transform_orientations.c

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/*
 * ***** 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.
 *
 * Contributor(s): Martin Poirier
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include <string.h>
#include <ctype.h>

#include "MEM_guardedalloc.h"

#include "DNA_armature_types.h"
#include "DNA_curve_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "DNA_screen_types.h"
#include "DNA_view3d_types.h"


#include "BKE_armature.h"
#include "BKE_curve.h"
#include "BKE_context.h"
#include "BKE_report.h"

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

#include "BLF_translation.h"

//#include "BIF_editmesh.h"
//#include "BIF_interface.h"
//#include "BIF_space.h"
//#include "BIF_toolbox.h"

#include "ED_armature.h"
#include "ED_mesh.h"

#include "RNA_define.h"

#include "UI_interface.h"

#include "transform.h"

/* *********************** TransSpace ************************** */

void BIF_clearTransformOrientation(bContext *C)
{
    View3D *v3d = CTX_wm_view3d(C);

    ListBase *transform_spaces = &CTX_data_scene(C)->transform_spaces;
    BLI_freelistN(transform_spaces);
    
    // Need to loop over all view3d
    if(v3d && v3d->twmode >= V3D_MANIP_CUSTOM) {
        v3d->twmode = V3D_MANIP_GLOBAL; /* fallback to global   */
    }
}

static TransformOrientation* findOrientationName(ListBase *lb, const char *name)
{
    TransformOrientation *ts= NULL;

    for (ts= lb->first; ts; ts = ts->next) {
        if (strncmp(ts->name, name, sizeof(ts->name)-1) == 0) {
            return ts;
        }
    }
    
    return NULL;
}

static int uniqueOrientationNameCheck(void *arg, const char *name)
{
    return findOrientationName((ListBase *)arg, name) != NULL;
}

static void uniqueOrientationName(ListBase *lb, char *name)
{
    BLI_uniquename_cb(uniqueOrientationNameCheck, lb, "Space", '.', name, sizeof(((TransformOrientation *)NULL)->name));
}

void BIF_createTransformOrientation(bContext *C, ReportList *reports, char *name, int use, int overwrite)
{
    Object *obedit = CTX_data_edit_object(C);
    Object *ob = CTX_data_active_object(C);
    TransformOrientation *ts = NULL;
    
    if (obedit) {
        if (obedit->type == OB_MESH)
            ts = createMeshSpace(C, reports, name, overwrite);
        else if (obedit->type == OB_ARMATURE)
            ts = createBoneSpace(C, reports, name, overwrite);
    }
    else if (ob && (ob->mode & OB_MODE_POSE)) {
            ts = createBoneSpace(C, reports, name, overwrite);
    }
    else {
        ts = createObjectSpace(C, reports, name, overwrite);
    }
    
    if (use && ts != NULL)
    {
        BIF_selectTransformOrientation(C, ts);
    }
}

TransformOrientation *createObjectSpace(bContext *C, ReportList *UNUSED(reports), char *name, int overwrite)
{
    Base *base = CTX_data_active_base(C);
    Object *ob;
    float mat[3][3];

    if (base == NULL)
        return NULL;


    ob = base->object;
    
    copy_m3_m4(mat, ob->obmat);
    normalize_m3(mat);

    /* use object name if no name is given */
    if (name[0] == 0)
    {
        strncpy(name, ob->id.name+2, MAX_ID_NAME-2);
    }

    return addMatrixSpace(C, mat, name, overwrite); 
}

TransformOrientation *createBoneSpace(bContext *C, ReportList *reports, char *name, int overwrite)
{
    float mat[3][3];
    float normal[3], plane[3];

    getTransformOrientation(C, normal, plane, 0);

    if (createSpaceNormalTangent(mat, normal, plane) == 0) {
        BKE_reports_prepend(reports, "Cannot use zero-length bone");
        return NULL;
    }

