another compile fix

This commit is contained in:
2009-11-03 05:47:59 +00:00
parent b9f61152f4
commit 40a93188b9

View File

@@ -3371,808 +3371,6 @@ short sharesFace(EditMesh *em, EditEdge* e1, EditEdge* e2)
return 0;
}
typedef struct SlideUv {
float origuv[2];
float *uv_up, *uv_down;
//float *fuv[4];
LinkNode *fuv_list;
} SlideUv;
typedef struct SlideVert {
EditEdge *up,*down;
EditVert origvert;
} SlideVert;
int EdgeSlide(EditMesh *em, wmOperator *op, short immediate, float imperc)
{
return 0;
/* XXX REFACTOR - #if 0'd for now, otherwise can't make 64bit windows builds on 64bit machine */
#if 0
useless:
goto useless // because it doesn't do anything right now
// NumInput num; XXX
Mesh *me= NULL; // XXX
EditFace *efa;
EditEdge *eed,*first=NULL,*last=NULL, *temp = NULL;
EditVert *ev, *nearest;
LinkNode *edgelist = NULL, *vertlist=NULL, *look;
GHash *vertgh;
SlideVert *tempsv;
float perc = 0, percp = 0,vertdist; // XXX, projectMat[4][4];
float shiftlabda= 0.0f,len = 0.0f;
int i = 0,j, numsel, numadded=0, timesthrough = 0, vertsel=0, prop=1, cancel = 0,flip=0;
int wasshift = 0;
/* UV correction vars */
GHash **uvarray= NULL;
int uvlay_tot= CustomData_number_of_layers(&em->fdata, CD_MTFACE);
int uvlay_idx;
SlideUv *slideuvs=NULL, *suv=NULL, *suv_last=NULL;
float uv_tmp[2];
LinkNode *fuv_link;
short event, draw=1;
short mval[2], mvalo[2];
char str[128];
float labda = 0.0f;
// initNumInput(&num);
// view3d_get_object_project_mat(curarea, obedit, projectMat);
mvalo[0] = -1; mvalo[1] = -1;
numsel =0;
// Get number of selected edges and clear some flags
for(eed=em->edges.first;eed;eed=eed->next) {
eed->f1 = 0;
eed->f2 = 0;
if(eed->f & SELECT) numsel++;
}
for(ev=em->verts.first;ev;ev=ev->next) {
ev->f1 = 0;
}
//Make sure each edge only has 2 faces
// make sure loop doesn't cross face
for(efa=em->faces.first;efa;efa=efa->next) {
int ct = 0;
if(efa->e1->f & SELECT) {
ct++;
efa->e1->f1++;
if(efa->e1->f1 > 2) {
BKE_report(op->reports, RPT_ERROR, "3+ face edge");
return 0;
}
}
if(efa->e2->f & SELECT) {
ct++;
efa->e2->f1++;
if(efa->e2->f1 > 2) {
BKE_report(op->reports, RPT_ERROR, "3+ face edge");
return 0;
}
}
if(efa->e3->f & SELECT) {
ct++;
efa->e3->f1++;
if(efa->e3->f1 > 2) {
BKE_report(op->reports, RPT_ERROR, "3+ face edge");
return 0;
}
}
if(efa->e4 && efa->e4->f & SELECT) {
ct++;
efa->e4->f1++;
if(efa->e4->f1 > 2) {
BKE_report(op->reports, RPT_ERROR, "3+ face edge");
return 0;
}
}
// Make sure loop is not 2 edges of same face
if(ct > 1) {
BKE_report(op->reports, RPT_ERROR, "Loop crosses itself");
return 0;
}
}
// Get # of selected verts
for(ev=em->verts.first;ev;ev=ev->next) {
if(ev->f & SELECT) vertsel++;
}
// Test for multiple segments
if(vertsel > numsel+1) {
BKE_report(op->reports, RPT_ERROR, "Please choose a single edge loop");
return 0;
}
// Get the edgeloop in order - mark f1 with SELECT once added
for(eed=em->edges.first;eed;eed=eed->next) {
if((eed->f & SELECT) && !(eed->f1 & SELECT)) {
// If this is the first edge added, just put it in
