Author Topic: HDRI in area light...?  (Read 4612 times)

2018-06-22, 14:13:44

iacdxb

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Hi,

anyone can help me how to add hdri in area light...?

thanks,
imran.
Windows, Cinema 4D 2023.

2018-06-22, 14:17:25
Reply #1

Gruender

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You need to use a plane with light material on it, when I remember right.

2018-06-22, 14:29:51
Reply #2

iacdxb

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It shows reflection on floor... which I dont need, but I need reflection on product.

...
Windows, Cinema 4D 2023.

2018-06-22, 15:06:54
Reply #3

Gruender

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in that case you don't have chance... Right now it is not possible to use textures in lights.

2018-06-22, 16:42:04
Reply #4

iacdxb

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ahhhhh.....!

I think I did this in request feature for Light Tag.... if it is, the problem will be solved and handy, instead go to other long way...!

I hope developers will take notice of this.

...
Windows, Cinema 4D 2023.

2018-06-22, 19:01:18
Reply #5

Eddoron

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Compositing solves your problem.

2018-06-22, 19:24:53
Reply #6

iacdxb

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Compositing solves your problem.

I don't think so... I tried that also.

With compositing, light reflection goes from floor but it goes from object also... which I dont need.

If you have some trick... love to see that.

...
Windows, Cinema 4D 2023.

2018-06-22, 22:13:14
Reply #7

Eddoron

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I meant Photoshop, Nuke, etc.
When reconstructing the image to fine tune colors, you just leave out the reflection for that part.
« Last Edit: 2018-06-22, 22:17:44 by Eddoron »

2018-06-23, 18:42:49
Reply #8

burnin

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To create HDR textured light:

1. Create Polygon Object (ie. quad)

2. Create Corona Light Material, use your HDR texture in Emission channel, Texture slot.
    Within "Emission channel > Include/Exclude" you can set which object will be affected by the emission shader.
    Note: Only applies to direct paths/rays. Secondary paths/rays are kept visible.
    To further control/manipulate Emission visibility use Advanced settings.

3. Apply material to the geometry. Map as you please.

e.g.


& stay well

2018-06-23, 19:41:37
Reply #9

iacdxb

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wow... it works.

I think... I am getting older.... not keeping tips remember all the the time...!

thanks for helping.

Imran.
Windows, Cinema 4D 2023.

2018-06-24, 01:13:46
Reply #10

Eddoron

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and what do you do if there is no separate object, just part of a texture? like a label on a bottle?

2018-06-25, 07:34:05
Reply #11

Gruender

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Oh wow, didn't know that Include/Exclude is already integrated in light material!
So my answer was bulls***!

2018-06-25, 16:45:13
Reply #12

burnin

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and what do you do if there is no separate object, just part of a texture? like a label on a bottle?
Here are few fast ways - Either:
  • create specific, proper reflection texture out of existing albedo/diffuse/color one
  • make & set poly selection, duplicate material, disable reflection, set selection tag
  • create new Plane object for label (duplicate material, disable reflection) Shrink Wrap it to the bottle.

2018-06-25, 19:27:41
Reply #13

Eddoron

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and what do you do if there is no separate object, just part of a texture? like a label on a bottle?
Here are few fast ways - Either:
  • create specific, proper reflection texture out of existing albedo/diffuse/color one
  • make & set poly selection, duplicate material, disable reflection, set selection tag
  • create new Plane object for label (duplicate material, disable reflection) Shrink Wrap it to the bottle.

Thanks, but I wasn't really looking for an answer. I just wanted to point out that such problems could easily be solved in post.

2018-06-27, 16:29:17
Reply #14

burnin

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Thanks, but I wasn't really looking for an answer. I just wanted to point out that such problems could easily be solved in post.

everything can be solved in post, but that isn't why we're here (Q)