transform_generics.c

Go to the documentation of this file.

/*
 * $Id: transform_generics.c 39156 2011-08-07 17:01:44Z merwin $
 *
 * ***** 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 *****
 */

#include <string.h>
#include <math.h>

#include "MEM_guardedalloc.h"

#include "BLO_sys_types.h" // for intptr_t support

#include "DNA_anim_types.h"
#include "DNA_armature_types.h"
#include "DNA_lattice_types.h"
#include "DNA_screen_types.h"
#include "DNA_space_types.h"
#include "DNA_scene_types.h"
#include "DNA_object_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_view3d_types.h"
#include "DNA_modifier_types.h"

#include "RNA_access.h"

//#include "BIF_screen.h"
//#include "BIF_mywindow.h"
#include "BIF_gl.h"
#include "BIF_glutil.h"
//#include "BIF_editmesh.h"
//#include "BIF_editsima.h"
//#include "BIF_editparticle.h"
//#include "BIF_meshtools.h"

#include "BKE_animsys.h"
#include "BKE_action.h"
#include "BKE_armature.h"
#include "BKE_curve.h"
#include "BKE_depsgraph.h"
#include "BKE_displist.h"
#include "BKE_fcurve.h"
#include "BKE_lattice.h"
#include "BKE_mesh.h"
#include "BKE_nla.h"
#include "BKE_context.h"

#include "ED_anim_api.h"
#include "ED_armature.h"
#include "ED_image.h"
#include "ED_keyframing.h"
#include "ED_markers.h"
#include "ED_mesh.h"
#include "ED_particle.h"
#include "ED_screen_types.h"
#include "ED_space_api.h"
#include "ED_uvedit.h"
#include "ED_view3d.h"
#include "ED_curve.h" /* for ED_curve_editnurbs */

//#include "BDR_unwrapper.h"

#include "BLI_math.h"
#include "BLI_blenlib.h"
#include "BLI_editVert.h"
#include "BLI_rand.h"
#include "BLI_utildefines.h"

#include "WM_types.h"
#include "WM_api.h"

#include "UI_resources.h"

//#include "blendef.h"
//
//#include "mydevice.h"

#include "transform.h"

extern ListBase editelems;

/* ************************** Functions *************************** */

void getViewVector(TransInfo *t, float coord[3], float vec[3])
{
        if (t->persp != RV3D_ORTHO)
        {
                float p1[4], p2[4];
                
                VECCOPY(p1, coord);
                p1[3] = 1.0f;
                VECCOPY(p2, p1);
                p2[3] = 1.0f;
                mul_m4_v4(t->viewmat, p2);
                
                p2[0] = 2.0f * p2[0];
                p2[1] = 2.0f * p2[1];
                p2[2] = 2.0f * p2[2];
                
                mul_m4_v4(t->viewinv, p2);
                
                sub_v3_v3v3(vec, p1, p2);
        }
        else {
                VECCOPY(vec, t->viewinv[2]);
        }
        normalize_v3(vec);
}

/* ************************** GENERICS **************************** */

static void clipMirrorModifier(TransInfo *t, Object *ob)
{
        ModifierData *md= ob->modifiers.first;
        float tolerance[3] = {0.0f, 0.0f, 0.0f};
        int axis = 0;
        
        for (; md; md=md->next) {
                if (md->type==eModifierType_Mirror) {
                        MirrorModifierData *mmd = (MirrorModifierData*) md;
                        
                        if(mmd->flag & MOD_MIR_CLIPPING) {
                                axis = 0;
                                if(mmd->flag & MOD_MIR_AXIS_X) {
                                        axis |= 1;
                                        tolerance[0] = mmd->tolerance;
                                }
                                if(mmd->flag & MOD_MIR_AXIS_Y) {
                                        axis |= 2;
                                        tolerance[1] = mmd->tolerance;
                                }
                                if(mmd->flag & MOD_MIR_AXIS_Z) {
                                        axis |= 4;
                                        tolerance[2] = mmd->tolerance;
                                }
                                if (axis) {
                                        float mtx[4][4], imtx[4][4];
                                        int i;
                                        TransData *td = t->data;
                                        
                                        if (mmd->mirror_ob) {
                                                float obinv[4][4];
                                                
                                                invert_m4_m4(obinv, mmd->mirror_ob->obmat);
                                                mul_m4_m4m4(mtx, ob->obmat, obinv);
                                                invert_m4_m4(imtx, mtx);
                                        }
                                        
                                        for(i = 0 ; i < t->total; i++, td++) {
                                                int clip;
                                                float loc[3], iloc[3];
                                                
                                                if (td->flag & TD_NOACTION)
                                                        break;
                                                if (td->loc==NULL)
                                                        break;
                                                
                                                if (td->flag & TD_SKIP)
                                                        continue;
                                                
                                                copy_v3_v3(loc,  td->loc);
                                                copy_v3_v3(iloc, td->iloc);
                                                
                                                if (mmd->mirror_ob) {
                                                        mul_m4_v3(mtx, loc);
                                                        mul_m4_v3(mtx, iloc);
                                                }
                                                
                                                clip = 0;
                                                if(axis & 1) {
                                                        if(fabs(iloc[0])<=tolerance[0] ||
                                                           loc[0]*iloc[0]<0.0f) {
                                                                loc[0]= 0.0f;
                                                                clip = 1;
                                                        }
                                                }
                                                
                                                if(axis & 2) {
                                                        if(fabs(iloc[1])<=tolerance[1] ||
                                                           loc[1]*iloc[1]<0.0f) {
                                                                loc[1]= 0.0f;
                                                                clip = 1;
                                                        }
                                                }
                                                if(axis & 4) {
                                                        if(fabs(iloc[2])<=tolerance[2] ||
                                                           loc[2]*iloc[2]<0.0f) {
                                                                loc[2]= 0.0f;
                                                                clip = 1;
                                                        }
                                                }
                                                if (clip) {
                                                        if (mmd->mirror_ob) {
                                                                mul_m4_v3(imtx, loc);
                                                        }
                                                        copy_v3_v3(td->loc, loc);
                                                }
                                        }
                                }
                                
                        }
                }
        }
}

/* assumes obedit set to mesh object */
static void editmesh_apply_to_mirror(TransInfo *t)
{
        TransData *td = t->data;
        EditVert *eve;
        int i;
        
        for(i = 0 ; i < t->total; i++, td++) {
                if (td->flag & TD_NOACTION)
                        break;
                if (td->loc==NULL)
                        break;
                if (td->flag & TD_SKIP)
                        continue;
                
                eve = td->extra;
                if (eve) {
                        eve->co[0]= -td->loc[0];
                        eve->co[1]= td->loc[1];
                        eve->co[2]= td->loc[2];
                }
                
                if (td->flag & TD_MIRROR_EDGE)
                {
                        td->loc[0] = 0;
                }
        }
}

