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Editor view and render not matching….dynamics
I am working a scene which has swinging chains colliding with solids bodies. All using Mograph rigid body tools. The animation is working great. Problem comes at render time. Some of the solid bodies move differently to the preview seen in the editor.
I have tried caching, but there are a couple of problems with that technique. First, the caching will almost always change the animation slightly, and secondly I have a number of cloners. Some of the rigid body tags will produce a cache and some don’t. Don’t understand exactly why. I have also ran into dud frames with cache.
Caching is useful for giving back realtime feedback, or allows for accurate scrubbing of the dynamics animation in the editor. It does not help that much in the render so no big deal. But should be able to rely on the playback in the editor with or without caching matching up to my renders.
Anyway to insure that the match is accurate?
Thanks
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14 Replies
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hey russ, i’ve been having the same problem with the mograph dynamics/rigid body tag renders either not matching positions of the playback or the cache versions being different or not actually playing back at all. mine are simple mograph dynamics falling type, hitting floor and bouncing to a repeatable configuration. wish someone had some help on this one. let me know if you figure something out.
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haven’t been able to try it yet but found this method of baking mograph/dynamics to keyframes which might be helpful:
https://forums.cgsociety.org/showpost.php?p=6107418&postcount=8 -
Ronaldo,
Thanks for the update. Still hoping to hear from anyone who can shed more light on this topic. Would have thought it to be pretty importatant.
Russ
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I’m having the same problem. Anyone who can shed some light on this would certainly be appreciated!
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Also having this problem of the dynamics changing with some falling text that I have. I have two words, one landing on of the other. The preview looks fine, as in the two words stack on each other and stay there. But once I render, the top word falls to the floor. Tried using Mograph cache tag, and it actually made it worse?
Any head way on this problem?
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Can’t add any ideas but just wanted to add that I am having the exact same problem as Ryan — one level of text falls on another and it doesn’t match in the viewer and the render. Have tried caching etc. Would love to hear if anyone has found a solution! (I’m using r11.5)
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Hi guys,
I have found this problem and found that you need to make sure your render setting match you project settings.Hope this helps
Leon
https://www.digitalelements.tv -
Ctrl-D to pull up dynamics settings in project, go expert> change steps per frame to get as close to FPS that your pc allows. Might also try decreasing/increasing collison margin.
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Hi,
You need do The CTRL+D to bring up the Project Setting and go into the Dynamics Tab. In there hit the CLEAR CACHE and then hit BAKE. A status bar will pop up and once done the dynamics will be baked in place in real time. You can now scrub through, move cameras around and what you now see through the chosen camera will be exactly what renders.
Dynamics take a lot of calculating so you can’t just scrub through without baking as it’s just giving an approximation of the dynamics.
I was doing this with a mug dropping to the floor and smashing and it was doing exactly the same thing until I baked the dynamics.Cheers
Oly -
I had the same issue and I fixed it by giving the same value to Subdivision Editor and Subdivision Renderer in the object properties of the hypernurbs.
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