    if (name[0] == 0)
    {
        strcpy(name, "Bone");
    }

    return addMatrixSpace(C, mat, name, overwrite);
}

TransformOrientation *createMeshSpace(bContext *C, ReportList *reports, char *name, int overwrite)
{
    float mat[3][3];
    float normal[3], plane[3];
    int type;

    type = getTransformOrientation(C, normal, plane, 0);
    
    switch (type)
    {
        case ORIENTATION_VERT:
            if (createSpaceNormal(mat, normal) == 0) {
                BKE_reports_prepend(reports, "Cannot use vertex with zero-length normal");
                return NULL;
            }
    
            if (name[0] == 0)
            {
                strcpy(name, "Vertex");
            }
            break;
        case ORIENTATION_EDGE:
            if (createSpaceNormalTangent(mat, normal, plane) == 0) {
                BKE_reports_prepend(reports, "Cannot use zero-length edge");
                return NULL;
            }
    
            if (name[0] == 0)
            {
                strcpy(name, "Edge");
            }
            break;
        case ORIENTATION_FACE:
            if (createSpaceNormalTangent(mat, normal, plane) == 0) {
                BKE_reports_prepend(reports, "Cannot use zero-area face");
                return NULL;
            }
    
            if (name[0] == 0)
            {
                strcpy(name, "Face");
            }
            break;
        default:
            return NULL;
            break;
    }

    return addMatrixSpace(C, mat, name, overwrite);
}

int createSpaceNormal(float mat[3][3], float normal[3])
{
    float tangent[3] = {0.0f, 0.0f, 1.0f};
    
    copy_v3_v3(mat[2], normal);
    if (normalize_v3(mat[2]) == 0.0f) {
        return 0; /* error return */
    }

    cross_v3_v3v3(mat[0], mat[2], tangent);
    if (dot_v3v3(mat[0], mat[0]) == 0.0f) {
        tangent[0] = 1.0f;
        tangent[1] = tangent[2] = 0.0f;
        cross_v3_v3v3(mat[0], tangent, mat[2]);
    }

    cross_v3_v3v3(mat[1], mat[2], mat[0]);

    normalize_m3(mat);
    
    return 1;
}

int createSpaceNormalTangent(float mat[3][3], float normal[3], float tangent[3])
{
    copy_v3_v3(mat[2], normal);
    if (normalize_v3(mat[2]) == 0.0f) {
        return 0; /* error return */
    }
    
    /* preempt zero length tangent from causing trouble */
    if (tangent[0] == 0 && tangent[1] == 0 && tangent[2] == 0)
    {
        tangent[2] = 1;
    }

    cross_v3_v3v3(mat[0], mat[2], tangent);
    if (normalize_v3(mat[0]) == 0.0f) {
        return 0; /* error return */
    }
    
    cross_v3_v3v3(mat[1], mat[2], mat[0]);

    normalize_m3(mat);
    
    return 1;
}

TransformOrientation* addMatrixSpace(bContext *C, float mat[3][3], char name[], int overwrite)
{
    ListBase *transform_spaces = &CTX_data_scene(C)->transform_spaces;
    TransformOrientation *ts = NULL;

    if (overwrite)
    {
        ts = findOrientationName(transform_spaces, name);
    }
    else
    {
        uniqueOrientationName(transform_spaces, name);
    }

    /* if not, create a new one */
    if (ts == NULL)
    {
        ts = MEM_callocN(sizeof(TransformOrientation), "UserTransSpace from matrix");
        BLI_addtail(transform_spaces, ts);
        strncpy(ts->name, name, sizeof(ts->name));
    }

    /* copy matrix into transform space */
    copy_m3_m3(ts->mat, mat);

    return ts;
}

void BIF_removeTransformOrientation(bContext *C, TransformOrientation *target)
{
    ListBase *transform_spaces = &CTX_data_scene(C)->transform_spaces;
    TransformOrientation *ts;
    int i;
    
    for (i = 0, ts = transform_spaces->first; ts; ts = ts->next, i++) {
        if (ts == target) {
            View3D *v3d = CTX_wm_view3d(C);
            if(v3d) {
                int selected_index = (v3d->twmode - V3D_MANIP_CUSTOM);
                
