Topics

1

[C4D] I need help! / wire shader angle restriction

« on: 2023-10-06, 12:30:13 »

Hi, is there a way to restrict the wire shader effect to let's say all 90° angles, and thus not for the triangulation of certain plain surfaces (where untriangulate function doesn't work)?

thanks for any suggestions!
Koen

2

[C4D] I need help! / Corona pattern overlap

« on: 2023-04-11, 08:24:16 »

Hi, is it possible to use corona pattern with overlap of the pattern object?
Let's say on a uvw tiling of 20x20cm, to have a 5cm overlap of the object at the top?
p.e. roof tiles that have a specific tiling but a visible overlap. When I tried to, the roof tile was cut of and didn't give a good impression.

I understand that I can make the cutt-off part as a part of the pattern object, but then I couldn't use random texturing with a variation shader on the tiles, right?

3

[C4D] I need help! / distance shader & active camera

« on: 2022-11-29, 11:28:46 »

can you use the distance shader with the active camera as the 'from object' ?

I have a really large scale sc

4

[C4D] I need help! / Frontal reflection on sky stays too shiny on matte materials

« on: 2022-09-12, 12:27:09 »

Hi
I'm including a testscene so you can test, but I'm experiencing too shiny reflections on matte materials when using a frontal mapping on a sky, in the case where I have a seperate reflection object.

To clarify the use in my current project.
I have a building to visualize and received high level drone shots in all directions. So I'm using these drone shots as a background. Because I want the 'correct' reflection in the large glass facade, I'm using a different sky object for only reflections, and using a photo in opposite direction for that. This gives me more or less a good impression of the reality.

However when using the frontal mapping on the sky, the reflections not only show up on the shiny glass, but also on the window frame (which is a relatively matte <> satinated material) as shown in the printscreen image below. Also when making it really matte material teh sharp reflections stay

Am I doing something wrong or is there another way/workaround to do this besides using a very large plane object.

Thanks, Koen
 

5

[Scatter] I need help! / Clean grass edge near pool border

« on: 2022-07-03, 12:45:42 »

Hi everyone,

Is it possible, using chaos scatter, to get a cleaner result near the pool border, just by using the scatter?

I added the pool border as a apline in the spline exclude field with 12-14cm  and scale and density at 100%. The scale doenst seem to have much effect with this thin border?
When I change the seed, it can get a bit better but never clean enough.

I can only make it better by using a linear cloner to make a straight finish.

I'm attaching images with and without the linear cloner to illustrate

PS: as a side question, is it possible to change the size for an individual scattered object when they are proxies from the cosmos browser?

Thanks,

6

[C4D] I need help! / Shadow catcher compositing for grass edge

« on: 2022-05-04, 12:25:38 »

Hi,
I have been working on a technique for making grass with scattered grass blades on the border, for large scale projects.
It works pretty well execept the backside which is not taking the shadow effect, so these shadow parts always require extra photoshopping.

When you turn to the other (sun-)side the shadows work fine, but on the shadow side the shadow is not taking into account.

in my project, I'm replacing the green by a 360° photo.
there's a printscreen included from a real project where you can see the problem

Is this a corona limitation, or am I just doing it completely wrong (v7.2)?
thanks for any help !

7

[C4D] Bug Reporting / Projector shaders make IR crash all the time

« on: 2021-11-04, 22:32:12 »

Hi ,
I just wanted to let you know that in my personal case, the C4D projector shader is my main reason for the many IR crashes I have. With an AMD threadripper 64-cores and 256GB I hoped to work without problems using the IR on large scale projects, or again with upgrading 6 to 7, but it seems I finally found the actual problem which was the reason for crashes on both small and large projects.

I use a lot of furniture and decoration objects from designconnected.com in a subscription, but all the 3D-models have as a standard projector shaders in the materials. When I convert the c4d materials to corona (legacy) materials, the projector shaders are also included.
I easily had about 15 crashes a day when using IPR, until I recently cleaned up a project (that kept crashing instantly when starting the IR) from all projector shaders. This was a pretty time-consuming job to do with about 1000 materials to check all channels and nested fusion or layer shaders.
It took me a few crashes and restarting the checking over and over to eliminate all the projector shaders from the the project, but once done, I was sooooo relieved and impressed to be able to work an entire evening without crashes in that very same project... very stable at last.
With the next following projects I have the same results...

Maybe other people should check this too when they experience many crashes in IR.
I hope a solution for this problem will come with corona 8 or 7HF3 ;-D
best regards

8

[C4D] I need help! / make specific trees semi-transparent

« on: 2021-06-25, 13:30:54 »

Hi,
I'm working on a project where I would like to make some specific trees semi-transparent to show what's behind them.
I tried making the materials transparent, but with 3D trees, when too many leaves behind each other, the effect of transparency is lost (in the centre, on the edges the effect is as expected)

So, I was thinking I might need multipass (mask the objects?) and compositing, but (a bit shamed to admit ) I have never used multipass before so very newbie about that...

