e5119ee2c0
* Transition tracks are now drawn in a different colour (bluish) * Action line now shows keyframe indicators for the action it is representing. These are drawn as small empty diamonds to show that they're not directly editable (and never ever will be) via the NLA Editor. * Action line is also drawn with borders to help differentiate it from the other tracks. * As an experiment, removed the 'TweakMode' buttons from the header. I had originally added this as a way of indicating that this functionality was there (and to allow for keeping track of it), though it seems to have caused far too much confusion and frustration about 'modality' instead.
881 lines
24 KiB
C
881 lines
24 KiB
C
/**
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* $Id$
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*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): Joshua Leung (full recode)
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#include <stdlib.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <math.h>
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#include <float.h>
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#include "MEM_guardedalloc.h"
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#include "BLI_blenlib.h"
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#include "DNA_anim_types.h"
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#include "DNA_action_types.h"
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#include "BKE_animsys.h"
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#include "BKE_action.h"
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#include "BKE_fcurve.h"
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#include "BKE_nla.h"
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#include "BKE_blender.h"
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#include "BKE_library.h"
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#include "BKE_object.h"
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#include "BKE_utildefines.h"
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#include "RNA_access.h"
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#include "nla_private.h"
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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/* *************************************************** */
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/* Data Management */
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/* Freeing ------------------------------------------- */
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/* Remove the given NLA strip from the NLA track it occupies, free the strip's data,
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* and the strip itself.
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*/
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// TODO: with things like transitions, should these get freed too? Maybe better as a UI tool
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void free_nlastrip (ListBase *strips, NlaStrip *strip)
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{
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FModifier *fcm, *fmn;
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/* sanity checks */
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if (strip == NULL)
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return;
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/* remove reference to action */
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if (strip->act)
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strip->act->id.us--;
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/* free remapping info */
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//if (strip->remap)
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// BKE_animremap_free();
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/* free own F-Curves */
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free_fcurves(&strip->fcurves);
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/* free F-Modifiers */
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for (fcm= strip->modifiers.first; fcm; fcm= fmn) {
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fmn= fcm->next;
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BLI_remlink(&strip->modifiers, fcm);
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fcurve_remove_modifier(NULL, fcm);
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}
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/* free the strip itself */
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if (strips)
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BLI_freelinkN(strips, strip);
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else
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MEM_freeN(strip);
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}
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/* Remove the given NLA track from the set of NLA tracks, free the track's data,
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* and the track itself.
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*/
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void free_nlatrack (ListBase *tracks, NlaTrack *nlt)
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{
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NlaStrip *strip, *stripn;
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/* sanity checks */
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if (nlt == NULL)
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return;
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/* free strips */
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for (strip= nlt->strips.first; strip; strip= stripn) {
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stripn= strip->next;
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free_nlastrip(&nlt->strips, strip);
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}
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/* free NLA track itself now */
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if (tracks)
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BLI_freelinkN(tracks, nlt);
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else
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MEM_freeN(nlt);
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}
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/* Free the elements of type NLA Tracks provided in the given list, but do not free
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* the list itself since that is not free-standing
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*/
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void free_nladata (ListBase *tracks)
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{
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NlaTrack *nlt, *nltn;
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/* sanity checks */
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if ELEM(NULL, tracks, tracks->first)
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return;
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/* free tracks one by one */
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for (nlt= tracks->first; nlt; nlt= nltn) {
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nltn= nlt->next;
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free_nlatrack(tracks, nlt);
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}
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/* clear the list's pointers to be safe */
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tracks->first= tracks->last= NULL;
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}
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/* Copying ------------------------------------------- */
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/* Copy NLA strip */
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NlaStrip *copy_nlastrip (NlaStrip *strip)
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{
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NlaStrip *strip_d;
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/* sanity check */
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if (strip == NULL)
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return NULL;
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/* make a copy */
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strip_d= MEM_dupallocN(strip);
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strip_d->next= strip_d->prev= NULL;
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/* increase user-count of action */
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if (strip_d->act)
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strip_d->act->id.us++;
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/* copy F-Curves and modifiers */
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copy_fcurves(&strip_d->fcurves, &strip->fcurves);
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fcurve_copy_modifiers(&strip_d->modifiers, &strip->modifiers);
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/* return the strip */
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return strip_d;
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}
