The Complete OBJ to VRML Conversion Guide.
Table of Contents
- General Information
- Converting and Optimizing OBJ Files to VRML
- What are OBJ and VRML files commonly used for?
- Comparison of Features Supported by OBJ and VRML
- Limitations of OBJ Files to VRML Conversion Workflow
- What's the best way to get OBJ files into my 3D applications, and are there alternatives to using VRML?
General Information
This guide is part of the RapidPipeline 3D Formats Knowledge Database. It shows how to convert OBJ to VRML, if you'd like to know more about the formats, please check out the following links:
Converting and Optimizing OBJ Files to VRML
There are various ways to convert between OBJ and VRML. With RapidPipeline, you can easily convert and and optimize OBJ files, at scale. It supports VRML, as well as many other file formats (examples: FBX, glTF, PLY, STL, USD, USDZ, VRM), at high quality.
Below you can find a video explaining how to convert your files:
Comparison of Features Supported by OBJ and VRML
| Feature | Supported by OBJ | Supported by VRML |
|---|---|---|
| Morph Targets | No | Partial0 |
| Rigid Animations | No | Yes |
| Skinned Animations | No | No |
| Animations | No | Yes |
| Free-Form Surfaces | No | Partial1 |
| Geometry Compression | No | No |
| Quad Meshes | Yes | Partial2 |
| Basic 3D Geometry | Yes | Yes |
| PBR Materials | Partial | No |
| Transparent Materials | Yes | Yes |
| Vertex Colors | No | Yes |
| Materials | Yes | Yes |
| Scene Composition | No | Yes |
| Hierarchical Scene Graph | No | Yes |
| Scene Nodes | Yes | Yes |
| Standardized Format | Partial3 | Yes |
| Embedded Textures | No | No |
| Multiple UV Channels | No | Partial4 |
| Normal Mapping | Partial | No |
| Procedural Textures | No | Partial5 |
| Texture Compression | No | No |
| Texture Transforms | No | Yes |
| Texturing | Yes | Yes |
Limitations of OBJ Files to VRML Conversion Workflow
The following limitations should be taken into account when converting OBJ files to VRML format:
| OBJ Feature (not supported by VRML) | Limitation Details |
|---|---|
| Quad Meshes | Quad Meshes Support: OBJ: Full support | VRML: Partial support   VRML Notes: Primarily triangle-based with some quad support Impact: Quad meshes are a common way to hand-model and edit 3D models. 3D artists get intuitive control and such meshes are also easy to refine, as well as well-suited for creation of skinned animations. However, real-time rendering pipelines and hardware are usually all based on triangles, so if a 3D model should not be edited any more, it is safe to convert quads to triangles (and engines will do this automatically before sending data to the rendering hardware). In this example, a part of a mesh is modeled with quads. Without support for this feature, quads will have to be triangulated, producing a pure triangle mesh. |
| Normal Mapping | Normal Mapping Support: OBJ: Partial support | VRML: No support   Impact: Normal maps are used to model shading differences that are arising from small geometric details on a surface, such as fabric structures, visible gaps between bricks forming a wall, or rough rock surfaces. In this example, a normal map is used to model a fabric structure. Without support for this feature, the rendered fabric will look smoother than it actually is in the real world, as the fabric structure won't be visible. |
| PBR Materials | PBR Materials Support: OBJ: Partial support | VRML: No support   Impact: PBR materials enable Physically-Based-Rendering (PBR) for a standardized, photorealistic look of rendered images. PBR uses concepts like metallic-roughness or specular-glossiness properties and a microfacet-based modeling of the surface, using a concept called BRDF (Bi-Directional Reflectance Distribution Function). In this example, PBR materials are used to achieve realistic looking plastic and metal materials. Without support for PBR materials, only basic colors and shading can be used (for example, based on more simple shading models, such as the Blinn/Phong model). |
What's the best way to get OBJ files into my 3D applications, and are there alternatives to using VRML?
Doing 3D conversion right, especially at scale, can be tricky, as 3D data is in general a rather complex (yet very powerful!) medium. This also applies to OBJ and VRML files - the conversion guide above provides a rough first idea about that. Once you know what you would like to do, tools like RapidPipeline can help you perform the necessary steps, and to even automate the process for thousands or even millions of files.
Especially when introducing pipelines and workflows at scale in an enterprise context, it is usually good to rely on dedicated tools and expertise, making sure you do not introduce any steps into your 3D workflow that are detrimental to the final output's quality, or that take your team too much time (and money).
If you're interested to hire dedicated expertise from the best in the field to help your company reach your goals fast and reliably, please do not hestitate to contact DGG. Being the creators of RapidPipeline, and ambassadors for open 3D standards for more than a decade, we have been building some of the world's most advanced 3D pipelines, having processed many millions of 3D assets.
Therefore, our expertise will help you to reach your goals faster, at scale, and with the least possible friction, since we are focused on maximum interoperability.
To get started with 3D data conversion and optimization today, sign up for a free account!
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