Can somebody explain me, what the best way is,  to do this, by detailed step or example file?

many thanks!

9

[C4D] Daily Builds / v6 Hotfix2

« on: 2021-06-15, 13:54:47 »

what exactly has changed in hotfix 2?
only S24 support or also certain bugfixes?
thanks, Koen

10

[C4D] Feature Requests / displacement enable/disable in render settings

« on: 2021-03-24, 14:31:15 »

it would sure be functional to have a displacement enable/disable option in the render settings
along caustics-motion blur-DOF enable/disable buttons

It could much improve performance and IR preparation time when not needed, p.e. when you're working on lighting or overall work on the scene

I really hope this can be integrated

11

[C4D] I need help! / zdepth for 360tour

« on: 2021-03-08, 11:39:01 »

Hi, I would like to render a zdepth images for a 360 tour on 'TheViewer' platform.
It will allow a more visual warping instead of just switching/fading from point to point.

Here is a tutorial/explanation for corona on 3Dsmax, but the parameters are a bit different for C4D and the option  'use camera environment range' is unavailable in C4d.
https://help.theviewer.co/article/64-6dof-in-360-vr-images-depth-map-quick-guide

I have not got much knowledge about multipass but when I simply activate zdept, the layer is plain black

is there a way to do this in C4D?
any help is much appreciated!

12

[C4D] Bug Reporting / R23 Asset browser

« on: 2021-03-04, 16:29:55 »

I think there is still some compatibility issue with Corona 6.1 and R23 Asset Manager.

I use the asset manager very intensly, to relink textures used from the Content browser presets to absloute paths,
because since version 6.1 there are serious performance issues with loading textures from presets (read: no absolute paths) and superslow rendering material previews.
Therefore I have to relink a few times every hour to keep C4D fast, the difference is really huge when using absolute paths everywhere.
But the actual problem I experience now is this:

When I use an IES light source, inside a corona light, from a preset (either a preset for IES database, or an IES included in imported lighting preset) it is impossible to replace or relink the IES file in the asset manager. It seems to work, and it's changing to the absolute path, but after a few seconds the path flips back to the preset IES. Equal when using the replace function.

When using a regular/native light this functionality works as expected...

Thanks for some info on this,

13

[C4D] Feature Requests / compositing tag sliders

« on: 2021-02-24, 22:19:55 »

Hi, replacing on/off switches in the compositing tag with sliders 0-100% would be appreciated.

p.e. sometimes a client asks me to reduce the cast shadows on the building for a specific tree... I know this is cheating but I would not know how to do this else but to render twice with and without shadows then blend in PS.
A slider for the shadows would then be very handy.
and the same goes for visibility.
(I believe this was also a feature in vrayforc4D?)

thanks for considering this...

14

[C4D] Bug Reporting / v6.1 shadow catcher rendering yellowin IR when change to reference

« on: 2021-02-10, 14:30:17 »

hi,

when I apply a shadow catcher to a surface and reference it in environment mode to a sky with HDRI material, everything is fine until I change something to the HDRI material.

This can be changing the intensity of the light material or inside a filter shader.
Only solution to continue is restarting IR

so for the included test file:
1) start IR
2) change the intensity of the sky, and surface becomes yellow

when using the hdri directly in the sky, I can change the sky intensity or change color in a filter shader without it turning yellow, but if I
1) duplicate the sky
2) put the second sky in a null
3) make the null invisible (with second sky inside)
the floor surface with the SC turns yellow again

I don't know how this responds in v7, but it is equal on R18-R19 and R23 with v6.1

// free HDRI by HDRI-hub.com

15

[C4D] Bug Reporting / v6.1 invisible reference objects for render instance still render in IR

« on: 2021-02-10, 13:33:52 »

hi,

I have a habitude to organize all my decorative objects and furnitures in an invisible null called 'symbols'. Then I make render instances and place them in the scene.

However when the 'render instance' option is enabled for the instance, the original reference object is also rendered in IR (not final render), even when parent is set to invisible for rendering.

I am including a quick test scene to see if you can reproduce the error:
1) start IR as is on startup file, it renders only the instance as expected since the render instance is disabled.
2) enable the render instance in the object manager
3) restart IR and both the render instance and reference object are also rendering now, while this is not expected behaviour since the parent is set to invisible.

We have had this problem on R18 and R19 since v5,v6 and 6.1, and tested with same results in R23 v7 too
my workaround  is to lower my symbols null to height -5000, but it needs to restart the IR to see it dissapear. With parsing times often around 6 minutes, it's quite a pain to see p.e. a reference tree in the middle of the livingroom...

cheers, koen