BME_conversions.c

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/*
 * BME_mesh.c    jan 2007
 *
 *  BMesh mesh level functions.
 *
 *
 * ***** 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.
 * about this.  
 *
 * 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) 2007 Blender Foundation.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): Geoffrey Bantle, Levi Schooley.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include "MEM_guardedalloc.h"

#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"

#include "BLI_edgehash.h"
#include "BLI_listbase.h"
#include "BLI_utildefines.h"

#include "BKE_mesh.h"
#include "BKE_cdderivedmesh.h"

//XXX #include "BIF_editmesh.h"
//XXX #include "editmesh.h"
#include "bmesh_private.h"

//XXX #include "BSE_edit.h"

/* XXX IMPORTANT: editmesh stuff doesn't belong in kernel! (ton) */

/*merge these functions*/
static void BME_DMcorners_to_loops(BME_Mesh *bm, CustomData *facedata, int index, BME_Poly *f, int numCol, int numTex){
    int i, j;
    BME_Loop *l;
    MTFace *texface;
    MTexPoly *texpoly;
    MCol *mcol;
    MLoopCol *mloopcol;
    MLoopUV *mloopuv;

    for(i=0; i< numTex; i++){
        texface = CustomData_get_layer_n(facedata, CD_MTFACE, i);
        texpoly = CustomData_bmesh_get_n(&bm->pdata, f->data, CD_MTEXPOLY, i);

        texpoly->tpage = texface[index].tpage;
        texpoly->flag = texface[index].flag;
        texpoly->transp = texface[index].transp;
        texpoly->mode = texface[index].mode;
        texpoly->tile = texface[index].tile;
        texpoly->unwrap = texface[index].unwrap;

        j = 0;
        l = f->loopbase;
        do{
            mloopuv = CustomData_bmesh_get_n(&bm->ldata, l->data, CD_MLOOPUV, i);
            mloopuv->uv[0] = texface[index].uv[j][0];
            mloopuv->uv[1] = texface[index].uv[j][1];
            j++;
            l = l->next;
        }while(l!=f->loopbase);
    }

    for(i=0; i < numCol; i++){
        mcol = CustomData_get_layer_n(facedata, CD_MCOL, i);
        j = 0;
        l = f->loopbase;
        do{
            mloopcol = CustomData_bmesh_get_n(&bm->ldata, l->data, CD_MLOOPCOL, i);
            mloopcol->r = mcol[(index*4)+j].r;
            mloopcol->g = mcol[(index*4)+j].g;
            mloopcol->b = mcol[(index*4)+j].b;
            mloopcol->a = mcol[(index*4)+j].a;
            j++;
            l = l->next;
        }while(l!=f->loopbase);
    }
}

static void BME_DMloops_to_corners(BME_Mesh *bm, CustomData *facedata, int index, BME_Poly *f,int numCol, int numTex){
    int i, j;
    BME_Loop *l;
    MTFace *texface;
    MTexPoly *texpoly;
    MCol *mcol;
    MLoopCol *mloopcol;
    MLoopUV *mloopuv;

    for(i=0; i < numTex; i++){
        texface = CustomData_get_layer_n(facedata, CD_MTFACE, i);
        texpoly = CustomData_bmesh_get_n(&bm->pdata, f->data, CD_MTEXPOLY, i);
        
        texface[index].tpage = texpoly->tpage;
        texface[index].flag = texpoly->flag;
        texface[index].transp = texpoly->transp;
        texface[index].mode = texpoly->mode;
        texface[index].tile = texpoly->tile;
        texface[index].unwrap = texpoly->unwrap;

        j = 0;
        l = f->loopbase;
        do{
            mloopuv = CustomData_bmesh_get_n(&bm->ldata, l->data, CD_MLOOPUV, i);
            texface[index].uv[j][0] = mloopuv->uv[0];
            texface[index].uv[j][1] = mloopuv->uv[1];
            j++;
            l = l->next;
        }while(l!=f->loopbase);

