/// <summary>
/// Copies the supplied mesh data into the reusedMeshesForMarhsalling array. All managed arrays
/// are pinned so that the marshalling only needs to pass a pointer and the native code can
/// reference the memory in place without needing the marshaller to create a complete copy of
/// the data.
/// </summary>
private static IntPtr PinMeshDataForMarshalling(List <MeshData> meshes)
{
// if we have a big enough array reuse it, otherwise create new
if (reusedMeshesForMarshalling == null || reusedMeshesForMarshalling.Length < meshes.Count)
{
reusedMeshesForMarshalling = new DLLImports.MeshData[meshes.Count];
}
for (int i = 0; i < meshes.Count; ++i)
{
reusedMeshesForMarshalling[i] = new DLLImports.MeshData()
{
transform = meshes[i].Transform,
vertCount = meshes[i].Verts.Length,
indexCount = meshes[i].Indices.Length,
verts = PinObject(meshes[i].Verts),
normals = PinObject(meshes[i].Normals),
indices = PinObject(meshes[i].Indices),
};
}
return(PinObject(reusedMeshesForMarshalling));
}
/// <summary>
/// Copies the supplied mesh data into the reusedMeshesForMarhsalling array. All managed arrays
/// are pinned so that the marshalling only needs to pass a pointer and the native code can
/// reference the memory in place without needing the marshaller to create a complete copy of
/// the data.
/// </summary>
private static IntPtr PinMeshDataForMarshalling(List<MeshData> meshes)
{
// if we have a big enough array reuse it, otherwise create new
if (reusedMeshesForMarshalling == null || reusedMeshesForMarshalling.Length < meshes.Count)
{
reusedMeshesForMarshalling = new DLLImports.MeshData[meshes.Count];
}
for (int i = 0; i < meshes.Count; ++i)
{
reusedMeshesForMarshalling[i] = new DLLImports.MeshData()
{
transform = meshes[i].Transform,
vertCount = meshes[i].Verts.Length,
indexCount = meshes[i].Indices.Length,
verts = PinObject(meshes[i].Verts),
normals = PinObject(meshes[i].Normals),
indices = PinObject(meshes[i].Indices),
};
}
return PinObject(reusedMeshesForMarshalling);
}
