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Tracked 3D camera gets into geometry while flying through te

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idovidal

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Tracked 3D camera gets into geometry while flying through te

PostSun May 04, 2025 8:50 pm

Hi
I have recently tried to create fly through text in fusion but when the camera gets closer to the text i see as if it gets into the geometry of the text instead flying through it.
this doesn't happen if i just a put a normal 3D text with a normal 3D camera.

how can this be fixed?

https://imgur.com/a/J4JsvUn
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Sander de Regt

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Re: Tracked 3D camera gets into geometry while flying throug

PostSun May 04, 2025 9:04 pm

Most likely this has to do with the scale of the world and the clip start of the 3Dcamera. Just for the fun of it, you should put a Transform3D as the last node before the Renderer3D and set the scale to say 10 or so and see if it makes a difference. (if not there's a bit of troubleshooting to be done)
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idovidal

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Re: Tracked 3D camera gets into geometry while flying throug

PostSun May 04, 2025 10:04 pm

Sander de Regt wrote:Most likely this has to do with the scale of the world and the clip start of the 3Dcamera. Just for the fun of it, you should put a Transform3D as the last node before the Renderer3D and set the scale to say 10 or so and see if it makes a difference. (if not there's a bit of troubleshooting to be done)


well i cant use normal render 3D after the camera output node. but when i play with the size of the text and rest it back to 1. this doesn't happen. regardless it shouldn't happen at all no matter what kind of changes you make
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idovidal

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Re: Tracked 3D camera gets into geometry while flying throug

PostSun May 04, 2025 10:25 pm

idovidal wrote:
Sander de Regt wrote:Most likely this has to do with the scale of the world and the clip start of the 3Dcamera. Just for the fun of it, you should put a Transform3D as the last node before the Renderer3D and set the scale to say 10 or so and see if it makes a difference. (if not there's a bit of troubleshooting to be done)


well i cant use normal render 3D after the camera output node. but when i play with the size of the text and rest it back to 1. this doesn't happen. regardless it shouldn't happen at all no matter what kind of changes you make


nope. it's actually doing it with a scale of 1.
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Sander de Regt

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Re: Tracked 3D camera gets into geometry while flying throug

PostMon May 05, 2025 7:20 am

well i cant use normal render 3D after the camera output node.

I meant scaling the whole scene. You didn't show your node setup so it was hard for me to tell you where to put the transform3D. Most likely you have Merge3D where your text, your camera and other stuff are combined, if you put a transform3D after that you will scale up the whole scene, but the camera clipping stays the same, thereby potentially solving the issue.
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idovidal

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Re: Tracked 3D camera gets into geometry while flying throug

PostMon May 05, 2025 8:33 pm

Sander de Regt wrote:
well i cant use normal render 3D after the camera output node.

I meant scaling the whole scene. You didn't show your node setup so it was hard for me to tell you where to put the transform3D. Most likely you have Merge3D where your text, your camera and other stuff are combined, if you put a transform3D after that you will scale up the whole scene, but the camera clipping stays the same, thereby potentially solving the issue.



it didn't work :/

https://imgur.com/4b4XNlO
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Sander de Regt

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Re: Tracked 3D camera gets into geometry while flying throug

PostMon May 05, 2025 8:38 pm

It has to be *after* the merge3d and before the renderer3d.

XF3d.jpg
XF3d.jpg (82.83 KiB) Viewed 1804 times
Sander de Regt

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idovidal

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Re: Tracked 3D camera gets into geometry while flying throug

PostMon May 05, 2025 9:05 pm

Sander de Regt wrote:It has to be *after* the merge3d and before the renderer3d.

XF3d.jpg


sorry my mistake. i have also tried it after the merge3d

https://imgur.com/a/x62cFf1
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Prophetless

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Re: Tracked 3D camera gets into geometry while flying throug

PostThu May 08, 2025 3:26 pm

What Sander said I would think should work, it definitely sounds like a scale issue. An approach I have taken before is going back to your camera tracker. Scale up the scene, to like maybe 5, in the camera tracker and update the export.

If you are still not getting the results you need, in the camera you just updated, unlock the camera and change the near clipping. The slider will go to .1, and if that is not enough you can type in a number. I think you can go as low as .05.
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idovidal

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Re: Tracked 3D camera gets into geometry while flying throug

PostSat May 10, 2025 1:06 pm

Prophetless wrote:What Sander said I would think should work, it definitely sounds like a scale issue. An approach I have taken before is going back to your camera tracker. Scale up the scene, to like maybe 5, in the camera tracker and update the export.

If you are still not getting the results you need, in the camera you just updated, unlock the camera and change the near clipping. The slider will go to .1, and if that is not enough you can type in a number. I think you can go as low as .05.


I appreaciate your help
i didn't manage to do it with your suggestions
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Prophetless

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Re: Tracked 3D camera gets into geometry while flying throug

PostSat May 10, 2025 2:51 pm

Sounds like something else is going on. Can you paste your comp in here so we can take a look? Don't need the media just the nodes to see what's going on.
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idovidal

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Re: Tracked 3D camera gets into geometry while flying throug

PostSat May 10, 2025 3:03 pm

Prophetless wrote:Sounds like something else is going on. Can you paste your comp in here so we can take a look? Don't need the media just the nodes to see what's going on.


i copied all the nodes except media in and media out and boy... that text file is like 64mb

https://we.tl/t-ELTF724cDe
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Sander de Regt

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Re: Tracked 3D camera gets into geometry while flying throug

PostSat May 10, 2025 4:06 pm

I am starting to think it might be your font. I don't have your font, but I chose 'Alef' to make something show up and it works flawlessly as far as I can tell.
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idovidal

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Re: Tracked 3D camera gets into geometry while flying throug

PostSat May 10, 2025 4:12 pm

Sander de Regt wrote:I am starting to think it might be your font. I don't have your font, but I chose 'Alef' to make something show up and it works flawlessly as far as I can tell.



I chose Alef as well but i still get the same result.
might be my gpu? i dunno
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Prophetless

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Re: Tracked 3D camera gets into geometry while flying throug

PostSat May 10, 2025 8:06 pm

Like Sander, I also didn't have an issue other than not having the font. I used another font and everything seemed to render fine.

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