Author Topic: Z-Fighting!  (Read 1228 times)

JamesHoran

    Reputation: 5
Z-Fighting!
« on: January 04, 2012, 01:23:26 pm »
January 04, 2012, 01:23:26 pm
Hi All, happy new year - hopefully this will be easy for someone.

I'm trying to build a model - a section of city, placed on a very large screengrab from Googlemaps, to give it a large context.
So - in order to zoom out to the extents, I'm a great distance from the map, and getting harsh Z flickering effects with the standard environment set-up, unless I pull my model WAY up from the zero plane. The problem then is that collision on the base layer isn't working as it's raised 50M above ground (to avoid the flicker).
Any ideas? Anyone had to cut a hole into the standard sample environment, is it possible?

Thanks for any help,

James

mischa

    Reputation: 23
Re: Z-Fighting!
« Reply #1 on: January 04, 2012, 01:35:07 pm »
January 04, 2012, 01:35:07 pm
Hi All, happy new year - hopefully this will be easy for someone.

I'm trying to build a model - a section of city, placed on a very large screengrab from Googlemaps, to give it a large context.
So - in order to zoom out to the extents, I'm a great distance from the map, and getting harsh Z flickering effects with the standard environment set-up, unless I pull my model WAY up from the zero plane. The problem then is that collision on the base layer isn't working as it's raised 50M above ground (to avoid the flicker).
Any ideas? Anyone had to cut a hole into the standard sample environment, is it possible?

Thanks for any help,

James

Hi,

yes that problem can be avoided by adding the effect "camera clip planes" in the movie section! You ghave to play araound a bit with the settings and you maybe even have to animate the settings if the camera is animated, but it should solve your problem...I had the same problem some months ago and the flickering was gone that way after a while of testing...

JamesHoran

    Reputation: 5
Re: Z-Fighting!
« Reply #2 on: January 04, 2012, 03:09:10 pm »
January 04, 2012, 03:09:10 pm
Thanks for the reply Mischa, but I'm hoping to use this file in theatre / interactive mode. Doesn't seem to help adjusting the clipping plane.
Any other ideas much appreciated.

Re: Z-Fighting!
« Reply #3 on: January 04, 2012, 04:24:41 pm »
January 04, 2012, 04:24:41 pm
Hi James, are you familiar with the Depth offset slider?

It allows you to offset objects that are co-planar with other objects.

Press shift while adjusting it, and make sure that you only change the slider value as much as is needed to stop the flickering from occurring.

There's more information here:
http://lumion3d.com/forum/index.php?topic=1679.msg10304#msg10304

JamesHoran

    Reputation: 5
Re: Z-Fighting!
« Reply #4 on: January 04, 2012, 05:11:44 pm »
January 04, 2012, 05:11:44 pm
Fantastic... that's it fixed now - thanks to you both - depth offset was the key.

Re: Z-Fighting!
« Reply #5 on: January 04, 2012, 05:22:41 pm »
January 04, 2012, 05:22:41 pm
Good to hear that, James.