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blender-archive/source/blender/blenkernel/BKE_nla.h

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/**
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
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*
* 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.
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*
* 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,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
* The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
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* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Joshua Leung (full recode)
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*
* ***** END GPL LICENSE BLOCK *****
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*/
#ifndef BKE_NLA_H
#define BKE_NLA_H
struct AnimData;
struct NlaStrip;
struct NlaTrack;
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struct bAction;
/* ----------------------------- */
/* Data Management */
void free_nlastrip(ListBase *strips, struct NlaStrip *strip);
void free_nlatrack(ListBase *tracks, struct NlaTrack *nlt);
void free_nladata(ListBase *tracks);
struct NlaStrip *copy_nlastrip(struct NlaStrip *strip);
struct NlaTrack *copy_nlatrack(struct NlaTrack *nlt);
void copy_nladata(ListBase *dst, ListBase *src);
struct NlaTrack *add_nlatrack(struct AnimData *adt, struct NlaTrack *prev);
struct NlaStrip *add_nlastrip(struct bAction *act);
struct NlaStrip *add_nlastrip_to_stack(struct AnimData *adt, struct bAction *act);
/* ----------------------------- */
/* API */
short BKE_nlastrips_has_space(ListBase *strips, float start, float end);
void BKE_nlastrips_sort_strips(ListBase *strips);
short BKE_nlastrips_add_strip(ListBase *strips, struct NlaStrip *strip);
void BKE_nlastrips_make_metas(ListBase *strips, short temp);
void BKE_nlastrips_clear_metas(ListBase *strips, short onlySel, short onlyTemp);
void BKE_nlastrips_clear_metastrip(ListBase *strips, struct NlaStrip *strip);
short BKE_nlameta_add_strip(struct NlaStrip *mstrip, struct NlaStrip *strip);
void BKE_nlameta_flush_transforms(struct NlaStrip *mstrip);
/* ............ */
struct NlaTrack *BKE_nlatrack_find_active(ListBase *tracks);
void BKE_nlatrack_set_active(ListBase *tracks, struct NlaTrack *nlt);
void BKE_nlatrack_solo_toggle(struct AnimData *adt, struct NlaTrack *nlt);
short BKE_nlatrack_has_space(struct NlaTrack *nlt, float start, float end);
void BKE_nlatrack_sort_strips(struct NlaTrack *nlt);
NLA SoC: Transition Strips + Strip Adding Operators + Bugfixes == Transitions == Transition strips are now able to be created + evaluated. Transitions allow for interpolation between the endpoints of two adjacent strips in the same track (i.e. two strips which occur in the same track one after the other, but with a gap between them). - The current behaviour when only one endpoint affects some setting is non-optimal, since it appears somewhat inconsistently extend/replace values... - Transform code needs a few fixes still to deal with these == Strip Adding Operators == * New strips referencing Actions can be added using the Shift-A hotkey while in the strips-area. You must have a track selected first though. The new strip will get added, starting from the current frame, in the selected track(s) only if there is enough space to do so. Otherwise, the new strip gets added at the top of the stack in a new track. * New transition strips can be added with the Shift-T hotkey while in the strips area. You must have two adjacent strips selected for this to work. == New Backend Methods == * Recoded the strip/track adding API to be more flexible * Added a new method for testing whether F-Curve has any modifiers of with certain attributes. Will be used in a later bugfix... == Bugfixes == - Fixed bug with strip-blending which caused the blending modes to be useless. - NLA buttons now use proper poll callbacks instead of defining checks - Commented out missing operator in menus, silencing warnings in console - Removed obsolete/incorrect comments
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short BKE_nlatrack_add_strip(struct NlaTrack *nlt, struct NlaStrip *strip);
/* ............ */
NLA SoC: Operators for 'tweaking' strip actions (TAB-Key for both) In this commit, I've introduced the mechanism by which actions already referenced by strips used in the NLA can be edited (or 'tweaked'). To use, simply select a strip you wish to edit, and hit that TAB key to start tweaking that strip's action, and hit TAB again once you're done. What happens when you enter 'tweak mode': 1) The action of the active strip temporarily becomes the 'active action' of the AnimData block. You are now able to edit this in one of the Animation Editors (DopeSheet/Action, Graph Editors) as per normal (i.e. sliding keyframes around, inserting keyframes, etc.). The 'action-line' will therefore get drawn immediately above the active track containing the active strip, so that it's clear that that's what we're editing. 2) All the NLA-tracks (and all the strips within them) that occur after the track that the active strip lived in get disabled while you're in tweakmode. This is equivalent to travelling back to an earlier state in a construction history stack. 