private BabylonNode ExportMesh(IIGameScene scene, IIGameNode meshNode, BabylonScene babylonScene)
{
if (IsMeshExportable(meshNode) == false)
{
return(null);
}
logger?.RaiseMessage(meshNode.Name, 1);
if (!exportParameters.keepInstances)
{
return(ExportMasterMesh(scene, meshNode, babylonScene));
}
else
{
// Instances
#if MAX2020 || MAX2021 || MAX2022
var tabs = Loader.Global.INodeTab.Create();
#else
var tabs = Loader.Global.NodeTab.Create();
#endif
Loader.Global.IInstanceMgr.InstanceMgr.GetInstances(meshNode.MaxNode, tabs);
if (tabs.Count > 1)
{
IINode Master = TabToList <IINode>(tabs)[tabs.Count - 1];
List <IINode> Instances = TabToList <IINode>(tabs).FindAll(x => x.Handle != Master.Handle);
foreach (IINode instanceNode in tabs.ToIEnumerable())
{
//this make sure every instance node is indexed in guid dictionary
Tools.GetGuid(instanceNode);
}
BabylonMesh babylonMasterMesh = babylonScene.MeshesList.Find(mesh => mesh.id == Master.GetGuid().ToString());
if (babylonMasterMesh == null)
{
return(ExportMasterMesh(scene, meshNode, babylonScene));
}
else
{
return(ExportInstanceMesh(scene, meshNode, babylonScene, babylonMasterMesh));
}
}
return(ExportMasterMesh(scene, meshNode, babylonScene));
}
}
private BabylonNode ExportMesh(IIGameScene scene, IIGameNode meshNode, BabylonScene babylonScene)
{
if (IsMeshExportable(meshNode) == false)
{
return(null);
}
RaiseMessage(meshNode.Name, 1);
// Instances
#if MAX2020
var tabs = Loader.Global.INodeTab.Create();
#else
var tabs = Loader.Global.NodeTab.Create();
#endif
Loader.Global.IInstanceMgr.InstanceMgr.GetInstances(meshNode.MaxNode, tabs);
if (tabs.Count > 1)
{
foreach (IINode instanceNode in Tools.ITabToIEnumerable(tabs))
{
//this make sure every instance node is indexed in guid dictionary
Tools.GetGuid(instanceNode);
}
// For a mesh with instances, we distinguish between master and instance meshes:
// - a master mesh stores all the info of the mesh (transform, hierarchy, animations + vertices, indices, materials, bones...)
// - an instance mesh only stores the info of the node (transform, hierarchy, animations)
// Check if this mesh has already been exported
List <BabylonMesh> babylonMasterMeshes = new List <BabylonMesh>();
var index = 0;
while (index < tabs.Count)
{
#if MAX2017 || MAX2018 || MAX2019 || MAX2020
var tab = tabs[index];
#else
var tab = tabs[new IntPtr(index)];
#endif
Guid nodeGuid = Tools.guids.FirstOrDefault(x => x.Value == tab).Key;
babylonMasterMeshes.AddRange(babylonScene.MeshesList.FindAll(_babylonMesh => {
// Same id
return(_babylonMesh.id == nodeGuid.ToString() &&
// Mesh is not a dummy
_babylonMesh.isDummy == false);
}));
index++;
}
if (babylonMasterMeshes.Count > 0)
{
// Mesh already exported
// Export this node as instance
// Check if we need to export this instance as an instance mesh.
// If there is already an exported mesh in the scene that shares this mesh's material, then export it as an instance.
BabylonMesh babylonMasterMesh = null;
foreach (var mesh in babylonMasterMeshes)
{
if (mesh.materialId == null || (meshNode.NodeMaterial != null && meshNode.NodeMaterial.MaxMaterial.GetGuid().ToString().Equals(mesh.materialId)))
{
babylonMasterMesh = mesh;
}
}
if (babylonMasterMesh != null)
{
return(ExportInstanceMesh(scene, meshNode, babylonScene, babylonMasterMesh));
}
return(ExportMasterMesh(scene, meshNode, babylonScene));
}
}
return(ExportMasterMesh(scene, meshNode, babylonScene));
}