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blender-archive/source/blender/editors/object/object_constraint.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.
*
* 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 *****
*/
/** \file blender/editors/object/object_constraint.c
* \ingroup edobj
*/
#include <stdio.h>
#include <string.h>
#include "MEM_guardedalloc.h"
#include "BLI_blenlib.h"
#include "BLI_math.h"
#include "BLI_dynstr.h"
#include "BLI_utildefines.h"
#include "BLF_translation.h"
#include "DNA_anim_types.h"
#include "DNA_constraint_types.h"
#include "DNA_curve_types.h"
#include "DNA_scene_types.h"
#include "DNA_text_types.h"
#include "DNA_object_types.h"
#include "BKE_action.h"
#include "BKE_armature.h"
#include "BKE_constraint.h"
#include "BKE_context.h"
#include "BKE_depsgraph.h"
#include "BKE_fcurve.h"
#include "BKE_global.h"
#include "BKE_main.h"
#include "BKE_object.h"
#include "BKE_report.h"
#include "BKE_tracking.h"
#include "BIK_api.h"
#ifdef WITH_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 "ED_object.h"
#include "ED_armature.h"
#include "ED_keyframing.h"
#include "ED_screen.h"
#include "UI_interface.h"
#include "UI_resources.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 = BKE_pose_channel_active(ob);
if (pchan)
return &pchan->constraints;
}
else
return &ob->constraints;
return NULL;
}
/* Find the list that a given constraint belongs to, and/or also get the posechannel this is from (if applicable) */
ListBase *get_constraint_lb(Object *ob, bConstraint *con, bPoseChannel **r_pchan)
{
if (r_pchan)
*r_pchan = NULL;
if (ELEM(NULL, ob, con))
return NULL;
/* try object constraints first */
if ((BLI_findindex(&ob->constraints, con) != -1)) {
return &ob->constraints;
}
/* if armature, try pose bones too */
if (ob->pose) {
bPoseChannel *pchan;
/* try each bone in order
* NOTE: it's not possible to directly look up the active bone yet, so this will have to do
*/
for (pchan = ob->pose->chanbase.first; pchan; pchan = pchan->next) {
if ((BLI_findindex(&pchan->constraints, con) != -1)) {
if (r_pchan)
*r_pchan = pchan;
return &pchan->constraints;
}
}
}
/* done */
return NULL;
}
/* single constraint */
bConstraint *get_active_constraint(Object *ob)
{
return BKE_constraints_active_get(get_active_constraints(ob));
}
/* -------------- Constraint Management (Add New, Remove, Rename) -------------------- */
#ifdef WITH_PYTHON
/* ------------- PyConstraints ------------------ */
/* this callback sets the text-file to be used for selected menu item */
static 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;
}
/* this returns a string for the list of usable pyconstraint script names */
static 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 /* WITH_PYTHON */
#if 0 // UNUSED, until pyconstraints are added back.
/* this callback gets called when the 'refresh' button of a pyconstraint gets pressed */
static void update_pyconstraint_cb(void *arg1, void *arg2)
{
#ifndef WITH_PYTHON
(void)arg1; /* unused */
(void)arg2; /* unused */
#else
Object *owner = (Object *)arg1;
bConstraint *con = (bConstraint *)arg2;
if (owner && con)
BPY_pyconstraint_update(owner, con);
#endif
}
#endif // UNUSED
/* helper function for add_constriant - sets the last target for the active constraint */
static void set_constraint_nth_target(bConstraint *con, Object *target, const char subtarget[], int index)
{
bConstraintTypeInfo *cti = BKE_constraint_typeinfo_get(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;
BLI_strncpy(ct->subtarget, subtarget, sizeof(ct->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, bPoseChannel *pchan)
{
bConstraint *curcon;
ListBase *conlist = NULL;
int type;
if (owner == NULL) return;
/* Check parents */
if (pchan) {
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:
conlist = &pchan->constraints;
break;
}
/* Check all constraints - is constraint valid? */
if (conlist) {
for (curcon = conlist->first; curcon; curcon = curcon->next) {
bConstraintTypeInfo *cti = BKE_constraint_typeinfo_get(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 (BKE_object_exists_check(data->tar) == 0) {
data->tar = NULL;
curcon->flag |= CONSTRAINT_DISABLE;
}
else if (data->tar == owner) {
if (!BKE_armature_find_bone_name(BKE_armature_from_object(owner), data->subtarget)) {
curcon->flag |= CONSTRAINT_DISABLE;
}
}
if (data->poletar) {
if (BKE_object_exists_check(data->poletar) == 0) {
data->poletar = NULL;