                // Transform_fix_me NEED TO DO THIS FOR ALL VIEW3D
                if (selected_index == i) {
                    v3d->twmode = V3D_MANIP_GLOBAL; /* fallback to global   */
                }
                else if (selected_index > i) {
                    v3d->twmode--;
                }
                
            }

            BLI_freelinkN(transform_spaces, ts);
            break;
        }
    }
}

void BIF_removeTransformOrientationIndex(bContext *C, int index)
{
    ListBase *transform_spaces = &CTX_data_scene(C)->transform_spaces;
    TransformOrientation *ts= BLI_findlink(transform_spaces, index);

    if (ts) {
        View3D *v3d = CTX_wm_view3d(C);
        if(v3d) {
            int selected_index = (v3d->twmode - V3D_MANIP_CUSTOM);
            
            // Transform_fix_me NEED TO DO THIS FOR ALL VIEW3D
            if (selected_index == index) {
                v3d->twmode = V3D_MANIP_GLOBAL; /* fallback to global   */
            }
            else if (selected_index > index) {
                v3d->twmode--;
            }
            
        }

        BLI_freelinkN(transform_spaces, ts);
    }
}

void BIF_selectTransformOrientation(bContext *C, TransformOrientation *target)
{
    ListBase *transform_spaces = &CTX_data_scene(C)->transform_spaces;
    View3D *v3d = CTX_wm_view3d(C);
    TransformOrientation *ts;
    int i;
    
    for (i = 0, ts = transform_spaces->first; ts; ts = ts->next, i++) {
        if (ts == target) {
            v3d->twmode = V3D_MANIP_CUSTOM + i;
            break;
        }
    }
}

void BIF_selectTransformOrientationValue(bContext *C, int orientation)
{
    View3D *v3d = CTX_wm_view3d(C);
    if(v3d) /* currently using generic poll */
        v3d->twmode = orientation;
}

EnumPropertyItem *BIF_enumTransformOrientation(bContext *C)
{
    Scene *scene;
    ListBase *transform_spaces;
    TransformOrientation *ts= NULL;

    EnumPropertyItem global = {V3D_MANIP_GLOBAL, "GLOBAL", 0, "Global", ""};
    EnumPropertyItem normal = {V3D_MANIP_NORMAL, "NORMAL", 0, "Normal", ""};
    EnumPropertyItem local = {V3D_MANIP_LOCAL, "LOCAL", 0, "Local", ""};
    EnumPropertyItem view = {V3D_MANIP_VIEW, "VIEW", 0, "View", ""};
    EnumPropertyItem tmp = {0, "", 0, "", ""};
    EnumPropertyItem *item= NULL;
    int i = V3D_MANIP_CUSTOM, totitem= 0;

    RNA_enum_item_add(&item, &totitem, &global);
    RNA_enum_item_add(&item, &totitem, &normal);
    RNA_enum_item_add(&item, &totitem, &local);
    RNA_enum_item_add(&item, &totitem, &view);

    if(C) {
        scene= CTX_data_scene(C);

        if(scene) {
            transform_spaces = &scene->transform_spaces;
            ts = transform_spaces->first;
        }
    }
        
    if(ts)
        RNA_enum_item_add_separator(&item, &totitem);

    for(; ts; ts = ts->next) {
        tmp.identifier = "CUSTOM";
        tmp.name= ts->name;
        tmp.value = i++;
        RNA_enum_item_add(&item, &totitem, &tmp);
    }

