/// <summary>Let the mesh know it's about to undergo a layout routine.
/// <see cref="PowerUI.Renderman.Layout"/>.</summary>
public void PrepareForLayout()
{
// Release the buffers back to the pool:
MeshDataBufferPool.Return(FirstBuffer, LastBuffer);
// Clear values:
FirstBuffer = null;
LastBuffer = null;
FullBufferCount = 0;
CurrentBufferBlocks = 0;
BlockCount = 0;
}
/// <summary>Gets the next vertex buffer.</summary>
public void NextBuffer()
{
// Get it:
BlockBuffer buffer = MeshDataBufferPool.GetBuffer();
buffer.Mesh = this;
if (Normals != null)
{
buffer.RequireNormals();
}
if (UV3 != null)
{
buffer.RequireUV3();
}
// Clear count:
CurrentBufferBlocks = 0;
if (FirstBuffer == null)
{
// Only one:
buffer.Previous = null;
buffer.Offset = 0;
buffer.BlocksBefore = 0;
FirstBuffer = LastBuffer = buffer;
}
else
{
// Filled one:
FullBufferCount++;
buffer.Offset = FullBufferCount * MeshDataBufferPool.VertexBufferSize;
buffer.BlocksBefore = FullBufferCount * MeshDataBufferPool.BlockCount;
// Add to end:
buffer.Previous = LastBuffer;
LastBuffer.Next = buffer;
LastBuffer = buffer;
}
}
