Fix FBX Bone Deformation Bug

@CreativeDesign50

Hi, We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on C Programming, 3D Rendering, Animation, C++ Programming, 3D Modelling, 3D Animation, Unity 3D, OpenGL Please come over chat and discuss your requirement in a detailed way. Regards

@sahildogra222

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@itswahabahmad

As a Unity Game Developer with a solid grounding in C# coding and experience with the FBX format, I am more than equipped to address the bone deformation bug within your custom engine. Moreover, I possess a deep understanding of handling issues related to bind-pose extraction, matrix order, handedness, and scale compensation compatibility. Working with C# and OpenGL is second nature to me and I am confident my skills will prove invaluable throughout the diagnosis and resolution process. My unique blend of 5 years of Unity game development proficiency alongside a comprehensive grasp of VR/AR will come in handy as I seek to provide impeccable fixes for your rigged character's animations. Notably, I prioritize maintaining exemplary performance without compromising on existing features—this includes ensuring your patch compiles cleanly across different environments. Additionally, detailed documentation accompanies every line of code that I write -so it'll be easy for you to understand and maintain my fix in the future. My commitment to excellence paired with my proven track record and passion for innovation makes me the ideal candidate. Let’s embark on this adventure together where we can make your character FBX shine consistently and impeccably regardless of the platform or engine it operates in. Let’s chat more about what we can create together!

@Noahmuiruri

Having written a core c++ tool i can relate to the issues you are experiencing i can help you debug the file and see what's causing the issue, Contact me so we can discuss in details, i will help you fix then recompile it

@umaranimators

Hello there! I understand the challenges outlined in your project "Fix FBX Bone Deformation Bug" where bone transformations within your custom engine are causing issues. Leveraging my expertise in C and OpenGL, I am well-equipped to address this issue effectively. My experience in handling similar projects involving FBX quirks and bone deformations positions me as a suitable candidate for this task. By diagnosing the root cause and implementing precise fixes in the loader/animator code, I ensure a seamless playback of animations as per your requirements. To further validate my capabilities, I invite you to review my profile for project reviews and portfolio at: [Muhammad Umar's Profile](https://www.freelancer.com/u/umaranimators). I would love to discuss your project in more detail and collaborate on ideas for its success. Please let me know a convenient time to connect! Best Regards, Muhammad Umar

@toriquldev123

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@TheDesignBloke

Hi there, I’m excited about the opportunity to help you resolve the FBX bone deformation bug in your custom C engine. Your detailed project description shows you have a clear understanding of the issues, and I’m confident I can pinpoint the root causes efficiently. With experience in C, OpenGL, and animation pipelines, I’ll analyze the bone matrices to identify whether the problem stems from bind-pose extraction, incorrect matrix orders, or scale compensations. I’ll patch the relevant loader and animator code, ensuring your animations play flawlessly like the reference video. My process includes thorough in-code comments to help you maintain the changes moving forward. I anticipate a smooth integration to meet your acceptance criteria with no regressions. I’ll be ready to dive into your repo and sample assets as soon as we align on the next steps. Could you provide more details on any specific examples of bone transformations you’ve noticed? Thanks, Muskan

@jagjeetsinghram8

Hi, I’m Jagjeet Singh with 10+ years of development experience, including graphics and engine-level debugging. Your issue sounds like a classic FBX skeleton transform mismatch (bind pose / inverse bind / axis / scale). I can quickly diagnose and fix it. My approach • Verify bind-pose & inverse bind matrices from FBX vs engine • Check matrix order (FBX is typically TRS with pre/post rotations) • Validate coordinate system / handedness / unit scale conversion • Inspect bone hierarchy + global → local transform reconstruction • Fix skinning matrix build (offset * pose) and animation sampling What you’ll get : • Clean patch in your C / OpenGL loader + animator • Clear comments on every modified line • Short technical note explaining root cause & fix • Animations (walk/run/idle) playing correctly — no bone explosions • Builds clean in clang + MSVC (CMake) with no performance regression I’ve handled FBX quirks, inverse bind bugs, and axis/scale issues before, so this is straightforward for me. I can start immediately. Best regards, Jagjeet Singh

