blender/source/gameengine/Converter/KX_BlenderSceneConverter.cpp

/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file gameengine/Converter/KX_BlenderSceneConverter.cpp
 *  \ingroup bgeconv
 */


#if defined(WIN32) && !defined(FREE_WINDOWS)
#pragma warning (disable:4786) // suppress stl-MSVC debug info warning
#endif

#include "KX_Scene.h"
#include "KX_GameObject.h"
#include "KX_BlenderSceneConverter.h"
#include "KX_IpoConvert.h"
#include "RAS_MeshObject.h"
#include "KX_PhysicsEngineEnums.h"
#include "PHY_IPhysicsEnvironment.h"
#include "KX_KetsjiEngine.h"
#include "KX_IPhysicsController.h"
#include "BL_Material.h"
#include "BL_ActionActuator.h"
#include "KX_BlenderMaterial.h"
#include "KX_PolygonMaterial.h"


#include "BL_System.h"

#include "DummyPhysicsEnvironment.h"

#include "KX_ConvertPhysicsObject.h"

#ifdef USE_BULLET
#include "CcdPhysicsEnvironment.h"
#endif

#include "KX_BlenderSceneConverter.h"
#include "KX_BlenderScalarInterpolator.h"
#include "BL_BlenderDataConversion.h"
#include "BlenderWorldInfo.h"
#include "KX_Scene.h"

/* This little block needed for linking to Blender... */
#ifdef WIN32
#include "BLI_winstuff.h"
#endif

/* This list includes only data type definitions */
#include "DNA_scene_types.h"
#include "DNA_world_types.h"
#include "BKE_main.h"

#include "BLI_math.h"

extern "C"
{
#include "DNA_object_types.h"
#include "DNA_curve_types.h"
#include "DNA_mesh_types.h"
#include "DNA_material_types.h"
#include "BLI_blenlib.h"
#include "MEM_guardedalloc.h"
#include "BKE_global.h"
#include "BKE_animsys.h"
#include "BKE_library.h"
#include "BKE_material.h" // BKE_material_copy
#include "BKE_mesh.h" // BKE_mesh_copy
#include "DNA_space_types.h"
#include "DNA_anim_types.h"
#include "RNA_define.h"
#include "../../blender/editors/include/ED_keyframing.h"
}

/* Only for dynamic loading and merging */
#include "RAS_BucketManager.h" // XXX cant stay
#include "KX_BlenderSceneConverter.h"
#include "BL_BlenderDataConversion.h"
#include "KX_MeshProxy.h"
#include "RAS_MeshObject.h"
extern "C" {
	#include "BKE_context.h"
	#include "BLO_readfile.h"
	#include "BKE_idcode.h"
	#include "BKE_report.h"
	#include "DNA_space_types.h"
	#include "DNA_windowmanager_types.h" /* report api */
	#include "../../blender/blenlib/BLI_linklist.h"
}

KX_BlenderSceneConverter::KX_BlenderSceneConverter(
							struct Main* maggie,
							class KX_KetsjiEngine* engine
							)
							: m_maggie(maggie),
							/*m_maggie_dyn(NULL),*/
							m_ketsjiEngine(engine),
							m_alwaysUseExpandFraming(false),
							m_usemat(false),
							m_useglslmat(false)
{
	tag_main(maggie, 0); /* avoid re-tagging later on */
	m_newfilename = "";
}


KX_BlenderSceneConverter::~KX_BlenderSceneConverter()
{
	// clears meshes, and hashmaps from blender to gameengine data
	int i;
	// delete sumoshapes
	

	int numAdtLists = m_map_blender_to_gameAdtList.size();
	for (i=0; i<numAdtLists; i++) {
		BL_InterpolatorList *adtList= *m_map_blender_to_gameAdtList.at(i);

		delete (adtList);
	}

	vector<pair<KX_Scene*,KX_WorldInfo*> >::iterator itw = m_worldinfos.begin();
	while (itw != m_worldinfos.end()) {
		delete (*itw).second;
		itw++;
	}

	vector<pair<KX_Scene*,RAS_IPolyMaterial*> >::iterator itp = m_polymaterials.begin();
	while (itp != m_polymaterials.end()) {
		delete (*itp).second;
		itp++;
	}

	// delete after RAS_IPolyMaterial
	vector<pair<KX_Scene*,BL_Material *> >::iterator itmat = m_materials.begin();
	while (itmat != m_materials.end()) {
		delete (*itmat).second;
		itmat++;
	}	


	vector<pair<KX_Scene*,RAS_MeshObject*> >::iterator itm = m_meshobjects.begin();
	while (itm != m_meshobjects.end()) {
		delete (*itm).second;
		itm++;
	}

#ifdef USE_BULLET
	KX_ClearBulletSharedShapes();
#endif

	/* free any data that was dynamically loaded */
	for (vector<Main*>::iterator it=m_DynamicMaggie.begin(); !(it==m_DynamicMaggie.end()); it++) {
		Main *main= *it;
		free_main(main);
	}

	m_DynamicMaggie.clear();
}

void KX_BlenderSceneConverter::SetNewFileName(const STR_String& filename)
{
	m_newfilename = filename;
}



bool KX_BlenderSceneConverter::TryAndLoadNewFile()
{
	bool result = false;

	// find the file
/*	if ()
	{
		result = true;
	}
	// if not, clear the newfilename
	else
	{
		m_newfilename = "";	
	}
*/
	return result;
}

Scene *KX_BlenderSceneConverter::GetBlenderSceneForName(const STR_String& name)
{
	Scene *sce;

	/**
	 * Find the specified scene by name, or the first
	 * scene if nothing matches (shouldn't happen).
	 */
	if ((sce= (Scene *)BLI_findstring(&m_maggie->scene, name.ReadPtr(), offsetof(ID, name) + 2)))
		return sce;

	for (vector<Main*>::iterator it=m_DynamicMaggie.begin(); !(it==m_DynamicMaggie.end()); it++) {
		Main *main= *it;

		if ((sce= (Scene *)BLI_findstring(&main->scene, name.ReadPtr(), offsetof(ID, name) + 2)))
			return sce;
	}

	return (Scene*)m_maggie->scene.first;

}
#include "KX_PythonInit.h"