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/* Copy NLA Track */
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NlaTrack *copy_nlatrack (NlaTrack *nlt)
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{
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NlaStrip *strip, *strip_d;
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NlaTrack *nlt_d;
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/* sanity check */
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if (nlt == NULL)
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return NULL;
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/* make a copy */
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nlt_d= MEM_dupallocN(nlt);
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nlt_d->next= nlt_d->prev= NULL;
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/* make a copy of all the strips, one at a time */
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nlt_d->strips.first= nlt_d->strips.last= NULL;
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for (strip= nlt->strips.first; strip; strip= strip->next) {
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strip_d= copy_nlastrip(strip);
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BLI_addtail(&nlt_d->strips, strip_d);
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}
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/* return the copy */
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return nlt_d;
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}
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/* Copy all NLA data */
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void copy_nladata (ListBase *dst, ListBase *src)
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{
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NlaTrack *nlt, *nlt_d;
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/* sanity checks */
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if ELEM(NULL, dst, src)
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return;
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/* copy each NLA-track, one at a time */
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for (nlt= src->first; nlt; nlt= nlt->next) {
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/* make a copy, and add the copy to the destination list */
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nlt_d= copy_nlatrack(nlt);
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BLI_addtail(dst, nlt_d);
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}
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}
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/* Adding ------------------------------------------- */
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/* Add a NLA Track to the given AnimData
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* - prev: NLA-Track to add the new one after
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*/
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NlaTrack *add_nlatrack (AnimData *adt, NlaTrack *prev)
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{
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NlaTrack *nlt;
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/* sanity checks */
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if (adt == NULL)
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return NULL;
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/* allocate new track */
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nlt= MEM_callocN(sizeof(NlaTrack), "NlaTrack");
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/* set settings requiring the track to not be part of the stack yet */
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nlt->flag = NLATRACK_SELECTED;
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nlt->index= BLI_countlist(&adt->nla_tracks);
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/* add track to stack, and make it the active one */
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if (prev)
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BLI_insertlinkafter(&adt->nla_tracks, prev, nlt);
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else
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BLI_addtail(&adt->nla_tracks, nlt);
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BKE_nlatrack_set_active(&adt->nla_tracks, nlt);
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/* must have unique name, but we need to seed this */
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sprintf(nlt->name, "NlaTrack");
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BLI_uniquename(&adt->nla_tracks, nlt, "NlaTrack", '.', offsetof(NlaTrack, name), 64);
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/* return the new track */
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return nlt;
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}
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/* Add a NLA Strip referencing the given Action */
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NlaStrip *add_nlastrip (bAction *act)
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{
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NlaStrip *strip;
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/* sanity checks */
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if (act == NULL)
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return NULL;
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/* allocate new strip */
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strip= MEM_callocN(sizeof(NlaStrip), "NlaStrip");
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/* generic settings
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* - selected flag to highlight this to the user
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* - auto-blends to ensure that blend in/out values are automatically
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* determined by overlaps of strips
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* - (XXX) synchronisation of strip-length in accordance with changes to action-length
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* is not done though, since this should only really happens in editmode for strips now
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* though this decision is still subject to further review...
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*/
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strip->flag = NLASTRIP_FLAG_SELECT|NLASTRIP_FLAG_AUTO_BLENDS;
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/* assign the action reference */
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strip->act= act;
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id_us_plus(&act->id);
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/* determine initial range
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* - strip length cannot be 0... ever...
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*/
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calc_action_range(strip->act, &strip->actstart, &strip->actend, 1);
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strip->start = strip->actstart;
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strip->end = (IS_EQ(strip->actstart, strip->actend)) ? (strip->actstart + 1.0f): (strip->actend);
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/* strip should be referenced as-is */
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strip->scale= 1.0f;
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strip->repeat = 1.0f;
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/* return the new strip */
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return strip;
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}
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/* Add new NLA-strip to the top of the NLA stack - i.e. into the last track if space, or a new one otherwise */
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NlaStrip *add_nlastrip_to_stack (AnimData *adt, bAction *act)
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{
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NlaStrip *strip;
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NlaTrack *nlt;
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/* sanity checks */
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if ELEM(NULL, adt, act)
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return NULL;
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/* create a new NLA strip */
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strip= add_nlastrip(act);
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if (strip == NULL)
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return NULL;
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/* firstly try adding strip to last track, but if that fails, add to a new track */
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if (BKE_nlatrack_add_strip(adt->nla_tracks.last, strip) == 0) {
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/* trying to add to the last track failed (no track or no space),
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* so add a new track to the stack, and add to that...
