How to convert FBX
to Parasolid?

The FBX format, also known as FilmBox, is a flexible file format that finds extensive use in the entertainment industry for storing 3D models, animations, and associated digital assets. Created by Autodesk, it is commonly employed in video games, movies, and VR applications. FBX files act as comprehensive repositories, preserving essential details such as 3D shapes, textures, animations, and more.

Support of FBX in CAD Exchanger

CAD Exchanger can import any FBX files and export FBX files of version 7.2, 7.4, and 7.5 in Binary and ASCII format. Such support includes:

• polygonal representations;
• assembly structure;
• names;
• colors, materials, textures.

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Pros of the format

Versatility and Compatibility

One of the major advantages of this format is its versatility and compatibility. FBX files can be easily shared and utilized across various softwares, making it convenient for collaboration between designers and game developers. FBX guarantees effortless transfer and utilization of 3D models and animations across diverse software environments.

Comprehensive Data Storage

FBX files store a wide range of information related to 3D assets, providing a comprehensive solution for content creators. This format allows you to store geometry, textures, animations, lighting, materials, and more in a single file. This comprehensive data storage capability simplifies asset management, ensuring that all the necessary components are packaged together and can be easily accessed or modified as needed.

Cons of the format

Proprietary Format

One of the drawbacks of FBX is that it is a proprietary file format owned by Autodesk. This means that the specifications of the format are not publicly available, making it more challenging for third-party developers to create software that fully supports FBX. While Autodesk provides an SDK for FBX, the closed nature of the format can sometimes limit interoperability with certain software applications.

Large File Sizes

FBX files can sometimes be quite large, especially when they contain complex geometry, high-resolution textures, or numerous animations. This can pose challenges when it comes to file storage and transfer, particularly for projects with limited bandwidth or storage capacity. Files may require additional time and resources for processing, potentially impacting workflow efficiency.

FAQ

Is FBX format specification publicly available?

While the complete specification is not publicly available, Autodesk provides an SDK Programmer's Guide that allows developers to work with FBX files and access the necessary information.

What are .fbx file extensions?

This file format itself does not require any specific sub-extensions, as the ".fbx" extension alone is sufficient to identify the file as an FBX file.

How to open an .fbx file?

To open this file, you will need a compatible software application, for example, CAD Exchanger Lab. Launch the software and navigate to the 'New file' option. Browse your computer's directories and locate the .fbx file you want to open. Then select it and click "Open". Once the import process is complete, the .obj file should be loaded into the software, allowing you to view and interact with the 3D model and associated data.

History of FBX format

FBX was initially developed by Kaydara, a Canadian software company, in the late 1990s. The purpose behind creating FBX was to provide a universal file format that could facilitate the exchange of 3D content.

In 2006, Autodesk, a leading software company, acquired Kaydara and took ownership of this format. Autodesk continued to develop and enhance this format, expanding its capabilities and compatibility with their various software applications such as Autodesk Maya and MotionBuilder. With Autodesk's support and resources, FBX gained even more traction and became widely adopted in the industry.

Throughout its evolution, FBX has expanded its capabilities to encompass an extensive array of features. These include geometry, textures, animations, cameras, lights, materials, and more. As a result, it has emerged as a widely accepted format for exchanging 3D assets, not just within Autodesk software, but also across diverse software applications from different vendors.

Parasolid file format is native for Parasolid geometrical kernel, a widely used 3D geometric modeling kernel developed by Siemens PLM Software. This kernel provides a set of advanced tools and algorithms for creating, editing, and analyzing complex models. Like any kernel, Parasolid also has a persistence format known as Parasolid-XT. The Parasolid format refers to the file format used to store and exchange 3D geometry data created using Parasolid.

Support of Parasolid files in CAD Exchanger

CAD Exchanger can import files starting from v0.15 and up to v35 and export files from v12 to v35. Such support includes:

• B-Rep representations;
• assembly structure;
• names;
• user-defined properties;
• colors;
• layers.