3) The active NLA track also gets disabled while in tweakmode, since it would otherwise interfere with the correct functioning of the tweaking for the action of interest. 4) The 'real' active action (i.e. the one displaced by the active strip's action) gets put into temp storage, and will be restored after you exit tweakmode. 5) Any strips which also reference the action being tweaked will get highlighted in red shading to indicate that you may be making some changes to the action which you don't really want to make for the other users too. Please note though, that this is only a rough prototype of this functionality, with some niceties still to come. i.e.: * NLA-tracks after the active track should still get drawn above the 'tweaking action line', but perhaps with different appearance? * Various tools will still need awareness of this to prevent corrupting operations from taking place. How to proceed is still undecided... * When exiting tweak-mode, the strip the action came from still needs some form of syncing with the modified action... there are a few tricky issues here that will need to be solved * Evaluation code doesn't totally take this into account yet... --- Also, fixed a number of bugs with various code (notably selection, and also a few drawing bugs)
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struct NlaStrip *BKE_nlastrip_find_active(struct NlaTrack *nlt);
void BKE_nlastrip_set_active(struct AnimData *adt, struct NlaStrip *strip);
short BKE_nlastrip_within_bounds(struct NlaStrip *strip, float min, float max);
void BKE_nlastrip_recalculate_bounds(struct NlaStrip *strip);
void BKE_nlastrip_validate_name(struct AnimData *adt, struct NlaStrip *strip);
/* ............ */
short BKE_nlatrack_has_animated_strips(struct NlaTrack *nlt);
short BKE_nlatracks_have_animated_strips(ListBase *tracks);
void BKE_nlastrip_validate_fcurves(struct NlaStrip *strip);
void BKE_nla_validate_state(struct AnimData *adt);
/* ............ */
void BKE_nla_action_pushdown(struct AnimData *adt);
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NLA SoC: Operators for 'tweaking' strip actions (TAB-Key for both) In this commit, I've introduced the mechanism by which actions already referenced by strips used in the NLA can be edited (or 'tweaked'). To use, simply select a strip you wish to edit, and hit that TAB key to start tweaking that strip's action, and hit TAB again once you're done. What happens when you enter 'tweak mode': 1) The action of the active strip temporarily becomes the 'active action' of the AnimData block. You are now able to edit this in one of the Animation Editors (DopeSheet/Action, Graph Editors) as per normal (i.e. sliding keyframes around, inserting keyframes, etc.). The 'action-line' will therefore get drawn immediately above the active track containing the active strip, so that it's clear that that's what we're editing. 2) All the NLA-tracks (and all the strips within them) that occur after the track that the active strip lived in get disabled while you're in tweakmode. This is equivalent to travelling back to an earlier state in a construction history stack. 3) The active NLA track also gets disabled while in tweakmode, since it would otherwise interfere with the correct functioning of the tweaking for the action of interest. 4) The 'real' active action (i.e. the one displaced by the active strip's action) gets put into temp storage, and will be restored after you exit tweakmode. 5) Any strips which also reference the action being tweaked will get highlighted in red shading to indicate that you may be making some changes to the action which you don't really want to make for the other users too. Please note though, that this is only a rough prototype of this functionality, with some niceties still to come. i.e.: * NLA-tracks after the active track should still get drawn above the 'tweaking action line', but perhaps with different appearance? * Various tools will still need awareness of this to prevent corrupting operations from taking place. How to proceed is still undecided... * When exiting tweak-mode, the strip the action came from still needs some form of syncing with the modified action... there are a few tricky issues here that will need to be solved * Evaluation code doesn't totally take this into account yet... --- Also, fixed a number of bugs with various code (notably selection, and also a few drawing bugs)
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short BKE_nla_tweakmode_enter(struct AnimData *adt);
void BKE_nla_tweakmode_exit(struct AnimData *adt);
/* ----------------------------- */
/* Time Mapping */
/* time mapping conversion modes */
enum {
/* convert from global time to strip time - for evaluation */
NLATIME_CONVERT_EVAL = 0,
/* convert from global time to strip time - for editing corrections */
// XXX old 0 invert
NLATIME_CONVERT_UNMAP,
/* convert from strip time to global time */
// xxx old 1 invert
NLATIME_CONVERT_MAP,
} eNlaTime_ConvertModes;
float BKE_nla_tweakedit_remap(struct AnimData *adt, float cframe, short mode);
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#endif