#ifdef USE_BULLET

#include "LinearMath/btIDebugDraw.h"


struct	BlenderDebugDraw : public btIDebugDraw
{
	BlenderDebugDraw () :
		m_debugMode(0) 
	{
	}
	
	int m_debugMode;

	virtual void	drawLine(const btVector3& from,const btVector3& to,const btVector3& color)
	{
		if (m_debugMode >0)
		{
			MT_Vector3 kxfrom(from[0],from[1],from[2]);
			MT_Vector3 kxto(to[0],to[1],to[2]);
			MT_Vector3 kxcolor(color[0],color[1],color[2]);

			KX_RasterizerDrawDebugLine(kxfrom,kxto,kxcolor);
		}
	}
	
	virtual void	reportErrorWarning(const char* warningString)
	{

	}

	virtual void	drawContactPoint(const btVector3& PointOnB,const btVector3& normalOnB,float distance,int lifeTime,const btVector3& color)
	{
		//not yet
	}

	virtual void	setDebugMode(int debugMode)
	{
		m_debugMode = debugMode;
	}
	virtual int		getDebugMode() const
	{
		return m_debugMode;
	}
	///todo: find out if Blender can do this
	virtual void	draw3dText(const btVector3& location,const char* textString)
	{

	}
		
};

#endif

void KX_BlenderSceneConverter::ConvertScene(class KX_Scene* destinationscene,
											class RAS_IRenderTools* rendertools,
											class RAS_ICanvas* canvas)
{
	//find out which physics engine
	Scene *blenderscene = destinationscene->GetBlenderScene();

	e_PhysicsEngine physics_engine = UseBullet;
	bool useDbvtCulling = false;
	// hook for registration function during conversion.
	m_currentScene = destinationscene;
	destinationscene->SetSceneConverter(this);
	SG_SetActiveStage(SG_STAGE_CONVERTER);

	if (blenderscene)
	{
	
		switch (blenderscene->gm.physicsEngine)
		{
		case WOPHY_BULLET:
			{
				physics_engine = UseBullet;
				useDbvtCulling = (blenderscene->gm.mode & WO_DBVT_CULLING) != 0;
				break;
			}
			default:
			case WOPHY_NONE:
			{
				physics_engine = UseNone;
				break;
			}
		}
	}

	switch (physics_engine)
	{
#ifdef USE_BULLET
		case UseBullet:
			{
				CcdPhysicsEnvironment* ccdPhysEnv = new CcdPhysicsEnvironment(useDbvtCulling);
				ccdPhysEnv->setDebugDrawer(new BlenderDebugDraw());
				ccdPhysEnv->setDeactivationLinearTreshold(0.8f); // default, can be overridden by Python
				ccdPhysEnv->setDeactivationAngularTreshold(1.0f); // default, can be overridden by Python

				SYS_SystemHandle syshandle = SYS_GetSystem(); /*unused*/
				int visualizePhysics = SYS_GetCommandLineInt(syshandle,"show_physics",0);
				if (visualizePhysics)
					ccdPhysEnv->setDebugMode(btIDebugDraw::DBG_DrawWireframe|btIDebugDraw::DBG_DrawAabb|btIDebugDraw::DBG_DrawContactPoints|btIDebugDraw::DBG_DrawText|btIDebugDraw::DBG_DrawConstraintLimits|btIDebugDraw::DBG_DrawConstraints);
		
				//todo: get a button in blender ?
				//disable / enable debug drawing (contact points, aabb's etc)	
				//ccdPhysEnv->setDebugMode(1);
				destinationscene->SetPhysicsEnvironment(ccdPhysEnv);
				break;
			}
#endif
		default:
		case UseNone:
			physics_engine = UseNone;
			destinationscene ->SetPhysicsEnvironment(new DummyPhysicsEnvironment());
			break;
	}

	BL_ConvertBlenderObjects(m_maggie,
		destinationscene,
		m_ketsjiEngine,
		physics_engine,
		rendertools,
		canvas,
		this,
		m_alwaysUseExpandFraming
		);

	//These lookup are not needed during game
	m_map_blender_to_gameactuator.clear();
	m_map_blender_to_gamecontroller.clear();
	m_map_blender_to_gameobject.clear();

	//Clearing this lookup table has the effect of disabling the cache of meshes
	//between scenes, even if they are shared in the blend file.
	//This cache mecanism is buggy so I leave it disable and the memory leak
	//that would result from this is fixed in RemoveScene()
	m_map_mesh_to_gamemesh.clear();

#ifndef USE_BULLET
	/* quiet compiler warning */
	(void)useDbvtCulling;
#endif

}

// This function removes all entities stored in the converter for that scene
// It should be used instead of direct delete scene
// Note that there was some provision for sharing entities (meshes...) between
// scenes but that is now disabled so all scene will have their own copy
// and we can delete them here. If the sharing is reactivated, change this code too..
// (see KX_BlenderSceneConverter::ConvertScene)
void KX_BlenderSceneConverter::RemoveScene(KX_Scene *scene)
{
	int i, size;
	// delete the scene first as it will stop the use of entities
	delete scene;
	// delete the entities of this scene
	vector<pair<KX_Scene*,KX_WorldInfo*> >::iterator worldit;
	size = m_worldinfos.size();
	for (i=0, worldit=m_worldinfos.begin(); i<size; ) {
		if ((*worldit).first == scene) {
			delete (*worldit).second;
			*worldit = m_worldinfos.back();
			m_worldinfos.pop_back();
			size--;
		} else {
			i++;
			worldit++;
		}
	}

	vector<pair<KX_Scene*,RAS_IPolyMaterial*> >::iterator polymit;
	size = m_polymaterials.size();
	for (i=0, polymit=m_polymaterials.begin(); i<size; ) {
		if ((*polymit).first == scene) {
			delete (*polymit).second;
			*polymit = m_polymaterials.back();
			m_polymaterials.pop_back();
			size--;
		} else {
			i++;
			polymit++;
		}
	}

	vector<pair<KX_Scene*,BL_Material*> >::iterator matit;
	size = m_materials.size();
	for (i=0, matit=m_materials.begin(); i<size; ) {
		if ((*matit).first == scene) {
			delete (*matit).second;
			*matit = m_materials.back();
			m_materials.pop_back();
			size--;
		} else {
			i++;
			matit++;
		}
	}

	vector<pair<KX_Scene*,RAS_MeshObject*> >::iterator meshit;
	size = m_meshobjects.size();
	for (i=0, meshit=m_meshobjects.begin(); i<size; ) {
		if ((*meshit).first == scene) {
			delete (*meshit).second;
			*meshit = m_meshobjects.back();
			m_meshobjects.pop_back();
			size--;
		} else {
			i++;
			meshit++;
		}
	}
}