if(!edgelist) {
BLI_linklist_prepend(&edgelist,eed);
numadded++;
first = eed;
last = eed;
eed->f1 = SELECT;
} else {
if(editedge_getSharedVert(eed, last)) {
BLI_linklist_append(&edgelist,eed);
eed->f1 = SELECT;
numadded++;
last = eed;
} else if(editedge_getSharedVert(eed, first)) {
BLI_linklist_prepend(&edgelist,eed);
eed->f1 = SELECT;
numadded++;
first = eed;
}
}
}
if(eed->next == NULL && numadded != numsel) {
eed=em->edges.first;
timesthrough++;
}
// It looks like there was an unexpected case - Hopefully should not happen
if(timesthrough >= numsel*2) {
BLI_linklist_free(edgelist,NULL);
BKE_report(op->reports, RPT_ERROR, "Could not order loop");
return 0;
}
}
// Put the verts in order in a linklist
look = edgelist;
while(look) {
eed = look->link;
if(!vertlist) {
if(look->next) {
temp = look->next->link;
//This is the first entry takes care of extra vert
if(eed->v1 != temp->v1 && eed->v1 != temp->v2) {
BLI_linklist_append(&vertlist,eed->v1);
eed->v1->f1 = 1;
} else {
BLI_linklist_append(&vertlist,eed->v2);
eed->v2->f1 = 1;
}
} else {
//This is the case that we only have 1 edge
BLI_linklist_append(&vertlist,eed->v1);
eed->v1->f1 = 1;
}
}
// for all the entries
if(eed->v1->f1 != 1) {
BLI_linklist_append(&vertlist,eed->v1);
eed->v1->f1 = 1;
} else if(eed->v2->f1 != 1) {
BLI_linklist_append(&vertlist,eed->v2);
eed->v2->f1 = 1;
}
look = look->next;
}
// populate the SlideVerts
vertgh = BLI_ghash_new(BLI_ghashutil_ptrhash, BLI_ghashutil_ptrcmp);
look = vertlist;
while(look) {
i=0;
j=0;
ev = look->link;
tempsv = (struct SlideVert*)MEM_mallocN(sizeof(struct SlideVert),"SlideVert");
tempsv->up = NULL;
tempsv->down = NULL;
tempsv->origvert.co[0] = ev->co[0];
tempsv->origvert.co[1] = ev->co[1];
tempsv->origvert.co[2] = ev->co[2];
tempsv->origvert.no[0] = ev->no[0];
tempsv->origvert.no[1] = ev->no[1];
tempsv->origvert.no[2] = ev->no[2];
// i is total edges that vert is on
// j is total selected edges that vert is on
for(eed=em->edges.first;eed;eed=eed->next) {
if(eed->v1 == ev || eed->v2 == ev) {
i++;
if(eed->f & SELECT) {
j++;
}
}
}
// If the vert is in the middle of an edge loop, it touches 2 selected edges and 2 unselected edges
if(i == 4 && j == 2) {
for(eed=em->edges.first;eed;eed=eed->next) {
if(editedge_containsVert(eed, ev)) {
if(!(eed->f & SELECT)) {
if(!tempsv->up) {
tempsv->up = eed;
} else if (!(tempsv->down)) {
tempsv->down = eed;
}
}
}
}
}
// If it is on the end of the loop, it touches 1 selected and as least 2 more unselected
if(i >= 3 && j == 1) {
for(eed=em->edges.first;eed;eed=eed->next) {
if(editedge_containsVert(eed, ev) && eed->f & SELECT) {
for(efa = em->faces.first;efa;efa=efa->next) {
if(editface_containsEdge(efa, eed)) {
if(editedge_containsVert(efa->e1, ev) && efa->e1 != eed) {
if(!tempsv->up) {
tempsv->up = efa->e1;
} else if (!(tempsv->down)) {
tempsv->down = efa->e1;
}
}
if(editedge_containsVert(efa->e2, ev) && efa->e2 != eed) {
if(!tempsv->up) {
tempsv->up = efa->e2;
} else if (!(tempsv->down)) {
tempsv->down = efa->e2;
}
}