    RNA_enum_item_end(&item, &totitem);

    return item;
}

const char * BIF_menustringTransformOrientation(const bContext *C, const char *title)
{
    const char* menu = IFACE_("%t|Global%x0|Local%x1|Gimbal%x4|Normal%x2|View%x3");
    ListBase *transform_spaces = &CTX_data_scene(C)->transform_spaces;
    TransformOrientation *ts;
    int i = V3D_MANIP_CUSTOM;
    char *str_menu, *p;
    const int elem_size = MAX_NAME + 4;

    title = IFACE_(title);

    str_menu = MEM_callocN(strlen(menu) + strlen(title) + 1 + elem_size * BIF_countTransformOrientation(C), TIP_("UserTransSpace from matrix"));
    p = str_menu;
    
    p += sprintf(str_menu, "%s", title);
    p += sprintf(p, "%s", menu);
    
    for (ts = transform_spaces->first; ts; ts = ts->next) {
        p += sprintf(p, "|%s%%x%d", ts->name, i++);
    }
    
    return str_menu;
}

int BIF_countTransformOrientation(const bContext *C)
{
    ListBase *transform_spaces = &CTX_data_scene(C)->transform_spaces;
    TransformOrientation *ts;
    int count = 0;

    for (ts = transform_spaces->first; ts; ts = ts->next) {
        count++;
    }
    
    return count;
}

void applyTransformOrientation(const bContext *C, float mat[3][3], char *name)
{
    TransformOrientation *ts;
    View3D *v3d = CTX_wm_view3d(C);
    int selected_index = (v3d->twmode - V3D_MANIP_CUSTOM);
    int i;
    
    if (selected_index >= 0) {
        for (i = 0, ts = CTX_data_scene(C)->transform_spaces.first; ts; ts = ts->next, i++) {
            if (selected_index == i) {
                
                if (name)
                    strcpy(name, ts->name);
                
                copy_m3_m3(mat, ts->mat);
                break;
            }
        }
      }
}

static int count_bone_select(bArmature *arm, ListBase *lb, int do_it) 
{
    Bone *bone;
    int do_next;
    int total = 0;
    
    for(bone= lb->first; bone; bone= bone->next) {
        bone->flag &= ~BONE_TRANSFORM;
        do_next = do_it;
        if(do_it) {
            if(bone->layer & arm->layer) {
                if (bone->flag & BONE_SELECTED) {
                    bone->flag |= BONE_TRANSFORM;
                    total++;
                    do_next= 0; // no transform on children if one parent bone is selected
                }
            }
        }
        total += count_bone_select(arm, &bone->childbase, do_next);
    }
    
    return total;
}

void initTransformOrientation(bContext *C, TransInfo *t)
{
    View3D *v3d = CTX_wm_view3d(C);
    Object *ob = CTX_data_active_object(C);
    Object *obedit = CTX_data_active_object(C);

    switch(t->current_orientation) {
    case V3D_MANIP_GLOBAL:
        unit_m3(t->spacemtx);
        strcpy(t->spacename, "global");
        break;

    case V3D_MANIP_GIMBAL:
        unit_m3(t->spacemtx);
        if (gimbal_axis(ob, t->spacemtx)) {
            strcpy(t->spacename, "gimbal");
            break;
        }
        /* no gimbal fallthrough to normal */
    case V3D_MANIP_NORMAL:
        if(obedit || (ob && ob->mode & OB_MODE_POSE)) {
            strcpy(t->spacename, "normal");
            ED_getTransformOrientationMatrix(C, t->spacemtx, (v3d->around == V3D_ACTIVE));
            break;
        }
        /* no break we define 'normal' as 'local' in Object mode */
    case V3D_MANIP_LOCAL:
        strcpy(t->spacename, "local");
        
        if(ob) {
            copy_m3_m4(t->spacemtx, ob->obmat);
            normalize_m3(t->spacemtx);
        } else {
            unit_m3(t->spacemtx);
        }
        
        break;
        
    case V3D_MANIP_VIEW:
        if (t->ar->regiontype == RGN_TYPE_WINDOW)
        {
            RegionView3D *rv3d = t->ar->regiondata;
            float mat[3][3];