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*/
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nlt= add_nlatrack(adt, NULL);
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BKE_nlatrack_add_strip(nlt, strip);
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}
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/* returns the strip added */
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return strip;
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}
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/* *************************************************** */
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/* NLA Evaluation <-> Editing Stuff */
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/* Strip Mapping ------------------------------------- */
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/* non clipped mapping for strip-time <-> global time (for Action-Clips)
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* invert = convert action-strip time to global time
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*/
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static float nlastrip_get_frame_actionclip (NlaStrip *strip, float cframe, short invert)
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{
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float length, actlength, repeat, scale;
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/* get number of repeats */
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if (IS_EQ(strip->repeat, 0.0f)) strip->repeat = 1.0f;
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repeat = strip->repeat;
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/* scaling */
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if (IS_EQ(strip->scale, 0.0f)) strip->scale= 1.0f;
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scale = (float)fabs(strip->scale); /* scale must be positive - we've got a special flag for reversing */
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/* length of referenced action */
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actlength = strip->actend - strip->actstart;
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if (IS_EQ(actlength, 0.0f)) actlength = 1.0f;
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/* length of strip */
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length= actlength * scale * repeat;
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if (IS_EQ(length, 0.0f)) length= strip->end - strip->start;
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/* reversed = play strip backwards */
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if (strip->flag & NLASTRIP_FLAG_REVERSE) {
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/* invert = convert action-strip time to global time */
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if (invert)
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return length*(strip->actend - cframe)/(repeat*actlength) + strip->start;
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else
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return strip->actend - repeat*actlength*(cframe - strip->start)/length;
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}
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else {
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/* invert = convert action-strip time to global time */
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if (invert)
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return length*(cframe - strip->actstart)/(repeat*actlength) + strip->start;
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else
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return repeat*actlength*(cframe - strip->start)/length + strip->actstart;
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}
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}
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/* non clipped mapping for strip-time <-> global time (for Transitions)
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* invert = convert action-strip time to global time
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*/
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static float nlastrip_get_frame_transition (NlaStrip *strip, float cframe, short invert)
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{
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float length;
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/* length of strip */
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length= strip->end - strip->start;
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/* reversed = play strip backwards */
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if (strip->flag & NLASTRIP_FLAG_REVERSE) {
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/* invert = convert within-strip-time to global time */
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if (invert)
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return strip->end - (length * cframe);
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else
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return (strip->end - cframe) / length;
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}
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else {
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/* invert = convert within-strip-time to global time */
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if (invert)
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return (length * cframe) + strip->start;
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else
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return (cframe - strip->start) / length;
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}
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}
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/* non clipped mapping for strip-time <-> global time
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* invert = convert action-strip time to global time
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*
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* only secure for 'internal' (i.e. within AnimSys evaluation) operations,
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* but should not be directly relied on for stuff which interacts with editors
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*/
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float nlastrip_get_frame (NlaStrip *strip, float cframe, short invert)
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{
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switch (strip->type) {
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case NLASTRIP_TYPE_TRANSITION: /* transition */
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return nlastrip_get_frame_transition(strip, cframe, invert);
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case NLASTRIP_TYPE_CLIP: /* action-clip (default) */
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default:
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return nlastrip_get_frame_actionclip(strip, cframe, invert);
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}
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}
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/* Non clipped mapping for strip-time <-> global time
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* invert = convert strip-time to global time
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*
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* Public API method - perform this mapping using the given AnimData block
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* and perform any necessary sanity checks on the value
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*/
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float BKE_nla_tweakedit_remap (AnimData *adt, float cframe, short invert)
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{
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NlaStrip *strip;
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/* sanity checks
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* - obviously we've got to have some starting data
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* - when not in tweakmode, the active Action does not have any scaling applied :)
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*/
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if ((adt == NULL) || (adt->flag & ADT_NLA_EDIT_ON)==0)
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return cframe;
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/* if the active-strip info has been stored already, access this, otherwise look this up
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* and store for (very probable) future usage
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*/
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if (adt->actstrip == NULL) {
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NlaTrack *nlt= BKE_nlatrack_find_active(&adt->nla_tracks);
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adt->actstrip= BKE_nlastrip_find_active(nlt);
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}
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strip= adt->actstrip;
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/* sanity checks
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* - in rare cases, we may not be able to find this strip for some reason (internal error)
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* - for now, if the user has defined a curve to control the time, this correction cannot be performed
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* reliably...