// use blender materials
void KX_BlenderSceneConverter::SetMaterials(bool val)
{
	m_usemat = val;
	m_useglslmat = false;
}

void KX_BlenderSceneConverter::SetGLSLMaterials(bool val)
{
	m_usemat = val;
	m_useglslmat = val;
}

bool KX_BlenderSceneConverter::GetMaterials()
{
	return m_usemat;
}

bool KX_BlenderSceneConverter::GetGLSLMaterials()
{
	return m_useglslmat;
}

void KX_BlenderSceneConverter::RegisterBlenderMaterial(BL_Material *mat)
{
	m_materials.push_back(pair<KX_Scene*,BL_Material *>(m_currentScene,mat));
}



void KX_BlenderSceneConverter::SetAlwaysUseExpandFraming(
	bool to_what)
{
	m_alwaysUseExpandFraming= to_what;
}

	

void KX_BlenderSceneConverter::RegisterGameObject(
									KX_GameObject *gameobject, 
									struct Object *for_blenderobject) 
{
	/* only maintained while converting, freed during game runtime */
	m_map_blender_to_gameobject.insert(CHashedPtr(for_blenderobject),gameobject);
}

/* only need to run this during conversion since
 * m_map_blender_to_gameobject is freed after conversion */
void KX_BlenderSceneConverter::UnregisterGameObject(
									KX_GameObject *gameobject) 
{
	struct Object *bobp= gameobject->GetBlenderObject();
	if (bobp) {
		CHashedPtr bptr(bobp);
		KX_GameObject **gobp= m_map_blender_to_gameobject[bptr];
		if (gobp && *gobp == gameobject)
		{
			// also maintain m_map_blender_to_gameobject if the gameobject
			// being removed is matching the blender object
			m_map_blender_to_gameobject.remove(bptr);
		}
	}
}

KX_GameObject *KX_BlenderSceneConverter::FindGameObject(
									struct Object *for_blenderobject) 
{
	KX_GameObject **obp= m_map_blender_to_gameobject[CHashedPtr(for_blenderobject)];
	
	return obp?*obp:NULL;
}

void KX_BlenderSceneConverter::RegisterGameMesh(
									RAS_MeshObject *gamemesh,
									struct Mesh *for_blendermesh)
{
	if (for_blendermesh) { /* dynamically loaded meshes we don't want to keep lookups for */
		m_map_mesh_to_gamemesh.insert(CHashedPtr(for_blendermesh),gamemesh);
	}
	m_meshobjects.push_back(pair<KX_Scene*,RAS_MeshObject*>(m_currentScene,gamemesh));
}



RAS_MeshObject *KX_BlenderSceneConverter::FindGameMesh(
									struct Mesh *for_blendermesh/*,
									unsigned int onlayer*/)
{
	RAS_MeshObject** meshp = m_map_mesh_to_gamemesh[CHashedPtr(for_blendermesh)];
	
	if (meshp/* && onlayer==(*meshp)->GetLightLayer()*/) {
		return *meshp;
	} else {
		return NULL;
	}
}

	


	

void KX_BlenderSceneConverter::RegisterPolyMaterial(RAS_IPolyMaterial *polymat)
{
	m_polymaterials.push_back(pair<KX_Scene*,RAS_IPolyMaterial*>(m_currentScene,polymat));
}



void KX_BlenderSceneConverter::RegisterInterpolatorList(
									BL_InterpolatorList *actList,
									struct bAction *for_act)
{
	m_map_blender_to_gameAdtList.insert(CHashedPtr(for_act), actList);
}



BL_InterpolatorList *KX_BlenderSceneConverter::FindInterpolatorList(
									struct bAction *for_act)
{
	BL_InterpolatorList **listp = m_map_blender_to_gameAdtList[CHashedPtr(for_act)];
		
	return listp?*listp:NULL;
}



void KX_BlenderSceneConverter::RegisterGameActuator(
									SCA_IActuator *act,
									struct bActuator *for_actuator)
{
	m_map_blender_to_gameactuator.insert(CHashedPtr(for_actuator), act);
}



SCA_IActuator *KX_BlenderSceneConverter::FindGameActuator(
									struct bActuator *for_actuator)
{
	SCA_IActuator **actp = m_map_blender_to_gameactuator[CHashedPtr(for_actuator)];
	
	return actp?*actp:NULL;
}



void KX_BlenderSceneConverter::RegisterGameController(
									SCA_IController *cont,
									struct bController *for_controller)
{
	m_map_blender_to_gamecontroller.insert(CHashedPtr(for_controller), cont);
}



SCA_IController *KX_BlenderSceneConverter::FindGameController(
									struct bController *for_controller)
{
	SCA_IController **contp = m_map_blender_to_gamecontroller[CHashedPtr(for_controller)];
	
	return contp?*contp:NULL;
}



void KX_BlenderSceneConverter::RegisterWorldInfo(
									KX_WorldInfo *worldinfo)
{
	m_worldinfos.push_back(pair<KX_Scene*,KX_WorldInfo*>(m_currentScene,worldinfo));
}

void	KX_BlenderSceneConverter::ResetPhysicsObjectsAnimationIpo(bool clearIpo)
{

	KX_SceneList* scenes = m_ketsjiEngine->CurrentScenes();
	int numScenes = scenes->size();
	int i;
	for (i=0;i<numScenes;i++)
	{
		KX_Scene* scene = scenes->at(i);
		//PHY_IPhysicsEnvironment* physEnv = scene->GetPhysicsEnvironment();
		CListValue* parentList = scene->GetRootParentList();
		int numObjects = parentList->GetCount();
		int g;
		for (g=0;g<numObjects;g++)
		{
			KX_GameObject* gameObj = (KX_GameObject*)parentList->GetValue(g);
			if (gameObj->IsDynamic())
			{
				//KX_IPhysicsController* physCtrl = gameObj->GetPhysicsController();
				