curcon->flag |= CONSTRAINT_DISABLE;
}
else if (data->poletar == owner) {
if (!BKE_armature_find_bone_name(BKE_armature_from_object(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_PIVOT) {
bPivotConstraint *data = curcon->data;
/* target doesn't have to exist, but if it is non-null, it must exist! */
if (data->tar && BKE_object_exists_check(data->tar) == 0) {
data->tar = NULL;
curcon->flag |= CONSTRAINT_DISABLE;
}
else if (data->tar == owner) {
if (!BKE_armature_find_bone_name(BKE_armature_from_object(owner), data->subtarget)) {
curcon->flag |= CONSTRAINT_DISABLE;
}
}
/* 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) {
/* must have action */
curcon->flag |= CONSTRAINT_DISABLE;
}
else if (data->act->idroot != ID_OB) {
/* only object-rooted actions can be used */
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;
}
}
else if (curcon->type == CONSTRAINT_TYPE_FOLLOWTRACK) {
bFollowTrackConstraint *data = curcon->data;
if ((data->flag & CAMERASOLVER_ACTIVECLIP) == 0) {
if (data->clip != NULL && data->track[0]) {
MovieTracking *tracking = &data->clip->tracking;
MovieTrackingObject *tracking_object;
if (data->object[0])
tracking_object = BKE_tracking_object_get_named(tracking, data->object);
else
tracking_object = BKE_tracking_object_get_camera(tracking);
if (!tracking_object) {
curcon->flag |= CONSTRAINT_DISABLE;
}
else {
if (!BKE_tracking_track_get_named(tracking, tracking_object, data->track))
curcon->flag |= CONSTRAINT_DISABLE;
}
}
else {
curcon->flag |= CONSTRAINT_DISABLE;
}
}
}
else if (curcon->type == CONSTRAINT_TYPE_CAMERASOLVER) {
bCameraSolverConstraint *data = curcon->data;
if ((data->flag & CAMERASOLVER_ACTIVECLIP) == 0 && (data->clip == NULL))
curcon->flag |= CONSTRAINT_DISABLE;
}
else if (curcon->type == CONSTRAINT_TYPE_OBJECTSOLVER) {
bObjectSolverConstraint *data = curcon->data;
if ((data->flag & CAMERASOLVER_ACTIVECLIP) == 0 && (data->clip == NULL))
curcon->flag |= CONSTRAINT_DISABLE;
}
/* 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 (BKE_object_exists_check(ct->tar) == 0) {
/* object doesn't exist, but constraint requires target */
ct->tar = NULL;
curcon->flag |= CONSTRAINT_DISABLE;
}
else if (ct->tar == owner) {
if (type == CONSTRAINT_OBTYPE_BONE) {
if (!BKE_armature_find_bone_name(BKE_armature_from_object(owner), ct->subtarget)) {
/* bone must exist in armature... */
/* TODO: clear subtarget? */
curcon->flag |= CONSTRAINT_DISABLE;
}
else if (strcmp(pchan->name, ct->subtarget) == 0) {
/* cannot target self */
ct->subtarget[0] = '\0';
curcon->flag |= CONSTRAINT_DISABLE;
}
}
else {
/* cannot use self as target */
ct->tar = NULL;
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);
}
}
}
}
void object_test_constraints(Object *owner)
{
if (owner->constraints.first)
test_constraints(owner, NULL);
if (owner->type == OB_ARMATURE && owner->pose) {
bPoseChannel *pchan;
for (pchan = owner->pose->chanbase.first; pchan; pchan = pchan->next) {
if (pchan->constraints.first)
test_constraints(owner, pchan);
}
}
}
/************************ generic functions for operators using constraint names and data context *********************/
#define EDIT_CONSTRAINT_OWNER_OBJECT 0
#define EDIT_CONSTRAINT_OWNER_BONE 1
static EnumPropertyItem constraint_owner_items[] = {
{EDIT_CONSTRAINT_OWNER_OBJECT, "OBJECT", 0, "Object", "Edit a constraint on the active object"},
{EDIT_CONSTRAINT_OWNER_BONE, "BONE", 0, "Bone", "Edit a constraint on the active bone"},
{0, NULL, 0, NULL, NULL}};
static int edit_constraint_poll_generic(bContext *C, StructRNA *rna_type)
{
PointerRNA ptr = CTX_data_pointer_get_type(C, "constraint", rna_type);
Object *ob = (ptr.id.data) ? ptr.id.data : ED_object_active_context(C);
if (!ptr.data || !ob || ob->id.lib) return 0;
if (ptr.id.data && ((ID *)ptr.id.data)->lib) return 0;
return 1;
}
static int edit_constraint_poll(bContext *C)
{
return edit_constraint_poll_generic(C, &RNA_Constraint);
}
static void edit_constraint_properties(wmOperatorType *ot)
{
RNA_def_string(ot->srna, "constraint", NULL, MAX_NAME, "Constraint", "Name of the constraint to edit");
RNA_def_enum(ot->srna, "owner", constraint_owner_items, 0, "Owner", "The owner of this constraint");
}
static int edit_constraint_invoke_properties(bContext *C, wmOperator *op)
{
PointerRNA ptr = CTX_data_pointer_get_type(C, "constraint", &RNA_Constraint);
Object *ob = (ptr.id.data) ? ptr.id.data : ED_object_active_context(C);
bConstraint *con;
ListBase *list;