if(editedge_containsVert(efa->e3, ev) && efa->e3 != eed) {
if(!tempsv->up) {
tempsv->up = efa->e3;
} else if (!(tempsv->down)) {
tempsv->down = efa->e3;
}
}
if(efa->e4) {
if(editedge_containsVert(efa->e4, ev) && efa->e4 != eed) {
if(!tempsv->up) {
tempsv->up = efa->e4;
} else if (!(tempsv->down)) {
tempsv->down = efa->e4;
}
}
}
}
}
}
}
}
if(i > 4 && j == 2) {
BLI_ghash_free(vertgh, NULL, (GHashValFreeFP)MEM_freeN);
BLI_linklist_free(vertlist,NULL);
BLI_linklist_free(edgelist,NULL);
return 0;
}
BLI_ghash_insert(vertgh,ev,tempsv);
look = look->next;
}
// make sure the UPs nad DOWNs are 'faceloops'
// Also find the nearest slidevert to the cursor
// XXX getmouseco_areawin(mval);
look = vertlist;
nearest = NULL;
vertdist = -1;
while(look) {
tempsv = BLI_ghash_lookup(vertgh,(EditVert*)look->link);
if(!tempsv->up || !tempsv->down) {
BKE_report(op->reports, RPT_ERROR, "Missing rails");
BLI_ghash_free(vertgh, NULL, (GHashValFreeFP)MEM_freeN);
BLI_linklist_free(vertlist,NULL);
BLI_linklist_free(edgelist,NULL);
return 0;
}
if(me->drawflag & ME_DRAW_EDGELEN) {
if(!(tempsv->up->f & SELECT)) {
tempsv->up->f |= SELECT;
tempsv->up->f2 |= 16;
} else {
tempsv->up->f2 |= ~16;
}
if(!(tempsv->down->f & SELECT)) {
tempsv->down->f |= SELECT;
tempsv->down->f2 |= 16;
} else {
tempsv->down->f2 |= ~16;
}
}
if(look->next != NULL) {
SlideVert *sv;
sv = BLI_ghash_lookup(vertgh,(EditVert*)look->next->link);
if(sv) {
float tempdist, co[2];
if(!sharesFace(em, tempsv->up,sv->up)) {
EditEdge *swap;
swap = sv->up;
sv->up = sv->down;
sv->down = swap;
}
// view3d_project_float(curarea, tempsv->origvert.co, co, projectMat);
tempdist = sqrt(pow(co[0] - mval[0],2)+pow(co[1] - mval[1],2));
if(vertdist < 0) {
vertdist = tempdist;
nearest = (EditVert*)look->link;
} else if ( tempdist < vertdist ) {
vertdist = tempdist;
nearest = (EditVert*)look->link;
}
}
}
look = look->next;
}
if (uvlay_tot) { // XXX && (scene->toolsettings->uvcalc_flag & UVCALC_TRANSFORM_CORRECT)) {
int maxnum = 0;
uvarray = MEM_callocN( uvlay_tot * sizeof(GHash *), "SlideUVs Array");
suv_last = slideuvs = MEM_callocN( uvlay_tot * (numadded+1) * sizeof(SlideUv), "SlideUVs"); /* uvLayers * verts */
suv = NULL;
for (uvlay_idx=0; uvlay_idx<uvlay_tot; uvlay_idx++) {
uvarray[uvlay_idx] = BLI_ghash_new(BLI_ghashutil_ptrhash, BLI_ghashutil_ptrcmp);
for(ev=em->verts.first;ev;ev=ev->next) {
ev->tmp.l = 0;
}
look = vertlist;
while(look) {
float *uv_new;
tempsv = BLI_ghash_lookup(vertgh,(EditVert*)look->link);
ev = look->link;
suv = NULL;
for(efa = em->faces.first;efa;efa=efa->next) {
if (ev->tmp.l != -1) { /* test for self, in this case its invalid */
int k=-1; /* face corner */
/* Is this vert in the faces corner? */
if (efa->v1==ev) k=0;
else if (efa->v2==ev) k=1;
else if (efa->v3==ev) k=2;
else if (efa->v4 && efa->v4==ev) k=3;
if (k != -1) {
MTFace *tf = CustomData_em_get_n(&em->fdata, efa->data, CD_MTFACE, uvlay_idx);
EditVert *ev_up, *ev_down;
uv_new = tf->uv[k];
if (ev->tmp.l) {