				Object* blenderObject = gameObj->GetBlenderObject();
				if (blenderObject)
				{
#if 0
					//erase existing ipo's
					Ipo* ipo = blenderObject->ipo;//findIpoForName(blenderObject->id.name+2);
					if (ipo)
					{ 	//clear the curve data
						if (clearIpo) {//rcruiz
							IpoCurve *icu1;
														
							int numCurves = 0;
							for ( icu1 = (IpoCurve*)ipo->curve.first; icu1;  ) {
							
								IpoCurve* tmpicu = icu1;
								
								/*int i;
								BezTriple *bezt;
								for ( bezt = tmpicu->bezt, i = 0;	i < tmpicu->totvert; i++, bezt++) {
									printf("(%f,%f,%f),(%f,%f,%f),(%f,%f,%f)\n",bezt->vec[0][0],bezt->vec[0][1],bezt->vec[0][2],bezt->vec[1][0],bezt->vec[1][1],bezt->vec[1][2],bezt->vec[2][0],bezt->vec[2][1],bezt->vec[2][2]);
								}*/
								
								icu1 = icu1->next;
								numCurves++;
			
								BLI_remlink( &( blenderObject->ipo->curve ), tmpicu );
								if ( tmpicu->bezt )
									MEM_freeN( tmpicu->bezt );
								MEM_freeN( tmpicu );
								localDel_ipoCurve( tmpicu );
							}
						}
					} else
					{	ipo = NULL; // XXX add_ipo(blenderObject->id.name+2, ID_OB);
						blenderObject->ipo = ipo;

					}
#endif
				}
			}

		}
		
	
	}



}

void	KX_BlenderSceneConverter::resetNoneDynamicObjectToIpo()
{
	if (addInitFromFrame) {		
		KX_SceneList* scenes = m_ketsjiEngine->CurrentScenes();
		int numScenes = scenes->size();
		if (numScenes>=0) {
			KX_Scene* scene = scenes->at(0);
			CListValue* parentList = scene->GetRootParentList();
			for (int ix=0;ix<parentList->GetCount();ix++) {
				KX_GameObject* gameobj = (KX_GameObject*)parentList->GetValue(ix);
				if (!gameobj->IsDynamic()) {
					Object* blenderobject = gameobj->GetBlenderObject();
					if (!blenderobject)
						continue;
					if (blenderobject->type==OB_ARMATURE)
						continue;
					float eu[3];
					mat4_to_eul(eu,blenderobject->obmat);					
					MT_Point3 pos = MT_Point3(
						blenderobject->obmat[3][0],
						blenderobject->obmat[3][1],
						blenderobject->obmat[3][2]
					);
					MT_Vector3 eulxyz = MT_Vector3(
						eu[0],
						eu[1],
						eu[2]
					);
					MT_Vector3 scale = MT_Vector3(
						blenderobject->size[0],
						blenderobject->size[1],
						blenderobject->size[2]
					);
					gameobj->NodeSetLocalPosition(pos);
					gameobj->NodeSetLocalOrientation(MT_Matrix3x3(eulxyz));
					gameobj->NodeSetLocalScale(scale);
					gameobj->NodeUpdateGS(0);
				}
			}
		}
	}
}


	///this generates ipo curves for position, rotation, allowing to use game physics in animation
void	KX_BlenderSceneConverter::WritePhysicsObjectToAnimationIpo(int frameNumber)
{

	KX_SceneList* scenes = m_ketsjiEngine->CurrentScenes();
	int numScenes = scenes->size();
	int i;
	for (i=0;i<numScenes;i++)
	{
		KX_Scene* scene = scenes->at(i);
		//PHY_IPhysicsEnvironment* physEnv = scene->GetPhysicsEnvironment();
		CListValue* parentList = scene->GetObjectList();
		int numObjects = parentList->GetCount();
		int g;
		for (g=0;g<numObjects;g++)
		{
			KX_GameObject* gameObj = (KX_GameObject*)parentList->GetValue(g);
			Object* blenderObject = gameObj->GetBlenderObject();
			if (blenderObject && blenderObject->parent==NULL && gameObj->IsDynamic())
			{
				//KX_IPhysicsController* physCtrl = gameObj->GetPhysicsController();

				if (blenderObject->adt==NULL)
					BKE_id_add_animdata(&blenderObject->id);

				if (blenderObject->adt)
				{
					const MT_Point3& position = gameObj->NodeGetWorldPosition();
					//const MT_Vector3& scale = gameObj->NodeGetWorldScaling();
					const MT_Matrix3x3& orn = gameObj->NodeGetWorldOrientation();

					position.getValue(blenderObject->loc);

					float tmat[3][3];
					for (int r=0;r<3;r++)
						for (int c=0;c<3;c++)
							tmat[r][c] = (float)orn[c][r];

					mat3_to_compatible_eul(blenderObject->rot, blenderObject->rot, tmat);

					insert_keyframe(NULL, &blenderObject->id, NULL, NULL, "location", -1, (float)frameNumber, INSERTKEY_FAST);
					insert_keyframe(NULL, &blenderObject->id, NULL, NULL, "rotation_euler", -1, (float)frameNumber, INSERTKEY_FAST);

#if 0
					const MT_Point3& position = gameObj->NodeGetWorldPosition();
					//const MT_Vector3& scale = gameObj->NodeGetWorldScaling();
					const MT_Matrix3x3& orn = gameObj->NodeGetWorldOrientation();
					
					float eulerAngles[3];	
					float eulerAnglesOld[3] = {0.0f, 0.0f, 0.0f};						
					float tmat[3][3];
					
					// XXX animato
					Ipo* ipo = blenderObject->ipo;

