OMR Spec - Updated 8/25
2011-08-25, 10:41 (This post was last modified: 2011-08-26, 12:29 by Orion Pobursky.)
2011-08-25, 10:41 (This post was last modified: 2011-08-26, 12:29 by Orion Pobursky.)
Here's the latest draft. Discuss!! (Note: there is a quote bug that's removing the text between <>. Be aware of that and restore the text if needed)
--
The Offical Model Repository Specification
Version: 0.4 (will turn 1.0.0 upon ratification by the LSC)
Author: Orion Pobursky
Purpose:
--------
The Official Model Repository (OMR) is a database of file in the LDraw File Format describing models that are released as sets by LEGO®.
For consistency between models and ease of indexing by software, a standard for the file headers, names, and hierarchy in the OMR is needed. This document will outline the extra requirements (in addition to those set forth in the current LDraw File Format specification) for a model to be included in the OMR
Base Requirements:
------------------
All files in the model will conform to the current LDraw File Format
Base File Naming:
-----------------
Each model in the OMR will consist of several files that are packaged together into a single MPD file. For sets that include instructions for multiple models, each model will have its own MPD file. Each MPD for the set will be named in the following manner:
<Set Number> - <Set Name> - <Sub Model Name>
Where:
<Set Number>: the number assigned on the container of the set
<Set Name>: The name of the set printed on the container in Australian English
<Sub Model Name>: This is Optional in most cases. This is required for alternate models that are detailed in instructions (e.g. the Creator theme). In this case the naming is left to the discretion of the author but should be descriptive of the model contained in the MPD.
Example:
The creator set 4896 - Roaring Roadsters has 3 models in the instructions:
Set 4896 - Roaring Roadsters - Roadster.mpd
Set 4896 - Roaring Roadsters - Dragster.mpd
etc...
For playsets or other sets where there are multiple models that are part of an integral whole, all of the submodels will be contained in one MPD.
MPD File Structure:
-------------------
The MPD will conform to the MPD File Specification.
The naming of the individual files in the MPD is up to the discretion of the author with the following guidance:
- A logical naming scheme is highly desired.
- Individual models in the set (e.g. a vehicle or minifig) shall have their own separate file inside the MPD.
- Minifig file name should have the name of the character, if known
- The <MPD Filename> is required to be pre-pended to the file name of each individual file in the MPD
The unofficial parts are allowed to be used. The filename of the unofficial part is subject to the naming rules above (e.g. 33056.dat would be renamed to <MPD Filename> - 33956.dat). It is highly encouraged that any parts created for use in a OMR file be submitted to the LDraw.org Parts Tracker.
If a part is unavailable either officially or on the LDraw.org Parts Tracker, a suitable substitution may be made. If the unavailable part is a patterned part with an unpatterned version available use the unpatterned version. A comment should be inserted stating that a substitution has been made or, if no substitution is available/suitable, that a piece has been omitted. Reference the step and page number of the instructions if possible.
Example:
0 // The next piece should have the Star Wars Hatch pattern per step X on page Y
or
0 // Bionicle piece X should go here per step Y on page Z
File Headers:
-------------
Each individual model file in the MPD must have a standard header format.
Standard Header:
0 FILE <MPD Filename> - <Filename>.ldr
0 <MPD Filename> - <File Description>
0 Name: <MPD Filename> - <Filename>.ldr
0 Author: <Author Name>
0 !LDRAW_ORG Official Model Repository
0 !LICENSE Redistributable under CCAL version 3.0 : see CAreadme.txt
0 !THEME Theme name
0 !KEYWORDS words, more words,…,
0 !KEYWORDS words in second row, …, final words
0 !HISTORY YYYY-MM-DD [<Author Name>] Free text description of change. This can wrap to a
0 !HISTORY YYYY-MM-DD [<Author Name>e] second row with the same date if necessary. However authors should lean toward writing longer
0 !HISTORY YYYY-MM-DD [<Author Name>e] single !HISTORY lines(and not feel constrained to the historic 80-character limit on line length)
Where:
<MPD Filename>: The name of the containing MPD
<Filename>: The name of the file
<Author Name>: The name of the author. Real full name are highly desired but not required. If the full name is not provided, a first or last name, with or with out initials, is requested.