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Pros of the format

Kernel nature

The primary advantage of Parasolid-XT lies in its kernel-based architecture. When you need to import data into CAD software running on the Parasolid kernel, opting for this format is a wise decision. As a kernel format, Parasolid-XT excels in its handling of B-Rep geometry, demonstrating exceptional proficiency in storing intricate B-Rep models encompassing solids, sheets, wireframes, mixed components, and even non-manifold topologies.

A notable advantage over the ACIS-SAT format is its capacity to represent the model hierarchy, albeit with some limitations (parts and bodies are somewhat synonymous). Nevertheless, in essence, the conversion to Parasolid-XT has the potential to preserve your part-assembly hierarchies, adding to its appeal as a preferred choice.

Representation of hybrid models

Another notable capability is the endorsement of hybrid models, specifically those in which a single logical component encompasses both B-Rep and mesh geometry. While this scenario currently represents a relatively small portion of real-world data exchange, it's gaining popularity. Consequently, the Parasolid kernel has been actively advancing to embrace these models, with the most recent iterations of the Parasolid-XT format designed to handle them.

Cons of the format

Proprietary nature

Parasolid is a proprietary format owned and developed by Siemens PLM Software. This means that the specifications of the format are not publicly available, and only licensed software developers can fully access and utilize the features of Parasolid. While many CAD software applications support the import and export of Parasolid files, the lack of public specifications can limit the ability to develop custom tools or work with the format outside of the licensed software ecosystem.

The lack of extensive metadata and visual attributes support

Parasolid-XT offers some support for metadata and visual attributes, including the ability to name entities, assign colors to shapes, utilize layers, and user-defined properties as key-value pairs. However, if you're dealing with multi-body parts, PMI, or advanced metadata, it might be more beneficial to consider using alternative formats like STEP or JT. These formats provide more extensive support for those specific requirements.

FAQ

What are the benefits of using Parasolid format?

The Parasolid format offers exceptional interoperability, and precise B-rep modeling ensures high geometric accuracy, making it suitable for complex engineering and design tasks. Its wide industry adoption makes it a trusted and standardized format, ensuring compatibility and long-term support.

Which industries use Parasolid format?

The Parasolid format finds extensive use in various industries due to its versatility and precision. Industries such as aerospace, automotive, manufacturing, consumer electronics, and medical devices all rely on Parasolid for 3D modeling and design. Its broad adoption across these sectors facilitates the development of everything from aircraft components and automotive designs to medical implants.

What are the primary Parasolid file extensions?

In Parasolid, two primary file extensions are commonly used. The first one is .x_t (Parasolid Text), which represents a text-based format. It stores 3D geometric data in a text format, allowing for easy interoperability between different CAD systems. The second extension is .x_b (Parasolid Binary), which represents a binary format. .x_b files contain the same geometric information as .x_t files but in a more compact and faster-to-process binary format.

History of Parasolid format

The Parasolid format, as a file format for storing 3D geometry, has its own history. Developed by Shape Data Limited in the 1980s, the Parasolid format was designed to enable the exchange of 3D solid models between different CAD systems.

In 1996, the company was acquired by Unigraphics Solutions Inc., which eventually became part of Siemens PLM Software. Since then, Parasolid has continued to evolve and adapt, keeping up with the ever-changing demands of the CAD industry.

With its powerful capabilities and efficient representation of 3D geometry, Parasolid quickly became a standard format for CAD software developers. Its widespread acceptance can be attributed to its seamless interoperability. Many leading CAD software applications, including Siemens NX, Solid Edge, and SolidWorks, incorporate Parasolid as their underlying kernel, allowing users to create, modify, and exchange complex 3D models with ease.

Over the years, Parasolid has played a vital role in various industries, such as automotive, aerospace, and consumer goods. Its precision and accuracy have made it an indispensable tool for designers and engineers, enabling them to tackle intricate designs and perform detailed analyses. Today, Parasolid remains a cornerstone in the CAD landscape, empowering professionals to bring their creative ideas to life in the virtual world.