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|
/**
* $Id$
*
* ***** 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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): Joshua Leung, Blender Foundation
*
* ***** END GPL LICENSE BLOCK *****
*/
#include <stdio.h>
#include <string.h>
#include "MEM_guardedalloc.h"
#include "BLI_blenlib.h"
#include "BLI_math.h"
#include "BLI_dynstr.h"
#include "DNA_action_types.h"
#include "DNA_armature_types.h"
#include "DNA_constraint_types.h"
#include "DNA_curve_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "DNA_screen_types.h"
#include "DNA_text_types.h"
#include "DNA_view3d_types.h"
#include "BKE_action.h"
#include "BKE_armature.h"
#include "BKE_constraint.h"
#include "BKE_context.h"
#include "BKE_depsgraph.h"
#include "BKE_global.h"
#include "BKE_main.h"
#include "BKE_object.h"
#include "BKE_report.h"
#include "BKE_utildefines.h"
#include "BIK_api.h"
#ifndef DISABLE_PYTHON
#include "BPY_extern.h"
#endif
#include "WM_api.h"
#include "WM_types.h"
#include "RNA_access.h"
#include "RNA_define.h"
#include "RNA_enum_types.h"
#include "RNA_types.h"
#include "ED_object.h"
#include "ED_screen.h"
#include "UI_interface.h"
#include "object_intern.h"
/* -------------- Get Active Constraint Data ---------------------- */
/* if object in posemode, active bone constraints, else object constraints */
ListBase *get_active_constraints (Object *ob)
{
if (ob == NULL)
return NULL;
if (ob->mode & OB_MODE_POSE) {
bPoseChannel *pchan;
pchan = get_active_posechannel(ob);
if (pchan)
return &pchan->constraints;
}
else
return &ob->constraints;
return NULL;
}
/* single constraint */
bConstraint *get_active_constraint (Object *ob)
{
return constraints_get_active(get_active_constraints(ob));
}
/* -------------- Constraint Management (Add New, Remove, Rename) -------------------- */
/* ------------- PyConstraints ------------------ */
/* this callback sets the text-file to be used for selected menu item */
void validate_pyconstraint_cb (void *arg1, void *arg2)
{
bPythonConstraint *data = arg1;
Text *text= NULL;
int index = *((int *)arg2);
int i;
/* exception for no script */
if (index) {
/* innovative use of a for...loop to search */
for (text=G.main->text.first, i=1; text && index!=i; i++, text=text->id.next);
}
data->text = text;
}
#ifndef DISABLE_PYTHON
/* this returns a string for the list of usable pyconstraint script names */
char *buildmenu_pyconstraints (Text *con_text, int *pyconindex)
{
DynStr *pupds= BLI_dynstr_new();
Text *text;
char *str;
char buf[64];
int i;
/* add title first */
sprintf(buf, "Scripts: %%t|[None]%%x0|");
BLI_dynstr_append(pupds, buf);
/* init active-index first */
if (con_text == NULL)
*pyconindex= 0;
/* loop through markers, adding them */
for (text=G.main->text.first, i=1; text; i++, text=text->id.next) {
/* this is important to ensure that right script is shown as active */
if (text == con_text) *pyconindex = i;
/* only include valid pyconstraint scripts */
if (BPY_is_pyconstraint(text)) {
BLI_dynstr_append(pupds, text->id.name+2);
sprintf(buf, "%%x%d", i);
BLI_dynstr_append(pupds, buf);
if (text->id.next)
BLI_dynstr_append(pupds, "|");
}
}
/* convert to normal MEM_malloc'd string */
str= BLI_dynstr_get_cstring(pupds);
BLI_dynstr_free(pupds);
return str;
}
#endif /* DISABLE_PYTHON */
/* this callback gets called when the 'refresh' button of a pyconstraint gets pressed */
void update_pyconstraint_cb (void *arg1, void *arg2)
{
Object *owner= (Object *)arg1;
bConstraint *con= (bConstraint *)arg2;
#ifndef DISABLE_PYTHON
if (owner && con)
BPY_pyconstraint_update(owner, con);
#endif
}
/* helper function for add_constriant - sets the last target for the active constraint */
static void set_constraint_nth_target (bConstraint *con, Object *target, char subtarget[], int index)
{
bConstraintTypeInfo *cti= constraint_get_typeinfo(con);
ListBase targets = {NULL, NULL};
bConstraintTarget *ct;