Optional commands are !THEME, !KEYWORDS, and !HISTORY
Example:
To Be Inserted Later
META commands:
--------------
All META commands are allowed in the model file but not specifically required except as specified for the header. If included, any META commands used should enable any instructions generated to be as close to the official instructions as possible.
--
The Offical Model Repository Specification
Version: 0.4 (will turn 1.0.0 upon ratification by the LSC)
Author: Orion Pobursky
Purpose:
--------
The Official Model Repository (OMR) is a database of file in the LDraw File Format describing models that are released as sets by LEGO®.
For consistency between models and ease of indexing by software, a standard for the file headers, names, and hierarchy in the OMR is needed. This document will outline the extra requirements (in addition to those set forth in the current LDraw File Format specification) for a model to be included in the OMR
Base Requirements:
------------------
All files in the model will conform to the current LDraw File Format
Base File Naming:
-----------------
Each model in the OMR will consist of several files that are packaged together into a single MPD file. For sets that include instructions for multiple models, each model will have its own MPD file. Each MPD for the set will be named in the following manner:
<Set Number> - <Set Name> - <Sub Model Name>
Where:
<Set Number>: the number assigned on the container of the set
<Set Name>: The name of the set printed on the container in Australian English
<Sub Model Name>: This is Optional in most cases. This is required for alternate models that are detailed in instructions (e.g. the Creator theme). In this case the naming is left to the discretion of the author but should be descriptive of the model contained in the MPD.
Example:
The creator set 4896 - Roaring Roadsters has 3 models in the instructions:
Set 4896 - Roaring Roadsters - Roadster.mpd
Set 4896 - Roaring Roadsters - Dragster.mpd
etc...
For playsets or other sets where there are multiple models that are part of an integral whole, all of the submodels will be contained in one MPD.
MPD File Structure:
-------------------
The MPD will conform to the MPD File Specification.
The naming of the individual files in the MPD is up to the discretion of the author with the following guidance:
- A logical naming scheme is highly desired.
- Individual models in the set (e.g. a vehicle or minifig) shall have their own separate file inside the MPD.
- Minifig file name should have the name of the character, if known
- The <MPD Filename> is required to be pre-pended to the file name of each individual file in the MPD
The unofficial parts are allowed to be used. The filename of the unofficial part is subject to the naming rules above (e.g. 33056.dat would be renamed to <MPD Filename> - 33956.dat). It is highly encouraged that any parts created for use in a OMR file be submitted to the LDraw.org Parts Tracker.
If a part is unavailable either officially or on the LDraw.org Parts Tracker, a suitable substitution may be made. If the unavailable part is a patterned part with an unpatterned version available use the unpatterned version. A comment should be inserted stating that a substitution has been made or, if no substitution is available/suitable, that a piece has been omitted. Reference the step and page number of the instructions if possible.
Example:
0 // The next piece should have the Star Wars Hatch pattern per step X on page Y
or
0 // Bionicle piece X should go here per step Y on page Z
File Headers:
-------------
Each individual model file in the MPD must have a standard header format.
Standard Header:
0 FILE <MPD Filename> - <Filename>.ldr
0 <MPD Filename> - <File Description>
0 Name: <MPD Filename> - <Filename>.ldr
0 Author: <Author Name>
0 !LDRAW_ORG Official Model Repository
0 !LICENSE Redistributable under CCAL version 3.0 : see CAreadme.txt
0 !THEME Theme name
0 !KEYWORDS words, more words,…,
0 !KEYWORDS words in second row, …, final words
0 !HISTORY YYYY-MM-DD [<Author Name>] Free text description of change. This can wrap to a
0 !HISTORY YYYY-MM-DD [<Author Name>e] second row with the same date if necessary. However authors should lean toward writing longer
0 !HISTORY YYYY-MM-DD [<Author Name>e] single !HISTORY lines(and not feel constrained to the historic 80-character limit on line length)
Where:
<MPD Filename>: The name of the containing MPD
<Filename>: The name of the file
<Author Name>: The name of the author. Real full name are highly desired but not required. If the full name is not provided, a first or last name, with or with out initials, is requested.
Optional commands are !THEME, !KEYWORDS, and !HISTORY
Example:
To Be Inserted Later
META commands:
--------------
All META commands are allowed in the model file but not specifically required except as specified for the header. If included, any META commands used should enable any instructions generated to be as close to the official instructions as possible.