if (fabs(suv->origuv[0]-uv_new[0]) > 0.0001 || fabs(suv->origuv[1]-uv_new[1])) {
ev->tmp.l = -1; /* Tag as invalid */
BLI_linklist_free(suv->fuv_list,NULL);
suv->fuv_list = NULL;
BLI_ghash_remove(uvarray[uvlay_idx],ev, NULL, NULL);
suv = NULL;
break;
}
} else {
ev->tmp.l = 1;
suv = suv_last;
suv->fuv_list = NULL;
suv->uv_up = suv->uv_down = NULL;
suv->origuv[0] = uv_new[0];
suv->origuv[1] = uv_new[1];
BLI_linklist_prepend(&suv->fuv_list, uv_new);
BLI_ghash_insert(uvarray[uvlay_idx],ev,suv);
suv_last++; /* advance to next slide UV */
maxnum++;
}
/* Now get the uvs along the up or down edge if we can */
if (suv) {
if (!suv->uv_up) {
ev_up = editedge_getOtherVert(tempsv->up,ev);
if (efa->v1==ev_up) suv->uv_up = tf->uv[0];
else if (efa->v2==ev_up) suv->uv_up = tf->uv[1];
else if (efa->v3==ev_up) suv->uv_up = tf->uv[2];
else if (efa->v4 && efa->v4==ev_up) suv->uv_up = tf->uv[3];
}
if (!suv->uv_down) { /* if the first face was apart of the up edge, it cant be apart of the down edge */
ev_down = editedge_getOtherVert(tempsv->down,ev);
if (efa->v1==ev_down) suv->uv_down = tf->uv[0];
else if (efa->v2==ev_down) suv->uv_down = tf->uv[1];
else if (efa->v3==ev_down) suv->uv_down = tf->uv[2];
else if (efa->v4 && efa->v4==ev_down) suv->uv_down = tf->uv[3];
}
/* Copy the pointers to the face UV's */
BLI_linklist_prepend(&suv->fuv_list, uv_new);
}
}
}
}
look = look->next;
}
} /* end uv layer loop */
} /* end uvlay_tot */
// we should have enough info now to slide
len = 0.0f;
percp = -1;
while(draw) {
/* For the % calculation */
short mval[2];
float rc[2];
float v2[2], v3[2];
EditVert *centerVert, *upVert, *downVert;
// XXX getmouseco_areawin(mval);
if (!immediate && (mval[0] == mvalo[0] && mval[1] == mvalo[1])) {
PIL_sleep_ms(10);
} else {
char *p = str;
int ctrl= 0, shift= 0; // XXX
mvalo[0] = mval[0];
mvalo[1] = mval[1];
tempsv = BLI_ghash_lookup(vertgh,nearest);
centerVert = editedge_getSharedVert(tempsv->up, tempsv->down);
upVert = editedge_getOtherVert(tempsv->up, centerVert);
downVert = editedge_getOtherVert(tempsv->down, centerVert);
// view3d_project_float(curarea, upVert->co, v2, projectMat);
// view3d_project_float(curarea, downVert->co, v3, projectMat);
/* Determine the % on which the loop should be cut */
rc[0]= v3[0]-v2[0];
rc[1]= v3[1]-v2[1];
len= rc[0]*rc[0]+ rc[1]*rc[1];
if (len==0) {len = 0.0001;}
if (shift) {
wasshift = 0;
labda= ( rc[0]*((mval[0]-v2[0])) + rc[1]*((mval[1]-v2[1])) )/len;
}
else {
if (wasshift==0) {
wasshift = 1;
shiftlabda = labda;
}
labda= ( rc[0]*((mval[0]-v2[0])) + rc[1]*((mval[1]-v2[1])) )/len / 10.0 + shiftlabda;
}
if(labda<=0.0) labda=0.0;
else if(labda>=1.0)labda=1.0;
perc=((1-labda)*2)-1;
if(shift == 0 && ctrl==0) {
perc *= 100;
perc = floor(perc);
perc /= 100;
} else if (ctrl) {
perc *= 10;
perc = floor(perc);
perc /= 10;
}
if(prop == 0) {
len = VecLenf(upVert->co,downVert->co)*((perc+1)/2);
if(flip == 1) {
len = VecLenf(upVert->co,downVert->co) - len;
}
}
if (0) // XXX hasNumInput(&num))
{
// XXX applyNumInput(&num, &perc);
if (prop)
{
perc = MIN2(perc, 1);
