/// <summary>
/// Writes the managed data to the native value.
/// </summary>
/// <param name="thisPtr">Optional pointer to the memory that will hold the native value.</param>
/// <param name="nativeValue">Output native value</param>
void IMarshalable <Node, AiNode> .ToNative(IntPtr thisPtr, out AiNode nativeValue)
{
nativeValue = new AiNode(); // --------------------------------
nativeValue.Name = new AiString(m_name);
nativeValue.Transformation = AssimpConv.ConvertTransformToAssimp(m_transform);
nativeValue.Parent = IntPtr.Zero;
nativeValue.NumMeshes = (uint)m_meshes.Count;
nativeValue.Meshes = IntPtr.Zero;
#if WITH_NODE_METADATA
nativeValue.MetaData = IntPtr.Zero;
#endif
if (nativeValue.NumMeshes > 0)
{
nativeValue.Meshes = MemoryHelper.ToNativeArray <int>(m_meshes.ToArray());
}
//Now descend through the children
nativeValue.NumChildren = (uint)m_children.Count;
int numChildren = (int)nativeValue.NumChildren;
int stride = IntPtr.Size;
IntPtr childrenPtr = IntPtr.Zero;
if (numChildren > 0)
{
childrenPtr = MemoryHelper.AllocateMemory(numChildren * IntPtr.Size);
for (int i = 0; i < numChildren; i++)
{
IntPtr currPos = MemoryHelper.AddIntPtr(childrenPtr, stride * i);
Node child = m_children[i];
IntPtr childPtr = IntPtr.Zero;
//Recursively create the children and its children
if (child != null)
{
childPtr = ToNativeRecursive(thisPtr, child);
}
//Write the child's node ptr to our array
MemoryHelper.Write <IntPtr>(currPos, ref childPtr);
}
}
//Finally finish writing to the native struct
nativeValue.Children = childrenPtr;
}
/// <summary>
/// Reads the unmanaged data from the native value.
/// </summary>
/// <param name="nativeValue">Input native value</param>
void IMarshalable <Node, AiNode> .FromNative(ref AiNode nativeValue)
{
m_name = nativeValue.Name.GetString();
m_transform = AssimpConv.ConvertTransform(nativeValue.Transformation);
m_parent = null;
m_children.Clear();
m_meshes.Clear();
if (nativeValue.NumMeshes > 0 && nativeValue.Meshes != IntPtr.Zero)
{
m_meshes.AddRange(MemoryHelper.FromNativeArray <int>(nativeValue.Meshes, (int)nativeValue.NumMeshes));
}
if (nativeValue.NumChildren > 0 && nativeValue.Children != IntPtr.Zero)
{
m_children.AddRange(MemoryHelper.FromNativeArray <Node, AiNode>(nativeValue.Children, (int)nativeValue.NumChildren, true));
}
}
private IntPtr ToNativeRecursive(IntPtr parentPtr, Node node)
{
if (node == null)
{
return(IntPtr.Zero);
}
int sizeofNative = MemoryHelper.SizeOf <AiNode>();
//Allocate the memory that will hold the node
IntPtr nodePtr = MemoryHelper.AllocateMemory(sizeofNative);
//First fill the native struct
AiNode nativeValue = new AiNode();
nativeValue.Name = new AiString(node.m_name);
nativeValue.Transformation = AssimpConv.ConvertTransformToAssimp(node.m_transform);
nativeValue.Parent = parentPtr;
nativeValue.NumMeshes = (uint)node.m_meshes.Count;
nativeValue.Meshes = MemoryHelper.ToNativeArray <int>(node.m_meshes.ToArray());
#if WITH_NODE_METADATA
nativeValue.MetaData = IntPtr.Zero;
#endif
//Now descend through the children
nativeValue.NumChildren = (uint)node.m_children.Count;
int numChildren = (int)nativeValue.NumChildren;
int stride = IntPtr.Size;
IntPtr childrenPtr = IntPtr.Zero;
if (numChildren > 0)
{
childrenPtr = MemoryHelper.AllocateMemory(numChildren * IntPtr.Size);
for (int i = 0; i < numChildren; i++)
{
IntPtr currPos = MemoryHelper.AddIntPtr(childrenPtr, stride * i);
Node child = node.m_children[i];
IntPtr childPtr = IntPtr.Zero;
//Recursively create the children and its children
if (child != null)
{
childPtr = ToNativeRecursive(nodePtr, child);
}
//Write the child's node ptr to our array
MemoryHelper.Write <IntPtr>(currPos, ref childPtr);
}
}
//Finall finish writing to the native struct, and write the whole thing to the memory we allocated previously
nativeValue.Children = childrenPtr;
MemoryHelper.Write <AiNode>(nodePtr, ref nativeValue);
return(nodePtr);
}