    }
    for(i=0; i < numCol; i++){
        mcol = CustomData_get_layer_n(facedata,CD_MCOL, i);
        j = 0;
        l = f->loopbase;
        do{
            mloopcol = CustomData_bmesh_get_n(&bm->ldata, l->data, CD_MLOOPCOL, i);
            mcol[(index*4) + j].r = mloopcol->r;
            mcol[(index*4) + j].g = mloopcol->g;
            mcol[(index*4) + j].b = mloopcol->b;
            mcol[(index*4) + j].a = mloopcol->a;
            j++;
            l = l->next;
        }while(l!=f->loopbase);
    }
}


static void BME_corners_to_loops(BME_Mesh *bm, CustomData *facedata, void *face_block, BME_Poly *f,int numCol, int numTex){
    int i, j;
    BME_Loop *l;
    MTFace *texface;
    MTexPoly *texpoly;
    MCol *mcol;
    MLoopCol *mloopcol;
    MLoopUV *mloopuv;

    for(i=0; i < numTex; i++){
        texface = CustomData_em_get_n(facedata, face_block, CD_MTFACE, i);
        texpoly = CustomData_bmesh_get_n(&bm->pdata, f->data, CD_MTEXPOLY, i);
        
        texpoly->tpage = texface->tpage;
        texpoly->flag = texface->flag;
        texpoly->transp = texface->transp;
        texpoly->mode = texface->mode;
        texpoly->tile = texface->tile;
        texpoly->unwrap = texface->unwrap;

        j = 0;
        l = f->loopbase;
        do{
            mloopuv = CustomData_bmesh_get_n(&bm->ldata, l->data, CD_MLOOPUV, i);
            mloopuv->uv[0] = texface->uv[j][0];
            mloopuv->uv[1] = texface->uv[j][1];
            j++;
            l = l->next;
        }while(l!=f->loopbase);

    }
    for(i=0; i < numCol; i++){
        mcol = CustomData_em_get_n(facedata, face_block, CD_MCOL, i);
        j = 0;
        l = f->loopbase;
        do{
            mloopcol = CustomData_bmesh_get_n(&bm->ldata, l->data, CD_MLOOPCOL, i);
            mloopcol->r = mcol[j].r;
            mloopcol->g = mcol[j].g;
            mloopcol->b = mcol[j].b;
            mloopcol->a = mcol[j].a;
            j++;
            l = l->next;
        }while(l!=f->loopbase);
    }
}

static void BME_loops_to_corners(BME_Mesh *bm, CustomData *facedata, void *face_block, BME_Poly *f,int numCol, int numTex){
    int i, j;
    BME_Loop *l;
    MTFace *texface;
    MTexPoly *texpoly;
    MCol *mcol;
    MLoopCol *mloopcol;
    MLoopUV *mloopuv;

    for(i=0; i < numTex; i++){
        texface = CustomData_em_get_n(facedata, face_block, CD_MTFACE, i);
        texpoly = CustomData_bmesh_get_n(&bm->pdata, f->data, CD_MTEXPOLY, i);
        
        texface->tpage = texpoly->tpage;
        texface->flag = texpoly->flag;
        texface->transp = texpoly->transp;
        texface->mode = texpoly->mode;
        texface->tile = texpoly->tile;
        texface->unwrap = texpoly->unwrap;

        j = 0;
        l = f->loopbase;
        do{
            mloopuv = CustomData_bmesh_get_n(&bm->ldata, l->data, CD_MLOOPUV, i);
            texface->uv[j][0] = mloopuv->uv[0];
            texface->uv[j][1] = mloopuv->uv[1];
            j++;
            l = l->next;
        }while(l!=f->loopbase);

    }
    for(i=0; i < numCol; i++){
        mcol = CustomData_em_get_n(facedata, face_block, CD_MCOL, i);
        j = 0;
        l = f->loopbase;
        do{
            mloopcol = CustomData_bmesh_get_n(&bm->ldata, l->data, CD_MLOOPCOL, i);
            mcol[j].r = mloopcol->r;
            mcol[j].g = mloopcol->g;
            mcol[j].b = mloopcol->b;
            mcol[j].a = mloopcol->a;
            j++;
            l = l->next;
        }while(l!=f->loopbase);
    }
}
/*move the EditMesh conversion functions to editmesh_tools.c*/
BME_Mesh *BME_editmesh_to_bmesh(EditMesh *em) {
    BME_Mesh *bm;
    int allocsize[4] = {512,512,2048,512}, numTex, numCol;
    BME_Vert *v1, *v2;
    BME_Edge *e, *edar[4];
    BME_Poly *f;

    EditVert *eve;
    EditEdge *eed;
    EditFace *efa;

    int len;
    bm = BME_make_mesh(allocsize);