					//create the curves, if not existing, set linear if new

					IpoCurve *icu_lx = findIpoCurve((IpoCurve *)ipo->curve.first,"LocX");
					if (!icu_lx) {
						icu_lx = verify_ipocurve(&blenderObject->id, ipo->blocktype, NULL, NULL, NULL, OB_LOC_X, 1);
						if (icu_lx) icu_lx->ipo = IPO_LIN;
					}
					IpoCurve *icu_ly = findIpoCurve((IpoCurve *)ipo->curve.first,"LocY");
					if (!icu_ly) {
						icu_ly = verify_ipocurve(&blenderObject->id, ipo->blocktype, NULL, NULL, NULL, OB_LOC_Y, 1);
						if (icu_ly) icu_ly->ipo = IPO_LIN;
					}
					IpoCurve *icu_lz = findIpoCurve((IpoCurve *)ipo->curve.first,"LocZ");
					if (!icu_lz) {
						icu_lz = verify_ipocurve(&blenderObject->id, ipo->blocktype, NULL, NULL, NULL, OB_LOC_Z, 1);
						if (icu_lz) icu_lz->ipo = IPO_LIN;
					}
					IpoCurve *icu_rx = findIpoCurve((IpoCurve *)ipo->curve.first,"RotX");
					if (!icu_rx) {
						icu_rx = verify_ipocurve(&blenderObject->id, ipo->blocktype, NULL, NULL, NULL, OB_ROT_X, 1);
						if (icu_rx) icu_rx->ipo = IPO_LIN;
					}
					IpoCurve *icu_ry = findIpoCurve((IpoCurve *)ipo->curve.first,"RotY");
					if (!icu_ry) {
						icu_ry = verify_ipocurve(&blenderObject->id, ipo->blocktype, NULL, NULL, NULL, OB_ROT_Y, 1);
						if (icu_ry) icu_ry->ipo = IPO_LIN;
					}
					IpoCurve *icu_rz = findIpoCurve((IpoCurve *)ipo->curve.first,"RotZ");
					if (!icu_rz) {
						icu_rz = verify_ipocurve(&blenderObject->id, ipo->blocktype, NULL, NULL, NULL, OB_ROT_Z, 1);
						if (icu_rz) icu_rz->ipo = IPO_LIN;
					}
					
					if (icu_rx) eulerAnglesOld[0]= eval_icu( icu_rx, frameNumber - 1 ) / ((180 / 3.14159265f) / 10);
					if (icu_ry) eulerAnglesOld[1]= eval_icu( icu_ry, frameNumber - 1 ) / ((180 / 3.14159265f) / 10);
					if (icu_rz) eulerAnglesOld[2]= eval_icu( icu_rz, frameNumber - 1 ) / ((180 / 3.14159265f) / 10);
					
					// orn.getValue((float *)tmat); // uses the wrong ordering, cant use this
					for (int r=0;r<3;r++)
						for (int c=0;c<3;c++)
							tmat[r][c] = orn[c][r];
					
					// mat3_to_eul( eulerAngles,tmat); // better to use Mat3ToCompatibleEul
					mat3_to_compatible_eul( eulerAngles, eulerAnglesOld,tmat);
					
					//eval_icu
					for (int x = 0; x < 3; x++)
						eulerAngles[x] *= (float) ((180 / 3.14159265f) / 10.0);
					
					//fill the curves with data
					if (icu_lx) insert_vert_icu(icu_lx, frameNumber, position.x(), 1);
					if (icu_ly) insert_vert_icu(icu_ly, frameNumber, position.y(), 1);
					if (icu_lz) insert_vert_icu(icu_lz, frameNumber, position.z(), 1);
					if (icu_rx) insert_vert_icu(icu_rx, frameNumber, eulerAngles[0], 1);
					if (icu_ry) insert_vert_icu(icu_ry, frameNumber, eulerAngles[1], 1);
					if (icu_rz) insert_vert_icu(icu_rz, frameNumber, eulerAngles[2], 1);
					
					// Handles are corrected at the end, testhandles_ipocurve isn't needed yet
#endif
				}
			}
		}
	}
}


void	KX_BlenderSceneConverter::TestHandlesPhysicsObjectToAnimationIpo()
{

	KX_SceneList* scenes = m_ketsjiEngine->CurrentScenes();
	int numScenes = scenes->size();
	int i;
	for (i=0;i<numScenes;i++)
	{
		KX_Scene* scene = scenes->at(i);
		//PHY_IPhysicsEnvironment* physEnv = scene->GetPhysicsEnvironment();
		CListValue* parentList = scene->GetRootParentList();
		int numObjects = parentList->GetCount();
		int g;
		for (g=0;g<numObjects;g++)
		{
			KX_GameObject* gameObj = (KX_GameObject*)parentList->GetValue(g);
			if (gameObj->IsDynamic())
			{
				//KX_IPhysicsController* physCtrl = gameObj->GetPhysicsController();
				
#if 0
				Object* blenderObject = gameObj->GetBlenderObject();
				if (blenderObject && blenderObject->ipo)
				{
					// XXX animato
					Ipo* ipo = blenderObject->ipo;
					
					//create the curves, if not existing
					//testhandles_ipocurve checks for NULL
					testhandles_ipocurve(findIpoCurve((IpoCurve *)ipo->curve.first,"LocX"));
					testhandles_ipocurve(findIpoCurve((IpoCurve *)ipo->curve.first,"LocY"));
					testhandles_ipocurve(findIpoCurve((IpoCurve *)ipo->curve.first,"LocZ"));
					testhandles_ipocurve(findIpoCurve((IpoCurve *)ipo->curve.first,"RotX"));
					testhandles_ipocurve(findIpoCurve((IpoCurve *)ipo->curve.first,"RotY"));
					testhandles_ipocurve(findIpoCurve((IpoCurve *)ipo->curve.first,"RotZ"));
				}
#endif
			}
		}
	}
}

#ifdef WITH_PYTHON
PyObject *KX_BlenderSceneConverter::GetPyNamespace()
{
	return m_ketsjiEngine->GetPyNamespace();
}
#endif

vector<Main*> &KX_BlenderSceneConverter::GetMainDynamic()
{
	return m_DynamicMaggie;
}

Main* KX_BlenderSceneConverter::GetMainDynamicPath(const char *path)
{
	for (vector<Main*>::iterator it=m_DynamicMaggie.begin(); !(it==m_DynamicMaggie.end()); it++)
		if (BLI_path_cmp((*it)->name, path) == 0)
			return *it;
	
	return NULL;
}

bool KX_BlenderSceneConverter::LinkBlendFileMemory(void *data, int length, const char *path, char *group, KX_Scene *scene_merge, char **err_str, short options)
{
	BlendHandle *bpy_openlib = BLO_blendhandle_from_memory(data, length);