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*/
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if ((strip == NULL) || (strip->flag & NLASTRIP_FLAG_USR_TIME))
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return cframe;
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/* perform the correction now... */
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return nlastrip_get_frame(strip, cframe, invert);
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}
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/* *************************************************** */
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/* Basic Utilities */
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/* NLA-Tracks ---------------------------------------- */
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/* Find the active NLA-track for the given stack */
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NlaTrack *BKE_nlatrack_find_active (ListBase *tracks)
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{
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NlaTrack *nlt;
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/* sanity check */
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if ELEM(NULL, tracks, tracks->first)
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return NULL;
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/* try to find the first active track */
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for (nlt= tracks->first; nlt; nlt= nlt->next) {
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if (nlt->flag & NLATRACK_ACTIVE)
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return nlt;
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}
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/* none found */
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return NULL;
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}
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/* Toggle the 'solo' setting for the given NLA-track, making sure that it is the only one
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* that has this status in its AnimData block.
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*/
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void BKE_nlatrack_solo_toggle (AnimData *adt, NlaTrack *nlt)
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{
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NlaTrack *nt;
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/* sanity check */
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if ELEM(NULL, adt, adt->nla_tracks.first)
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return;
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/* firstly, make sure 'solo' flag for all tracks is disabled */
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for (nt= adt->nla_tracks.first; nt; nt= nt->next) {
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if (nt != nlt)
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nt->flag &= ~NLATRACK_SOLO;
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}
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/* now, enable 'solo' for the given track if appropriate */
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if (nlt) {
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/* toggle solo status */
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nlt->flag ^= NLATRACK_SOLO;
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/* set or clear solo-status on AnimData */
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if (nlt->flag & NLATRACK_SOLO)
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adt->flag |= ADT_NLA_SOLO_TRACK;
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else
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adt->flag &= ~ADT_NLA_SOLO_TRACK;
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}
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else
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adt->flag &= ~ADT_NLA_SOLO_TRACK;
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}
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/* Make the given NLA-track the active one for the given stack. If no track is provided,
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* this function can be used to simply deactivate all the NLA tracks in the given stack too.
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*/
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void BKE_nlatrack_set_active (ListBase *tracks, NlaTrack *nlt_a)
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{
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NlaTrack *nlt;
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/* sanity check */
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if ELEM(NULL, tracks, tracks->first)
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return;
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/* deactive all the rest */
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for (nlt= tracks->first; nlt; nlt= nlt->next)
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nlt->flag &= ~NLATRACK_ACTIVE;
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|
|
/* set the given one as the active one */
|
|
if (nlt_a)
|
|
nlt_a->flag |= NLATRACK_ACTIVE;
|
|
}
|
|
|
