Important Looking Pirates (ILP) visual effects supervisor Pietro Ponti explained about the rigging of Rexy and Blue; "The rigging of the T-Rex and Blue started out of the basic rig that Industrial Light & Magic provided for us, but we then had to adapt them and re-work them all for our needs to fit them into our pipeline. Especially the blend shapes and the muscle rig and system were something we worked on for quite some time, always improving all the different details, tailored to our needs specific for the sequences we worked on. Adrian Tsang and Gustav Ahren on our team did a fantastic job in recreating the look and motion ranges from the references we received from Industrial Light & Magic, necessary for our shots. Their collaboration with our animation supervisor Nicklas Andersson, helped us achieve something we are really proud of. The muscle system was a mixture of a muscle rig that Gustav developed and some skin simulations achieved partly in Ncloth and partly in Houdini's Carbon plugin. Animation-wise, Nicklas had daily reviews with all of his team where they went through every shot to keep behaviour and key poses consistent across the sequences. That way the T-Rex and Blue had their basis consistent throughout, and specific detailed animations per shot were built on top of that. Once production started ramping up, Nicklas started having weekly catch-ups with Industrial Light & Magic animation director Jance Rubinchik, who helped us to quickly achieve the vision from the creatives. That said, we also had a certain degree of freedom and creativity, especially on some of the full CGI shots in the tug of war between the helicopter and the T-Rex, where we helped designed the look of the final shots."

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