Cineversity

Hi Dr. Sassi, long time!-if you don’t mind, can you please ( since I forgot; ) ) direct me to the proper video to show how I can substitute a large poly object with a lower poly proxy object in a cloner object? there are many videos here and I am not clear as to which one (s) to view, thank you for your time, Best, Craig

Hi Craig,

I have attached three different way how I could think to do it.
https://www.amazon.com/clouddrive/share/sxPq1MfGsC7eQJtx6R2MrR92RYEXeFEhhrTKdHxXvh0?ref_=cd_ph_share_link_copy

The first one just uses a Plain Effector to “Parameter>Others>Modify Clone” with the Cloner Object set to sort. Just switch the Plain Effector off for the full resolution.

The second one uses an X-Ref Object, and there is the only option (AFAIK) in Cinema 4D to use a Proxy.

The Third one Is not really switching, it just reduces the Level of Detail. For that—click on the Tag and adjust to your liking. (Level of detail can be done scene wide as well - without Tag)

There are certainly more options to do that, please let me know if you need something else.

All the best

Hi Dr. Sassi, thank you so much-now that you’ve shown me, it does seem pretty easy —in your opinion,:
1. which is most efficient to use ?
2. when you use the cube, you are referencing the same cube for the first and second example?
3.regarding the first solution, is the process this: bake the simulation with the proxy ( cube), then turn off the plain effector and use the higher poly model to render?
4. about the “lowering of detail option, is this as efficient as the first choice,?, which I like

if you have other options which are more common, and it doesn’t take up too much time, would love to see, thank you!

Hi Craig,

Which is the most efficient to use, well, it depends on your scene. Sorry, there is no general answer to that AFAIK. Some options are even not available to all.
One could aim at fps refresh rate and someone else how fast a preview proxy renders, perhaps equal in ratio, perhaps not at all. There are too many variables.

The Display Level Of Detail works only with primitives or generated objects (Sweep, Lathe, etc), not with polygon based object. Have a look at Editor View> Options>Level of detail.

The cube from the Cube.c4d file is only referenced in the XRef.

Yes, the bake or better “cache” option will always help. Please note that the object was here a cube, but it should match the “silhouette”/shape if used for example with dynamic based scenes.

Alternative to this would be the Detail Tag again, but here set to Style: Box.

If the hi-res object is in many “set ups”, sometimes the use of Instances can help. The original is placed under a Null made Invisible edit/render, and the instance looks only to the object. So one can easily exchange that.

So, in the next file on the left, the selection object re-selects all the Instances and an easy swap out the object can be done.

The second (middle) set up uses the Box option, very fast.

The right sided uses XPresso to switch. Click one time on the XPresso tag and go to the Attribute Manager>User Data.

Besides that, the option to create informations in the view port certainly have changed over the years. based on your CPU the amount of data is highly dependent on the power of those cards. But also here, everything has a limit. The more data needs to be “digested” to be visible, the more work needs to be done. In some cases, this will slow down things.

To work efficiently in segment and polygon amount goes without saying. To sort things on layers and switch part off while not needed is certainly a good idea.

Perhaps to keep four windows open when you really only work in two might help as well.

All the best

https://www.amazon.com/clouddrive/share/fWaP36Y5cjZt8LOAnoFpIblSqRHZcILIyoWBfoPlg01?ref_=cd_ph_share_link_copy

thank you, these are brilliant, and I appreciate it-BTW, with the clever use of the Xpresso switch, why is the “proxy” highlighted with yellow to reveal the figures, when it would seem the it should be highlighted for the lower poly cylinder?, thx

You’re welcome, Craig.

Well this happens because I forgot to check it. Please reload (I updated the link above) and learn from my mistakes

Seriously, (Inside of the XPresso Editor) the Input wires of the two objects need to be swapped (Condition Node). Just click and hold on the Input and drag it to the other one. The wires should be crossed then, and the set up should work properly.