perc = MAX2(perc, -1);
}
else
{
len = MIN2(perc, VecLenf(upVert->co,downVert->co));
len = MAX2(len, 0);
}
}
//Adjust Edgeloop
if(immediate) {
perc = imperc;
}
percp = perc;
if(prop) {
look = vertlist;
while(look) {
EditVert *tempev;
ev = look->link;
tempsv = BLI_ghash_lookup(vertgh,ev);
tempev = editedge_getOtherVert((perc>=0)?tempsv->up:tempsv->down, ev);
VecLerpf(ev->co, tempsv->origvert.co, tempev->co, fabs(perc));
if (0) { // XXX scene->toolsettings->uvcalc_flag & UVCALC_TRANSFORM_CORRECT) {
for (uvlay_idx=0; uvlay_idx<uvlay_tot; uvlay_idx++) {
suv = BLI_ghash_lookup( uvarray[uvlay_idx], ev );
if (suv && suv->fuv_list && suv->uv_up && suv->uv_down) {
Vec2Lerpf(uv_tmp, suv->origuv, (perc>=0)?suv->uv_up:suv->uv_down, fabs(perc));
fuv_link = suv->fuv_list;
while (fuv_link) {
VECCOPY2D(((float *)fuv_link->link), uv_tmp);
fuv_link = fuv_link->next;
}
}
}
}
look = look->next;
}
}
else {
//Non prop code
look = vertlist;
while(look) {
float newlen;
ev = look->link;
tempsv = BLI_ghash_lookup(vertgh,ev);
newlen = (len / VecLenf(editedge_getOtherVert(tempsv->up,ev)->co,editedge_getOtherVert(tempsv->down,ev)->co));
if(newlen > 1.0) {newlen = 1.0;}
if(newlen < 0.0) {newlen = 0.0;}
if(flip == 0) {
VecLerpf(ev->co, editedge_getOtherVert(tempsv->down,ev)->co, editedge_getOtherVert(tempsv->up,ev)->co, fabs(newlen));
if (0) { // XXX scene->toolsettings->uvcalc_flag & UVCALC_TRANSFORM_CORRECT) {
/* dont do anything if no UVs */
for (uvlay_idx=0; uvlay_idx<uvlay_tot; uvlay_idx++) {
suv = BLI_ghash_lookup( uvarray[uvlay_idx], ev );
if (suv && suv->fuv_list && suv->uv_up && suv->uv_down) {
Vec2Lerpf(uv_tmp, suv->uv_down, suv->uv_up, fabs(newlen));
fuv_link = suv->fuv_list;
while (fuv_link) {
VECCOPY2D(((float *)fuv_link->link), uv_tmp);
fuv_link = fuv_link->next;
}
}
}
}
} else{
VecLerpf(ev->co, editedge_getOtherVert(tempsv->up,ev)->co, editedge_getOtherVert(tempsv->down,ev)->co, fabs(newlen));
if (0) { // XXX scene->toolsettings->uvcalc_flag & UVCALC_TRANSFORM_CORRECT) {
/* dont do anything if no UVs */
for (uvlay_idx=0; uvlay_idx<uvlay_tot; uvlay_idx++) {
suv = BLI_ghash_lookup( uvarray[uvlay_idx], ev );
if (suv && suv->fuv_list && suv->uv_up && suv->uv_down) {
Vec2Lerpf(uv_tmp, suv->uv_up, suv->uv_down, fabs(newlen));
fuv_link = suv->fuv_list;
while (fuv_link) {
VECCOPY2D(((float *)fuv_link->link), uv_tmp);
fuv_link = fuv_link->next;
}
}
}
}
}
look = look->next;
}
}
// Highlight the Control Edges
// scrarea_do_windraw(curarea);
// persp(PERSP_VIEW);
// glPushMatrix();
// mymultmatrix(obedit->obmat);
glColor3ub(0, 255, 0);
glBegin(GL_LINES);
glVertex3fv(upVert->co);
glVertex3fv(downVert->co);
glEnd();
if(prop == 0) {
// draw start edge for non-prop
glPointSize(5);
glBegin(GL_POINTS);
glColor3ub(255,0,255);
if(flip) {
glVertex3fv(upVert->co);
} else {
glVertex3fv(downVert->co);
}
glEnd();
}
glPopMatrix();
if(prop) {
p += sprintf(str, "(P)ercentage: ");
} else {
p += sprintf(str, "Non (P)rop Length: ");
}
if (0) // XXX hasNumInput(&num))
{