@rogelitoc

Hello, I appreciate the opportunity to assist with your character animation issue. It’s clear that you’re facing some intricate challenges with the bone transformations in your custom engine, and I understand the urgency of getting this resolved. With extensive experience in C programming and OpenGL, I have a solid background in animation systems and graphics rendering. My work has involved troubleshooting similar issues related to skeleton parsing and matrix transformations, ensuring that animations play smoothly in custom engines. To address your project needs, I would take the following approach: - Analyze the current bone matrix calculations to identify discrepancies in bind-pose extraction and matrix order. - Debug the loader and animator code to implement the necessary fixes, ensuring the animations match the reference video accurately. - Include comprehensive comments on each modification, along with a summary of the adjustments for your future reference. I am excited to help you resolve these issues and ensure your animations play flawlessly without regressions. I am confident in my ability to deliver quality results and can start immediately. Please let me know if you have any further questions or if you would like to discuss the project in more detail. Looking forward to your response!

@osamak74

Hello, I understand that you're facing issues with FBX bone deformation in your custom engine and that you need a reliable fix for your animations. It sounds like a complex challenge, but I have extensive experience diagnosing and correcting similar problems, particularly with bone transformations and file parsing in 3D engines. My previous work involved successfully debugging and optimizing animation routines, ensuring smooth character movements without deformation artifacts. ✅My Plan: - Thoroughly analyze the current bone matrix extraction and transformation process. - Identify potential issues in bind-pose extraction, matrix order, and scale compensation. - Patch the loader and animator code to ensure animations play flawlessly. - Provide detailed inline comments and documentation for each modification for future maintenance. I’d love to clarify your engine's loading process. Do you have any specific test cases that highlight the issues, or should I focus on the clips provided? Best regards, Hongqiang Chen

@Dmitrydev1

Hi there, I’ve read your FBX bone deformation issue end-to-end and I’m confident I can diagnose and patch the loader/animator so your walk, run, and idle clips behave exactly like the reference. I’ll start with a targeted diagnosis: verify bind-pose extraction, confirm matrix order and handedness, and ensure correct scale compensation across the import-and-skinning path. I’ll instrument the pipeline (C/OpenGL, Assimp, and our limited FBX-SDK usage) to reproduce the exact misbehaviors in a controlled test scene, then implement a minimal, well-documented fix that aligns the bone matrices with the reference. I’ll cover all three clips in both debug and release builds and keep the skinning performance steady. What you’ll get: • Clear diagnosis notes and a focused patch that fixes the bone transformation pipeline • Inline comments on every line touched and a concise note explaining the fix for future maintenance • A clean, clang and MSVC-2022 compatible patch within your CMake project Next step: I can begin after you share the repo and sample assets; I’ll provide a short diagnostic plan within 1 day and a first patch pass within 2-3 days, depending on the findings. Best regards,

@daxm0

Hello Bryce, I'm Dax Manning, an experienced C Programmer with over 8 years of expertise in handling complex programming challenges. I have a solid understanding of C-based custom engines and OpenGL, making me well-equipped to tackle the bone deformation bug in your FBX files. I have carefully reviewed your project requirements and am confident in my ability to pinpoint the root cause of the bone deformation issue within your engine. I will work diligently to patch the loader and animator code to ensure that the FBX files play seamlessly without any glitches. Additionally, I will provide detailed comments on the code changes for easy maintenance in the future. Let's discuss the project further in the chat to align our strategies and ensure a successful resolution to the problem. Thanks, Dax Manning

@venplura

Hi there! Have you checked if your engine’s matrix multiplication order matches the FBX coordinate system conventions to avoid handedness issues? Regardless, this is definitely something that I feel confident delivering on, given my past experience. I would love to discuss your project further! Looking forward hearing from you. Kind Regards, Corné