	// Error checking is done in LinkBlendFile
	return LinkBlendFile(bpy_openlib, path, group, scene_merge, err_str, options);
}

bool KX_BlenderSceneConverter::LinkBlendFilePath(const char *path, char *group, KX_Scene *scene_merge, char **err_str, short options)
{
	BlendHandle *bpy_openlib = BLO_blendhandle_from_file((char *)path, NULL);

	// Error checking is done in LinkBlendFile
	return LinkBlendFile(bpy_openlib, path, group, scene_merge, err_str, options);
}

bool KX_BlenderSceneConverter::LinkBlendFile(BlendHandle *bpy_openlib, const char *path, char *group, KX_Scene *scene_merge, char **err_str, short options)
{
	Main *main_newlib; /* stored as a dynamic 'main' until we free it */
	Main *main_tmp= NULL; /* created only for linking, then freed */
	LinkNode *names = NULL;
	int idcode= BKE_idcode_from_name(group);
	short flag= 0; /* don't need any special options */
	ReportList reports;
	static char err_local[255];
	
	/* only scene and mesh supported right now */
	if (idcode!=ID_SCE && idcode!=ID_ME &&idcode!=ID_AC) {
		snprintf(err_local, sizeof(err_local), "invalid ID type given \"%s\"\n", group);
		*err_str= err_local;
		BLO_blendhandle_close(bpy_openlib);
		return false;
	}
	
	if (GetMainDynamicPath(path)) {
		snprintf(err_local, sizeof(err_local), "blend file already open \"%s\"\n", path);
		*err_str= err_local;
		BLO_blendhandle_close(bpy_openlib);
		return false;
	}

	if (bpy_openlib==NULL) {
		snprintf(err_local, sizeof(err_local), "could not open blendfile \"%s\"\n", path);
		*err_str= err_local;
		return false;
	}
	
	main_newlib= (Main *)MEM_callocN( sizeof(Main), "BgeMain");
	BKE_reports_init(&reports, RPT_STORE);	

	/* here appending/linking starts */
	main_tmp = BLO_library_append_begin(main_newlib, &bpy_openlib, (char *)path);

	int totnames_dummy;
	names = BLO_blendhandle_get_datablock_names( bpy_openlib, idcode, &totnames_dummy);
	
	int i=0;
	LinkNode *n= names;
	while(n) {
		BLO_library_append_named_part(main_tmp, &bpy_openlib, (char *)n->link, idcode);
		n= (LinkNode *)n->next;
		i++;
	}
	BLI_linklist_free(names, free);	/* free linklist *and* each node's data */
	
	BLO_library_append_end(NULL, main_tmp, &bpy_openlib, idcode, flag);

	/* now do another round of linking for Scenes so all actions are properly loaded */
	if (idcode==ID_SCE && options & LIB_LOAD_LOAD_ACTIONS) {
		main_tmp = BLO_library_append_begin(main_newlib, &bpy_openlib, (char *)path);

		int totnames_dummy;
		names = BLO_blendhandle_get_datablock_names( bpy_openlib, ID_AC, &totnames_dummy);
	
		int i=0;
		LinkNode *n= names;
		while(n) {
			BLO_library_append_named_part(main_tmp, &bpy_openlib, (char *)n->link, ID_AC);
			n= (LinkNode *)n->next;
			i++;
		}
		BLI_linklist_free(names, free);	/* free linklist *and* each node's data */
	
		BLO_library_append_end(NULL, main_tmp, &bpy_openlib, ID_AC, flag);
	}
	
	BLO_blendhandle_close(bpy_openlib);

	BKE_reports_clear(&reports);
	/* done linking */	
	
	/* needed for lookups*/
	GetMainDynamic().push_back(main_newlib);
	strncpy(main_newlib->name, path, sizeof(main_newlib->name));	
	
	
	if (idcode==ID_ME) {
		/* Convert all new meshes into BGE meshes */
		ID* mesh;
	
		for (mesh= (ID *)main_newlib->mesh.first; mesh; mesh= (ID *)mesh->next ) {
			if (options & LIB_LOAD_VERBOSE)
				printf("MeshName: %s\n", mesh->name+2);
			RAS_MeshObject *meshobj = BL_ConvertMesh((Mesh *)mesh, NULL, scene_merge, this);
			scene_merge->GetLogicManager()->RegisterMeshName(meshobj->GetName(),meshobj);
		}
	}
	else if (idcode==ID_AC) {
		/* Convert all actions */
		ID *action;

		for (action= (ID *)main_newlib->action.first; action; action= (ID *)action->next) {
			if (options & LIB_LOAD_VERBOSE)
				printf("ActionName: %s\n", action->name+2);
			scene_merge->GetLogicManager()->RegisterActionName(action->name+2, action);
		}
	}
	else if (idcode==ID_SCE) {		
		/* Merge all new linked in scene into the existing one */
		ID *scene;
		for (scene= (ID *)main_newlib->scene.first; scene; scene= (ID *)scene->next ) {
			if (options & LIB_LOAD_VERBOSE)
				printf("SceneName: %s\n", scene->name+2);
			
			/* merge into the base  scene */
			KX_Scene* other= m_ketsjiEngine->CreateScene((Scene *)scene);
			scene_merge->MergeScene(other);
			
			// RemoveScene(other); // Don't run this, it frees the entire scene converter data, just delete the scene
			delete other;
		}

		/* Now handle all the actions */
		if (options & LIB_LOAD_LOAD_ACTIONS) {
			ID *action;

			for (action= (ID *)main_newlib->action.first; action; action= (ID *)action->next) {
				if (options & LIB_LOAD_VERBOSE)
					printf("ActionName: %s\n", action->name+2);
				scene_merge->GetLogicManager()->RegisterActionName(action->name+2, action);
			}
		}
	}
	
	return true;
}

/* Note m_map_*** are all ok and don't need to be freed
 * most are temp and NewRemoveObject frees m_map_gameobject_to_blender */
bool KX_BlenderSceneConverter::FreeBlendFile(struct Main *maggie)
{
	int maggie_index= -1;
	int i=0;

	if (maggie==NULL)
		return false;
	
	/* tag all false except the one we remove */
	for (vector<Main*>::iterator it=m_DynamicMaggie.begin(); !(it==m_DynamicMaggie.end()); it++) {
		Main *main= *it;
		if (main != maggie) {
			tag_main(main, 0);
		}
		else {
			maggie_index= i;
		}
		i++;
	}