/* for the realtime animation recording feature, handle overlapping data */
static void animrecord_check_state (Scene *scene, ID *id, wmTimer *animtimer)
{
        ScreenAnimData *sad= (animtimer) ? animtimer->customdata : NULL;
        
        /* sanity checks */
        if ELEM3(NULL, scene, id, sad)
                return;
        
        /* check if we need a new strip if:
         *      - if animtimer is running 
         *      - we're not only keying for available channels
         *      - the option to add new actions for each round is not enabled
         */
        if (IS_AUTOKEY_FLAG(scene, INSERTAVAIL)==0 && (scene->toolsettings->autokey_flag & ANIMRECORD_FLAG_WITHNLA)) {
                /* if playback has just looped around, we need to add a new NLA track+strip to allow a clean pass to occur */
                if ((sad) && (sad->flag & ANIMPLAY_FLAG_JUMPED)) {
                        AnimData *adt= BKE_animdata_from_id(id);
                        
                        /* perform push-down manually with some differences 
                         * NOTE: BKE_nla_action_pushdown() sync warning...
                         */
                        if ((adt->action) && !(adt->flag & ADT_NLA_EDIT_ON)) {
                                float astart, aend;
                                
                                /* only push down if action is more than 1-2 frames long */
                                calc_action_range(adt->action, &astart, &aend, 1);
                                if (aend > astart+2.0f) {
                                        NlaStrip *strip= add_nlastrip_to_stack(adt, adt->action);
                                        
                                        /* clear reference to action now that we've pushed it onto the stack */
                                        adt->action->id.us--;
                                        adt->action= NULL;
                                        
                                        /* adjust blending + extend so that they will behave correctly */
                                        strip->extendmode= NLASTRIP_EXTEND_NOTHING;
                                        strip->flag &= ~(NLASTRIP_FLAG_AUTO_BLENDS|NLASTRIP_FLAG_SELECT|NLASTRIP_FLAG_ACTIVE);
                                        
                                        /* also, adjust the AnimData's action extend mode to be on 
                                         * 'nothing' so that previous result still play 
                                         */
                                        adt->act_extendmode= NLASTRIP_EXTEND_NOTHING;
                                }
                        }
                }
        }
}

static int fcu_test_selected(FCurve *fcu)
{
        BezTriple *bezt= fcu->bezt;
        unsigned int i;

        if (bezt==NULL) /* ignore baked */
                return 0;

        for (i=0; i < fcu->totvert; i++, bezt++) {
                if (BEZSELECTED(bezt)) return 1;
        }

        return 0;
}

/* called for updating while transform acts, once per redraw */
void recalcData(TransInfo *t)
{
        Base *base = t->scene->basact;

        if (t->spacetype==SPACE_NODE) {
                flushTransNodes(t);
        }
        else if (t->spacetype==SPACE_SEQ) {
                flushTransSeq(t);
        }
        else if (t->spacetype == SPACE_ACTION) {
                Scene *scene= t->scene;
                SpaceAction *saction= (SpaceAction *)t->sa->spacedata.first;
                
                bAnimContext ac= {NULL};
                ListBase anim_data = {NULL, NULL};
                bAnimListElem *ale;
                int filter;
                
                /* initialise relevant anim-context 'context' data from TransInfo data */
                        /* NOTE: sync this with the code in ANIM_animdata_get_context() */
                ac.scene= t->scene;
                ac.obact= OBACT;
                ac.sa= t->sa;
                ac.ar= t->ar;
                ac.spacetype= (t->sa)? t->sa->spacetype : 0;
                ac.regiontype= (t->ar)? t->ar->regiontype : 0;
                
                ANIM_animdata_context_getdata(&ac);
                
                /* perform flush */
                if (ac.datatype == ANIMCONT_GPENCIL) {
                        /* flush transform values back to actual coordinates */
                        flushTransGPactionData(t);
                }
                else {
                        /* get animdata blocks visible in editor, assuming that these will be the ones where things changed */
                        filter= (ANIMFILTER_VISIBLE | ANIMFILTER_ANIMDATA);
                        ANIM_animdata_filter(&ac, &anim_data, filter, ac.data, ac.datatype);
                        
                        /* just tag these animdata-blocks to recalc, assuming that some data there changed 
                         * BUT only do this if realtime updates are enabled
                         */
                        if ((saction->flag & SACTION_NOREALTIMEUPDATES) == 0) {
                                for (ale= anim_data.first; ale; ale= ale->next) {
                                        /* set refresh tags for objects using this animation */
                                        ANIM_list_elem_update(t->scene, ale);
                                }
                        }
                        
                        /* now free temp channels */
                        BLI_freelistN(&anim_data);
                }
        }
        else if (t->spacetype == SPACE_IPO) {
                Scene *scene;
                SpaceIpo *sipo= (SpaceIpo *)t->sa->spacedata.first;
                
                ListBase anim_data = {NULL, NULL};
                bAnimContext ac;
                int filter;
                
                bAnimListElem *ale;
                int dosort = 0;
                
                
                /* initialise relevant anim-context 'context' data from TransInfo data */
                        /* NOTE: sync this with the code in ANIM_animdata_get_context() */
                memset(&ac, 0, sizeof(bAnimContext));
                
                scene= ac.scene= t->scene;
                ac.obact= OBACT;
                ac.sa= t->sa;
                ac.ar= t->ar;
                ac.spacetype= (t->sa)? t->sa->spacetype : 0;
                ac.regiontype= (t->ar)? t->ar->regiontype : 0;
                
                ANIM_animdata_context_getdata(&ac);
                
                /* do the flush first */
                flushTransGraphData(t);
                
                /* get curves to check if a re-sort is needed */
                filter= (ANIMFILTER_VISIBLE | ANIMFILTER_FOREDIT | ANIMFILTER_CURVESONLY | ANIMFILTER_CURVEVISIBLE);
                ANIM_animdata_filter(&ac, &anim_data, filter, ac.data, ac.datatype);
                
                /* now test if there is a need to re-sort */
                for (ale= anim_data.first; ale; ale= ale->next) {
                        FCurve *fcu= (FCurve *)ale->key_data;
                        
                        /* ignore unselected fcurves */
                        if (!fcu_test_selected(fcu))
                                continue;
                        
                        // fixme: only do this for selected verts...
                        ANIM_unit_mapping_apply_fcurve(ac.scene, ale->id, ale->key_data, ANIM_UNITCONV_ONLYSEL|ANIM_UNITCONV_SELVERTS|ANIM_UNITCONV_RESTORE);
                        
                        
                        /* watch it: if the time is wrong: do not correct handles yet */
                        if (test_time_fcurve(fcu))
                                dosort++;
                        else
                                calchandles_fcurve(fcu);
                        
                        /* set refresh tags for objects using this animation,
                         * BUT only if realtime updates are enabled  
                         */
                        if ((sipo->flag & SIPO_NOREALTIMEUPDATES) == 0)
                                ANIM_list_elem_update(t->scene, ale);
                }
                
                /* do resort and other updates? */
                if (dosort) remake_graph_transdata(t, &anim_data);
                