int num_targets, i;
if (cti && cti->get_constraint_targets) {
cti->get_constraint_targets(con, &targets);
num_targets= BLI_countlist(&targets);
if (index < 0) {
if (abs(index) < num_targets)
index= num_targets - abs(index);
else
index= num_targets - 1;
}
else if (index >= num_targets) {
index= num_targets - 1;
}
for (ct=targets.first, i=0; ct; ct= ct->next, i++) {
if (i == index) {
ct->tar= target;
strcpy(ct->subtarget, subtarget);
break;
}
}
if (cti->flush_constraint_targets)
cti->flush_constraint_targets(con, &targets, 0);
}
}
/* ------------- Constraint Sanity Testing ------------------- */
/* checks validity of object pointers, and NULLs,
* if Bone doesnt exist it sets the CONSTRAINT_DISABLE flag
*/
static void test_constraints (Object *owner, const char substring[])
{
bConstraint *curcon;
ListBase *conlist= NULL;
int type;
if (owner==NULL) return;
/* Check parents */
if (strlen(substring)) {
switch (owner->type) {
case OB_ARMATURE:
type = CONSTRAINT_OBTYPE_BONE;
break;
default:
type = CONSTRAINT_OBTYPE_OBJECT;
break;
}
}
else
type = CONSTRAINT_OBTYPE_OBJECT;
/* Get the constraint list for this object */
switch (type) {
case CONSTRAINT_OBTYPE_OBJECT:
conlist = &owner->constraints;
break;
case CONSTRAINT_OBTYPE_BONE:
{
Bone *bone;
bPoseChannel *chan;
bone = get_named_bone( ((bArmature *)owner->data), substring );
chan = get_pose_channel(owner->pose, substring);
if (bone && chan) {
conlist = &chan->constraints;
}
}
break;
}
/* Check all constraints - is constraint valid? */
if (conlist) {
for (curcon = conlist->first; curcon; curcon=curcon->next) {
bConstraintTypeInfo *cti= constraint_get_typeinfo(curcon);
ListBase targets = {NULL, NULL};
bConstraintTarget *ct;
/* clear disabled-flag first */
curcon->flag &= ~CONSTRAINT_DISABLE;
if (curcon->type == CONSTRAINT_TYPE_KINEMATIC) {
bKinematicConstraint *data = curcon->data;
/* bad: we need a separate set of checks here as poletarget is
* optional... otherwise poletarget must exist too or else
* the constraint is deemed invalid
*/
/* default IK check ... */
if (exist_object(data->tar) == 0) {
data->tar = NULL;
curcon->flag |= CONSTRAINT_DISABLE;
}
else if (data->tar == owner) {
if (!get_named_bone(get_armature(owner), data->subtarget)) {
curcon->flag |= CONSTRAINT_DISABLE;
}
}
if (data->poletar) {
if (exist_object(data->poletar) == 0) {
data->poletar = NULL;
curcon->flag |= CONSTRAINT_DISABLE;
}
else if (data->poletar == owner) {
if (!get_named_bone(get_armature(owner), data->polesubtarget)) {
curcon->flag |= CONSTRAINT_DISABLE;
}
}
}
/* ... can be overwritten here */
BIK_test_constraint(owner, curcon);
/* targets have already been checked for this */
continue;
}
else if (curcon->type == CONSTRAINT_TYPE_ACTION) {
bActionConstraint *data = curcon->data;
/* validate action */
if (data->act == NULL)
curcon->flag |= CONSTRAINT_DISABLE;
}
else if (curcon->type == CONSTRAINT_TYPE_FOLLOWPATH) {
bFollowPathConstraint *data = curcon->data;
/* don't allow track/up axes to be the same */
if (data->upflag==data->trackflag)
curcon->flag |= CONSTRAINT_DISABLE;
if (data->upflag+3==data->trackflag)
curcon->flag |= CONSTRAINT_DISABLE;
}
else if (curcon->type == CONSTRAINT_TYPE_TRACKTO) {
bTrackToConstraint *data = curcon->data;
/* don't allow track/up axes to be the same */
if (data->reserved2==data->reserved1)
curcon->flag |= CONSTRAINT_DISABLE;
if (data->reserved2+3==data->reserved1)
curcon->flag |= CONSTRAINT_DISABLE;
}
else if (curcon->type == CONSTRAINT_TYPE_LOCKTRACK) {
bLockTrackConstraint *data = curcon->data;
if (data->lockflag==data->trackflag)
curcon->flag |= CONSTRAINT_DISABLE;
if (data->lockflag+3==data->trackflag)
curcon->flag |= CONSTRAINT_DISABLE;
}
else if (curcon->type == CONSTRAINT_TYPE_SPLINEIK) {
bSplineIKConstraint *data = curcon->data;
/* if the number of points does not match the amount required by the chain length,
* free the points array and request a rebind...