            strcpy(t->spacename, "view");
            copy_m3_m4(mat, rv3d->viewinv);
            normalize_m3(mat);
            copy_m3_m3(t->spacemtx, mat);
        }
        else
        {
            unit_m3(t->spacemtx);
        }
        break;
    default: /* V3D_MANIP_CUSTOM */
        applyTransformOrientation(C, t->spacemtx, t->spacename);
        break;
    }
}

int getTransformOrientation(const bContext *C, float normal[3], float plane[3], int activeOnly)
{
    Scene *scene = CTX_data_scene(C);
    View3D *v3d = CTX_wm_view3d(C);
    Object *obedit= CTX_data_edit_object(C);
    Base *base;
    Object *ob = OBACT;
    int result = ORIENTATION_NONE;

    normal[0] = normal[1] = normal[2] = 0;
    plane[0] = plane[1] = plane[2] = 0;

    if(obedit)
    {
        float imat[3][3], mat[3][3];
        
        /* we need the transpose of the inverse for a normal... */
        copy_m3_m4(imat, ob->obmat);
        
        invert_m3_m3(mat, imat);
        transpose_m3(mat);

        ob= obedit;

        if(ob->type==OB_MESH)
        {
            Mesh *me= ob->data;
            EditMesh *em = me->edit_mesh;
            EditVert *eve;
            EditSelection ese;
            float vec[3]= {0,0,0};
            
            /* USE LAST SELECTED WITH ACTIVE */
            if (activeOnly && EM_get_actSelection(em, &ese))
            {
                EM_editselection_normal(normal, &ese);
                EM_editselection_plane(plane, &ese);
                
                switch (ese.type)
                {
                    case EDITVERT:
                        result = ORIENTATION_VERT;
                        break;
                    case EDITEDGE:
                        result = ORIENTATION_EDGE;
                        break;
                    case EDITFACE:
                        result = ORIENTATION_FACE;
                        break;
                }
            }
            else
            {
                if (em->totfacesel >= 1)
                {
                    EditFace *efa;
                    
                    for(efa= em->faces.first; efa; efa= efa->next)
                    {
                        if(efa->f & SELECT)
                        {
                            add_v3_v3(normal, efa->n);
                            sub_v3_v3v3(vec, efa->v2->co, efa->v1->co);
                            add_v3_v3(plane, vec);
                        }
                    }
                    
                    result = ORIENTATION_FACE;
                }
                else if (em->totvertsel == 3)
                {
                    EditVert *v1 = NULL, *v2 = NULL, *v3 = NULL;
                    float cotangent[3];
                    
                    for (eve = em->verts.first; eve; eve = eve->next)
                    {
                        if ( eve->f & SELECT ) {
                            if (v1 == NULL) {
                                v1 = eve; 
                            }
                            else if (v2 == NULL) {
                                v2 = eve;
                            }
                            else {
                                v3 = eve;

                                sub_v3_v3v3(plane, v2->co, v1->co);
                                sub_v3_v3v3(cotangent, v3->co, v2->co);
                                cross_v3_v3v3(normal, cotangent, plane);
                                break;
                            }
                        }
                    }

                    /* if there's an edge available, use that for the tangent */
                    if (em->totedgesel >= 1)
                    {
                        EditEdge *eed = NULL;
    
                        for(eed= em->edges.first; eed; eed= eed->next) {
                            if(eed->f & SELECT) {
                                sub_v3_v3v3(plane, eed->v2->co, eed->v1->co);
                                break;
                            }
                        }
                    }

                    result = ORIENTATION_FACE;
                }
                else if (em->totedgesel == 1)
                {
                    EditEdge *eed;

                    for(eed= em->edges.first; eed; eed= eed->next) {
                        if(eed->f & SELECT) {
                            /* use average vert normals as plane and edge vector as normal */
                            copy_v3_v3(plane, eed->v1->no);
                            add_v3_v3(plane, eed->v2->no);
                            sub_v3_v3v3(normal, eed->v2->co, eed->v1->co);
                            break;
                        }
                    }
                    result = ORIENTATION_EDGE;
                }
                else if (em->totvertsel == 2)
                {
                    EditVert *v1 = NULL, *v2 = NULL;
        
                    for (eve = em->verts.first; eve; eve = eve->next)
                    {
                        if ( eve->f & SELECT ) {
                            if (v1 == NULL) {
                                v1 = eve; 
                            }
                            else {
                                v2 = eve;
                                