if (RNA_struct_property_is_set(op->ptr, "constraint") && RNA_struct_property_is_set(op->ptr, "owner"))
return 1;
if (ptr.data) {
con = ptr.data;
RNA_string_set(op->ptr, "constraint", con->name);
list = get_constraint_lb(ob, con, NULL);
if (&ob->constraints == list)
RNA_enum_set(op->ptr, "owner", EDIT_CONSTRAINT_OWNER_OBJECT);
else
RNA_enum_set(op->ptr, "owner", EDIT_CONSTRAINT_OWNER_BONE);
return 1;
}
return 0;
}
static bConstraint *edit_constraint_property_get(wmOperator *op, Object *ob, int type)
{
char constraint_name[MAX_NAME];
int owner = RNA_enum_get(op->ptr, "owner");
bConstraint *con;
ListBase *list = NULL;
RNA_string_get(op->ptr, "constraint", constraint_name);
if (owner == EDIT_CONSTRAINT_OWNER_OBJECT) {
list = &ob->constraints;
}
else if (owner == EDIT_CONSTRAINT_OWNER_BONE) {
bPoseChannel *pchan = BKE_pose_channel_active(ob);
if (pchan)
list = &pchan->constraints;
else {
//if (G.debug & G_DEBUG)
//printf("edit_constraint_property_get: No active bone for object '%s'\n", (ob) ? ob->id.name + 2 : "<None>");
return NULL;
}
}
else {
//if (G.debug & G_DEBUG)
//printf("edit_constraint_property_get: defaulting to getting list in the standard way\n");
list = get_active_constraints(ob);
}
con = BKE_constraints_find_name(list, constraint_name);
//if (G.debug & G_DEBUG)
//printf("constraint found = %p, %s\n", (void *)con, (con) ? con->name : "<Not found>");
if (con && (type != 0) && (con->type != type))
con = NULL;
return con;
}
/* ********************** CONSTRAINT-SPECIFIC STUFF ********************* */
/* ---------- Distance-Dependent Constraints ---------- */
/* StretchTo, Limit Distance */
static int stretchto_reset_exec(bContext *C, wmOperator *op)
{
Object *ob = ED_object_active_context(C);
bConstraint *con = edit_constraint_property_get(op, ob, CONSTRAINT_TYPE_STRETCHTO);
bStretchToConstraint *data = (con) ? (bStretchToConstraint *)con->data : NULL;
/* despite 3 layers of checks, we may still not be able to find a constraint */
if (data == NULL)
return OPERATOR_CANCELLED;
/* just set original length to 0.0, which will cause a reset on next recalc */
data->orglength = 0.0f;
ED_object_constraint_update(ob);
WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT, NULL);
return OPERATOR_FINISHED;
}
static int stretchto_reset_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{
if (edit_constraint_invoke_properties(C, op))
return stretchto_reset_exec(C, op);
else
return OPERATOR_CANCELLED;
}
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";
/* callbacks */
ot->invoke = stretchto_reset_invoke;
ot->exec = stretchto_reset_exec;
ot->poll = edit_constraint_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* properties */
edit_constraint_properties(ot);
}
static int limitdistance_reset_exec(bContext *C, wmOperator *op)
{
Object *ob = ED_object_active_context(C);
bConstraint *con = edit_constraint_property_get(op, ob, CONSTRAINT_TYPE_DISTLIMIT);
bDistLimitConstraint *data = (con) ? (bDistLimitConstraint *)con->data : NULL;
/* despite 3 layers of checks, we may still not be able to find a constraint */
if (data == NULL)
return OPERATOR_CANCELLED;
/* just set original length to 0.0, which will cause a reset on next recalc */
data->dist = 0.0f;
ED_object_constraint_update(ob);
WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT, NULL);
return OPERATOR_FINISHED;
}
static int limitdistance_reset_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{
if (edit_constraint_invoke_properties(C, op))
return limitdistance_reset_exec(C, op);
else
return OPERATOR_CANCELLED;
}
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";
/* callbacks */
ot->invoke = limitdistance_reset_invoke;
ot->exec = limitdistance_reset_exec;
ot->poll = edit_constraint_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* properties */
edit_constraint_properties(ot);
}
/* ------------- Child-Of Constraint ------------------ */
static void child_get_inverse_matrix(Scene *scene, Object *ob, bConstraint *con, float invmat[4][4], const int owner)
{
/* nullify inverse matrix first */
unit_m4(invmat);
if (owner == EDIT_CONSTRAINT_OWNER_BONE) {
bPoseChannel *pchan;
/* try to find a pose channel - assume that this is the constraint owner */
/* TODO: get from context instead? */
if (ob && ob->pose && (pchan = BKE_pose_channel_active(ob))) {
bConstraint *con_last;
/* calculate/set inverse matrix:
* We just calculate all transform-stack eval up to but not including this constraint.