                /* now free temp channels */
                BLI_freelistN(&anim_data);
        }
        else if (t->spacetype == SPACE_NLA) {
                TransDataNla *tdn= (TransDataNla *)t->customData;
                SpaceNla *snla= (SpaceNla *)t->sa->spacedata.first;
                Scene *scene= t->scene;
                double secf= FPS;
                int i;
                
                /* for each strip we've got, perform some additional validation of the values that got set before
                 * using RNA to set the value (which does some special operations when setting these values to make
                 * sure that everything works ok)
                 */
                for (i = 0; i < t->total; i++, tdn++) {
                        NlaStrip *strip= tdn->strip;
                        PointerRNA strip_ptr;
                        short pExceeded, nExceeded, iter;
                        int delta_y1, delta_y2;
                        
                        /* if this tdn has no handles, that means it is just a dummy that should be skipped */
                        if (tdn->handle == 0)
                                continue;
                        
                        /* set refresh tags for objects using this animation,
                         * BUT only if realtime updates are enabled  
                         */
                        if ((snla->flag & SNLA_NOREALTIMEUPDATES) == 0)
                                ANIM_id_update(t->scene, tdn->id);
                        
                        /* if cancelling transform, just write the values without validating, then move on */
                        if (t->state == TRANS_CANCEL) {
                                /* clear the values by directly overwriting the originals, but also need to restore
                                 * endpoints of neighboring transition-strips
                                 */
                                
                                /* start */
                                strip->start= tdn->h1[0];
                                
                                if ((strip->prev) && (strip->prev->type == NLASTRIP_TYPE_TRANSITION))
                                        strip->prev->end= tdn->h1[0];
                                
                                /* end */
                                strip->end= tdn->h2[0];
                                
                                if ((strip->next) && (strip->next->type == NLASTRIP_TYPE_TRANSITION))
                                        strip->next->start= tdn->h2[0];
                                
                                /* flush transforms to child strips (since this should be a meta) */
                                BKE_nlameta_flush_transforms(strip);
                                
                                /* restore to original track (if needed) */
                                if (tdn->oldTrack != tdn->nlt) {
                                        /* just append to end of list for now, since strips get sorted in special_aftertrans_update() */
                                        BLI_remlink(&tdn->nlt->strips, strip);
                                        BLI_addtail(&tdn->oldTrack->strips, strip);
                                }
                                
                                continue;
                        }
                        
                        /* firstly, check if the proposed transform locations would overlap with any neighbouring strips
                         * (barring transitions) which are absolute barriers since they are not being moved
                         *
                         * this is done as a iterative procedure (done 5 times max for now)
                         */
                        for (iter=0; iter < 5; iter++) {
                                pExceeded= ((strip->prev) && (strip->prev->type != NLASTRIP_TYPE_TRANSITION) && (tdn->h1[0] < strip->prev->end));
                                nExceeded= ((strip->next) && (strip->next->type != NLASTRIP_TYPE_TRANSITION) && (tdn->h2[0] > strip->next->start));
                                
                                if ((pExceeded && nExceeded) || (iter == 4) ) {
                                        /* both endpoints exceeded (or iteration ping-pong'd meaning that we need a compromise)
                                         *      - simply crop strip to fit within the bounds of the strips bounding it
                                         *      - if there were no neighbours, clear the transforms (make it default to the strip's current values)
                                         */
                                        if (strip->prev && strip->next) {
                                                tdn->h1[0]= strip->prev->end;
                                                tdn->h2[0]= strip->next->start;
                                        }
                                        else {
                                                tdn->h1[0]= strip->start;
                                                tdn->h2[0]= strip->end;
                                        }
                                }
                                else if (nExceeded) {
                                        /* move backwards */
                                        float offset= tdn->h2[0] - strip->next->start;
                                        
                                        tdn->h1[0] -= offset;
                                        tdn->h2[0] -= offset;
                                }
                                else if (pExceeded) {
                                        /* more forwards */
                                        float offset= strip->prev->end - tdn->h1[0];
                                        
                                        tdn->h1[0] += offset;
                                        tdn->h2[0] += offset;
                                }
                                else /* all is fine and well */
                                        break;
                        }
                        
                        /* handle auto-snapping */
                        switch (snla->autosnap) {
                                case SACTSNAP_FRAME: /* snap to nearest frame/time  */
                                        if (snla->flag & SNLA_DRAWTIME) {
                                                tdn->h1[0]= (float)( floor((tdn->h1[0]/secf) + 0.5f) * secf );
                                                tdn->h2[0]= (float)( floor((tdn->h2[0]/secf) + 0.5f) * secf );
                                        }
                                        else {
                                                tdn->h1[0]= (float)( floor(tdn->h1[0]+0.5f) );
                                                tdn->h2[0]= (float)( floor(tdn->h2[0]+0.5f) );
                                        }
                                        break;
                                
                                case SACTSNAP_MARKER: /* snap to nearest marker */
                                        tdn->h1[0]= (float)ED_markers_find_nearest_marker_time(&t->scene->markers, tdn->h1[0]);
                                        tdn->h2[0]= (float)ED_markers_find_nearest_marker_time(&t->scene->markers, tdn->h2[0]);
                                        break;
                        }
                        
                        /* use RNA to write the values... */
                        // TODO: do we need to write in 2 passes to make sure that no truncation goes on?
                        RNA_pointer_create(NULL, &RNA_NlaStrip, strip, &strip_ptr);
                        
                        RNA_float_set(&strip_ptr, "frame_start", tdn->h1[0]);
                        RNA_float_set(&strip_ptr, "frame_end", tdn->h2[0]);
                        
                        /* flush transforms to child strips (since this should be a meta) */
                        BKE_nlameta_flush_transforms(strip);
                        
                        
                        /* now, check if we need to try and move track
                         *      - we need to calculate both, as only one may have been altered by transform if only 1 handle moved
                         */
                        delta_y1= ((int)tdn->h1[1] / NLACHANNEL_STEP - tdn->trackIndex);
                        delta_y2= ((int)tdn->h2[1] / NLACHANNEL_STEP - tdn->trackIndex);
                        
                        if (delta_y1 || delta_y2) {
                                NlaTrack *track;
                                int delta = (delta_y2) ? delta_y2 : delta_y1;
                                int n;
                                
                                /* move in the requested direction, checking at each layer if there's space for strip to pass through,
                                 * stopping on the last track available or that we're able to fit in
                                 */
                                if (delta > 0) {
                                        for (track=tdn->nlt->next, n=0; (track) && (n < delta); track=track->next, n++) {
                                                /* check if space in this track for the strip */
                                                if (BKE_nlatrack_has_space(track, strip->start, strip->end)) {
                                                        /* move strip to this track */
                                                        BLI_remlink(&tdn->nlt->strips, strip);
                                                        BKE_nlatrack_add_strip(track, strip);
                                                        