*/
if ((data->points == NULL) || (data->numpoints != data->chainlen+1))
{
/* free the points array */
if (data->points) {
MEM_freeN(data->points);
data->points = NULL;
}
/* clear the bound flag, forcing a rebind next time this is evaluated */
data->flag &= ~CONSTRAINT_SPLINEIK_BOUND;
}
}
/* Check targets for constraints */
if (cti && cti->get_constraint_targets) {
cti->get_constraint_targets(curcon, &targets);
/* disable and clear constraints targets that are incorrect */
for (ct= targets.first; ct; ct= ct->next) {
/* general validity checks (for those constraints that need this) */
if (exist_object(ct->tar) == 0) {
ct->tar = NULL;
curcon->flag |= CONSTRAINT_DISABLE;
}
else if (ct->tar == owner) {
if (!get_named_bone(get_armature(owner), ct->subtarget)) {
curcon->flag |= CONSTRAINT_DISABLE;
}
}
/* target checks for specific constraints */
if (ELEM3(curcon->type, CONSTRAINT_TYPE_FOLLOWPATH, CONSTRAINT_TYPE_CLAMPTO, CONSTRAINT_TYPE_SPLINEIK)) {
if (ct->tar) {
if (ct->tar->type != OB_CURVE) {
ct->tar= NULL;
curcon->flag |= CONSTRAINT_DISABLE;
}
else {
Curve *cu= ct->tar->data;
/* auto-set 'Path' setting on curve so this works */
cu->flag |= CU_PATH;
}
}
}
}
/* free any temporary targets */
if (cti->flush_constraint_targets)
cti->flush_constraint_targets(curcon, &targets, 0);
}
}
}
}
static void test_bonelist_constraints (Object *owner, ListBase *list)
{
Bone *bone;
for (bone = list->first; bone; bone = bone->next) {
test_constraints(owner, bone->name);
test_bonelist_constraints(owner, &bone->childbase);
}
}
void object_test_constraints (Object *owner)
{
test_constraints(owner, "");
if (owner->type==OB_ARMATURE) {
bArmature *arm= get_armature(owner);
if (arm)
test_bonelist_constraints(owner, &arm->bonebase);
}
}
/* ********************** CONSTRAINT-SPECIFIC STUFF ********************* */
/* ---------- Distance-Dependent Constraints ---------- */
/* StretchTo, Limit Distance */
static int stretchto_poll(bContext *C)
{
PointerRNA ptr= CTX_data_pointer_get_type(C, "constraint", &RNA_StretchToConstraint);
return (ptr.id.data && ptr.data);
}
static int stretchto_reset_exec (bContext *C, wmOperator *op)
{
PointerRNA ptr= CTX_data_pointer_get_type(C, "constraint", &RNA_StretchToConstraint);
/* just set original length to 0.0, which will cause a reset on next recalc */
RNA_float_set(&ptr, "original_length", 0.0f);
WM_event_add_notifier(C, NC_OBJECT|ND_CONSTRAINT, NULL);
return OPERATOR_FINISHED;
}
void CONSTRAINT_OT_stretchto_reset (wmOperatorType *ot)
{
/* identifiers */
ot->name= "Reset Original Length";
ot->idname= "CONSTRAINT_OT_stretchto_reset";
ot->description= "Reset original length of bone for Stretch To Constraint.";
ot->exec= stretchto_reset_exec;
ot->poll= stretchto_poll;
/* flags */
ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
}
static int limitdistance_reset_exec (bContext *C, wmOperator *op)
{
PointerRNA ptr= CTX_data_pointer_get_type(C, "constraint", &RNA_LimitDistanceConstraint);
/* just set distance to 0.0, which will cause a reset on next recalc */
RNA_float_set(&ptr, "distance", 0.0f);
WM_event_add_notifier(C, NC_OBJECT|ND_CONSTRAINT, NULL);
return OPERATOR_FINISHED;
}
static int limitdistance_poll(bContext *C)
{
PointerRNA ptr= CTX_data_pointer_get_type(C, "constraint", &RNA_LimitDistanceConstraint);
return (ptr.id.data && ptr.data);
}
void CONSTRAINT_OT_limitdistance_reset (wmOperatorType *ot)
{
/* identifiers */
ot->name= "Reset Distance";
ot->idname= "CONSTRAINT_OT_limitdistance_reset";
ot->description= "Reset limiting distance for Limit Distance Constraint.";
ot->exec= limitdistance_reset_exec;
ot->poll= limitdistance_poll;
/* flags */
ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
}
/* ------------- Child-Of Constraint ------------------ */
static int childof_poll(bContext *C)
{
PointerRNA ptr= CTX_data_pointer_get_type(C, "constraint", &RNA_ChildOfConstraint);
return (ptr.id.data && ptr.data);
}
/* ChildOf Constraint - set inverse callback */
static int childof_set_inverse_exec (bContext *C, wmOperator *op)
{
PointerRNA ptr= CTX_data_pointer_get_type(C, "constraint", &RNA_ChildOfConstraint);
Scene *scene= CTX_data_scene(C);
Object *ob= ptr.id.data;
bConstraint *con= ptr.data;
bChildOfConstraint *data= (bChildOfConstraint *)con->data;
bPoseChannel *pchan= NULL;
/* try to find a pose channel */
// TODO: get from context instead?
if (ob && ob->pose)
pchan= get_active_posechannel(ob);
/* calculate/set inverse matrix */
if (pchan) {
float pmat[4][4], cinf;
float imat[4][4], tmat[4][4];
/* make copy of pchan's original pose-mat (for use later) */
copy_m4_m4(pmat, pchan->pose_mat);
/* disable constraint for pose to be solved without it */
cinf= con->enforce;
con->enforce= 0.0f;
/* solve pose without constraint */
where_is_pose(scene, ob);
/* determine effect of constraint by removing the newly calculated
* pchan->pose_mat from the original pchan->pose_mat, thus determining
* the effect of the constraint
*/
invert_m4_m4(imat, pchan->pose_mat);
mul_m4_m4m4(tmat, imat, pmat);
invert_m4_m4(data->invmat, tmat);
/* recalculate pose with new inv-mat */
con->enforce= cinf;
where_is_pose(scene, ob);
}
else if (ob) {
Object workob;
/* use what_does_parent to find inverse - just like for normal parenting.