	/* should never happen but just to be safe */
	if (maggie_index == -1)
		return false;

	m_DynamicMaggie.erase(m_DynamicMaggie.begin() + maggie_index);
	tag_main(maggie, 1);


	/* free all tagged objects */
	KX_SceneList* scenes = m_ketsjiEngine->CurrentScenes();
	int numScenes = scenes->size();


	for (int scene_idx=0;scene_idx<numScenes;scene_idx++)
	{
		KX_Scene* scene = scenes->at(scene_idx);
		if (IS_TAGGED(scene->GetBlenderScene())) {
			RemoveScene(scene); // XXX - not tested yet
			scene_idx--;
			numScenes--;
		}
		else {
			
			/* in case the mesh might be refered to later */
			{
				CTR_Map<STR_HashedString,void*> &mapStringToMeshes = scene->GetLogicManager()->GetMeshMap();
				
				for (int i=0; i<mapStringToMeshes.size(); i++)
				{
					RAS_MeshObject *meshobj= (RAS_MeshObject *) *mapStringToMeshes.at(i);
					if (meshobj && IS_TAGGED(meshobj->GetMesh()))
					{	
						STR_HashedString mn = meshobj->GetName();
						mapStringToMeshes.remove(mn);
						m_map_mesh_to_gamemesh.remove(CHashedPtr(meshobj->GetMesh()));
						i--;
					}
				}
			}

			/* Now unregister actions */
			{
				CTR_Map<STR_HashedString,void*> &mapStringToActions = scene->GetLogicManager()->GetActionMap();

				for (int i=0; i<mapStringToActions.size(); i++)
				{
					ID *action= (ID*) *mapStringToActions.at(i);

					if (IS_TAGGED(action))
					{
						STR_HashedString an = action->name+2;
						mapStringToActions.remove(an);
						i--;
					}
				}
			}
			
			//scene->FreeTagged(); /* removed tagged objects and meshes*/
			CListValue *obj_lists[] = {scene->GetObjectList(), scene->GetInactiveList(), NULL};

			for (int ob_ls_idx=0; obj_lists[ob_ls_idx]; ob_ls_idx++)
			{
				CListValue *obs= obj_lists[ob_ls_idx];
				RAS_MeshObject* mesh;

				for (int ob_idx = 0; ob_idx < obs->GetCount(); ob_idx++)
				{
					KX_GameObject* gameobj = (KX_GameObject*)obs->GetValue(ob_idx);
					if (IS_TAGGED(gameobj->GetBlenderObject())) {

						int size_before = obs->GetCount();

						/* Eventually calls RemoveNodeDestructObject
						 * frees m_map_gameobject_to_blender from UnregisterGameObject */
						scene->RemoveObject(gameobj);

						if (size_before != obs->GetCount())
							ob_idx--;
						else {
							printf("ERROR COULD NOT REMOVE \"%s\"\n", gameobj->GetName().ReadPtr());
						}
					}
					else {
						/* free the mesh, we could be referecing a linked one! */
						int mesh_index= gameobj->GetMeshCount();
						while(mesh_index--) {
							mesh= gameobj->GetMesh(mesh_index);
							if (IS_TAGGED(mesh->GetMesh())) {
								gameobj->RemoveMeshes(); /* XXX - slack, should only remove meshes that are library items but mostly objects only have 1 mesh */
								break;
							}
						}

						/* make sure action actuators are not referencing tagged actions */
						for (unsigned int act_idx=0; act_idx<gameobj->GetActuators().size(); act_idx++)
						{
							if (gameobj->GetActuators()[act_idx]->IsType(SCA_IActuator::KX_ACT_ACTION))
							{
								BL_ActionActuator *act = (BL_ActionActuator*)gameobj->GetActuators()[act_idx];
								if (IS_TAGGED(act->GetAction()))
									act->SetAction(NULL);
							}
						}
					}
				}
			}
		}
	}


	int size;

	// delete the entities of this scene
	/* TODO - */
#if 0
	vector<pair<KX_Scene*,KX_WorldInfo*> >::iterator worldit;
	size = m_worldinfos.size();
	for (i=0, worldit=m_worldinfos.begin(); i<size; ) {
		if ((*worldit).second) {
			delete (*worldit).second;
			*worldit = m_worldinfos.back();
			m_worldinfos.pop_back();
			size--;
		} else {
			i++;
			worldit++;
		}
	}
#endif


	/* Worlds don't reference original blender data so we need to make a set from them */
	typedef std::set<KX_WorldInfo*> KX_WorldInfoSet;
	KX_WorldInfoSet worldset;
	for (int scene_idx=0;scene_idx<numScenes;scene_idx++)
	{
		KX_Scene* scene = scenes->at(scene_idx);
		if (scene->GetWorldInfo())
			worldset.insert( scene->GetWorldInfo() );
	}

	vector<pair<KX_Scene*,KX_WorldInfo*> >::iterator worldit;
	size = m_worldinfos.size();
	for (i=0, worldit=m_worldinfos.begin(); i<size; ) {
		if ((*worldit).second && (worldset.count((*worldit).second)) == 0) {
			delete (*worldit).second;
			*worldit = m_worldinfos.back();
			m_worldinfos.pop_back();
			size--;
		} else {
			i++;
			worldit++;
		}
	}
	worldset.clear();
	/* done freeing the worlds */




	vector<pair<KX_Scene*,RAS_IPolyMaterial*> >::iterator polymit;
	size = m_polymaterials.size();



	for (i=0, polymit=m_polymaterials.begin(); i<size; ) {
		RAS_IPolyMaterial *mat= (*polymit).second;
		Material *bmat= NULL;

		/* Why do we need to check for RAS_BLENDERMAT if both are cast to a (PyObject*)? - Campbell */
		if (mat->GetFlag() & RAS_BLENDERMAT) {
			KX_BlenderMaterial *bl_mat = static_cast<KX_BlenderMaterial*>(mat);
			bmat= bl_mat->GetBlenderMaterial();