                                                        tdn->nlt= track;
                                                        tdn->trackIndex++;
                                                }
                                                else /* can't move any further */
                                                        break;
                                        }
                                }
                                else {
                                        /* make delta 'positive' before using it, since we now know to go backwards */
                                        delta= -delta;
                                        
                                        for (track=tdn->nlt->prev, n=0; (track) && (n < delta); track=track->prev, n++) {
                                                /* check if space in this track for the strip */
                                                if (BKE_nlatrack_has_space(track, strip->start, strip->end)) {
                                                        /* move strip to this track */
                                                        BLI_remlink(&tdn->nlt->strips, strip);
                                                        BKE_nlatrack_add_strip(track, strip);
                                                        
                                                        tdn->nlt= track;
                                                        tdn->trackIndex--;
                                                }
                                                else /* can't move any further */
                                                        break;
                                        }
                                }
                        }
                }
        }
        else if (t->spacetype == SPACE_IMAGE) {
                if (t->obedit && t->obedit->type == OB_MESH) {
                        SpaceImage *sima= t->sa->spacedata.first;
                        
                        flushTransUVs(t);
                        if(sima->flag & SI_LIVE_UNWRAP)
                                ED_uvedit_live_unwrap_re_solve();
                        
                        DAG_id_tag_update(t->obedit->data, 0);
                }
        }
        else if (t->spacetype == SPACE_VIEW3D) {
                
                if (t->obedit) {
                        if ELEM(t->obedit->type, OB_CURVE, OB_SURF) {
                                Curve *cu= t->obedit->data;
                                ListBase *nurbs= ED_curve_editnurbs(cu);
                                Nurb *nu= nurbs->first;

                                if(t->state != TRANS_CANCEL) {
                                        clipMirrorModifier(t, t->obedit);
                                        applyProject(t);
                                }

                                DAG_id_tag_update(t->obedit->data, 0);  /* sets recalc flags */

                                if (t->state == TRANS_CANCEL) {
                                        while(nu) {
                                                calchandlesNurb(nu); /* Cant do testhandlesNurb here, it messes up the h1 and h2 flags */
                                                nu= nu->next;
                                        }
                                } else {
                                        /* Normal updating */
                                        while(nu) {
                                                test2DNurb(nu);
                                                calchandlesNurb(nu);
                                                nu= nu->next;
                                        }
                                }
                        }
                        else if(t->obedit->type==OB_LATTICE) {
                                Lattice *la= t->obedit->data;

                                if(t->state != TRANS_CANCEL) {
                                        applyProject(t);
                                }

                                DAG_id_tag_update(t->obedit->data, 0);  /* sets recalc flags */
        
                                if(la->editlatt->latt->flag & LT_OUTSIDE) outside_lattice(la->editlatt->latt);
                        }
                        else if (t->obedit->type == OB_MESH) {
                                EditMesh *em = ((Mesh*)t->obedit->data)->edit_mesh;
                                /* mirror modifier clipping? */
                                if(t->state != TRANS_CANCEL) {
                                        /* apply clipping after so we never project past the clip plane [#25423] */
                                        applyProject(t);
                                        clipMirrorModifier(t, t->obedit);
                                }
                                if((t->options & CTX_NO_MIRROR) == 0 && (t->flag & T_MIRROR))
                                        editmesh_apply_to_mirror(t);
                                        
                                DAG_id_tag_update(t->obedit->data, 0);  /* sets recalc flags */
                                
                                recalc_editnormals(em);
                        }
                        else if(t->obedit->type==OB_ARMATURE) { /* no recalc flag, does pose */
                                bArmature *arm= t->obedit->data;
                                ListBase *edbo = arm->edbo;
                                EditBone *ebo;
                                TransData *td = t->data;
                                int i;
                                
                                if(t->state != TRANS_CANCEL) {
                                        applyProject(t);
                                }

                                /* Ensure all bones are correctly adjusted */
                                for (ebo = edbo->first; ebo; ebo = ebo->next){
                                        
                                        if ((ebo->flag & BONE_CONNECTED) && ebo->parent){
                                                /* If this bone has a parent tip that has been moved */
                                                if (ebo->parent->flag & BONE_TIPSEL){
                                                        VECCOPY (ebo->head, ebo->parent->tail);
                                                        if(t->mode==TFM_BONE_ENVELOPE) ebo->rad_head= ebo->parent->rad_tail;
                                                }
                                                /* If this bone has a parent tip that has NOT been moved */
                                                else{
                                                        VECCOPY (ebo->parent->tail, ebo->head);
                                                        if(t->mode==TFM_BONE_ENVELOPE) ebo->parent->rad_tail= ebo->rad_head;
                                                }
                                        }
                                        
                                        /* on extrude bones, oldlength==0.0f, so we scale radius of points */
                                        ebo->length= len_v3v3(ebo->head, ebo->tail);
                                        if(ebo->oldlength==0.0f) {
                                                ebo->rad_head= 0.25f*ebo->length;
                                                ebo->rad_tail= 0.10f*ebo->length;
                                                ebo->dist= 0.25f*ebo->length;
                                                if(ebo->parent) {
                                                        if(ebo->rad_head > ebo->parent->rad_tail)
                                                                ebo->rad_head= ebo->parent->rad_tail;
                                                }
                                        }
                                        else if(t->mode!=TFM_BONE_ENVELOPE) {
                                                /* if bones change length, lets do that for the deform distance as well */
                                                ebo->dist*= ebo->length/ebo->oldlength;
                                                ebo->rad_head*= ebo->length/ebo->oldlength;
                                                ebo->rad_tail*= ebo->length/ebo->oldlength;
                                                ebo->oldlength= ebo->length;
                                        }
                                }
                                
                                
                                if (t->mode != TFM_BONE_ROLL)
                                {
                                        /* fix roll */
                                        for(i = 0; i < t->total; i++, td++)
                                        {
                                                if (td->extra)
                                                {
                                                        float vec[3], up_axis[3];
                                                        float qrot[4];
                                                        
                                                        ebo = td->extra;
                                                        VECCOPY(up_axis, td->axismtx[2]);
                                                        
                                                        if (t->mode != TFM_ROTATION)
                                                        {
                                                                sub_v3_v3v3(vec, ebo->tail, ebo->head);
                                                                normalize_v3(vec);
                                                                rotation_between_vecs_to_quat(qrot, td->axismtx[1], vec);
                                                                mul_qt_v3(qrot, up_axis);
                                                        }
                                                        else
                                                        {
                                                                mul_m3_v3(t->mat, up_axis);
                                                        }
                                                        
                                                        ebo->roll = ED_rollBoneToVector(ebo, up_axis, FALSE);
                                                }
                                        }
                                }
                                
                                if(arm->flag & ARM_MIRROR_EDIT)
                                        transform_armature_mirror_update(t->obedit);
                                
                        }
                        else
                        {
                                if(t->state != TRANS_CANCEL) {
                                        applyProject(t);
                                }
                                DAG_id_tag_update(t->obedit->data, 0);  /* sets recalc flags */
                        }
                }
                else if( (t->flag & T_POSE) && t->poseobj) {
                        Object *ob= t->poseobj;
                        bArmature *arm= ob->data;
                        
                        /* if animtimer is running, and the object already has animation data,
                         * check if the auto-record feature means that we should record 'samples'
                         * (i.e. uneditable animation values)
                         *
                         * context is needed for keying set poll() functions.
                         */
                        // TODO: autokeyframe calls need some setting to specify to add samples (FPoints) instead of keyframes?
                        if ((t->animtimer) && (t->context) && IS_AUTOKEY_ON(t->scene)) {
                                int targetless_ik= (t->flag & T_AUTOIK); // XXX this currently doesn't work, since flags aren't set yet!
                                
