1 / 23

Introduction to LDraw

Introduction to LDraw. Goal: Orientation. Available virtual LEGO resources System Components Uses of the system The future of virtual LEGO Artistic accomplishments Needs and opportunities. Introduction: Ross Crawford. Part author / reviewer Author of txt2dat. Why Virtual LEGO?.

makani
Download Presentation

Introduction to LDraw

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Introduction to LDraw Brickvention 2006

  2. Goal: Orientation • Available virtual LEGO resources • System Components • Uses of the system • The future of virtual LEGO • Artistic accomplishments • Needs and opportunities Brickvention 2006

  3. Introduction: Ross Crawford • Part author / reviewer • Author of txt2dat Brickvention 2006

  4. Why Virtual LEGO? • Huge audience; education, hobby, industry • Document custom designs • Create instructions • Generate stunning artwork • Virtual bricks are free, and come in any color • It’s fun!  Brickvention 2006

  5. Brief History of LDraw • Created by James Jessiman • James’ early design embraced by AFOLs • New tools created • Ldraw Organisation formed, Ldraw.org • Now recognised by LEGO company “It’s a toy, not a business” – J.J. Brickvention 2006

  6. Resources: An Overview Brickvention 2006

  7. The LDraw System • Standard Language and Library • Almost 3000 LEGO parts in library • Open-source project born out of an online community • Around 100,000 users; enthusiasts of all ages and educators at all levels • Freely downloadable via www.LDraw.org Brickvention 2006

  8. Components OfThe LDraw System • Parts Library • LDraw Description Language • Tools • Editors • Viewers • Converters • Renderers • Batch Automation Brickvention 2006

  9. The LDraw Description Language • Text-based: Portability and Readability • Simple to parse • Hierarchical: primitives  parts  submodels  models • Well defined line syntax • Polygon-based • Lacks support for cylinders and round objects • No mesh support • Historical consistency guarantees compatibility The system is strong because of its simplicity and straightforward nature. Brickvention 2006

  10. Anatomy of LDraw Files 0 Three Brick Stack 0 Name: 3 bricks.ldr 1 4 0 0 0 1 0 0 0 1 0 0 0 1 3001.dat 1 1 40 0 40 1 0 0 0 1 0 0 0 1 3001.dat 1 14 20 -24 20 1 0 0 0 1 0 0 0 1 3001.dat Brickvention 2006

  11. Line Breakdown Brickvention 2006

  12. Hierarchy Illustrated 0 Disc 1.0 0 Name: 4-4disc.dat 3 16 0 0 0 1 0 0 0.9239 0 0.3827 3 16 0 0 0 0.9239 0 0.3827 0.7071 0 0.7071 3 16 0 0 0 0.7071 0 0.7071 0.3827 0 0.9239 3 16 0 0 0 0.3827 0 0.9239 0 0 1 3 16 0 0 0 0 0 1 -0.3827 0 0.9239 3 16 0 0 0 -0.3827 0 0.9239 -0.7071 0 0.7071 3 16 0 0 0 -0.7071 0 0.7071 -0.9239 0 0.3827 3 16 0 0 0 -0.9239 0 0.3827 -1 0 -0 3 16 0 0 0 -1 0 -0 -0.9239 0 -0.3827 3 16 0 0 0 -0.9239 0 -0.3827 -0.7071 0 -0.7071 3 16 0 0 0 -0.7071 0 -0.7071 -0.3827 0 -0.9239 3 16 0 0 0 -0.3827 0 -0.9239 0 0 -1 3 16 0 0 0 0 0 -1 0.3827 0 -0.9239 3 16 0 0 0 0.3827 0 -0.9239 0.7071 0 -0.7071 3 16 0 0 0 0.7071 0 -0.7071 0.9239 0 -0.3827 3 16 0 0 0 0.9239 0 -0.3827 1 0 0 0 Three Brick Stack 0 Name: 3 bricks.ldr 1 4 0 0 0 1 0 0 0 1 0 0 0 1 3001.dat 1 1 40 0 40 1 0 0 0 1 0 0 0 1 3001.dat 1 14 20 -24 20 1 0 0 0 1 0 0 0 1 3001.dat 0 Brick 2 x 4 0 Name: 3001.dat 0 BFC INVERTNEXT 1 16 0 24 0 36 0 0 0 -20 0 0 0 16 box5.dat 1 16 0 24 0 40 0 0 0 -24 0 0 0 20 box5.dat 0 STUDS 1 16 30 0 10 1 0 0 0 1 0 0 0 1 stud.dat 1 16 10 0 10 1 0 0 0 1 0 0 0 1 stud.dat 1 16 -10 0 10 1 0 0 0 1 0 0 0 1 stud.dat 1 16 -30 0 10 1 0 0 0 1 0 0 0 1 stud.dat 1 16 30 0 -10 1 0 0 0 1 0 0 0 1 stud.dat 1 16 10 0 -10 1 0 0 0 1 0 0 0 1 stud.dat 1 16 -10 0 -10 1 0 0 0 1 0 0 0 1 stud.dat 1 16 -30 0 -10 1 0 0 0 1 0 0 0 1 stud.dat 0 TUBES 1 16 20 4 0 1 0 0 0 -5 0 0 0 1 stud4.dat 1 16 0 4 0 1 0 0 0 -5 0 0 0 1 stud4.dat 1 16 -20 4 0 1 0 0 0 -5 0 0 0 1 stud4.dat 4 16 40 24 20 36 24 16 -36… 4 16 -40 24 20 -36 24… 4 16 -40 24 -20 -3 … 4 16 40 24 -20 … 0 Stud 0 Name: stud.dat 1 16 0 -4 0 6 0 0 0 1 0 0 0 6 4-4disc.dat 1 16 0 0 0 6 0 0 0 1 0 0 0 6 4-4edge.dat 1 16 0 -4 0 6 0 0 0 1 0 0 0 6 4-4edge.dat 1 16 0 0 0 6 0 0 0 -4 0 0 0 6 4-4cyli.dat Brickvention 2006

  13. Editing ModelsMLCad • Easy to use, drag ‘n’ drop • Advanced editing functions • Uses standard Ldraw parts library • Windows Only Brickvention 2006

  14. Editing ModelsLeoCad • Multi-platform (Windows, Linux) • Advanced editing functions • Uses custom database which is generated from Ldraw parts library Brickvention 2006

  15. Editing ModelsLEGO Digital Designer • Multi-platform (Windows, Mac) • Simple editing functions • Uses custom library – limited parts selection • Convert to / from Ldraw files Brickvention 2006

  16. Building Instructions • Edge Line Detection (MegaPOV, ldglite) • Advanced Scripting Commands (MLCad) • Batch Rendering and Page Layout (LPub) Brickvention 2006

  17. The Future of Virtual LEGO • New Language Specs • Collision Detection • Flexible Element Support • Animation Support • Your project? Brickvention 2006

  18. Artistic Accomplishments Brickvention 2006

  19. Li’l Dumper by Ross Crawford Brickvention 2006

  20. Trike by Allister McLaren Brickvention 2006

  21. Spider Mech type A by Timothy Gould Brickvention 2006

  22. Needs and Opportunities • Developers and Students • Write cool software; modelers, converters • Contribute to the language specs • Designers and Writers • Help improve LDraw.org • Graphic design • Articles • Educators • Apply the tools in the classroom Brickvention 2006

  23. Thank You Any Questions? Please feel free to follow up by email: ross.crawford@gmail.com Or visit http://www.ldraw.org Brickvention 2006

More Related