* NOTE: what_does_parent uses a static workob defined in object.c
*/
what_does_parent(scene, ob, &workob);
invert_m4_m4(data->invmat, workob.obmat);
}
else
unit_m4(data->invmat);
WM_event_add_notifier(C, NC_OBJECT|ND_CONSTRAINT, ob);
return OPERATOR_FINISHED;
}
void CONSTRAINT_OT_childof_set_inverse (wmOperatorType *ot)
{
/* identifiers */
ot->name= "Set Inverse";
ot->idname= "CONSTRAINT_OT_childof_set_inverse";
ot->description= "Set inverse correction for ChildOf constraint.";
ot->exec= childof_set_inverse_exec;
ot->poll= childof_poll;
/* flags */
ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
}
/* ChildOf Constraint - clear inverse callback */
static int childof_clear_inverse_exec (bContext *C, wmOperator *op)
{
PointerRNA ptr= CTX_data_pointer_get_type(C, "constraint", &RNA_ChildOfConstraint);
Object *ob= ptr.id.data;
bConstraint *con= ptr.data;
bChildOfConstraint *data= (bChildOfConstraint *)con->data;
/* simply clear the matrix */
unit_m4(data->invmat);
WM_event_add_notifier(C, NC_OBJECT|ND_CONSTRAINT, ob);
return OPERATOR_FINISHED;
}
void CONSTRAINT_OT_childof_clear_inverse (wmOperatorType *ot)
{
/* identifiers */
ot->name= "Clear Inverse";
ot->idname= "CONSTRAINT_OT_childof_clear_inverse";
ot->description= "Clear inverse correction for ChildOf constraint.";
ot->exec= childof_clear_inverse_exec;
ot->poll= childof_poll;
/* flags */
ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
}
/***************************** BUTTONS ****************************/
/* Rename the given constraint, con already has the new name */
void ED_object_constraint_rename(Object *ob, bConstraint *con, char *oldname)
{
bConstraint *tcon;
ListBase *conlist= NULL;
int from_object= 0;
/* get context by searching for con (primitive...) */
for (tcon= ob->constraints.first; tcon; tcon= tcon->next) {
if (tcon==con)
break;
}
if (tcon) {
conlist= &ob->constraints;
from_object= 1;
}
else if (ob->pose) {
bPoseChannel *pchan;
for (pchan=ob->pose->chanbase.first; pchan; pchan=pchan->next) {
for (tcon= pchan->constraints.first; tcon; tcon= tcon->next) {
if (tcon==con)
break;
}
if (tcon)
break;
}
if (tcon) {
conlist= &pchan->constraints;
}
}
if (conlist==NULL) {
printf("rename constraint failed\n"); /* should not happen in UI */
return;
}
/* first make sure it's a unique name within context */
unique_constraint_name(con, conlist);
}
void ED_object_constraint_set_active(Object *ob, bConstraint *con)
{
/* lets be nice and escape if its active already */
// NOTE: this assumes that the stack doesn't have other active ones set...
if (con && (con->flag & CONSTRAINT_ACTIVE))
return ;
constraints_set_active(get_active_constraints(ob), con);
}
void ED_object_constraint_update(Object *ob)
{
if(ob->pose) update_pose_constraint_flags(ob->pose);
object_test_constraints(ob);
if(ob->type==OB_ARMATURE) DAG_id_flush_update(&ob->id, OB_RECALC_DATA|OB_RECALC_OB);
else DAG_id_flush_update(&ob->id, OB_RECALC_OB);
}
void ED_object_constraint_dependency_update(Scene *scene, Object *ob)
{
ED_object_constraint_update(ob);
if(ob->pose) ob->pose->flag |= POSE_RECALC; // checks & sorts pose channels
DAG_scene_sort(scene);
}
static int constraint_poll(bContext *C)
{
PointerRNA ptr= CTX_data_pointer_get_type(C, "constraint", &RNA_Constraint);
return (ptr.id.data && ptr.data);
}
static int constraint_delete_exec (bContext *C, wmOperator *op)
{
PointerRNA ptr= CTX_data_pointer_get_type(C, "constraint", &RNA_Constraint);
Object *ob= ptr.id.data;
bConstraint *con= ptr.data;
ListBase *lb;
/* remove constraint itself */
lb= get_active_constraints(ob);
if (BLI_findindex(lb, con) == -1)
/* abnormal situation which happens on bone constraint when the armature is not in pose mode */
return OPERATOR_CANCELLED;
free_constraint_data(con);
BLI_freelinkN(lb, con);
ED_object_constraint_set_active(ob, NULL);
WM_event_add_notifier(C, NC_OBJECT|ND_CONSTRAINT, ob);
return OPERATOR_FINISHED;
}
void CONSTRAINT_OT_delete (wmOperatorType *ot)
{
/* identifiers */
ot->name= "Delete Constraint";
ot->idname= "CONSTRAINT_OT_delete";
ot->description= "Remove constraitn from constraint stack.";
/* callbacks */
ot->exec= constraint_delete_exec;
ot->poll= constraint_poll;
/* flags */
ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
}
static int constraint_move_down_exec (bContext *C, wmOperator *op)