                                animrecord_check_state(t->scene, &ob->id, t->animtimer);
                                autokeyframe_pose_cb_func(t->context, t->scene, (View3D *)t->view, ob, t->mode, targetless_ik);
                        }
                        
                        /* old optimize trick... this enforces to bypass the depgraph */
                        if (!(arm->flag & ARM_DELAYDEFORM)) {
                                DAG_id_tag_update(&ob->id, OB_RECALC_DATA);  /* sets recalc flags */
                        }
                        else
                                where_is_pose(t->scene, ob);
                }
                else if(base && (base->object->mode & OB_MODE_PARTICLE_EDIT) && PE_get_current(t->scene, base->object)) {
                        if(t->state != TRANS_CANCEL) {
                                applyProject(t);
                        }
                        flushTransParticles(t);
                }
                else {
                        int i;
                        
                        if(t->state != TRANS_CANCEL) {
                                applyProject(t);
                        }

                        for (i = 0; i < t->total; i++) {
                                TransData *td = t->data + i;
                                Object *ob = td->ob;
                                
                                if (td->flag & TD_NOACTION)
                                        break;
                                
                                if (td->flag & TD_SKIP)
                                        continue;
                                
                                /* if animtimer is running, and the object already has animation data,
                                 * check if the auto-record feature means that we should record 'samples'
                                 * (i.e. uneditable animation values)
                                 */
                                // TODO: autokeyframe calls need some setting to specify to add samples (FPoints) instead of keyframes?
                                if ((t->animtimer) && IS_AUTOKEY_ON(t->scene)) {
                                        animrecord_check_state(t->scene, &ob->id, t->animtimer);
                                        autokeyframe_ob_cb_func(t->context, t->scene, (View3D *)t->view, ob, t->mode);
                                }
                                
                                /* sets recalc flags fully, instead of flushing existing ones 
                                 * otherwise proxies don't function correctly
                                 */
                                DAG_id_tag_update(&ob->id, OB_RECALC_OB);
                        }
                }
        }
}

void drawLine(TransInfo *t, float *center, float *dir, char axis, short options)
{
        float v1[3], v2[3], v3[3];
        unsigned char col[3], col2[3];

        if (t->spacetype == SPACE_VIEW3D)
        {
                View3D *v3d = t->view;
                
                glPushMatrix();
                
                //if(t->obedit) glLoadMatrixf(t->obedit->obmat);        // sets opengl viewing
                
                
                copy_v3_v3(v3, dir);
                mul_v3_fl(v3, v3d->far);
                
                sub_v3_v3v3(v2, center, v3);
                add_v3_v3v3(v1, center, v3);
                
                if (options & DRAWLIGHT) {
                        col[0] = col[1] = col[2] = 220;
                }
                else {
                        UI_GetThemeColor3ubv(TH_GRID, col);
                }
                UI_make_axis_color(col, col2, axis);
                glColor3ubv(col2);
                
                setlinestyle(0);
                glBegin(GL_LINE_STRIP);
                        glVertex3fv(v1);
                        glVertex3fv(v2);
                glEnd();
                
                glPopMatrix();
        }
}

void resetTransRestrictions(TransInfo *t)
{
        t->flag &= ~T_ALL_RESTRICTIONS;
}

/* the *op can be NULL */
int initTransInfo (bContext *C, TransInfo *t, wmOperator *op, wmEvent *event)
{
        Scene *sce = CTX_data_scene(C);
        ToolSettings *ts = CTX_data_tool_settings(C);
        ARegion *ar = CTX_wm_region(C);
        ScrArea *sa = CTX_wm_area(C);
        Object *obedit = CTX_data_edit_object(C);
        
        /* moving: is shown in drawobject() (transform color) */
//  TRANSFORM_FIX_ME
//      if(obedit || (t->flag & T_POSE) ) G.moving= G_TRANSFORM_EDIT;
//      else if(G.f & G_PARTICLEEDIT) G.moving= G_TRANSFORM_PARTICLE;
//      else G.moving= G_TRANSFORM_OBJ;
        
        t->scene = sce;
        t->sa = sa;
        t->ar = ar;
        t->obedit = obedit;
        t->settings = ts;
        
        t->data = NULL;
        t->ext = NULL;
        
        t->helpline = HLP_NONE;
        
        t->flag = 0;
        
        t->redraw = 1; /* redraw first time */
        
        if (event)
        {
                VECCOPY2D(t->imval, event->mval);
                t->event_type = event->type;
        }
        else
        {
                t->imval[0] = 0;
                t->imval[1] = 0;
        }
        
        t->con.imval[0] = t->imval[0];
        t->con.imval[1] = t->imval[1];
        
        t->mval[0] = t->imval[0];
        t->mval[1] = t->imval[1];
        
        t->transform            = NULL;
        t->handleEvent          = NULL;
        
        t->total                        = 0;
        
        t->val = 0.0f;
        
        t->vec[0]                       =
                t->vec[1]               =
                t->vec[2]               = 0.0f;
        
        t->center[0]            =
                t->center[1]    =
                t->center[2]    = 0.0f;
        
        unit_m3(t->mat);
        
        /* if there's an event, we're modal */
        if (event) {
                t->flag |= T_MODAL;
        }

        /* Crease needs edge flag */
        if (t->mode == TFM_CREASE) {
                t->options |= CTX_EDGE;
        }


        /* Assign the space type, some exceptions for running in different mode */
        if(sa == NULL) {
                /* background mode */
                t->spacetype= SPACE_EMPTY;
        }
        else if ((ar == NULL) && (sa->spacetype == SPACE_VIEW3D)) {
                /* running in the text editor */
                t->spacetype= SPACE_EMPTY;
        }
        else {
                /* normal operation */
                t->spacetype= sa->spacetype;
        }


        if(t->spacetype == SPACE_VIEW3D)
        {
                View3D *v3d = sa->spacedata.first;
                
                t->view = v3d;
                t->animtimer= CTX_wm_screen(C)->animtimer;
                