* This is because inverse should just inverse correct for just the constraint's influence
* when it gets applied; that is, at the time of application, we don't know anything about
* what follows.
*/
float imat[4][4], tmat[4][4];
float pmat[4][4];
/* make sure we passed the correct constraint */
BLI_assert(BLI_findindex(&pchan->constraints, con) != -1);
/* 1. calculate posemat where inverse doesn't exist yet (inverse was cleared above),
* to use as baseline ("pmat") to derive delta from. This extra calc saves users
* from having pressing "Clear Inverse" first
*/
BKE_pose_where_is(scene, ob);
copy_m4_m4(pmat, pchan->pose_mat);
/* 2. knock out constraints starting from this one */
con_last = pchan->constraints.last;
pchan->constraints.last = con->prev;
if (con->prev) {
/* new end must not point to this one, else this chain cutting is useless */
con->prev->next = NULL;
}
else {
/* constraint was first */
pchan->constraints.first = NULL;
}
/* 3. solve pose without disabled constraints */
BKE_pose_where_is(scene, ob);
/* 4. 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, pmat, imat);
invert_m4_m4(invmat, tmat);
/* 5. restore constraints */
pchan->constraints.last = con_last;
if (con->prev) {
/* hook up prev to this one again */
con->prev->next = con;
}
else {
/* set as first again */
pchan->constraints.first = con;
}
/* 6. recalculate pose with new inv-mat applied */
BKE_pose_where_is(scene, ob);
}
}
if (owner == EDIT_CONSTRAINT_OWNER_OBJECT) {
if (ob) {
Object workob;
/* make sure we passed the correct constraint */
BLI_assert(BLI_findindex(&ob->constraints, con) != -1);
/* use BKE_object_workob_calc_parent to find inverse - just like for normal parenting */
BKE_object_workob_calc_parent(scene, ob, &workob);
invert_m4_m4(invmat, workob.obmat);
}
}
}
/* ChildOf Constraint - set inverse callback */
static int childof_set_inverse_exec(bContext *C, wmOperator *op)
{
Scene *scene = CTX_data_scene(C);
Object *ob = ED_object_active_context(C);
bConstraint *con = edit_constraint_property_get(op, ob, CONSTRAINT_TYPE_CHILDOF);
bChildOfConstraint *data = (con) ? (bChildOfConstraint *)con->data : NULL;
const int owner = RNA_enum_get(op->ptr, "owner");
/* despite 3 layers of checks, we may still not be able to find a constraint */
if (data == NULL) {
printf("DEBUG: Child-Of Set Inverse - object = '%s'\n", (ob) ? ob->id.name + 2 : "<None>");
BKE_report(op->reports, RPT_ERROR, "Could not find constraint data for Child-Of Set Inverse");
return OPERATOR_CANCELLED;
}
child_get_inverse_matrix(scene, ob, con, data->invmat, owner);
WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT, ob);
return OPERATOR_FINISHED;
}
static int childof_set_inverse_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{
if (edit_constraint_invoke_properties(C, op))
return childof_set_inverse_exec(C, op);
else
return OPERATOR_CANCELLED;
}
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";
/* callbacks */
ot->invoke = childof_set_inverse_invoke;
ot->exec = childof_set_inverse_exec;
ot->poll = edit_constraint_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* properties */
edit_constraint_properties(ot);
}
/* ChildOf Constraint - clear inverse callback */
static int childof_clear_inverse_exec(bContext *C, wmOperator *op)
{
Object *ob = ED_object_active_context(C);
bConstraint *con = edit_constraint_property_get(op, ob, CONSTRAINT_TYPE_CHILDOF);
bChildOfConstraint *data = (con) ? (bChildOfConstraint *)con->data : NULL;
if (data == NULL) {
BKE_report(op->reports, RPT_ERROR, "Child Of constraint not found");
return OPERATOR_CANCELLED;
}
/* simply clear the matrix */
unit_m4(data->invmat);
WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT, ob);
return OPERATOR_FINISHED;
}
static int childof_clear_inverse_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{
if (edit_constraint_invoke_properties(C, op))
return childof_clear_inverse_exec(C, op);
else
return OPERATOR_CANCELLED;
}
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";
/* callbacks */
ot->invoke = childof_clear_inverse_invoke;
ot->exec = childof_clear_inverse_exec;
ot->poll = edit_constraint_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* properties */
edit_constraint_properties(ot);
}
/* --------------- Follow Path Constraint ------------------ */
static int followpath_path_animate_exec(bContext *C, wmOperator *op)
{
Object *ob = ED_object_active_context(C);
bConstraint *con = edit_constraint_property_get(op, ob, CONSTRAINT_TYPE_FOLLOWPATH);
bFollowPathConstraint *data = (con) ? (bFollowPathConstraint *)con->data : NULL;
bAction *act = NULL;
FCurve *fcu = NULL;
int sfra = RNA_int_get(op->ptr, "frame_start");