|
/* Check if there is any space in the last track to add the given strip */
|
|
short BKE_nlatrack_has_space (NlaTrack *nlt, float start, float end)
|
|
{
|
|
NlaStrip *strip;
|
|
|
|
/* sanity checks */
|
|
if ((nlt == NULL) || IS_EQ(start, end))
|
|
return 0;
|
|
if (start > end) {
|
|
puts("BKE_nlatrack_has_space error... start and end arguments swapped");
|
|
SWAP(float, start, end);
|
|
}
|
|
|
|
/* loop over NLA strips checking for any overlaps with this area... */
|
|
for (strip= nlt->strips.first; strip; strip= strip->next) {
|
|
/* if start frame of strip is past the target end-frame, that means that
|
|
* we've gone past the window we need to check for, so things are fine
|
|
*/
|
|
if (strip->start > end)
|
|
return 1;
|
|
|
|
/* if the end of the strip is greater than either of the boundaries, the range
|
|
* must fall within the extents of the strip
|
|
*/
|
|
if ((strip->end > start) || (strip->end > end))
|
|
return 0;
|
|
}
|
|
|
|
/* if we are still here, we haven't encountered any overlapping strips */
|
|
return 1;
|
|
}
|
|
|
|
/* Rearrange the strips in the track so that they are always in order
|
|
* (usually only needed after a strip has been moved)
|
|
*/
|
|
void BKE_nlatrack_sort_strips (NlaTrack *nlt)
|
|
{
|
|
ListBase tmp = {NULL, NULL};
|
|
NlaStrip *strip, *sstrip;
|
|
|
|
/* sanity checks */
|
|
if ELEM(NULL, nlt, nlt->strips.first)
|
|
return;
|
|
|
|
/* we simply perform insertion sort on this list, since it is assumed that per track,
|
|
* there are only likely to be at most 5-10 strips
|
|
*/
|
|
for (strip= nlt->strips.first; strip; strip= strip->next) {
|
|
short not_added = 1;
|
|
|
|
/* remove this strip from the list, and add it to the new list, searching from the end of
|
|
* the list, assuming that the lists are in order
|
|
*/
|
|
BLI_remlink(&nlt->strips, strip);
|
|
|
|
for (sstrip= tmp.last; not_added && sstrip; sstrip= sstrip->prev) {
|
|
/* check if add after */
|
|
if (sstrip->end < strip->start) {
|
|
BLI_insertlinkafter(&tmp, sstrip, strip);
|
|
not_added= 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* add before first? */
|
|
if (not_added)
|
|
BLI_addhead(&tmp, strip);
|
|
}
|
|
|
|
/* reassign the start and end points of the strips */
|
|
nlt->strips.first= tmp.first;
|
|
nlt->strips.last= tmp.last;
|
|
}
|
|
|
|
/* Add the given NLA-Strip to the given NLA-Track, assuming that it
|
|
* isn't currently attached to another one
|
|
*/
|
|
short BKE_nlatrack_add_strip (NlaTrack *nlt, NlaStrip *strip)
|
|
{
|
|
NlaStrip *ns;
|
|
short not_added = 1;
|
|
|
|
/* sanity checks */
|
|
if ELEM(NULL, nlt, strip)
|
|
return 0;
|
|
|
|
/* check if any space to add */
|
|
if (BKE_nlatrack_has_space(nlt, strip->start, strip->end)==0)
|
|
return 0;
|
|
|
|
/* find the right place to add the strip to the nominated track */
|
|
for (ns= nlt->strips.first; ns; ns= ns->next) {
|
|
/* if current strip occurs after the new strip, add it before */
|
|
if (ns->start > strip->end) {
|
|
BLI_insertlinkbefore(&nlt->strips, ns, strip);
|
|
not_added= 0;
|
|
break;
|
|
}
|
|
}
|
|
if (not_added) {
|
|
/* just add to the end of the list of the strips then... */
|
|
BLI_addtail(&nlt->strips, strip);
|
|
}
|
|
|
|
/* added... */
|
|
return 1;
|
|
}
|
|
|
|
/* NLA Strips -------------------------------------- */
|
|
|
|
/* Find the active NLA-strip within the given track */
|
|
NlaStrip *BKE_nlastrip_find_active (NlaTrack *nlt)
|
|
{
|
|
NlaStrip *strip;
|
|
|
|
/* sanity check */
|
|
if ELEM(NULL, nlt, nlt->strips.first)
|
|
return NULL;
|
|
|
|
/* try to find the first active strip */
|
|
for (strip= nlt->strips.first; strip; strip= strip->next) {
|
|
if (strip->flag & NLASTRIP_FLAG_ACTIVE)
|
|
return strip;
|
|
}
|
|
|
|
/* none found */
|
|
return NULL;
|
|
}
|
|
|
|
/* Does the given NLA-strip fall within the given bounds (times)? */
|
|
short BKE_nlastrip_within_bounds (NlaStrip *strip, float min, float max)
|
|
{
|
|
const float stripLen= (strip) ? strip->end - strip->start : 0.0f;
|
|
const float boundsLen= (float)fabs(max - min);
|
|
|
|
/* sanity checks */
|
|
if ((strip == NULL) || IS_EQ(stripLen, 0.0f) || IS_EQ(boundsLen, 0.0f))
|
|
return 0;
|
|
|
|
/* only ok if at least part of the strip is within the bounding window
|
|
* - first 2 cases cover when the strip length is less than the bounding area
|
|
* - second 2 cases cover when the strip length is greater than the bounding area
|
|
*/
|
|
if ( (stripLen < boundsLen) &&
|
|
!(IN_RANGE(strip->start, min, max) ||
|
|
IN_RANGE(strip->end, min, max)) )
|
|
{
|
|
return 0;
|
|
}
|
|
if ( (stripLen > boundsLen) &&
|
|
!(IN_RANGE(min, strip->start, strip->end) ||
|
|
IN_RANGE(max, strip->start, strip->end)) )
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/* should be ok! */
|
|
return 1;
|
|
}
|
|
|
|
/* Is the given NLA-strip the first one to occur for the given AnimData block */
|
|
// TODO: make this an api method if necesary, but need to add prefix first
|
|
short nlastrip_is_first (AnimData *adt, NlaStrip *strip)
|
|
{
|
|
NlaTrack *nlt;
|
|
NlaStrip *ns;
|
|
|
|
/* sanity checks */
|
|
if ELEM(NULL, adt, strip)
|
|
return 0;
|
|
|
|
/* check if strip has any strips before it */
|
|
if (strip->prev)
|
|
return 0;
|
|
|
|
/* check other tracks to see if they have a strip that's earlier */
|
|
// TODO: or should we check that the strip's track is also the first?