                /* turn manipulator off during transform */
                // FIXME: but don't do this when USING the manipulator...
                if (t->flag & T_MODAL) {
                        t->twtype = v3d->twtype;
                        v3d->twtype = 0;
                }

                if(v3d->flag & V3D_ALIGN) t->flag |= T_V3D_ALIGN;
                t->around = v3d->around;
                
                if (op && RNA_struct_find_property(op->ptr, "constraint_orientation") && RNA_property_is_set(op->ptr, "constraint_orientation"))
                {
                        t->current_orientation = RNA_enum_get(op->ptr, "constraint_orientation");
                        
                        if (t->current_orientation >= V3D_MANIP_CUSTOM + BIF_countTransformOrientation(C))
                        {
                                t->current_orientation = V3D_MANIP_GLOBAL;
                        }
                }
                else
                {
                        t->current_orientation = v3d->twmode;
                }

                /* exceptional case */
                if(t->around==V3D_LOCAL && (t->settings->selectmode & SCE_SELECT_FACE)) {
                        if(ELEM3(t->mode, TFM_ROTATION, TFM_RESIZE, TFM_TRACKBALL)) {
                                t->options |= CTX_NO_PET;
                        }
                }

                /* initialize UV transform from */
                if (op && RNA_struct_find_property(op->ptr, "correct_uv")) {
                        if(RNA_property_is_set(op->ptr, "correct_uv")) {
                                if(RNA_boolean_get(op->ptr, "correct_uv")) {
                                        t->settings->uvcalc_flag |= UVCALC_TRANSFORM_CORRECT;
                                }
                                else {
                                        t->settings->uvcalc_flag &= ~UVCALC_TRANSFORM_CORRECT;
                                }
                        }
                        else {
                                RNA_boolean_set(op->ptr, "correct_uv", t->settings->uvcalc_flag & UVCALC_TRANSFORM_CORRECT);
                        }
                }

        }
        else if(t->spacetype==SPACE_IMAGE)
        {
                SpaceImage *sima = sa->spacedata.first;
                // XXX for now, get View2D from the active region
                t->view = &ar->v2d;
                t->around = sima->around;
        }
        else if(t->spacetype==SPACE_NODE)
        {
                // XXX for now, get View2D from the active region
                t->view = &ar->v2d;
                t->around = V3D_CENTER;
        }
        else if(t->spacetype==SPACE_IPO) 
        {
                SpaceIpo *sipo= sa->spacedata.first;
                t->view = &ar->v2d;
                t->around = sipo->around;
        }
        else
        {
                if(ar) {
                        // XXX for now, get View2D  from the active region
                        t->view = &ar->v2d;
                        // XXX for now, the center point is the midpoint of the data
                }
                else {
                        t->view= NULL;
                }
                t->around = V3D_CENTER;
        }
        
        if (op && RNA_property_is_set(op->ptr, "release_confirm"))
        {
                if (RNA_boolean_get(op->ptr, "release_confirm"))
                {
                        t->flag |= T_RELEASE_CONFIRM;
                }
        }
        else
        {
                if (U.flag & USER_RELEASECONFIRM)
                {
                        t->flag |= T_RELEASE_CONFIRM;
                }
        }

        if (op && RNA_struct_find_property(op->ptr, "mirror") && RNA_property_is_set(op->ptr, "mirror"))
        {
                if (RNA_boolean_get(op->ptr, "mirror"))
                {
                        t->flag |= T_MIRROR;
                        t->mirror = 1;
                }
        }
        // Need stuff to take it from edit mesh or whatnot here
        else if (t->spacetype == SPACE_VIEW3D)
        {
                if (t->obedit && t->obedit->type == OB_MESH && (((Mesh *)t->obedit->data)->editflag & ME_EDIT_MIRROR_X))
                {
                        t->flag |= T_MIRROR;
                        t->mirror = 1;
                }
        }
        
        /* setting PET flag only if property exist in operator. Otherwise, assume it's not supported */
        if (op && RNA_struct_find_property(op->ptr, "proportional"))
        {
                if (RNA_property_is_set(op->ptr, "proportional"))
                {
                        switch(RNA_enum_get(op->ptr, "proportional"))
                        {
                        case PROP_EDIT_CONNECTED:
                                t->flag |= T_PROP_CONNECTED;
                        case PROP_EDIT_ON:
                                t->flag |= T_PROP_EDIT;
                                break;
                        }
                }
                else
                {
                        /* use settings from scene only if modal */
                        if (t->flag & T_MODAL)
                        {
                                if ((t->options & CTX_NO_PET) == 0)
                                {
                                        if (t->obedit && ts->proportional != PROP_EDIT_OFF)
                                        {
                                                t->flag |= T_PROP_EDIT;

                                                if(ts->proportional == PROP_EDIT_CONNECTED)
                                                        t->flag |= T_PROP_CONNECTED;
                                        }
                                        else if (t->obedit == NULL && ts->proportional_objects)
                                        {
                                                t->flag |= T_PROP_EDIT;
                                        }
                                }
                        }
                }
                
                if (op && RNA_struct_find_property(op->ptr, "proportional_size") && RNA_property_is_set(op->ptr, "proportional_size"))
                {
                        t->prop_size = RNA_float_get(op->ptr, "proportional_size");
                }
                else
                {
                        t->prop_size = ts->proportional_size;
                }
                
                
                /* TRANSFORM_FIX_ME rna restrictions */
                if (t->prop_size <= 0.00001f)
                {
                        printf("Proportional size (%f) under 0.00001, reseting to 1!\n", t->prop_size);
                        t->prop_size = 1.0f;
                }
                
                if (op && RNA_struct_find_property(op->ptr, "proportional_edit_falloff") && RNA_property_is_set(op->ptr, "proportional_edit_falloff"))
                {
                        t->prop_mode = RNA_enum_get(op->ptr, "proportional_edit_falloff");
                }
                else
                {
                        t->prop_mode = ts->prop_mode;
                }
        }
        else /* add not pet option to context when not available */
        {
                t->options |= CTX_NO_PET;
        }
        
        setTransformViewMatrices(t);
        initNumInput(&t->num);
        
        return 1;
}

/* Here I would suggest only TransInfo related issues, like free data & reset vars. Not redraws */
void postTrans (bContext *C, TransInfo *t)
{
        TransData *td;
        
        if (t->draw_handle_view)
                ED_region_draw_cb_exit(t->ar->type, t->draw_handle_view);
        if (t->draw_handle_apply)
                ED_region_draw_cb_exit(t->ar->type, t->draw_handle_apply);
        if (t->draw_handle_pixel)
                ED_region_draw_cb_exit(t->ar->type, t->draw_handle_pixel);
        if (t->draw_handle_cursor)
                WM_paint_cursor_end(CTX_wm_manager(C), t->draw_handle_cursor);

        if (t->customFree) {
                /* Can take over freeing t->data and data2d etc... */
                t->customFree(t);
        }
        else if (t->customData) {
                MEM_freeN(t->customData);
        }

        /* postTrans can be called when nothing is selected, so data is NULL already */
        if (t->data) {
                int a;
                
                /* free data malloced per trans-data */
                for(a=0, td= t->data; a<t->total; a++, td++) {
                        if (td->flag & TD_BEZTRIPLE) 
                                MEM_freeN(td->hdata);
                }
                MEM_freeN(t->data);
        }
        