int len = RNA_int_get(op->ptr, "length");
float standardRange = 1.0;
/* nearly impossible sanity check */
if (data == NULL) {
BKE_report(op->reports, RPT_ERROR, "Follow Path constraint not found");
return OPERATOR_CANCELLED;
}
/* add F-Curve as appropriate */
if (data->tar) {
Curve *cu = (Curve *)data->tar->data;
if (ELEM(NULL, cu->adt, cu->adt->action) ||
(list_find_fcurve(&cu->adt->action->curves, "eval_time", 0) == NULL))
{
/* create F-Curve for path animation */
act = verify_adt_action(&cu->id, 1);
fcu = verify_fcurve(act, NULL, NULL, "eval_time", 0, 1);
/* standard vertical range - 1:1 = 100 frames */
standardRange = 100.0f;
}
else {
/* path anim exists already - abort for now as this may well be what was intended */
BKE_report(op->reports, RPT_WARNING, "Path is already animated");
return OPERATOR_CANCELLED;
}
}
else {
/* animate constraint's "fixed offset" */
PointerRNA ptr;
PropertyRNA *prop;
char *path;
/* get RNA pointer to constraint's "offset_factor" property - to build RNA path */
RNA_pointer_create(&ob->id, &RNA_FollowPathConstraint, con, &ptr);
prop = RNA_struct_find_property(&ptr, "offset_factor");
path = RNA_path_from_ID_to_property(&ptr, prop);
/* create F-Curve for constraint */
act = verify_adt_action(&ob->id, 1);
fcu = verify_fcurve(act, NULL, NULL, path, 0, 1);
/* standard vertical range - 0.0 to 1.0 */
standardRange = 1.0f;
/* enable "Use Fixed Position" so that animating this has effect */
data->followflag |= FOLLOWPATH_STATIC;
/* path needs to be freed */
if (path)
MEM_freeN(path);
}
/* setup dummy 'generator' modifier here to get 1-1 correspondence still working
* and define basic slope of this curve based on the properties
*/
if (!fcu->bezt && !fcu->fpt && !fcu->modifiers.first) {
FModifier *fcm = add_fmodifier(&fcu->modifiers, FMODIFIER_TYPE_GENERATOR);
FMod_Generator *gen = fcm->data;
/* Assume that we have the following equation:
* y = Ax + B
* 1 0 <-- coefficients array indices
*/
float A = standardRange / (float)(len);
float B = (float)(-sfra) * A;
gen->coefficients[1] = A;
gen->coefficients[0] = B;
}
/* updates... */
WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT, ob);
return OPERATOR_FINISHED;
}
static int followpath_path_animate_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{
/* hook up invoke properties for figuring out which constraint we're dealing with */
if (edit_constraint_invoke_properties(C, op)) {
return followpath_path_animate_exec(C, op);
}
else {
return OPERATOR_CANCELLED;
}
}
void CONSTRAINT_OT_followpath_path_animate(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Auto Animate Path";
ot->idname = "CONSTRAINT_OT_followpath_path_animate";
ot->description = "Add default animation for path used by constraint if it isn't animated already";
/* callbacks */
ot->invoke = followpath_path_animate_invoke;
ot->exec = followpath_path_animate_exec;
ot->poll = edit_constraint_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* props */
edit_constraint_properties(ot);
RNA_def_int(ot->srna, "frame_start", 1, MINAFRAME, MAXFRAME, "Start Frame",
"First frame of path animation", MINAFRAME, MAXFRAME);
RNA_def_int(ot->srna, "length", 100, 0, MAXFRAME, "Length",
"Number of frames that path animation should take", 0, MAXFRAME);
}
/* ------------- Object Solver Constraint ------------------ */
static int objectsolver_set_inverse_exec(bContext *C, wmOperator *op)
{
Scene *scene = CTX_data_scene(C);
Object *ob = ED_object_active_context(C);
bConstraint *con = edit_constraint_property_get(op, ob, CONSTRAINT_TYPE_OBJECTSOLVER);
bObjectSolverConstraint *data = (con) ? (bObjectSolverConstraint *)con->data : NULL;
const int owner = RNA_enum_get(op->ptr, "owner");
/* despite 3 layers of checks, we may still not be able to find a constraint */
if (data == NULL) {
printf("DEBUG: Child-Of Set Inverse - object = '%s'\n", (ob) ? ob->id.name + 2 : "<None>");
BKE_report(op->reports, RPT_ERROR, "Could not find constraint data for Child-Of Set Inverse");
return OPERATOR_CANCELLED;
}
child_get_inverse_matrix(scene, ob, con, data->invmat, owner);
WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT, ob);
return OPERATOR_FINISHED;
}
static int objectsolver_set_inverse_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{
if (edit_constraint_invoke_properties(C, op))
return objectsolver_set_inverse_exec(C, op);
else
return OPERATOR_CANCELLED;
}
void CONSTRAINT_OT_objectsolver_set_inverse(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Set Inverse";
ot->idname = "CONSTRAINT_OT_objectsolver_set_inverse";
ot->description = "Set inverse correction for ObjectSolver constraint";
/* callbacks */
