Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: Ałtaj on 2017-02-26, 15:00:49

Title: abstract boxes in corona render
Post by: Ałtaj on 2017-02-26, 15:00:49
Hey,

I've just did abstract boxes tutorial by Alvaro Moreira link:

I am curious that is it possible some way to do it in Corona? Have anyone tried this?
Maybe this is possible by corona scatter?

Has anyone tried to do something like this and would share how to do this?
Title: Re: abstract boxes in corona render
Post by: James on 2017-02-27, 16:07:33
You can do it in Forestpack with Corona. Quite a few settings to set up, but it works great. I've used it for rugs.

http://www.ronenbekerman.com/forest-pack-texture-distribution/ (http://www.ronenbekerman.com/forest-pack-texture-distribution/)

I'm not sure how to do it with CoronaScatter. You can definitely drive the size/scale etc with a map just like this, but I'm not sure how you would get the colour of the texture to be transmitted through as well. I'd like to know how if its possible.

Title: Re: abstract boxes in corona render
Post by: Ałtaj on 2017-02-27, 16:48:59
thank you
Title: Re: abstract boxes in corona render
Post by: Ałtaj on 2017-02-27, 22:37:47

I'm not sure how to do it with CoronaScatter. You can definitely drive the size/scale etc with a map just like this, but I'm not sure how you would get the colour of the texture to be transmitted through as well. I'd like to know how if its possible.

Corona makers, is it possible to get the colour of the texture to be transmitted through?
Title: Re: abstract boxes in corona render
Post by: romullus on 2017-02-28, 00:38:55
Yes, it is. With some limitation though.
Title: Re: abstract boxes in corona render
Post by: Christa Noel on 2017-02-28, 02:36:20
Yes, it is. With some limitation though.
?? o God, I didn't know that there is a dumbness stuck in my head...
romullus, how did you do that with CoronaScatter?
Title: Re: abstract boxes in corona render
Post by: Ałtaj on 2017-02-28, 08:02:17
Yes, it is. With some limitation though.

Wow! Can you tell how to do that?
Title: Re: abstract boxes in corona render
Post by: Frood on 2017-02-28, 09:29:54
You can do this by using world units in your map(s). A little bit hard to align but works. You can even put a CoronaMix map into diffuse (Color dodge for example), one set to some UVW chanel, the other in world space so you can simulate something like ForestPro does with map tinting while still having the original map(s) on the objects.


Good Luck


Title: Re: abstract boxes in corona render
Post by: romullus on 2017-02-28, 11:44:00
Originally i used CoronaTriplanar map, but Frood's idea even better, because that way you can get very similar results as in the first post :]

There's not much to set up really, but in case someone still struggles, i can attach max scene later.
Title: Re: abstract boxes in corona render
Post by: James on 2017-02-28, 15:53:18
That's great. I've got it working now too. In 1.5.2

The trick is to set your bitmap mapping to 'planar from world xyz' then use real world scaling as Frood suggested.

Its not perfect by far, but nice to see that its possible. Would love to see this added to the Corona scatter options properly. i.e. a rollout in Cscatter object and some mapping options. Because at the moment this takes some careful fiddling to move the map around and if you ever want to move a scatter you would have to redo it all I'm guessing?...
Title: Re: abstract boxes in corona render
Post by: Frood on 2017-02-28, 18:15:07
you would have to redo it all I'm guessing?...

You would have to offset your map if it has to fit, yes. I´m using it almost only as some kind of enhancement layer where in most cases it doesn´t matter where the map starts/ends (see attachment: left with world coordinates map, right: without). For more complex tasks we still use ForestPackPro wich is kind of suffering from legacy stuff and CoronaScatter is straighter and faster for many tasks.

But it would be convenient if CoronaScatter would accept a UVW map modifier on top; moving a scatter would not be a problem any more and it would be more flexible regarding map channels.


Good Luck


Title: Re: abstract boxes in corona render
Post by: Ałtaj on 2017-02-28, 18:55:59
Originally i used CoronaTriplanar map, but Frood's idea even better, because that way you can get very similar results as in the first post :]

There's not much to set up really, but in case someone still struggles, i can attach max scene later.

It would be great! Thank you!

And thank you Frood for your idea, surely gonna try it out.
Title: Re: abstract boxes in corona render
Post by: romullus on 2017-02-28, 19:28:16
No problem. Attaching scene.

[..] Because at the moment this takes some careful fiddling to move the map around and if you ever want to move a scatter you would have to redo it all I'm guessing?...

You can use triplanar map - no fiddling with uwmapping and offsetting requires. The downside is, that you might get unwanted results on Z axis.
Title: Re: abstract boxes in corona render
Post by: Christa Noel on 2017-03-01, 02:37:09
you guys are cool! thanx frood and romullus for the tricks :D