When zSolver.maxNewtonIterations is greater than 1, the dynamics were often under-damped. The dynamics are correctly damped now, which will result in some simulations appearing more damped than before. To recover similar results to previous versions, decrease zSolver.stiffnessDamping and zSolver.massDamping – possibly to the new default values: 0.001 and 0.0 respectively. This
Maya 2018 Speed Notice:
Maya 2018 has a performance bug causing meshes, that normally take a few milliseconds to process in Maya 2016, to take multiple seconds in Maya 2018. This is independent of Ziva's plugin and can easily be triggered entirely with built-in deformers.
If you're using more than 1 simulation substep per frame (zSolver.substeps > 1), then this Maya problem may be triggered and can significantly slow down everything.
The workaround is to set Maya to playback at the same rate as the solver substeps. For example, if zSolver.substeps = 4, then set "Playback by" in the Time Slider preferences to be 0.25 = 1/4 to match.
Damping tip for Ziva VFX v1.4 users
Having speed issues in Maya 2018?
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ZIVA VFX – Film Production
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Character alterations can be applied retroactively at nearly anytime. Simply adapting the underlying anatomy of your characters will allow you to react faster.
Muscles preserve volume under force and collision, and the tissue will bend, stretch, crease and jiggle with the realism audiences and experts expect.
ZIVA VFX lets you improve fidelity, modify appearances, and shift art direction while still preserving the character essentials. Never start from scratch again.
"It is the best muscle plugin we've found. It brings extra realism to our creatures via physically plausible muscle FX. It is a great improvement to have Ziva integrated into our workflow."
"Ziva was instrumental in helping Sony create the most realistic muscle and skin simulations for our CG characters to date. Ziva's outstanding results speak for themselves."
“Ziva’s FEM muscle and skin simulation was the last piece of the puzzle we'd been longing for to achieve realistic looking, physically plausible Creature FX.”
build characters with physics
With ZIVA VFX, virtual characters move, flex, stretch, and jiggle the way audiences expect. Our high-fidelity FEM Anatomy Simulation technology lets you accurately simulate solid objects with complex material properties.
All attributes computed with consideration to the embedded surface, simplifying the creation of tetrahedral models.
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The Ziva VFX Indie Licenses let you create anatomical, industry-leading characters for your independent projects and productions. Our full spectrum of Ziva VFX tools in Maya let you replicate real world physics, biology, and kinesiology for top-quality results.
You can try a free Ziva VFX Evaluation license for 60 days.
Cache simulations to RAM or disk for fast playback and/or restarting
Exactly preserve volume, even under large deformations
Script and pipeline your rig using Maya MEL, or using our open-source Python tools
+ Software requirements
Maya 2016, 2016.5, 2017, 2018, or 2019
Windows 7 (or higher), or Linux
+ Use Cases
Anatomically realistic character animation, including: – Anatomically accurate bending of the skin at the joints – Correct hand pronation-supination – Correct neck shape with precise neck muscle movement – Correct upper-body rigidity under twisting – Correct thigh skin shape due to quadriceps muscle excitation – High-quality belly fat secondary motion (inertia and gravity) – Correct elbow self-collisions
Cartoon/feature character animation with simple, single-simulation-mesh anatomy or complex, hyper-realistic anatomy.
Enrich existing baked animations with controllable and tuneable secondary physically based motion.
Modelling tool for reducing stretch and volume-change in sculpts.
Make and simulate arbitrary elastic objects undergoing collisions and self-collisions, from gel to plants to steel-beam bridges.
Ziva VFX software runs on any Maya 2016-2020 compatible workstation.
Software requirements are as followed:
Microsoft® Windows® 7 (SP1), Windows® 8.1 or Windows® 10 Pro OS
Red Hat® Enterprise Linux® 6.5 WS OS (and up)
CentOS 6.5 Linux operating system (and up)
Hardware requirements are as followed:
64-bit Intel® or AMD® multi-core processor
Minimum RAM: 4 GB of RAM (16 GB or more recommended)
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