ot->invoke = objectsolver_set_inverse_invoke;
ot->exec = objectsolver_set_inverse_exec;
ot->poll = edit_constraint_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* properties */
edit_constraint_properties(ot);
}
static int objectsolver_clear_inverse_exec(bContext *C, wmOperator *op)
{
Object *ob = ED_object_active_context(C);
bConstraint *con = edit_constraint_property_get(op, ob, CONSTRAINT_TYPE_OBJECTSOLVER);
bObjectSolverConstraint *data = (con) ? (bObjectSolverConstraint *)con->data : NULL;
if (data == NULL) {
BKE_report(op->reports, RPT_ERROR, "Child Of constraint not found");
return OPERATOR_CANCELLED;
}
/* simply clear the matrix */
unit_m4(data->invmat);
WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT, ob);
return OPERATOR_FINISHED;
}
static int objectsolver_clear_inverse_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{
if (edit_constraint_invoke_properties(C, op))
return objectsolver_clear_inverse_exec(C, op);
else
return OPERATOR_CANCELLED;
}
void CONSTRAINT_OT_objectsolver_clear_inverse(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Clear Inverse";
ot->idname = "CONSTRAINT_OT_objectsolver_clear_inverse";
ot->description = "Clear inverse correction for ObjectSolver constraint";
/* callbacks */
ot->invoke = objectsolver_clear_inverse_invoke;
ot->exec = objectsolver_clear_inverse_exec;
ot->poll = edit_constraint_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* properties */
edit_constraint_properties(ot);
}
/***************************** BUTTONS ****************************/
void ED_object_constraint_set_active(Object *ob, bConstraint *con)
{
ListBase *lb = get_constraint_lb(ob, con, NULL);
/* lets be nice and escape if its active already */
/* NOTE: this assumes that the stack doesn't have other active ones set... */
if ((lb && con) && (con->flag & CONSTRAINT_ACTIVE))
return;
BKE_constraints_active_set(lb, con);
}
void ED_object_constraint_update(Object *ob)
{
if (ob->pose) BKE_pose_update_constraint_flags(ob->pose);
object_test_constraints(ob);
if (ob->type == OB_ARMATURE)
DAG_id_tag_update(&ob->id, OB_RECALC_DATA | OB_RECALC_OB);
else
DAG_id_tag_update(&ob->id, OB_RECALC_OB);
}
void ED_object_constraint_dependency_update(Main *bmain, Object *ob)
{
ED_object_constraint_update(ob);
if (ob->pose) ob->pose->flag |= POSE_RECALC; // checks & sorts pose channels
DAG_relations_tag_update(bmain);
}
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 *UNUSED(op))
{
PointerRNA ptr = CTX_data_pointer_get_type(C, "constraint", &RNA_Constraint);
Object *ob = ptr.id.data;
bConstraint *con = ptr.data;
ListBase *lb = get_constraint_lb(ob, con, NULL);
const bool is_ik = ELEM(con->type, CONSTRAINT_TYPE_KINEMATIC, CONSTRAINT_TYPE_SPLINEIK);
/* free the constraint */
if (BKE_constraint_remove(lb, con)) {
/* there's no active constraint now, so make sure this is the case */
BKE_constraints_active_set(lb, NULL);
ED_object_constraint_update(ob); /* needed to set the flags on posebones correctly */
/* ITASC needs to be rebuilt once a constraint is removed [#26920] */
if (is_ik) {
BIK_clear_data(ob->pose);
}
/* notifiers */
WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT | NA_REMOVED, ob);
return OPERATOR_FINISHED;
}
else {
/* couldn't remove due to some invalid data */
return OPERATOR_CANCELLED;
}
}
void CONSTRAINT_OT_delete(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Delete Constraint";
ot->idname = "CONSTRAINT_OT_delete";
ot->description = "Remove constraint 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)
{
Object *ob = ED_object_active_context(C);
bConstraint *con = edit_constraint_property_get(op, ob, 0);
if (con && con->next) {
ListBase *conlist = get_constraint_lb(ob, con, NULL);
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;
}
static int constraint_move_down_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{
if (edit_constraint_invoke_properties(C, op))
return constraint_move_down_exec(C, op);
else
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 in constraint stack";
/* callbacks */
ot->invoke = constraint_move_down_invoke;
ot->exec = constraint_move_down_exec;
ot->poll = edit_constraint_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* properties */
edit_constraint_properties(ot);
}
static int constraint_move_up_exec(bContext *C, wmOperator *op)
{
Object *ob = ED_object_active_context(C);
bConstraint *con = edit_constraint_property_get(op, ob, 0);
if (con && con->prev) {
ListBase *conlist = get_constraint_lb(ob, con, NULL);
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;
}
static int constraint_move_up_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{