{
PointerRNA ptr= CTX_data_pointer_get_type(C, "constraint", &RNA_Constraint);
Object *ob= ptr.id.data;
bConstraint *con= ptr.data;
if (con->next) {
ListBase *conlist= get_active_constraints(ob);
bConstraint *nextCon= con->next;
/* insert the nominated constraint after the one that used to be after it */
BLI_remlink(conlist, con);
BLI_insertlinkafter(conlist, nextCon, con);
WM_event_add_notifier(C, NC_OBJECT|ND_CONSTRAINT, ob);
return OPERATOR_FINISHED;
}
return OPERATOR_CANCELLED;
}
void CONSTRAINT_OT_move_down (wmOperatorType *ot)
{
/* identifiers */
ot->name= "Move Constraint Down";
ot->idname= "CONSTRAINT_OT_move_down";
ot->description= "Move constraint down constraint stack.";
/* callbacks */
ot->exec= constraint_move_down_exec;
ot->poll= constraint_poll;
/* flags */
ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
}
static int constraint_move_up_exec (bContext *C, wmOperator *op)
{
PointerRNA ptr= CTX_data_pointer_get_type(C, "constraint", &RNA_Constraint);
Object *ob= ptr.id.data;
bConstraint *con= ptr.data;
if (con->prev) {
ListBase *conlist= get_active_constraints(ob);
bConstraint *prevCon= con->prev;
/* insert the nominated constraint before the one that used to be before it */
BLI_remlink(conlist, con);
BLI_insertlinkbefore(conlist, prevCon, con);
WM_event_add_notifier(C, NC_OBJECT|ND_CONSTRAINT, ob);
return OPERATOR_FINISHED;
}
return OPERATOR_CANCELLED;
}
void CONSTRAINT_OT_move_up (wmOperatorType *ot)
{
/* identifiers */
ot->name= "Move Constraint Up";
ot->idname= "CONSTRAINT_OT_move_up";
ot->description= "Move constraint up constraint stack.";
/* callbacks */
ot->exec= constraint_move_up_exec;
ot->poll= constraint_poll;
/* flags */
ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
}
/***************************** OPERATORS ****************************/
/************************ remove constraint operators *********************/
static int pose_constraints_clear_exec(bContext *C, wmOperator *op)
{
Object *ob= CTX_data_active_object(C);
Scene *scene= CTX_data_scene(C);
/* free constraints for all selected bones */
CTX_DATA_BEGIN(C, bPoseChannel*, pchan, selected_pchans)
{
free_constraints(&pchan->constraints);
pchan->constflag &= ~(PCHAN_HAS_IK|PCHAN_HAS_SPLINEIK|PCHAN_HAS_CONST);
}
CTX_DATA_END;
/* force depsgraph to get recalculated since relationships removed */
DAG_scene_sort(scene); /* sort order of objects */
/* do updates */
DAG_id_flush_update(&ob->id, OB_RECALC_DATA);
WM_event_add_notifier(C, NC_OBJECT|ND_CONSTRAINT, ob);
return OPERATOR_FINISHED;
}
void POSE_OT_constraints_clear(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Clear Constraints";
ot->idname= "POSE_OT_constraints_clear";
ot->description= "Clear all the constraints for the selected bones.";
/* callbacks */
ot->exec= pose_constraints_clear_exec;
ot->poll= ED_operator_posemode; // XXX - do we want to ensure there are selected bones too?
}
static int object_constraints_clear_exec(bContext *C, wmOperator *op)
{
Object *ob= CTX_data_active_object(C);
Scene *scene= CTX_data_scene(C);
/* do freeing */
// TODO: we should free constraints for all selected objects instead (to be more consistent with bones)
free_constraints(&ob->constraints);
/* force depsgraph to get recalculated since relationships removed */
DAG_scene_sort(scene); /* sort order of objects */
/* do updates */
DAG_id_flush_update(&ob->id, OB_RECALC_OB);
WM_event_add_notifier(C, NC_OBJECT|ND_CONSTRAINT, ob);
return OPERATOR_FINISHED;
}
void OBJECT_OT_constraints_clear(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Clear Constraints";
ot->idname= "OBJECT_OT_constraints_clear";
ot->description= "Clear all the constraints for the active Object only.";
/* callbacks */
ot->exec= object_constraints_clear_exec;
ot->poll= ED_operator_object_active;
}
/************************ add constraint operators *********************/
/* get the Object and/or PoseChannel to use as target */
static short get_new_constraint_target(bContext *C, int con_type, Object **tar_ob, bPoseChannel **tar_pchan, short add)
{
Object *obact= CTX_data_active_object(C);
bPoseChannel *pchanact= get_active_posechannel(obact);
short only_curve= 0, only_mesh= 0, only_ob= 0;
short found= 0;
/* clear tar_ob and tar_pchan fields before use
* - assume for now that both always exist...