char num_str[20];
// XX outputNumInput(&num, num_str);
p += sprintf(p, "%s", num_str);
}
else
{
if (prop)
{
p += sprintf(p, "%f", perc);
}
else
{
p += sprintf(p, "%f", len);
}
}
if (prop == 0) {
p += sprintf(p, ", Press (F) to flip control side");
}
// headerprint(str);
// screen_swapbuffers();
}
if(!immediate) {
while(qtest()) {
short val=0;
event= extern_qread(&val); // extern_qread stores important events for the mainloop to handle
/* val==0 on key-release event */
if (val) {
if(ELEM(event, ESCKEY, RIGHTMOUSE)) {
prop = 1; // Go back to prop mode
imperc = 0; // This is the % that gets set for immediate
immediate = 1; //Run through eval code 1 more time
cancel = 1; // Return -1
mvalo[0] = -1;
} else if(ELEM3(event, PADENTER, LEFTMOUSE, RETKEY)) {
draw = 0; // End looping now
} else if(event==MIDDLEMOUSE) {
perc = 0;
immediate = 1;
} else if(event==PKEY) {
// XXX initNumInput(&num); /* reset num input */
if (prop) {
prop = 0;
// XXX num.flag |= NUM_NO_NEGATIVE;
}
else {
prop = 1;
}
mvalo[0] = -1;
} else if(event==FKEY) {
(flip == 1) ? (flip = 0):(flip = 1);
mvalo[0] = -1;
} else if(ELEM(event, RIGHTARROWKEY, WHEELUPMOUSE)) { // Scroll through Control Edges
look = vertlist;
while(look) {
if(nearest == (EditVert*)look->link) {
if(look->next == NULL) {
nearest = (EditVert*)vertlist->link;
} else {
nearest = (EditVert*)look->next->link;
}
mvalo[0] = -1;
break;
}
look = look->next;
}
} else if(ELEM(event, LEFTARROWKEY, WHEELDOWNMOUSE)) { // Scroll through Control Edges
look = vertlist;
while(look) {
if(look->next) {
if(look->next->link == nearest) {
nearest = (EditVert*)look->link;
mvalo[0] = -1;
break;
}
} else {
if((EditVert*)vertlist->link == nearest) {
nearest = look->link;
mvalo[0] = -1;
break;
}
}
look = look->next;
}
}
// XXX if (handleNumInput(&num, event))
{
mvalo[0] = -1; /* NEED A BETTER WAY TO TRIGGER REDRAW */
}
}
}
} else {
draw = 0;
}
// DAG_id_flush_update(obedit->data, OB_RECALC_DATA);
}
if(me->drawflag & ME_DRAW_EDGELEN) {
look = vertlist;
while(look) {
tempsv = BLI_ghash_lookup(vertgh,(EditVert*)look->link);
if(tempsv != NULL) {
tempsv->up->f &= !SELECT;
tempsv->down->f &= !SELECT;
}
look = look->next;
}
}
// force_draw(0);
if(!immediate)
EM_automerge(0);
// DAG_id_flush_update(obedit->data, OB_RECALC_DATA);
// scrarea_queue_winredraw(curarea);
//BLI_ghash_free(edgesgh, freeGHash, NULL);
BLI_ghash_free(vertgh, NULL, (GHashValFreeFP)MEM_freeN);
BLI_linklist_free(vertlist,NULL);
BLI_linklist_free(edgelist,NULL);
if (uvlay_tot) { // XXX && (scene->toolsettings->uvcalc_flag & UVCALC_TRANSFORM_CORRECT)) {
for (uvlay_idx=0; uvlay_idx<uvlay_tot; uvlay_idx++) {
BLI_ghash_free(uvarray[uvlay_idx], NULL, NULL);
}
MEM_freeN(uvarray);
MEM_freeN(slideuvs);
suv = suv_last-1;
while (suv >= slideuvs) {
if (suv->fuv_list) {
BLI_linklist_free(suv->fuv_list,NULL);
}
suv--;
}
}
if(cancel == 1) {
return -1;
}
return 1;
#endif // END OF XXX
}
/* -------------------- More tools ------------------ */
#if 0
void mesh_set_face_flags(EditMesh *em, short mode)