        BLI_freelistN(&t->tsnap.points);

        if (t->ext) MEM_freeN(t->ext);
        if (t->data2d) {
                MEM_freeN(t->data2d);
                t->data2d= NULL;
        }
        
        if(t->spacetype==SPACE_IMAGE) {
                SpaceImage *sima= t->sa->spacedata.first;
                if(sima->flag & SI_LIVE_UNWRAP)
                        ED_uvedit_live_unwrap_end(t->state == TRANS_CANCEL);
        }
        else if(t->spacetype==SPACE_VIEW3D) {
                View3D *v3d = t->sa->spacedata.first;
                /* restore manipulator */
                if (t->flag & T_MODAL) {
                        v3d->twtype = t->twtype;
                }
        }
        
        if (t->mouse.data)
        {
                MEM_freeN(t->mouse.data);
        }
}

void applyTransObjects(TransInfo *t)
{
        TransData *td;
        
        for (td = t->data; td < t->data + t->total; td++) {
                VECCOPY(td->iloc, td->loc);
                if (td->ext->rot) {
                        VECCOPY(td->ext->irot, td->ext->rot);
                }
                if (td->ext->size) {
                        VECCOPY(td->ext->isize, td->ext->size);
                }
        }
        recalcData(t);
}

static void restoreElement(TransData *td) {
        /* TransData for crease has no loc */
        if (td->loc) {
                VECCOPY(td->loc, td->iloc);
        }
        if (td->val) {
                *td->val = td->ival;
        }

        if (td->ext && (td->flag&TD_NO_EXT)==0) {
                if (td->ext->rot) {
                        VECCOPY(td->ext->rot, td->ext->irot);
                }
                if(td->ext->rotAngle) {
                        *td->ext->rotAngle= td->ext->irotAngle;
                }
                if(td->ext->rotAxis) {
                        VECCOPY(td->ext->rotAxis, td->ext->irotAxis);
                }
                /* XXX, drotAngle & drotAxis not used yet */
                if (td->ext->size) {
                        VECCOPY(td->ext->size, td->ext->isize);
                }
                if (td->ext->quat) {
                        QUATCOPY(td->ext->quat, td->ext->iquat);
                }
        }
        
        if (td->flag & TD_BEZTRIPLE) {
                *(td->hdata->h1) = td->hdata->ih1;
                *(td->hdata->h2) = td->hdata->ih2;
        }
}

void restoreTransObjects(TransInfo *t)
{
        TransData *td;
        TransData2D *td2d;

        for (td = t->data; td < t->data + t->total; td++) {
                restoreElement(td);
        }
        
        for (td2d=t->data2d; t->data2d && td2d < t->data2d + t->total; td2d++) {
                if (td2d->h1) {
                        td2d->h1[0] = td2d->ih1[0];
                        td2d->h1[1] = td2d->ih1[1];
                }
                if (td2d->h2) {
                        td2d->h2[0] = td2d->ih2[0];
                        td2d->h2[1] = td2d->ih2[1];
                }
        }

        unit_m3(t->mat);
        
        recalcData(t);
}

void calculateCenter2D(TransInfo *t)
{
        if (t->flag & (T_EDIT|T_POSE)) {
                Object *ob= t->obedit?t->obedit:t->poseobj;
                float vec[3];
                
                VECCOPY(vec, t->center);
                mul_m4_v3(ob->obmat, vec);
                projectIntView(t, vec, t->center2d);
        }
        else {
                projectIntView(t, t->center, t->center2d);
        }
}

void calculateCenterCursor(TransInfo *t)
{
        float *cursor;
        
        cursor = give_cursor(t->scene, t->view);
        VECCOPY(t->center, cursor);
        
        /* If edit or pose mode, move cursor in local space */
        if (t->flag & (T_EDIT|T_POSE)) {
                Object *ob = t->obedit?t->obedit:t->poseobj;
                float mat[3][3], imat[3][3];
                
                sub_v3_v3v3(t->center, t->center, ob->obmat[3]);
                copy_m3_m4(mat, ob->obmat);
                invert_m3_m3(imat, mat);
                mul_m3_v3(imat, t->center);
        }
        
        calculateCenter2D(t);
}

void calculateCenterCursor2D(TransInfo *t)
{
        float aspx=1.0, aspy=1.0;
        float *cursor= NULL;
        
        if(t->spacetype==SPACE_IMAGE) {
                SpaceImage *sima= (SpaceImage *)t->sa->spacedata.first;
                /* only space supported right now but may change */
                ED_space_image_uv_aspect(sima, &aspx, &aspy);
                cursor = sima->cursor;
        }
        
        if (cursor) {
                t->center[0] = cursor[0] * aspx;
                t->center[1] = cursor[1] * aspy;
        }
        
        calculateCenter2D(t);
}

static void calculateCenterCursorGraph2D(TransInfo *t)
{
        SpaceIpo *sipo= (SpaceIpo *)t->sa->spacedata.first;
        Scene *scene= t->scene;
        
        /* cursor is combination of current frame, and graph-editor cursor value */
        t->center[0]= (float)(scene->r.cfra);
        t->center[1]= sipo->cursorVal;
        
        calculateCenter2D(t);
}

void calculateCenterMedian(TransInfo *t)
{
        float partial[3] = {0.0f, 0.0f, 0.0f};
        int total = 0;
        int i;
        
        for(i = 0; i < t->total; i++) {
                if (t->data[i].flag & TD_SELECTED) {
                        if (!(t->data[i].flag & TD_NOCENTER))
                        {
                                add_v3_v3(partial, t->data[i].center);
                                total++;
                        }
                }
                else {
                        /*
                           All the selected elements are at the head of the array
                           which means we can stop when it finds unselected data
                        */
                        break;
                }
        }
        if(i)
                mul_v3_fl(partial, 1.0f / total);
        VECCOPY(t->center, partial);
        
        calculateCenter2D(t);
}

void calculateCenterBound(TransInfo *t)
{
        float max[3];
        float min[3];
        int i;
        for(i = 0; i < t->total; i++) {
                if (i) {
                        if (t->data[i].flag & TD_SELECTED) {
                                if (!(t->data[i].flag & TD_NOCENTER))
                                        minmax_v3v3_v3(min, max, t->data[i].center);
                        }
                        else {
                                /*
                                   All the selected elements are at the head of the array
                                   which means we can stop when it finds unselected data
                                */
                                break;
                        }
                }
                else {
                        VECCOPY(max, t->data[i].center);
                        VECCOPY(min, t->data[i].center);
                }
        }
        add_v3_v3v3(t->center, min, max);
        mul_v3_fl(t->center, 0.5);
        
        calculateCenter2D(t);
}

void calculateCenter(TransInfo *t)
{
        switch(t->around) {
        case V3D_CENTER:
                calculateCenterBound(t);
                break;
        case V3D_CENTROID:
                calculateCenterMedian(t);
                break;
        case V3D_CURSOR:
                if(t->spacetype==SPACE_IMAGE)
                        calculateCenterCursor2D(t);
                else if(t->spacetype==SPACE_IPO)
                        calculateCenterCursorGraph2D(t);
                else
                        calculateCenterCursor(t);
                break;
        case V3D_LOCAL:
                /* Individual element center uses median center for helpline and such */
                calculateCenterMedian(t);
                break;
        case V3D_ACTIVE:
                {
                /* set median, and if if if... do object center */
                