*/
*tar_ob= NULL;
*tar_pchan= NULL;
/* check if constraint type doesn't requires a target
* - if so, no need to get any targets
*/
switch (con_type) {
/* no-target constraints --------------------------- */
/* null constraint - shouldn't even be added! */
case CONSTRAINT_TYPE_NULL:
/* limit constraints - no targets needed */
case CONSTRAINT_TYPE_LOCLIMIT:
case CONSTRAINT_TYPE_ROTLIMIT:
case CONSTRAINT_TYPE_SIZELIMIT:
return 0;
/* restricted target-type constraints -------------- */
/* NOTE: for these, we cannot try to add a target object if no valid ones are found, since that doesn't work */
/* curve-based constraints - set the only_curve and only_ob flags */
case CONSTRAINT_TYPE_CLAMPTO:
case CONSTRAINT_TYPE_FOLLOWPATH:
case CONSTRAINT_TYPE_SPLINEIK:
only_curve= 1;
only_ob= 1;
add= 0;
break;
/* mesh only? */
case CONSTRAINT_TYPE_SHRINKWRAP:
only_mesh= 1;
only_ob= 1;
add= 0;
break;
/* object only - add here is ok? */
case CONSTRAINT_TYPE_RIGIDBODYJOINT:
only_ob= 1;
break;
}
/* if the active Object is Armature, and we can search for bones, do so... */
if ((obact->type == OB_ARMATURE) && (only_ob == 0)) {
/* search in list of selected Pose-Channels for target */
CTX_DATA_BEGIN(C, bPoseChannel*, pchan, selected_pchans)
{
/* just use the first one that we encounter, as long as it is not the active one */
if (pchan != pchanact) {
*tar_ob= obact;
*tar_pchan= pchan;
found= 1;
break;
}
}
CTX_DATA_END;
}
/* if not yet found, try selected Objects... */
if (found == 0) {
/* search in selected objects context */
CTX_DATA_BEGIN(C, Object*, ob, selected_objects)
{
/* just use the first object we encounter (that isn't the active object)
* and which fulfills the criteria for the object-target that we've got
*/
if ( (ob != obact) &&
((!only_curve) || (ob->type == OB_CURVE)) &&
((!only_mesh) || (ob->type == OB_MESH)) )
{
/* set target */
*tar_ob= ob;
found= 1;
/* perform some special operations on the target */
if (only_curve) {
/* Curve-Path option must be enabled for follow-path constraints to be able to work */
Curve *cu= (Curve *)ob->data;
cu->flag |= CU_PATH;
}
break;
}
}
CTX_DATA_END;
}
/* if still not found, add a new empty to act as a target (if allowed) */
if ((found == 0) && (add)) {
Scene *scene= CTX_data_scene(C);
Base *base= BASACT, *newbase=NULL;
Object *obt;
/* add new target object */
obt= add_object(scene, OB_EMPTY);
/* set layers OK */
newbase= BASACT;
newbase->lay= base->lay;
obt->lay= newbase->lay;
/* transform cent to global coords for loc */
if (pchanact) {
/* since by default, IK targets the tip of the last bone, use the tip of the active PoseChannel
* if adding a target for an IK Constraint
*/
if (con_type == CONSTRAINT_TYPE_KINEMATIC)
mul_v3_m4v3(obt->loc, obact->obmat, pchanact->pose_tail);
else
mul_v3_m4v3(obt->loc, obact->obmat, pchanact->pose_head);
}
else
VECCOPY(obt->loc, obact->obmat[3]);
/* restore, add_object sets active */
BASACT= base;
base->flag |= SELECT;
/* make our new target the new object */
*tar_ob= obt;
found= 1;
}
/* return whether there's any target */
return found;
}
/* used by add constraint operators to add the constraint required */
static int constraint_add_exec(bContext *C, wmOperator *op, Object *ob, ListBase *list, int type, short setTarget)
{
Scene *scene= CTX_data_scene(C);
bPoseChannel *pchan;
bConstraint *con;
if(list == &ob->constraints)
pchan= NULL;
else
pchan= get_active_posechannel(ob);
/* check if constraint to be added is valid for the given constraints stack */
if (type == CONSTRAINT_TYPE_NULL) {
return OPERATOR_CANCELLED;
}
if ( (type == CONSTRAINT_TYPE_RIGIDBODYJOINT) && (list != &ob->constraints) ) {
BKE_report(op->reports, RPT_ERROR, "Rigid Body Joint Constraint can only be added to Objects.");
return OPERATOR_CANCELLED;
}
if ( (type == CONSTRAINT_TYPE_KINEMATIC) && ((!pchan) || (list != &pchan->constraints)) ) {
BKE_report(op->reports, RPT_ERROR, "IK Constraint can only be added to Bones.");
return OPERATOR_CANCELLED;
}
if ( (type == CONSTRAINT_TYPE_SPLINEIK) && ((!pchan) || (list != &pchan->constraints)) ) {
BKE_report(op->reports, RPT_ERROR, "Spline IK Constraint can only be added to Bones.");
return OPERATOR_CANCELLED;
}
/* create a new constraint of the type requried, and add it to the active/given constraints list */
if(pchan)
con = add_pose_constraint(ob, pchan, NULL, type);
else
con = add_ob_constraint(ob, NULL, type);
/* get the first selected object/bone, and make that the target
* - apart from the buttons-window add buttons, we shouldn't add in this way
*/
if (setTarget) {
Object *tar_ob= NULL;
bPoseChannel *tar_pchan= NULL;
/* get the target objects, adding them as need be */
if (get_new_constraint_target(C, type, &tar_ob, &tar_pchan, 1)) {
/* method of setting target depends on the type of target we've got
* - by default, just set the first target (distinction here is only for multiple-targetted constraints)
*/
if (tar_pchan)
set_constraint_nth_target(con, tar_ob, tar_pchan->name, 0);
else
set_constraint_nth_target(con, tar_ob, "", 0);
}
}
/* do type-specific tweaking to the constraint settings */
// TODO: does action constraint need anything here - i.e. spaceonce?