                                copy_v3_v3(plane, v1->no);
                                add_v3_v3(plane, v2->no);
                                sub_v3_v3v3(normal, v2->co, v1->co);
                                break; 
                            }
                        }
                    }
                    result = ORIENTATION_EDGE;
                }
                else if (em->totvertsel == 1)
                {
                    for (eve = em->verts.first; eve; eve = eve->next)
                    {
                        if ( eve->f & SELECT ) {
                            copy_v3_v3(normal, eve->no);
                            break;
                        }
                    }
                    result = ORIENTATION_VERT;
                }
                else if (em->totvertsel > 3)
                {
                    normal[0] = normal[1] = normal[2] = 0;
                    
                    for (eve = em->verts.first; eve; eve = eve->next)
                    {
                        if ( eve->f & SELECT ) {
                            add_v3_v3(normal, eve->no);
                        }
                    }
                    normalize_v3(normal);
                    result = ORIENTATION_VERT;
                }
            }
        } /* end editmesh */
        else if ELEM(obedit->type, OB_CURVE, OB_SURF)
        {
            Curve *cu= obedit->data;
            Nurb *nu;
            BezTriple *bezt;
            int a;
            ListBase *nurbs= curve_editnurbs(cu);

            for (nu = nurbs->first; nu; nu = nu->next)
            {
                /* only bezier has a normal */
                if(nu->type == CU_BEZIER)
                {
                    bezt= nu->bezt;
                    a= nu->pntsu;
                    while(a--)
                    {
                        /* exception */
                        if ( (bezt->f1 & SELECT) + (bezt->f2 & SELECT) + (bezt->f3 & SELECT) > SELECT )
                        {
                            sub_v3_v3v3(normal, bezt->vec[0], bezt->vec[2]);
                        }
                        else
                        {
                            if(bezt->f1)
                            {
                                sub_v3_v3v3(normal, bezt->vec[0], bezt->vec[1]);
                            }
                            if(bezt->f2)
                            {
                                sub_v3_v3v3(normal, bezt->vec[0], bezt->vec[2]);
                            }
                            if(bezt->f3)
                            {
                                sub_v3_v3v3(normal, bezt->vec[1], bezt->vec[2]);
                            }
                        }
                        bezt++;
                    }
                }
            }
            
            if (normal[0] != 0 || normal[1] != 0 || normal[2] != 0)
            {
                result = ORIENTATION_NORMAL;
            }
        }
        else if(obedit->type==OB_MBALL)
        {
#if 0 // XXX
            /* editmball.c */
            extern ListBase editelems;  /* go away ! */
            MetaElem *ml, *ml_sel = NULL;
    
            /* loop and check that only one element is selected */  
            for (ml = editelems.first; ml; ml = ml->next)
            {
                if (ml->flag & SELECT) {
                    if (ml_sel == NULL)
                    {
                        ml_sel = ml;
                    }
                    else
                    {
                        ml_sel = NULL;
                        break;
                    }
                }
            }
            
            if (ml_sel)
            {   
                float mat[4][4];

                /* Rotation of MetaElem is stored in quat */
                quat_to_mat4( mat,ml_sel->quat);

                copy_v3_v3(normal, mat[2]);

                negate_v3_v3(plane, mat[1]);
                
                result = ORIENTATION_NORMAL;
            }
#endif
            
        }
        else if (obedit->type == OB_ARMATURE)
        {
            bArmature *arm = obedit->data;
            EditBone *ebone;
            
            for (ebone = arm->edbo->first; ebone; ebone=ebone->next) {
                if (arm->layer & ebone->layer)
                {
                    if (ebone->flag & BONE_SELECTED)
                    {
                        float tmat[3][3];
                        float vec[3];
                        sub_v3_v3v3(vec, ebone->tail, ebone->head);
                        normalize_v3(vec);
                        add_v3_v3(normal, vec);
                        
