Author Topic: Circle on glass reflection in animation  (Read 542 times)

2021-10-07, 14:01:06

Philip kelly

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Hi
I did a draft animation of an extension to house, and a circle appears in the reflection as it pans along and follows with the camera.
Any idea what it is, and how to get rid of it, please.
I presume it's a camera settings.
The model is simple and lit with a HDRI.
Latest Corona Commercial version not a daily build.
Still attached.
Thank you

Phil
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2021-10-07, 14:29:16
Reply #1

romullus

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What is your HDRI's projection mode? Maybe it's dome in Corona bitmap?
I'm not Corona Team member. Everything i say, is my personal opinion only.
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2021-10-07, 14:39:02
Reply #2

Philip kelly

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No, it's spherical.
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2021-10-07, 14:43:09
Reply #3

Frood

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Looks like a smoothing group issue then. Try to add a smooth modifier on top of the glass. Presumably the glass of the building is one object/mesh (imported).


Good Luck




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2021-10-07, 14:43:33
Reply #4

romullus

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That's strange. I see that reflections in the top part of the window are strangely distorted, but i have no clue what's going on here.
I'm not Corona Team member. Everything i say, is my personal opinion only.
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2021-10-07, 16:50:04
Reply #5

maru

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Looks like a smoothing group issue then. Try to add a smooth modifier on top of the glass. Presumably the glass of the building is one object/mesh (imported).

^I would bet on this

Was the glass model imported from some CAD software like Revit?
I remember a similar issue from the past and it was caused by some incorrect normal values.

If you hide those glass planes and create a simple box geometry, is the circle thing still there? 

2021-10-07, 16:54:39
Reply #6

Philip kelly

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Thank you all the replies.

The windows where from a library I have for a while.
They come in with 2d Planes and I shell and copy them , and generally use the mirror glass and turn down the opacity in the setting to 0.25.
I rebuilt the glass, and re applied the material and it seems fine now.

So
" NEVER TRUST AN IMPORTED MODEL"

My golden rule generally ,but sometime your tied for time.

Thank you all for the help, and yes it was the normals I would say.

Philip

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2021-10-07, 17:20:35
Reply #7

maru

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I'm glad it's resolved!
It's funny how something as basic as a plane with shell can break so easily. The fragile beauty of 3D ;)