    /*copy custom data layout*/
    CustomData_copy(&em->vdata, &bm->vdata, CD_MASK_BMESH, CD_CALLOC, 0);
    CustomData_copy(&em->edata, &bm->edata, CD_MASK_BMESH, CD_CALLOC, 0);
    CustomData_copy(&em->fdata, &bm->pdata, CD_MASK_BMESH, CD_CALLOC, 0);

    /*copy face corner data*/
    CustomData_to_bmeshpoly(&em->fdata, &bm->pdata, &bm->ldata);
    /*initialize memory pools*/
    CustomData_bmesh_init_pool(&bm->vdata, allocsize[0]);
    CustomData_bmesh_init_pool(&bm->edata, allocsize[1]);
    CustomData_bmesh_init_pool(&bm->ldata, allocsize[2]);
    CustomData_bmesh_init_pool(&bm->pdata, allocsize[3]);
    /*needed later*/
    numTex = CustomData_number_of_layers(&bm->pdata, CD_MTEXPOLY);
    numCol = CustomData_number_of_layers(&bm->ldata, CD_MLOOPCOL);

    BME_model_begin(bm);
    /*add verts*/
    eve= em->verts.first;
    while(eve) {
        v1 = BME_MV(bm,eve->co);
        VECCOPY(v1->no,eve->no);
        v1->flag = eve->f;
        v1->h = eve->h;
        v1->bweight = eve->bweight;
        /*Copy Custom Data*/
        CustomData_bmesh_copy_data(&em->vdata, &bm->vdata, eve->data, &v1->data);
        eve->tmp.v = (EditVert*)v1;
        eve = eve->next;
    }
    
    /*add edges*/
    eed= em->edges.first;
    while(eed) {
        v1 = (BME_Vert*)eed->v1->tmp.v;
        v2 = (BME_Vert*)eed->v2->tmp.v;
        e = BME_ME(bm, v1, v2);
        e->crease = eed->crease;
        e->bweight = eed->bweight;
        e->flag = eed->f & SELECT;
        if(eed->sharp) e->flag |= ME_SHARP;
        if(eed->seam) e->flag |= ME_SEAM;
        //XXX if(eed->h & EM_FGON) e->flag |= ME_FGON;
        if(eed->h & 1) e->flag |= ME_HIDE;
        eed->tmp.e = (EditEdge*)e;
        CustomData_bmesh_copy_data(&em->edata, &bm->edata, eed->data, &e->data);
        eed = eed->next;
    }
    /*add faces.*/
    efa= em->faces.first;
    while(efa) {
        if(efa->v4) len = 4;
        else len = 3;
        
        edar[0] = (BME_Edge*)efa->e1->tmp.e;
        edar[1] = (BME_Edge*)efa->e2->tmp.e;
        edar[2] = (BME_Edge*)efa->e3->tmp.e;
        if(len == 4){
            edar[3] = (BME_Edge*)efa->e4->tmp.e;
        }
        
        /*find v1 and v2*/
        v1 = (BME_Vert*)efa->v1->tmp.v;
        v2 = (BME_Vert*)efa->v2->tmp.v;
        
        f = BME_MF(bm,v1,v2,edar,len);
        f->mat_nr = efa->mat_nr;
        f->flag = efa->flag;
        if(efa->h) {
            f->flag |= ME_HIDE;
            f->flag &= ~ME_FACE_SEL;
        }
        else {
            if(efa->f & 1) f->flag |= ME_FACE_SEL;
            else f->flag &= ~ME_FACE_SEL;
        }
        CustomData_bmesh_copy_data(&em->fdata, &bm->pdata, efa->data, &f->data);
        BME_corners_to_loops(bm, &em->fdata, efa->data, f,numCol,numTex);
        efa = efa->next;
    }
    BME_model_end(bm);
    return bm;
}
/* adds the geometry in the bmesh to editMesh (does not free editMesh)
 * if td != NULL, the transdata will be mapped to the EditVert's co */
void BME_bmesh_to_editmesh(BME_Mesh *bm, BME_TransData_Head *td, EditMesh *em) {
    BME_Vert *v1;
    BME_Edge *e;
    BME_Poly *f;
    
    BME_TransData *vtd;

    EditVert *eve1, /* *eve2, *eve3, *eve4, */ /* UNUSED */ **evlist;
    EditEdge *eed;
    EditFace *efa;

    int totvert, len, i, numTex, numCol;

    if (em == NULL) return;