|
|
for (nlt= adt->nla_tracks.first; nlt; nlt= nlt->next) {
|
|
/* only check the first strip, assuming that they're all in order */
|
|
ns= nlt->strips.first;
|
|
if (ns) {
|
|
if (ns->start < strip->start)
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* should be first now */
|
|
return 1;
|
|
}
|
|
|
|
/* Tools ------------------------------------------- */
|
|
|
|
/* For the given AnimData block, add the active action to the NLA
|
|
* stack (i.e. 'push-down' action). The UI should only allow this
|
|
* for normal editing only (i.e. not in editmode for some strip's action),
|
|
* so no checks for this are performed.
|
|
*/
|
|
// TODO: maybe we should have checks for this too...
|
|
void BKE_nla_action_pushdown (AnimData *adt)
|
|
{
|
|
NlaStrip *strip;
|
|
|
|
/* sanity checks */
|
|
// TODO: need to report the error for this
|
|
if ELEM(NULL, adt, adt->action)
|
|
return;
|
|
|
|
/* if the action is empty, we also shouldn't try to add to stack,
|
|
* as that will cause us grief down the track
|
|
*/
|
|
// TODO: what about modifiers?
|
|
if (action_has_motion(adt->action) == 0) {
|
|
printf("BKE_nla_action_pushdown(): action has no data \n");
|
|
return;
|
|
}
|
|
|
|
/* add a new NLA strip to the track, which references the active action */
|
|
strip= add_nlastrip_to_stack(adt, adt->action);
|
|
|
|
/* do other necessary work on strip */
|
|
if (strip) {
|
|
/* clear reference to action now that we've pushed it onto the stack */
|
|
adt->action->id.us--;
|
|
adt->action= NULL;
|
|
|
|
/* if the strip is the first one in the track it lives in, check if there
|
|
* are strips in any other tracks that may be before this, and set the extend
|
|
* mode accordingly
|
|
*/
|
|
if (nlastrip_is_first(adt, strip) == 0) {
|
|
/* not first, so extend mode can only be NLASTRIP_EXTEND_HOLD_FORWARD not NLASTRIP_EXTEND_HOLD,
|
|
* so that it doesn't override strips in previous tracks
|
|
*/
|
|
strip->extendmode= NLASTRIP_EXTEND_HOLD_FORWARD;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* Find the active strip + track combo, and set them up as the tweaking track,
|
|
* and return if successful or not.