Sorry about that.

BTW, render the view, and the spheres show up, as the display Tag for the center/middle scene is only in view mode active, not for render AFAIK.

All the best

P.S.:

Perhaps more comfortable—see User Data.

https://www.amazon.com/clouddrive/share/V2gDvZsw8aReCSUnZmwZPY2DrCrtlcYfueiTzEY09he?ref_=cd_ph_share_link_copy

Enjoy

Thank you, wow, you are so good to me, am I worthy,?, maybe, stay well, my friend, CZ

Hi Craig,

I hope you enjoy your project.

Every question in this forum will hopefully help others as well. So, thanks to you for the question.

Let me know if there is anything else.

Stay well as well!

Hi Dr. Sassi, hope that your Christmas holiday was joyful. In the event that you are ” in” this week,  ; (, regarding your solutions to my “proxy ” project, I am having a challenging time implementing it with two or more objects/proxys. I went into the “manage user data” and I was not successful. Would you mind please, either showing me the way, or providing a small setup, a cloner w/Xpresso tag for full/proxy for two or more objects? thank you, as always in advance, Craig

Hi Craig,

Thanks, I hope you enjoyed the days.
(I got a bonus which allowed me to take a “Master Class” in film-making with Werner Herzog and soon one with Hans Zimmer about scoring :o) I love the holidays for that.)

Which scene-file are you referring to? The one with the two buttons?

Can you share a little set up with objects that are named full and proxy, so I can see where you are heading.

Or—

Perhaps this little clip gives a better base to discuss where a problem occurs. You can download it for better viewing experience. Which also allows to stop or go step by step along with the clip.
Did I demo’d the problem or do I missed it?

Movie clip (1min long)
[updated]
https://www.amazon.com/clouddrive/share/MUaXdT3m9fZ2dEjGfhtPzdriSn9ZYAuQ5Qxxtfr2PbR?ref_=cd_ph_share_link_copy

All the best

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Hi Dr. Sassi, and thanks, presuming that I uploaded my file properly, I have one model in the cloner, but, what if I want to add more, with their proxies? in this case, I’d like to add one more-I mention this in the annotation. If I am not clear, I am happy to explain further, thank you for your help and time, Craig

Hi Craig,

Thanks for the file. I have set up an example file with the Full/Proxy “double pair”. I used the file from the clip I shared yesterday.
Here is the example:
https://www.amazon.com/clouddrive/share/Hv9HSWnRLw5UKAXjcSC2hzPct7ugXd3JewCVf2imwVN?ref_=cd_ph_share_link_copy

In your example the lung had no Dynamic tag.

Please make certain that the axis and the shape of the proxy/full pair is equal. The cache will not place those in a congruent way if that is not a given.

I have cached the dynamic solution with the proxy, and tried “automatic” for the shape. Perhaps a “moving mesh” would have been nicer, and calculated with the full model. But yes that takes a while.

All the best

Hi Dr. Sassi, this looks great, thank you. Yes, I accidentally removed the dynamics tag from the lung. BTW, when you say"axis tag of proxy/full pair should be equal, you are referring to the direction that each, proxy, and full version, face the same way,?, thank you for your outstanding problem solving!!, Craig

You’re welcome, Craig.

The axis is shown under the “Place axis and model” Null Object. I placed both models on top of each other or in other words, they share the same axis position, just as an example.

Since the Matrix is stored in the cache and not the shape, if you cache the dynamic with the proxy and render with the full version later, it might look different.
Have a look here:
https://www.amazon.com/clouddrive/share/UxsIi5mLmvDmIDT8WxgxUhihvk0AZOGV6AZGITlZ93f?ref_=cd_ph_share_link_copy

Since the models are not 100% the same, a quick move of one of the axis while in Axis Modification mode (on the left: in the tools) will help you to match it.

All the best

yes, I see, thank you for the enlightenment!-stay well, Craig