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blender-archive/source/blender/blenkernel/BKE_lamp.h
Bastien Montagne e5916187e8 First step to handle missing libs/datablocks when reading a file.
Idea is, instead of ignoring completely missing linked datablocks, to
create void placeholders for them.

That way, you can work on your file, save it, and find again your missing data once
lib becomes available again. Or you can edit missing lib's path (in Outliner),
save and reload the file, and you are done.

Also, Outliner now shows broken libraries (and placeholders) with a 'broken lib' icon.

Future plans are also to be able to relocate missing libs and reload them at runtime.

Code notes:
    - Placeholder ID is just a regular datablock of same type as expected linked one,
      with 'default' data, and a LIB_MISSING bitflag set.
    - To allow creation of such datablocks, creation of datablocks in BKE was split in two step:
        + Allocation of memory itself.
        + Setting of all internal data to default values.

See also the design task (T43351).

Reviewed by @campbellbarton, thanks a bunch!

Differential Revision: https://developer.blender.org/D1394
2015-10-20 14:44:57 +02:00

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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): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef __BKE_LAMP_H__
#define __BKE_LAMP_H__
/** \file BKE_lamp.h
* \ingroup bke
* \brief General operations, lookup, etc. for blender lamps.
*/
#ifdef __cplusplus
extern "C" {
#endif
#include "BLI_compiler_attrs.h"
struct Lamp;
struct Main;
struct Scene;
void BKE_lamp_init(struct Lamp *la);
struct Lamp *BKE_lamp_add(struct Main *bmain, const char *name) ATTR_WARN_UNUSED_RESULT;
struct Lamp *BKE_lamp_copy(struct Lamp *la) ATTR_WARN_UNUSED_RESULT;
struct Lamp *localize_lamp(struct Lamp *la) ATTR_WARN_UNUSED_RESULT;
void BKE_lamp_make_local(struct Lamp *la);
void BKE_lamp_free(struct Lamp *la);
void lamp_drivers_update(struct Scene *scene, struct Lamp *la, float ctime);
#ifdef __cplusplus
}
#endif
#endif