                /* EDIT MODE ACTIVE EDITMODE ELEMENT */

                if (t->obedit && t->obedit->type == OB_MESH) {
                        EditSelection ese;
                        EditMesh *em = BKE_mesh_get_editmesh(t->obedit->data);
                        
                        if (EM_get_actSelection(em, &ese)) {
                                EM_editselection_center(t->center, &ese);
                                calculateCenter2D(t);
                                break;
                        }
                } /* END EDIT MODE ACTIVE ELEMENT */
                
                calculateCenterMedian(t);
                if((t->flag & (T_EDIT|T_POSE))==0)
                {
                        Scene *scene = t->scene;
                        Object *ob= OBACT;
                        if(ob)
                        {
                                VECCOPY(t->center, ob->obmat[3]);
                                projectIntView(t, t->center, t->center2d);
                        }
                }
                
                }
        }
        
        /* setting constraint center */
        VECCOPY(t->con.center, t->center);
        if(t->flag & (T_EDIT|T_POSE))
        {
                Object *ob= t->obedit?t->obedit:t->poseobj;
                mul_m4_v3(ob->obmat, t->con.center);
        }
        
        /* for panning from cameraview */
        if(t->flag & T_OBJECT)
        {
                if(t->spacetype==SPACE_VIEW3D && t->ar && t->ar->regiontype == RGN_TYPE_WINDOW)
                {
                        View3D *v3d = t->view;
                        Scene *scene = t->scene;
                        RegionView3D *rv3d = t->ar->regiondata;
                        
                        if(v3d->camera == OBACT && rv3d->persp==RV3D_CAMOB)
                        {
                                float axis[3];
                                /* persinv is nasty, use viewinv instead, always right */
                                VECCOPY(axis, t->viewinv[2]);
                                normalize_v3(axis);
                                
                                /* 6.0 = 6 grid units */
                                axis[0]= t->center[0]- 6.0f*axis[0];
                                axis[1]= t->center[1]- 6.0f*axis[1];
                                axis[2]= t->center[2]- 6.0f*axis[2];
                                
                                projectIntView(t, axis, t->center2d);
                                
                                /* rotate only needs correct 2d center, grab needs initgrabz() value */
                                if(t->mode==TFM_TRANSLATION)
                                {
                                        VECCOPY(t->center, axis);
                                        VECCOPY(t->con.center, t->center);
                                }
                        }
                }
        }
        
        if(t->spacetype==SPACE_VIEW3D)
        {
                /* initgrabz() defines a factor for perspective depth correction, used in window_to_3d_delta() */
                if(t->flag & (T_EDIT|T_POSE)) {
                        Object *ob= t->obedit?t->obedit:t->poseobj;
                        float vec[3];
                        
                        VECCOPY(vec, t->center);
                        mul_m4_v3(ob->obmat, vec);
                        initgrabz(t->ar->regiondata, vec[0], vec[1], vec[2]);
                }
                else {
                        initgrabz(t->ar->regiondata, t->center[0], t->center[1], t->center[2]);
                }
        }
}

void calculatePropRatio(TransInfo *t)
{
        TransData *td = t->data;
        int i;
        float dist;
        short connected = t->flag & T_PROP_CONNECTED;

        if (t->flag & T_PROP_EDIT) {
                for(i = 0 ; i < t->total; i++, td++) {
                        if (td->flag & TD_SELECTED) {
                                td->factor = 1.0f;
                        }
                        else if (t->flag & T_MIRROR && td->loc[0] * t->mirror < -0.00001f)
                        {
                                td->flag |= TD_SKIP;
                                td->factor = 0.0f;
                                restoreElement(td);
                        }
                        else if ((connected &&
                                                (td->flag & TD_NOTCONNECTED || td->dist > t->prop_size))
                                ||
                                        (connected == 0 &&
                                                td->rdist > t->prop_size)) {
                                /*
                                   The elements are sorted according to their dist member in the array,
                                   that means we can stop when it finds one element outside of the propsize.
                                */
                                td->flag |= TD_NOACTION;
                                td->factor = 0.0f;
                                restoreElement(td);
                        }
                        else {
                                /* Use rdist for falloff calculations, it is the real distance */
                                td->flag &= ~TD_NOACTION;
                                
                                if (connected)
                                        dist= (t->prop_size-td->dist)/t->prop_size;
                                else
                                        dist= (t->prop_size-td->rdist)/t->prop_size;

                                /*
                                 * Clamp to positive numbers.
                                 * Certain corner cases with connectivity and individual centers
                                 * can give values of rdist larger than propsize.
                                 */
                                if (dist < 0.0f)
                                        dist = 0.0f;
                                
                                switch(t->prop_mode) {
                                case PROP_SHARP:
                                        td->factor= dist*dist;
                                        break;
                                case PROP_SMOOTH:
                                        td->factor= 3.0f*dist*dist - 2.0f*dist*dist*dist;
                                        break;
                                case PROP_ROOT:
                                        td->factor = (float)sqrt(dist);
                                        break;
                                case PROP_LIN:
                                        td->factor = dist;
                                        break;
                                case PROP_CONST:
                                        td->factor = 1.0f;
                                        break;
                                case PROP_SPHERE:
                                        td->factor = (float)sqrt(2*dist - dist * dist);
                                        break;
                                case PROP_RANDOM:
                                        BLI_srand( BLI_rand() ); /* random seed */
                                        td->factor = BLI_frand()*dist;
                                        break;
                                default:
                                        td->factor = 1;
                                }
                        }
                }
                switch(t->prop_mode) {
                case PROP_SHARP:
                        strcpy(t->proptext, "(Sharp)");
                        break;
                case PROP_SMOOTH:
                        strcpy(t->proptext, "(Smooth)");
                        break;
                case PROP_ROOT:
                        strcpy(t->proptext, "(Root)");
                        break;
                case PROP_LIN:
                        strcpy(t->proptext, "(Linear)");
                        break;
                case PROP_CONST:
                        strcpy(t->proptext, "(Constant)");
                        break;
                case PROP_SPHERE:
                        strcpy(t->proptext, "(Sphere)");
                        break;
                case PROP_RANDOM:
                        strcpy(t->proptext, "(Random)");
                        break;
                default:
                        strcpy(t->proptext, "");
                }
        }
        else {
                for(i = 0 ; i < t->total; i++, td++) {
                        td->factor = 1.0;
                }
                strcpy(t->proptext, "");
        }
}