switch (type) {
case CONSTRAINT_TYPE_CHILDOF:
{
/* if this constraint is being added to a posechannel, make sure
* the constraint gets evaluated in pose-space */
if (ob->mode & OB_MODE_POSE) {
con->ownspace = CONSTRAINT_SPACE_POSE;
con->flag |= CONSTRAINT_SPACEONCE;
}
}
break;
case CONSTRAINT_TYPE_PYTHON: // FIXME: this code is not really valid anymore
{
char *menustr;
int scriptint= 0;
#ifndef DISABLE_PYTHON
/* popup a list of usable scripts */
menustr = buildmenu_pyconstraints(NULL, &scriptint);
// XXX scriptint = pupmenu(menustr);
MEM_freeN(menustr);
/* only add constraint if a script was chosen */
if (scriptint) {
/* add constraint */
validate_pyconstraint_cb(con->data, &scriptint);
/* make sure target allowance is set correctly */
BPY_pyconstraint_update(ob, con);
}
#endif
}
default:
break;
}
/* make sure all settings are valid - similar to above checks, but sometimes can be wrong */
object_test_constraints(ob);
if (ob->pose)
update_pose_constraint_flags(ob->pose);
/* force depsgraph to get recalculated since new relationships added */
DAG_scene_sort(scene); /* sort order of objects */
if ((ob->type==OB_ARMATURE) && (pchan)) {
ob->pose->flag |= POSE_RECALC; /* sort pose channels */
DAG_id_flush_update(&ob->id, OB_RECALC_DATA|OB_RECALC_OB);
}
else
DAG_id_flush_update(&ob->id, OB_RECALC_DATA);
/* notifiers for updates */
WM_event_add_notifier(C, NC_OBJECT|ND_CONSTRAINT|NA_ADDED, ob);
return OPERATOR_FINISHED;
}
/* ------------------ */
/* dummy operator callback */
static int object_constraint_add_exec(bContext *C, wmOperator *op)
{
ScrArea *sa= CTX_wm_area(C);
Object *ob;
int type= RNA_enum_get(op->ptr, "type");
short with_targets= 0;
/* get active object from context */
if (sa->spacetype == SPACE_BUTS)
ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
else
ob= CTX_data_active_object(C);
if (!ob) {
BKE_report(op->reports, RPT_ERROR, "No active object to add constraint to.");
return OPERATOR_CANCELLED;
}
/* hack: set constraint targets from selected objects in context is allowed when
* operator name included 'with_targets', since the menu doesn't allow multiple properties
*/
if (strstr(op->idname, "with_targets"))
with_targets= 1;
return constraint_add_exec(C, op, ob, &ob->constraints, type, with_targets);
}
/* dummy operator callback */
static int pose_constraint_add_exec(bContext *C, wmOperator *op)
{
ScrArea *sa= CTX_wm_area(C);
Object *ob;
int type= RNA_enum_get(op->ptr, "type");
short with_targets= 0;
/* get active object from context */
if (sa->spacetype == SPACE_BUTS)
ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
else
ob= CTX_data_active_object(C);
if (!ob) {
BKE_report(op->reports, RPT_ERROR, "No active object to add constraint to.");
return OPERATOR_CANCELLED;
}
/* hack: set constraint targets from selected objects in context is allowed when
* operator name included 'with_targets', since the menu doesn't allow multiple properties
*/
if (strstr(op->idname, "with_targets"))
with_targets= 1;
return constraint_add_exec(C, op, ob, get_active_constraints(ob), type, with_targets);
}
/* ------------------ */
void OBJECT_OT_constraint_add(wmOperatorType *ot)
{
/* identifiers */
ot->name= "Add Constraint";
ot->description = "Add a constraint to the active object.";
ot->idname= "OBJECT_OT_constraint_add";
/* api callbacks */
ot->invoke= WM_menu_invoke;
ot->exec= object_constraint_add_exec;
ot->poll= ED_operator_object_active;
/* flags */
ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
/* properties */
RNA_def_enum(ot->srna, "type", constraint_type_items, 0, "Type", "");
}
void OBJECT_OT_constraint_add_with_targets(wmOperatorType *ot)
{
/* identifiers */
ot->name= "Add Constraint (with Targets)";
ot->description = "Add a constraint to the active object, with target (where applicable) set to the selected Objects/Bones.";
ot->idname= "OBJECT_OT_constraint_add_with_targets";
/* api callbacks */
ot->invoke= WM_menu_invoke;
ot->exec= object_constraint_add_exec;
ot->poll= ED_operator_object_active;
/* flags */
ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
/* properties */
RNA_def_enum(ot->srna, "type", constraint_type_items, 0, "Type", "");
}
void POSE_OT_constraint_add(wmOperatorType *ot)
{
/* identifiers */
ot->name= "Add Constraint";
ot->description = "Add a constraint to the active bone.";
ot->idname= "POSE_OT_constraint_add";
/* api callbacks */
ot->invoke= WM_menu_invoke;
ot->exec= pose_constraint_add_exec;
ot->poll= ED_operator_posemode;
/* flags */
ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
/* properties */
RNA_def_enum(ot->srna, "type", constraint_type_items, 0, "Type", "");
}
void POSE_OT_constraint_add_with_targets(wmOperatorType *ot)
{
/* identifiers */
ot->name= "Add Constraint (with Targets)";
ot->description = "Add a constraint to the active bone, with target (where applicable) set to the selected Objects/Bones.";
ot->idname= "POSE_OT_constraint_add_with_targets";
/* api callbacks */
ot->invoke= WM_menu_invoke;
ot->exec= pose_constraint_add_exec;
ot->poll= ED_operator_posemode;
/* flags */
ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
/* properties */
RNA_def_enum(ot->srna, "type", constraint_type_items, 0, "Type", "");
}
/************************ IK Constraint operators *********************/
/* NOTE: only for Pose-Channels */
// TODO: should these be here, or back in editors/armature/poseobject.c again?