    CustomData_copy(&bm->vdata, &em->vdata, CD_MASK_BMESH, CD_CALLOC, 0);
    CustomData_copy(&bm->edata, &em->edata, CD_MASK_BMESH, CD_CALLOC, 0);
    CustomData_copy(&bm->pdata, &em->fdata, CD_MASK_BMESH, CD_CALLOC, 0);
    CustomData_from_bmeshpoly(&em->fdata, &bm->pdata, &bm->ldata,0);
    numTex = CustomData_number_of_layers(&bm->pdata, CD_MTEXPOLY);
    numCol = CustomData_number_of_layers(&bm->ldata, CD_MLOOPCOL);


    /* convert to EditMesh */
    /* make editverts */
    totvert = BLI_countlist(&(bm->verts));
    evlist= (EditVert **)MEM_mallocN(totvert*sizeof(void *),"evlist");
    for (i=0,v1=bm->verts.first;v1;v1=v1->next,i++) {
        v1->tflag1 = i;
        eve1 = NULL; //XXX addvertlist(v1->co,NULL);
        if (td && (vtd = BME_get_transdata(td,v1))) {
            vtd->loc = eve1->co;
        }
        eve1->keyindex = i;
        evlist[i]= eve1;
        eve1->f = (unsigned char)v1->flag;
        eve1->h = (unsigned char)v1->h;
        eve1->bweight = v1->bweight;
        CustomData_em_copy_data(&bm->vdata, &em->vdata, v1->data, &eve1->data);
    }
    
    /* make edges */
    for (e=bm->edges.first;e;e=e->next) {
        if(0) { //XXX if(!(findedgelist(evlist[e->v1->tflag1], evlist[e->v2->tflag1]))){
            eed= NULL; //XXX addedgelist(evlist[e->v1->tflag1], evlist[e->v2->tflag1], NULL);
            eed->crease = e->crease;
            eed->bweight = e->bweight;
            if(e->flag & ME_SEAM) eed->seam = 1;
            if(e->flag & ME_SHARP) eed->sharp = 1;
            if(e->flag & SELECT) eed->f |= SELECT;
            //XXX if(e->flag & ME_FGON) eed->h= EM_FGON; // 2 different defines!
            if(e->flag & ME_HIDE) eed->h |= 1;
            if(em->selectmode==SCE_SELECT_EDGE) { 
                ; //XXX EM_select_edge(eed, eed->f & SELECT);
            }
            CustomData_em_copy_data(&bm->edata, &em->edata, e->data, &eed->data);
        }
    }

    /* make faces */
    for (f=bm->polys.first;f;f=f->next) {
        len = BME_cycle_length(f->loopbase);
        if (len==3 || len==4) {
            eve1= evlist[f->loopbase->v->tflag1];
            /* eve2= evlist[f->loopbase->next->v->tflag1]; */ /* UNUSED */
            /* eve3= evlist[f->loopbase->next->next->v->tflag1]; */ /* UNUSED */
            /* if (len == 4) {
                eve4= evlist[f->loopbase->prev->v->tflag1];
            }
            else {
                eve4= NULL;
            } */ /* UNUSED */

            efa = NULL; //XXX addfacelist(eve1, eve2, eve3, eve4, NULL, NULL);
            efa->mat_nr = (unsigned char)f->mat_nr;
            efa->flag= f->flag & ~ME_HIDE;
            if(f->flag & ME_FACE_SEL) {
                efa->f |= SELECT;
            }
            if(f->flag & ME_HIDE) efa->h= 1;
            // XXX flag depricated
            // if((G.f & G_FACESELECT) && (efa->f & SELECT))
                //XXX EM_select_face(efa, 1); /* flush down */
            CustomData_em_copy_data(&bm->pdata, &em->fdata, f->data, &efa->data);
            BME_loops_to_corners(bm, &em->fdata, efa->data, f,numCol,numTex);
        }
    }

    MEM_freeN(evlist);

}

/* Adds the geometry found in dm to bm
  */
BME_Mesh *BME_derivedmesh_to_bmesh(DerivedMesh *dm)
{
    
    BME_Mesh *bm;
    int allocsize[4] = {512,512,2048,512};
    MVert *mvert, *mv;
    MEdge *medge, *me;
    MFace *mface, *mf;
    int totface,totedge,totvert,i,len, numTex, numCol;
    BME_Vert *v1=NULL,*v2=NULL, **vert_array;
    BME_Edge *e=NULL;
    BME_Poly *f=NULL;
    
