Hvad er BBMODEL-filformatet?
En .bbmodel-fil er det oprindelige projektformat for Blockbench, en gratis 3D-model-editor skabt af udvikleren JannisX11 og først udgivet i 2017. Blockbench bruges mest til low-poly modeller med pixel-art teksturer, og det er standardværktøjet til at bygge brugerdefinerede modeller til Minecraft. Mojang Studios støtter udviklingen, og kildekoden er åben under GPL-3.0-licensen.
Filen er JSON-tekst, så den er læsbar for mennesker, men det er ikke et generelt udvekslingsformat. Den indeholder den fulde projekttilstand: geometrielementer som kasser og meshes, gruppe- og outliner-hierarkiet, der definerer knoglestrukturen, teksturreferencer eller indlejrede billeder, animationer, animations-controllere og visningstransformationer. Teksturer kan indlejres direkte som Base64 data:image/png;base64 URL'er eller linkes via filsti. Hver fil registrerer en meta.format_version, som er nået til 5.0, med væsentlige ændringer i 4.9, 4.10 og 5.0. Nogle projekter er LZUTF8-komprimerede og starter med en bogstavelig <lz>-markør i stedet for en JSON-parentes.
Sikkerhed og tryghed
RISIKO: LOWA .bbmodel is JSON text describing geometry and textures, not executable code, so opening one does not run anything. The main caution is that embedded Base64 textures can make files large, and hand-editing the JSON can corrupt the project. Only open files from sources you trust and keep Blockbench updated.
Formatdetaljer
kort fortaltProgrammer der åbner BBMODEL-filer
Windows2 apps
Blockbench (Desktop)
Open-source Install the desktop app, then choose File > Open to load and edit the .bbmodel project with full 3D preview, texturing and animation. 
Visual Studio Code
Gratis Open the .bbmodel file as text to inspect or hand-edit the raw JSON structure (works only for uncompressed files). 
macOS2 apps
Blockbench (Desktop)
Open-source Launch Blockbench and open the .bbmodel project to view and edit geometry, textures and animations. 
Linux2 apps
Blockbench (Desktop)
Open-source Run the AppImage or installed build and open the .bbmodel project for editing.
gedit / any text editor
Open-source Open an uncompressed .bbmodel to read or edit its JSON directly.
Blockbench Web App
Open-source Open web.blockbench.net in a browser and load the .bbmodel with no installation needed. Tekniske detaljer
dyb specifikation| Encoding | UTF-8 JSON text; optionally LZUTF8-compressed with a leading <lz> ASCII marker |
| Byte order | N/A (text) |
| Container | Single JSON object |
| Compression | Optional LZUTF8 (Blockbench setting). Compressed payloads are prefixed with the literal string <lz> |
| Typical size | A few KB to several MB, depending on embedded Base64 textures and animation data |
| Structure | Top-level JSON object with meta (format_version, model_format, box_uv, backup flags), resolution (texture width/height), elements (cubes, meshes, locators with positions, rotations and UV data), groups and outliner (bone hierarchy / scene tree), textures (metadata plus optional embedded data URLs or file paths), animations, animation_controllers, display (item/block display transforms), and optionally editor_state and history (undo stack). |
| Platforms | Windows, macOS, Linux, Web |
| Notes | There is no complete published specification of the JSON schema. The format carries a version field and has had breaking changes at versions 4.9, 4.10 and 5.0. Blockbench itself recommends a custom plugin format rather than parsing bbmodel directly for external loaders. Textures may be stored embedded as data:image/png;base64 URLs or referenced by absolute/relative path. |
| Model Format | The meta.model_format field records the project type: Java Block/Item, Bedrock Entity, Generic (Free), Skin, and others |
| Udgivet | 2017 (Blockbench 1.0, May 5 2017) |
| Seneste version | Format version 5.0 |
| Specifikation | www.blockbench.net |
BBMODEL-konverteringer
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