/* present menu with options + validation for targets to use */
static int pose_ik_add_invoke(bContext *C, wmOperator *op, wmEvent *evt)
{
Object *ob= CTX_data_active_object(C);
bPoseChannel *pchan= get_active_posechannel(ob);
bConstraint *con= NULL;
uiPopupMenu *pup;
uiLayout *layout;
Object *tar_ob= NULL;
bPoseChannel *tar_pchan= NULL;
/* must have active bone */
if (ELEM(NULL, ob, pchan)) {
BKE_report(op->reports, RPT_ERROR, "Must have active bone to add IK Constraint to.");
return OPERATOR_CANCELLED;
}
/* bone must not have any constraints already */
for (con= pchan->constraints.first; con; con= con->next) {
if (con->type==CONSTRAINT_TYPE_KINEMATIC) break;
}
if (con) {
BKE_report(op->reports, RPT_ERROR, "Bone already has IK Constraint.");
return OPERATOR_CANCELLED;
}
/* prepare popup menu to choose targetting options */
pup= uiPupMenuBegin(C, "Add IK", 0);
layout= uiPupMenuLayout(pup);
/* the type of targets we'll set determines the menu entries to show... */
if (get_new_constraint_target(C, CONSTRAINT_TYPE_KINEMATIC, &tar_ob, &tar_pchan, 0)) {
/* bone target, or object target?
* - the only thing that matters is that we want a target...
*/
if (tar_pchan)
uiItemBooleanO(layout, "To Active Bone", 0, "POSE_OT_ik_add", "with_targets", 1);
else
uiItemBooleanO(layout, "To Active Object", 0, "POSE_OT_ik_add", "with_targets", 1);
}
else {
/* we have a choice of adding to a new empty, or not setting any target (targetless IK) */
uiItemBooleanO(layout, "To New Empty Object", 0, "POSE_OT_ik_add", "with_targets", 1);
uiItemBooleanO(layout, "Without Targets", 0, "POSE_OT_ik_add", "with_targets", 0);
}
/* finish building the menu, and process it (should result in calling self again) */
uiPupMenuEnd(C, pup);
return OPERATOR_CANCELLED;
}
/* call constraint_add_exec() to add the IK constraint */
static int pose_ik_add_exec(bContext *C, wmOperator *op)
{
Object *ob= CTX_data_active_object(C);
int with_targets= RNA_boolean_get(op->ptr, "with_targets");
/* add the constraint - all necessary checks should have been done by the invoke() callback already... */
return constraint_add_exec(C, op, ob, get_active_constraints(ob), CONSTRAINT_TYPE_KINEMATIC, with_targets);
}
void POSE_OT_ik_add(wmOperatorType *ot)
{
/* identifiers */
ot->name= "Add IK to Bone";
ot->description= "Add IK Constraint to the active Bone.";
ot->idname= "POSE_OT_ik_add";
/* api callbacks */
ot->invoke= pose_ik_add_invoke;
ot->exec= pose_ik_add_exec;
ot->poll= ED_operator_posemode;
/* flags */
ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
/* properties */
RNA_def_boolean(ot->srna, "with_targets", 1, "With Targets", "Assign IK Constraint with targets derived from the select bones/objects");
}
/* ------------------ */
/* remove IK constraints from selected bones */
static int pose_ik_clear_exec(bContext *C, wmOperator *op)
{
Object *ob= CTX_data_active_object(C);
/* only remove IK Constraints */
CTX_DATA_BEGIN(C, bPoseChannel*, pchan, selected_pchans)
{
bConstraint *con, *next;
// TODO: should we be checking if these contraints were local before we try and remove them?
for (con= pchan->constraints.first; con; con= next) {
next= con->next;
if (con->type==CONSTRAINT_TYPE_KINEMATIC) {
remove_constraint(&pchan->constraints, con);
}
}
pchan->constflag &= ~(PCHAN_HAS_IK|PCHAN_HAS_TARGET);
}
CTX_DATA_END;
/* refresh depsgraph */
DAG_id_flush_update(&ob->id, OB_RECALC_DATA);
/* note, notifier might evolve */
WM_event_add_notifier(C, NC_OBJECT|ND_CONSTRAINT|NA_REMOVED, ob);
return OPERATOR_FINISHED;
}
void POSE_OT_ik_clear(wmOperatorType *ot)
{
/* identifiers */
ot->name= "Remove IK";
ot->description= "Remove all IK Constraints from selected bones.";
ot->idname= "POSE_OT_ik_clear";
/* api callbacks */
ot->exec= pose_ik_clear_exec;
ot->poll= ED_operator_posemode;
/* flags */
ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
}
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