                        vec_roll_to_mat3(vec, ebone->roll, tmat);
                        add_v3_v3(plane, tmat[2]);
                    }
                }
            }
            
            normalize_v3(normal);
            normalize_v3(plane);

            if (plane[0] != 0 || plane[1] != 0 || plane[2] != 0)
            {
                result = ORIENTATION_EDGE;
            }

        }

        /* Vectors from edges don't need the special transpose inverse multiplication */
        if (result == ORIENTATION_EDGE)
        {
            mul_mat3_m4_v3(ob->obmat, normal);
            mul_mat3_m4_v3(ob->obmat, plane);
        }
        else
        {
            mul_m3_v3(mat, normal);
            mul_m3_v3(mat, plane);
        }
    }
    else if(ob && (ob->mode & OB_MODE_POSE))
    {
        bArmature *arm= ob->data;
        bPoseChannel *pchan;
        int totsel;
        
        totsel = count_bone_select(arm, &arm->bonebase, 1);
        if(totsel) {
            float imat[3][3], mat[3][3];

            /* use channels to get stats */
            for(pchan= ob->pose->chanbase.first; pchan; pchan= pchan->next) {
                if (pchan->bone && pchan->bone->flag & BONE_TRANSFORM) {
                    add_v3_v3(normal, pchan->pose_mat[2]);
                    add_v3_v3(plane, pchan->pose_mat[1]);
                }
            }
            negate_v3(plane);
            
            /* we need the transpose of the inverse for a normal... */
            copy_m3_m4(imat, ob->obmat);
            
            invert_m3_m3(mat, imat);
            transpose_m3(mat);
            mul_m3_v3(mat, normal);
            mul_m3_v3(mat, plane);
            
            result = ORIENTATION_EDGE;
        }
    }
    else if(ob && (ob->mode & (OB_MODE_ALL_PAINT|OB_MODE_PARTICLE_EDIT)))
    {
    }
    else {
        /* we need the one selected object, if its not active */
        ob = OBACT;
        if(ob && !(ob->flag & SELECT)) ob = NULL;
        
        for(base= scene->base.first; base; base= base->next) {
            if TESTBASELIB(v3d, base) {
                if(ob == NULL) { 
                    ob= base->object;
                    break;
                }
            }
        }
        
        if (ob) {
            copy_v3_v3(normal, ob->obmat[2]);
            copy_v3_v3(plane, ob->obmat[1]);
        }
        result = ORIENTATION_NORMAL;
    }
    
    return result;
}

void ED_getTransformOrientationMatrix(const bContext *C, float orientation_mat[][3], int activeOnly)
{
    float normal[3]={0.0, 0.0, 0.0};
    float plane[3]={0.0, 0.0, 0.0};

    int type;

    type = getTransformOrientation(C, normal, plane, activeOnly);

    switch (type)
    {
        case ORIENTATION_NORMAL:
            if (createSpaceNormalTangent(orientation_mat, normal, plane) == 0)
            {
                type = ORIENTATION_NONE;
            }
            break;
        case ORIENTATION_VERT:
            if (createSpaceNormal(orientation_mat, normal) == 0)
            {
                type = ORIENTATION_NONE;
            }
            break;
        case ORIENTATION_EDGE:
            if (createSpaceNormalTangent(orientation_mat, normal, plane) == 0)
            {
                type = ORIENTATION_NONE;
            }
            break;
        case ORIENTATION_FACE:
            if (createSpaceNormalTangent(orientation_mat, normal, plane) == 0)
            {
                type = ORIENTATION_NONE;
            }
            break;
    }

    if (type == ORIENTATION_NONE)
    {
        unit_m3(orientation_mat);
    }
}