		} else {
			KX_PolygonMaterial *kx_mat = static_cast<KX_PolygonMaterial*>(mat);
			bmat= kx_mat->GetBlenderMaterial();
		}

		if (IS_TAGGED(bmat)) {
			/* only remove from bucket */
			((*polymit).first)->GetBucketManager()->RemoveMaterial(mat);
		}

		i++;
		polymit++;
	}



	for (i=0, polymit=m_polymaterials.begin(); i<size; ) {
		RAS_IPolyMaterial *mat= (*polymit).second;
		Material *bmat= NULL;

		/* Why do we need to check for RAS_BLENDERMAT if both are cast to a (PyObject*)? - Campbell */
		if (mat->GetFlag() & RAS_BLENDERMAT) {
			KX_BlenderMaterial *bl_mat = static_cast<KX_BlenderMaterial*>(mat);
			bmat= bl_mat->GetBlenderMaterial();

		} else {
			KX_PolygonMaterial *kx_mat = static_cast<KX_PolygonMaterial*>(mat);
			bmat= kx_mat->GetBlenderMaterial();
		}

		if (bmat) {
			//printf("FOUND MAT '%s' !!! ", ((ID*)bmat)->name+2);
		}
		else {
			//printf("LOST MAT  !!!");
		}

		if (IS_TAGGED(bmat)) {

			delete (*polymit).second;
			*polymit = m_polymaterials.back();
			m_polymaterials.pop_back();
			size--;
			//printf("tagged !\n");
		} else {
			i++;
			polymit++;
			//printf("(un)tagged !\n");
		}
	}

	vector<pair<KX_Scene*,BL_Material*> >::iterator matit;
	size = m_materials.size();
	for (i=0, matit=m_materials.begin(); i<size; ) {
		BL_Material *mat= (*matit).second;
		if (IS_TAGGED(mat->material)) {
			delete (*matit).second;
			*matit = m_materials.back();
			m_materials.pop_back();
			size--;
		} else {
			i++;
			matit++;
		}
	}

	vector<pair<KX_Scene*,RAS_MeshObject*> >::iterator meshit;
	size = m_meshobjects.size();
	for (i=0, meshit=m_meshobjects.begin(); i<size; ) {
		RAS_MeshObject *me= (*meshit).second;
		if (IS_TAGGED(me->GetMesh())) {
			delete (*meshit).second;
			*meshit = m_meshobjects.back();
			m_meshobjects.pop_back();
			size--;
		} else {
			i++;
			meshit++;
		}
	}

	free_main(maggie);

	return true;
}

bool KX_BlenderSceneConverter::FreeBlendFile(const char *path)
{
	return FreeBlendFile(GetMainDynamicPath(path));
}

bool KX_BlenderSceneConverter::MergeScene(KX_Scene *to, KX_Scene *from)
{

	{
		vector<pair<KX_Scene*,KX_WorldInfo*> >::iterator itp = m_worldinfos.begin();
		while (itp != m_worldinfos.end()) {
			if ((*itp).first==from)
				(*itp).first= to;
			itp++;
		}
	}

	{
		vector<pair<KX_Scene*,RAS_IPolyMaterial*> >::iterator itp = m_polymaterials.begin();
		while (itp != m_polymaterials.end()) {
			if ((*itp).first==from) {
				(*itp).first= to;

				/* also switch internal data */
				RAS_IPolyMaterial*mat= (*itp).second;
				mat->Replace_IScene(to);
			}
			itp++;
		}
	}

	{
		vector<pair<KX_Scene*,RAS_MeshObject*> >::iterator itp = m_meshobjects.begin();
		while (itp != m_meshobjects.end()) {
			if ((*itp).first==from)
				(*itp).first= to;
			itp++;
		}
	}

	{
		vector<pair<KX_Scene*,BL_Material*> >::iterator itp = m_materials.begin();
		while (itp != m_materials.end()) {
			if ((*itp).first==from)
				(*itp).first= to;
			itp++;
		}
	}
	
	return true;
}

/* This function merges a mesh from the current scene into another main
 * it does not convert */
RAS_MeshObject *KX_BlenderSceneConverter::ConvertMeshSpecial(KX_Scene* kx_scene, Main *maggie, const char *name)
{
	/* Find a mesh in the current main */
	ID *me= static_cast<ID *>(BLI_findstring(&m_maggie->mesh, name, offsetof(ID, name) + 2));
	
	if (me==NULL) {
		printf("Could not be found \"%s\"\n", name);
		return NULL;
	}
	
	/* Watch this!, if its used in the original scene can cause big troubles */
	if (me->us > 0) {
		printf("Mesh has a user \"%s\"\n", name);
		me = (ID*)BKE_mesh_copy((Mesh*)me);
		me->us--;
	}
	BLI_remlink(&m_maggie->mesh, me); /* even if we made the copy it needs to be removed */
	BLI_addtail(&maggie->mesh, me);

	
	/* Must copy the materials this uses else we cant free them */
	{
		Mesh *mesh= (Mesh *)me;
		
		/* ensure all materials are tagged */
		for (int i=0; i<mesh->totcol; i++)
			if (mesh->mat[i])
				mesh->mat[i]->id.flag &= ~LIB_DOIT;
		
		for (int i=0; i<mesh->totcol; i++)
		{
			Material *mat_old= mesh->mat[i];
			
			/* if its tagged its a replaced material */
			if (mat_old && (mat_old->id.flag & LIB_DOIT)==0)
			{
				Material *mat_old= mesh->mat[i];
				Material *mat_new= BKE_material_copy( mat_old );
				
				mat_new->id.flag |= LIB_DOIT;
				mat_old->id.us--;
				
				BLI_remlink(&m_maggie->mat, mat_new);
				BLI_addtail(&maggie->mat, mat_new);
				
				mesh->mat[i]= mat_new;
				
				/* the same material may be used twice */
				for (int j=i+1; j<mesh->totcol; j++)
				{
					if (mesh->mat[j]==mat_old)
					{
						mesh->mat[j]= mat_new;
						mat_new->id.us++;
						mat_old->id.us--;
					}
				}
			}
		}
	}
	
	RAS_MeshObject *meshobj = BL_ConvertMesh((Mesh *)me, NULL, kx_scene, this);
	kx_scene->GetLogicManager()->RegisterMeshName(meshobj->GetName(),meshobj);
	m_map_mesh_to_gamemesh.clear(); /* This is at runtime so no need to keep this, BL_ConvertMesh adds */
	return meshobj;
}