if (edit_constraint_invoke_properties(C, op))
return constraint_move_up_exec(C, op);
else
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 in constraint stack";
/* callbacks */
ot->exec = constraint_move_up_exec;
ot->invoke = constraint_move_up_invoke;
ot->poll = edit_constraint_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
edit_constraint_properties(ot);
}
/***************************** OPERATORS ****************************/
/************************ remove constraint operators *********************/
static int pose_constraints_clear_exec(bContext *C, wmOperator *UNUSED(op))
{
Main *bmain = CTX_data_main(C);
Object *ob = BKE_object_pose_armature_get(CTX_data_active_object(C));
/* free constraints for all selected bones */
CTX_DATA_BEGIN (C, bPoseChannel *, pchan, selected_pose_bones)
{
BKE_constraints_free(&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_relations_tag_update(bmain);
/* note, calling BIK_clear_data() isn't needed here */
/* do updates */
DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT | NA_REMOVED, ob);
return OPERATOR_FINISHED;
}
void POSE_OT_constraints_clear(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Clear Pose 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_exclusive; // XXX - do we want to ensure there are selected bones too?
}
static int object_constraints_clear_exec(bContext *C, wmOperator *UNUSED(op))
{
Main *bmain = CTX_data_main(C);
/* do freeing */
CTX_DATA_BEGIN (C, Object *, ob, selected_editable_objects)
{
BKE_constraints_free(&ob->constraints);
DAG_id_tag_update(&ob->id, OB_RECALC_OB);
}
CTX_DATA_END;
/* force depsgraph to get recalculated since relationships removed */
DAG_relations_tag_update(bmain);
/* do updates */
WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT | NA_REMOVED, NULL);
return OPERATOR_FINISHED;
}
void OBJECT_OT_constraints_clear(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Clear Object 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_editable;
}
/************************ copy all constraints operators *********************/
static int pose_constraint_copy_exec(bContext *C, wmOperator *op)
{
Main *bmain = CTX_data_main(C);
bPoseChannel *pchan = CTX_data_active_pose_bone(C);
/* don't do anything if bone doesn't exist or doesn't have any constraints */
if (ELEM(NULL, pchan, pchan->constraints.first)) {
BKE_report(op->reports, RPT_ERROR, "No active bone with constraints for copying");
return OPERATOR_CANCELLED;
}
/* copy all constraints from active posebone to all selected posebones */
CTX_DATA_BEGIN (C, bPoseChannel *, chan, selected_pose_bones)
{
/* if we're not handling the object we're copying from, copy all constraints over */
if (pchan != chan) {
BKE_constraints_copy(&chan->constraints, &pchan->constraints, true);
/* update flags (need to add here, not just copy) */
chan->constflag |= pchan->constflag;
}
}
CTX_DATA_END;
/* force depsgraph to get recalculated since new relationships added */
DAG_relations_tag_update(bmain);
WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT, NULL);
return OPERATOR_FINISHED;
}
void POSE_OT_constraints_copy(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Copy Constraints to Selected Bones";
ot->idname = "POSE_OT_constraints_copy";
ot->description = "Copy constraints to other selected bones";
/* api callbacks */
ot->exec = pose_constraint_copy_exec;
ot->poll = ED_operator_posemode_exclusive;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
static int object_constraint_copy_exec(bContext *C, wmOperator *UNUSED(op))
{
Main *bmain = CTX_data_main(C);
Object *obact = ED_object_active_context(C);
/* copy all constraints from active object to all selected objects */
CTX_DATA_BEGIN (C, Object *, ob, selected_editable_objects)
{
/* if we're not handling the object we're copying from, copy all constraints over */
if (obact != ob) {
BKE_constraints_copy(&ob->constraints, &obact->constraints, true);
DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
}
}
CTX_DATA_END;
/* force depsgraph to get recalculated since new relationships added */
DAG_relations_tag_update(bmain);
/* notifiers for updates */
WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT | NA_ADDED, NULL);
return OPERATOR_FINISHED;
}
void OBJECT_OT_constraints_copy(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Copy Constraints to Selected Objects";
ot->idname = "OBJECT_OT_constraints_copy";
ot->description = "Copy constraints to other selected objects";
/* api callbacks */
ot->exec = object_constraint_copy_exec;
ot->poll = ED_operator_object_active_editable;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