    EdgeHash *edge_hash = BLI_edgehash_new();

    bm = BME_make_mesh(allocsize);
    /*copy custom data layout*/
    CustomData_copy(&dm->vertData, &bm->vdata, CD_MASK_BMESH, CD_CALLOC, 0);
    CustomData_copy(&dm->edgeData, &bm->edata, CD_MASK_BMESH, CD_CALLOC, 0);
    CustomData_copy(&dm->faceData, &bm->pdata, CD_MASK_BMESH, CD_CALLOC, 0);

    /*copy face corner data*/
    CustomData_to_bmeshpoly(&dm->faceData, &bm->pdata, &bm->ldata);
    /*initialize memory pools*/
    CustomData_bmesh_init_pool(&bm->vdata, allocsize[0]);
    CustomData_bmesh_init_pool(&bm->edata, allocsize[1]);
    CustomData_bmesh_init_pool(&bm->ldata, allocsize[2]);
    CustomData_bmesh_init_pool(&bm->pdata, allocsize[3]);
    /*needed later*/
    numTex = CustomData_number_of_layers(&bm->pdata, CD_MTEXPOLY);
    numCol = CustomData_number_of_layers(&bm->ldata, CD_MLOOPCOL);

    totvert = dm->getNumVerts(dm);
    totedge = dm->getNumEdges(dm);
    totface = dm->getNumFaces(dm);
    mvert = dm->getVertArray(dm);
    medge = dm->getEdgeArray(dm);
    mface = dm->getFaceArray(dm);

    vert_array = MEM_mallocN(sizeof(*vert_array)*totvert,"BME_derivedmesh_to_bmesh BME_Vert* array");

    BME_model_begin(bm);
    /*add verts*/
    for(i=0,mv = mvert; i < totvert;i++,mv++){
        v1 = BME_MV(bm,mv->co);
        vert_array[i] = v1;
        v1->flag = mv->flag;
        v1->bweight = mv->bweight/255.0f;
        CustomData_to_bmesh_block(&dm->vertData, &bm->vdata, i, &v1->data);
    }
    /*add edges*/
    for(i=0,me = medge; i < totedge;i++,me++){
        v1 = vert_array[me->v1];
        v2 = vert_array[me->v2];
        e = BME_ME(bm, v1, v2);
        e->crease = me->crease/255.0f;
        e->bweight = me->bweight/255.0f;
        e->flag = (unsigned char)me->flag;
        BLI_edgehash_insert(edge_hash,me->v1,me->v2,e);
        CustomData_to_bmesh_block(&dm->edgeData, &bm->edata, i, &e->data);
    }
    /*add faces.*/
    for(i=0,mf = mface; i < totface;i++,mf++){
        BME_Edge *edar[4];
        if(mf->v4) len = 4;
        else len = 3;
        
        edar[0] = BLI_edgehash_lookup(edge_hash,mf->v1,mf->v2);
        edar[1] = BLI_edgehash_lookup(edge_hash,mf->v2,mf->v3);
        if(len == 4){
            edar[2] = BLI_edgehash_lookup(edge_hash,mf->v3,mf->v4);
            edar[3] = BLI_edgehash_lookup(edge_hash,mf->v4,mf->v1);
        }
        else
            edar[2] = BLI_edgehash_lookup(edge_hash,mf->v3,mf->v1);
        
        /*find v1 and v2*/
        v1 = vert_array[mf->v1];
        v2 = vert_array[mf->v2];
        
        f = BME_MF(bm,v1,v2,edar,len);
        f->mat_nr = mf->mat_nr;
        f->flag = mf->flag;
        CustomData_to_bmesh_block(&dm->faceData,&bm->pdata,i,&f->data);
        BME_DMcorners_to_loops(bm, &dm->faceData,i,f, numCol,numTex);
    }
    
    BME_model_end(bm);
    BLI_edgehash_free(edge_hash, NULL);
    MEM_freeN(vert_array);
    return bm;
}

DerivedMesh *BME_bmesh_to_derivedmesh(BME_Mesh *bm, DerivedMesh *dm)
{
    MFace *mface, *mf;
    MEdge *medge, *me;
    MVert *mvert, *mv;
    int *origindex;
    int totface, totedge, totvert, i, /* bmeshok, */ /* UNUSED */ len, numTex, numCol;

    BME_Vert *v1=NULL;
    BME_Edge *e=NULL, *oe=NULL;
    BME_Poly *f=NULL;
    
    DerivedMesh *result;
    EdgeHash *edge_hash = BLI_edgehash_new();

    totvert = BLI_countlist(&(bm->verts));
    totedge = 0;
    
