Online tool for OMR compliance

[Lasse Deleuran]

When uploading sets to BrickHub.org, it now checks for OMR compliance, and in some cases, can fix errors directly on the site. here is a video showing how to use it. The checks and fixes are currently implemented in this Javascript file: LDROMR.js and are:

• Check and fix file headers so they read "0 FILE <set number> - <name>.ldr" then "0 <description>", followed by "0 Name:<set number> - <name>.ldr".
  
• Ensure the file name is "<set number> - <name>.mpd" with optional qualifiers starting from "-1" (See discussion below)
  
• Check and fix moved parts: If a part is named "~Moved <name>" then replace its usages with "<name>.dat"
  
• Check and fix placements: If a large number of parts are placed with more than three decimals in the position or rotation, then round the placement to three decimals. Example: "1 16 0.0001 0 0 ..." becomes "1 16 0 0 0 ...".
  
• Check and fix all author lines: Ensure all authors are the same and read "!Author Name [username]"
  
• Check and fix all license lines to read "Redistributable under CCAL version 2.0 : see CAreadme.txt"
  
• Set all "0 LDRAW_ORG" lines to read either "Model" or "Unofficial_Model".
  
• Set the "0 LDRAW_ORG Unofficial_Part" in all unofficial parts of the file.
  
• Ensure all unofficial parts are copied into the MPD file and named with the set number prefix in the "0 FILE" and "0 Name:" lines.
  
• If the set is from 2007 or after and contains old colors (6, 7, or 8), then replace them with the newer colored parts.
  
• If the set is from before 2007 and contains new colors (70, 71, or 72), then replace them with the old colored parts.
  
• Inline textured parts according to the non-finalized spec.
  
• Substitute parts that have been replaced by LEGO. As an example, 2470 replaced 4459 in 1990, so the parts will be checked against the year.
  
• Verify that "Theme" lines correctly identify a theme.
  
• Verify that "History" lines are well formed.
  
• Verify that "History" lines are in the correct order.
  
• Check that tyres are colored 256 instead of 0.
  

The purpose of this work is to make it even easier to submit OMR-compliant model file - especially for people who are not using Windows, so they can't easily use MPDCenter.

I do not expect that I have found all OMR checks, and some of my checks might even be erroneous. This is why I am creating this thread. Let's discuss OMR checks and fixes