/************************ 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 = ED_object_active_context(C);
bPoseChannel *pchanact = BKE_pose_channel_active(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:
case CONSTRAINT_TYPE_SAMEVOL:
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_pose_bones)
{
/* 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)) {
Main *bmain = CTX_data_main(C);
Scene *scene = CTX_data_scene(C);
Base *base = BASACT, *newbase = NULL;
Object *obt;
/* add new target object */
obt = BKE_object_add(bmain, 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 {
copy_v3_v3(obt->loc, obact->obmat[3]);
}
/* restore, BKE_object_add 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, const bool setTarget)
{
Main *bmain = CTX_data_main(C);
bPoseChannel *pchan;
bConstraint *con;
if (list == &ob->constraints) {
pchan = NULL;
}
else {
pchan = BKE_pose_channel_active(ob);
/* ensure not to confuse object/pose adding */
if (pchan == NULL) {
BKE_report(op->reports, RPT_ERROR, "No active pose bone to add a constraint to");
return OPERATOR_CANCELLED;
}
}
/* 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 = BKE_constraint_add_for_pose(ob, pchan, NULL, type);
else
con = BKE_constraint_add_for_object(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-targeted 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 */
switch (type) {
case CONSTRAINT_TYPE_PYTHON: /* FIXME: this code is not really valid anymore */
{
#ifdef WITH_PYTHON
char *menustr;
int scriptint = 0;
/* 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
break;
}
default:
break;
}
/* make sure all settings are valid - similar to above checks, but sometimes can be wrong */
object_test_constraints(ob);
if (pchan)
BKE_pose_update_constraint_flags(ob->pose);
/* force depsgraph to get recalculated since new relationships added */
DAG_relations_tag_update(bmain);
if ((ob->type == OB_ARMATURE) && (pchan)) {
ob->pose->flag |= POSE_RECALC; /* sort pose channels */
DAG_id_tag_update(&ob->id, OB_RECALC_DATA | OB_RECALC_OB);
}
else
DAG_id_tag_update(&ob->id, OB_RECALC_OB);
/* 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)
{
Object *ob = ED_object_active_context(C);
int type = RNA_enum_get(op->ptr, "type");
short with_targets = 0;
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)
{
Object *ob = BKE_object_pose_armature_get(ED_object_active_context(C));
int type = RNA_enum_get(op->ptr, "type");
short with_targets = 0;
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_editable;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* properties */
ot->prop = 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_editable;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* properties */
ot->prop = 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_exclusive;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* properties */
ot->prop = 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_exclusive;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
/* properties */
ot->prop = 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, const wmEvent *UNUSED(event))
{
Object *ob = BKE_object_pose_armature_get(CTX_data_active_object(C));
bPoseChannel *pchan = BKE_pose_channel_active(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 an 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 an IK constraint");
return OPERATOR_CANCELLED;
}
/* prepare popup menu to choose targetting options */
pup = uiPupMenuBegin(C, IFACE_("Add IK"), ICON_NONE);
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, IFACE_("To Active Bone"), ICON_NONE, "POSE_OT_ik_add", "with_targets", 1);
else
uiItemBooleanO(layout, IFACE_("To Active Object"), ICON_NONE, "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, IFACE_("To New Empty Object"), ICON_NONE, "POSE_OT_ik_add", "with_targets", 1);
uiItemBooleanO(layout, IFACE_("Without Targets"), ICON_NONE, "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);
const bool 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_exclusive;
/* 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 *UNUSED(op))
{
Object *ob = BKE_object_pose_armature_get(CTX_data_active_object(C));
/* only remove IK Constraints */
CTX_DATA_BEGIN (C, bPoseChannel *, pchan, selected_pose_bones)
{
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) {
BKE_constraint_remove(&pchan->constraints, con);
}
}
pchan->constflag &= ~(PCHAN_HAS_IK | PCHAN_HAS_TARGET);
}
CTX_DATA_END;
/* refresh depsgraph */
DAG_id_tag_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_exclusive;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
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