|
|
*/
|
|
short BKE_nla_tweakmode_enter (AnimData *adt)
|
|
{
|
|
NlaTrack *nlt, *activeTrack=NULL;
|
|
NlaStrip *strip, *activeStrip=NULL;
|
|
|
|
/* verify that data is valid */
|
|
if ELEM(NULL, adt, adt->nla_tracks.first)
|
|
return 0;
|
|
|
|
/* if block is already in tweakmode, just leave, but we should report
|
|
* that this block is in tweakmode (as our returncode)
|
|
*/
|
|
if (adt->flag & ADT_NLA_EDIT_ON)
|
|
return 1;
|
|
|
|
/* go over the tracks, finding the active one, and its active strip
|
|
* - if we cannot find both, then there's nothing to do
|
|
*/
|
|
for (nlt= adt->nla_tracks.first; nlt; nlt= nlt->next) {
|
|
/* check if active */
|
|
if (nlt->flag & NLATRACK_ACTIVE) {
|
|
/* store reference to this active track */
|
|
activeTrack= nlt;
|
|
|
|
/* now try to find active strip */
|
|
activeStrip= BKE_nlastrip_find_active(nlt);
|
|
break;
|
|
}
|
|
}
|
|
if ELEM3(NULL, activeTrack, activeStrip, activeStrip->act) {
|
|
printf("NLA tweakmode enter - neither active requirement found \n");
|
|
return 0;
|
|
}
|
|
|
|
/* go over all the tracks up to the active one, tagging each strip that uses the same
|
|
* action as the active strip, but leaving everything else alone
|
|
*/
|
|
for (nlt= activeTrack->prev; nlt; nlt= nlt->prev) {
|
|
for (strip= nlt->strips.first; strip; strip= strip->next) {
|
|
if (strip->act == activeStrip->act)
|
|
strip->flag |= NLASTRIP_FLAG_TWEAKUSER;
|
|
else
|
|
strip->flag &= ~NLASTRIP_FLAG_TWEAKUSER; // XXX probably don't need to clear this...
|
|
}
|
|
}
|
|
|
|
|
|
/* go over all the tracks after AND INCLUDING the active one, tagging them as being disabled
|
|
* - the active track needs to also be tagged, otherwise, it'll overlap with the tweaks going on
|
|
*/
|
|
for (nlt= activeTrack; nlt; nlt= nlt->next)
|
|
nlt->flag |= NLATRACK_DISABLED;
|
|
|
|
/* handle AnimData level changes:
|
|
* - 'real' active action to temp storage (no need to change user-counts)
|
|
* - action of active strip set to be the 'active action', and have its usercount incremented
|
|
* - editing-flag for this AnimData block should also get turned on (for more efficient restoring)
|
|
* - take note of the active strip for mapping-correction of keyframes in the action being edited
|
|
*/
|
|
adt->tmpact= adt->action;
|
|
adt->action= activeStrip->act;
|
|
adt->actstrip= activeStrip;
|
|
id_us_plus(&activeStrip->act->id);
|
|
adt->flag |= ADT_NLA_EDIT_ON;
|
|
|
|
/* done! */
|
|
return 1;
|
|
}
|
|
|
|
/* Exit tweakmode for this AnimData block */
|
|
void BKE_nla_tweakmode_exit (AnimData *adt)
|
|
{
|
|
NlaStrip *strip;
|
|
NlaTrack *nlt;
|
|
|
|
/* verify that data is valid */
|
|
if ELEM(NULL, adt, adt->nla_tracks.first)
|
|
return;
|
|
|
|
/* hopefully the flag is correct - skip if not on */
|
|
if ((adt->flag & ADT_NLA_EDIT_ON) == 0)
|
|
return;
|
|
|
|
// TODO: need to sync the user-strip with the new state of the action!
|
|
|
|
/* for all NLA-tracks, clear the 'disabled' flag
|
|
* for all NLA-strips, clear the 'tweak-user' flag
|
|
*/
|
|
for (nlt= adt->nla_tracks.first; nlt; nlt= nlt->next) {
|
|
nlt->flag &= ~NLATRACK_DISABLED;
|
|
|
|
for (strip= nlt->strips.first; strip; strip= strip->next)
|
|
strip->flag &= ~NLASTRIP_FLAG_TWEAKUSER;
|
|
}
|
|
|
|
/* handle AnimData level changes:
|
|
* - 'temporary' active action needs its usercount decreased, since we're removing this reference
|
|
* - 'real' active action is restored from storage
|
|
* - storage pointer gets cleared (to avoid having bad notes hanging around)
|
|
* - editing-flag for this AnimData block should also get turned off
|
|
* - clear pointer to active strip
|
|
*/
|
|
if (adt->action) adt->action->id.us--;
|
|
adt->action= adt->tmpact;
|
|
adt->tmpact= NULL;
|
|
adt->actstrip= NULL;
|
|
adt->flag &= ~ADT_NLA_EDIT_ON;
|
|
}
|
|
|
|
/* *************************************************** */
|