlphaRejectValue = 128;
}
else if (group.BlendMode == ImpostorBlendMode.AlphaBlend)
{
p.SetSceneBlending(SceneBlendFactor.SourceAlpha, SceneBlendFactor.OneMinusSourceAlpha);
}
}
}
}
/// <summary>
///
/// </summary>
/// <param name="bounds"></param>
/// <returns></returns>
internal void InitPages <T>(TBounds bounds)
{
// Calculate grid size, if left is Real minimum, it means that bounds are infinite
// scrollBuffer is used as a flag. If it is allocated than infinite bounds are used
// !!! Two cases are required because of the way scrolling is implemented
// if it is redesigned it would allow to use the same functionality.
if (bounds.Width < 0.00001f)
{
// In case of infinite bounds bounding rect needs to be calculated in a different manner, since
// it represents local bounds, which are shifted along with the player's movements around the world.
mGeomGridX = (int)((2 * mFarTransDist / mMainGeom.PageSize) + 4);
mGridBounds.Top = 0;
mGridBounds.Left = 0;
mGridBounds.Right = mGeomGridX * mMainGeom.PageSize;
mGridBounds.Bottom = mGeomGridX * mMainGeom.PageSize;
// Allocate scroll buffer (used in scrolling the grid)
mScrollBuffer = new GeometryPage[mGeomGridX];
//Note: All this padding and transition preparation is performed because even in infinite
//mode, a local grid size must be chosen. Unfortunately, this also means that view ranges
//and transition lengths cannot be exceeded dynamically with set functions.
}
else
{
//Bounded mode
mGridBounds = bounds;
// In case the devision does not give the round number use the next largest integer
mGeomGridX = (int)System.Math.Ceiling(mGridBounds.Width / mMainGeom.PageSize);
}
mGeomGridZ = mGeomGridX;//Note: geomGridX == geomGridZ; Need to merge.
//Allocate grid array
mGeomGrid = new GeometryPage[mGeomGridX * mGeomGridZ];
for (int x = 0; x < mGeomGridX; ++x)
{
for (int z = 0; z < mGeomGridZ; ++z)
{
GeometryPage p = null;
Type t = typeof(T);
switch (t.Name)
{
case "GrassPage":
p = new GrassPage();
break;
case "BatchPage":
p = new BatchPage();
break;
case "ImpostorPage":
p = new ImpostorPage();
break;
default:
throw new Exception("This GeometryPage is Unkown!,GeometryPageManager.Update!");
break;
}
p.Init(mMainGeom);
float cx = 0, cy = 0, cz = 0;
// 0,0 page is located at (gridBounds.left,gridBounds.top) corner of the bounds
cx = ((x + 0.5f) * mMainGeom.PageSize) + mGridBounds.Left;
cz = ((z + 0.5f) * mMainGeom.PageSize) + mGridBounds.Top;
cy = 0.0f;
p.CenterPoint = new Vector3(cx, cy, cz);
p.mXIndex = x;
p.mZIndex = z;
p.mInactiveTime = 0;
p.mIsLoaded = false;
p.mNeedsUnload = false;
p.mIsPending = false;
p.mIsVisible = false;
p.mUserData = null;
p.ClearBoundingBox();
SetGridPage(x, z, p);
}
}
}
