/// <summary>
///
/// </summary>
public override void Update()
{
//Calculate the direction the impostor batches should be facing
Vector3 camPos = mGeom.ConvertToLocal(mGeom.Camera.DerivedPosition);
//Update all batches
float distX = camPos.x - mCenter.x;
float distZ = camPos.z - mCenter.z;
float distY = camPos.y - mCenter.y;
float distRelZ = MogreLibMath.Utility.Sqrt(distX * distX + distZ * distZ);
Radian pitch = MogreLibMath.Utility.ATan2(distY, distZ);
Radian yaw;
if (distRelZ > mGeom.PageSize * 3)
{
yaw = MogreLibMath.Utility.ATan2(distY, distZ);
}
else
{
Vector3 dir = mGeom.ConvertToLocal(mGeom.Camera.DerivedDirection);
yaw = MogreLibMath.Utility.ATan2(-distX, -distZ);
}
foreach (ImpostorBatch batch in mImpostorBatches.Values)
{
batch.SetAngle((float)pitch.InDegrees, (float)yaw.InDegrees);
}
}
/// <summary>
///
/// </summary>
/// <param name="entity"></param>
/// <param name="position"></param>
/// <param name="yaw"></param>
/// <param name="scale"></param>
/// <param name="userData"></param>
public void AddTree(Entity entity, Vector3 position, Degree yaw, float scale, object userData)
{
//First convert the coordinate to PagedGeometry's local system
Vector3 pos = mGeom.ConvertToLocal(position);
//If the tree is slightly out of bounds (due to imprecise coordinate conversion), fix it
if (pos.x < mActualBounds.Left)
{
pos.x = mActualBounds.Left;
}
else if (pos.x > mActualBounds.Right)
{
pos.x = mActualBounds.Right;
}
if (pos.z < mActualBounds.Top)
{
pos.z = mActualBounds.Top;
}
else if (pos.z > mActualBounds.Bottom)
{
pos.z = mActualBounds.Bottom;
}
float x = pos.x;
float z = pos.z;
//Check that the tree is within bounds (DEBUG)
float smallVal = 0.01f;
if (pos.x < mActualBounds.Left - smallVal || pos.x > mActualBounds.Right + smallVal || pos.z < mActualBounds.Top - smallVal || pos.z > mActualBounds.Bottom + smallVal)
{
throw new Exception("Tree position is out of bounds");
}
if (scale < mMinimumScale || scale > mMaximumScale)
{
throw new Exception("Tree scale out of range");
}
//Find the appropriate page grid for the entity
List <List <TreeDef> > pageGrid = null;
if (!mPageGridList.TryGetValue(entity, out pageGrid))
{
//If it does not exist, create a new page grid
pageGrid = new List <List <TreeDef> >();
for (int i = 0; i < (mPageGridX * mPageGridZ); i++)
{
pageGrid.Add(new List <TreeDef>());
}
//Register the new page grid in the pageGridList for later retrieval
mPageGridList.Add(entity, pageGrid);
}
//Calculate the gridbounds-relative position of the tree
float xrel = x - mGridBounds.Left;
float zrel = z - mGridBounds.Top;
//Get the appropriate grid element based on the new tree's position
int pageX = (int)System.Math.Floor(xrel / mPageSize);
int pageZ = (int)System.Math.Floor(zrel / mPageSize);
List <TreeDef> treeList = GetGridPage(pageGrid, pageX, pageZ);
//Create the new tree
TreeDef tree = new TreeDef();
tree.XPos = (short)(65535 * (xrel - (pageX * mPageSize)) / mPageSize);
tree.ZPos = (short)(65535 * (zrel - (pageZ * mPageSize)) / mPageSize);
tree.Rotation = (byte)(255 * ((Real)yaw / 360.0f));
tree.Scale = (byte)(255 * ((scale - mMinimumScale) / mMaximumScale));
tree.UserData = userData;
//Add it to the tree list
treeList.Add(tree);
//Rebuild geometry if necessary
mGeom.ReloadGeometryPage(new Vector3(x, 0, z));
}