public void UpdateVertexData(bool positions, bool deltas, Rectangle rect, bool cpuData)
{
if (rect.Left <= mBoundaryX || rect.Right > mOffsetX
|| rect.Top <= mBoundaryY || rect.Bottom > mOffsetY)
{
// Do we have vertex data?
if (mVertexDataRecord != null)
{
// Trim to our bounds
Rectangle updateRect = new Rectangle(mOffsetX, mOffsetY, mBoundaryX, mBoundaryY);
updateRect.Left = System.Math.Max(updateRect.Left, rect.Left);
updateRect.Right = System.Math.Min(updateRect.Right, rect.Right);
updateRect.Top = System.Math.Max(updateRect.Top, rect.Top);
updateRect.Bottom = System.Math.Min(updateRect.Bottom, rect.Bottom);
// update the GPU buffer directly
#warning TODO: do we have no use for CPU vertex data after initial load?
// if so, destroy it to free RAM, this should be fast enough to
// to direct
HardwareVertexBuffer posbuf = null, deltabuf = null;
VertexData targetData = cpuData ?
mVertexDataRecord.CpuVertexData : mVertexDataRecord.GpuVertexData;
if (positions)
posbuf = targetData.vertexBufferBinding.GetBuffer((short)POSITION_BUFFER);
if (deltas)
deltabuf = targetData.vertexBufferBinding.GetBuffer((short)DELTA_BUFFER);
UpdateVertexBuffer(posbuf, deltabuf, updateRect);
}
// pass on to children
if (!IsLeaf)
{
for (int i = 0; i < 4; i++)
{
mChildren[i].UpdateVertexData(positions, deltas, rect, cpuData);
// merge bounds from children
AxisAlignedBox childBox = new AxisAlignedBox(mChildren[i].AABB);
// this box is relative to child centre
Vector3 boxoffset = mChildren[i].LocalCentre - LocalCentre;
childBox.Minimum = childBox.Minimum + boxoffset;
childBox.Maximum = childBox.Maximum + boxoffset;
mAABB.Merge(childBox);
}
}
if (mRend != null)
mRend.ParentSceneNode.NeedUpdate();
// Make sure node knows to update
/* if (mMovable != null)
mMovable.ParentSceneNode.NeedUpdate();*/
}
}
/// <summary>