    /*we cannot have double edges in a derived mesh!*/
    for(i=0, v1=bm->verts.first; v1; v1=v1->next, i++) v1->tflag1 = i;
    for(e=bm->edges.first; e; e=e->next){
        oe = BLI_edgehash_lookup(edge_hash,e->v1->tflag1, e->v2->tflag1);
        if(!oe){
            totedge++;
            BLI_edgehash_insert(edge_hash,e->v1->tflag1,e->v2->tflag1,e);
            e->tflag2 = 1;
        }
        else{
            e->tflag2 = 0;
        }
    }
    
    /*count quads and tris*/
    totface = 0;
    /* bmeshok = 1; */ /* UNUSED */
    for(f=bm->polys.first;f;f=f->next){
        len = BME_cycle_length(f->loopbase);
        if(len == 3 || len == 4) totface++;
    }
    
    /*convert back to mesh*/
    result = CDDM_from_template(dm,totvert,totedge,totface);
    CustomData_merge(&bm->vdata, &result->vertData, CD_MASK_BMESH, CD_CALLOC, totvert);
    CustomData_merge(&bm->edata, &result->edgeData, CD_MASK_BMESH, CD_CALLOC, totedge);
    CustomData_merge(&bm->pdata, &result->faceData, CD_MASK_BMESH, CD_CALLOC, totface);
    CustomData_from_bmeshpoly(&result->faceData, &bm->pdata, &bm->ldata,totface);
    numTex = CustomData_number_of_layers(&bm->pdata, CD_MTEXPOLY);
    numCol = CustomData_number_of_layers(&bm->ldata, CD_MLOOPCOL);


    /*Make Verts*/
    mvert = CDDM_get_verts(result);
    origindex = result->getVertDataArray(result, CD_ORIGINDEX);
    for(i=0,v1=bm->verts.first,mv=mvert;v1;v1=v1->next,i++,mv++){
        VECCOPY(mv->co,v1->co);
        mv->flag = (unsigned char)v1->flag;
        mv->bweight = (char)(255.0*v1->bweight);
        CustomData_from_bmesh_block(&bm->vdata, &result->vertData, &v1->data, i);
        origindex[i] = ORIGINDEX_NONE;
    }
    medge = CDDM_get_edges(result);
    origindex = result->getEdgeDataArray(result, CD_ORIGINDEX);
    i=0;
    for(e=bm->edges.first,me=medge;e;e=e->next){
        if(e->tflag2){
            if(e->v1->tflag1 < e->v2->tflag1){
                me->v1 = e->v1->tflag1;
                me->v2 = e->v2->tflag1;
            }
            else{
                me->v1 = e->v2->tflag1;
                me->v2 = e->v1->tflag1;
            }
        
            me->crease = (char)(255.0*e->crease);
            me->bweight = (char)(255.0*e->bweight);
            me->flag = e->flag;
            CustomData_from_bmesh_block(&bm->edata, &result->edgeData, &e->data, i);
            origindex[i] = ORIGINDEX_NONE;
            me++;
            i++;
        }
    }
    if(totface){
        mface = CDDM_get_faces(result);
        origindex = result->getFaceDataArray(result, CD_ORIGINDEX);
        /*make faces*/
        for(i=0,f=bm->polys.first;f;f=f->next){
            mf = &mface[i];
            len = BME_cycle_length(f->loopbase);
            if(len==3 || len==4){
                mf->v1 = f->loopbase->v->tflag1;
                mf->v2 = f->loopbase->next->v->tflag1;
                mf->v3 = f->loopbase->next->next->v->tflag1;
                if(len == 4){
                    mf->v4 = f->loopbase->prev->v->tflag1;
                }
                /* test and rotate indexes if necessary so that verts 3 and 4 aren't index 0 */
                if(mf->v3 == 0 || (len == 4 && mf->v4 == 0)){
                    test_index_face(mf, NULL, i, len);
                }
                mf->mat_nr = (unsigned char)f->mat_nr;
                mf->flag = (unsigned char)f->flag;
                CustomData_from_bmesh_block(&bm->pdata, &result->faceData, &f->data, i);
                BME_DMloops_to_corners(bm, &result->faceData, i, f,numCol,numTex);
                origindex[i] = ORIGINDEX_NONE;
                i++;
            }
        }
    }
    BLI_edgehash_free(edge_hash, NULL);
    return result;
}