Making a billborad Tree?

kaboraa · Post by **kaboraa** » Wed Jan 26, 2005 10:29 am

This looks like a dumb question but how do I make a billborad tree. I think the billborad node cannot be used because I tried it and instead of giving me very opaque areas and transparent areas, the tree had some level of transparency on any pixel.

deprecated · Post by **deprecated** » Wed Jan 26, 2005 5:41 pm

I dont have any answers...
I would also like to know if this is something that can be done with irrlicht.
A simple solution similar to speedtree would be great.

Anyone have some ideas??

would ya have to attach each billboard to the tree?.. or is there a good easy way to make nice trees?

Spintz · Post by **Spintz** » Wed Jan 26, 2005 6:00 pm

you need to set a certain color to be the transparency color with the makeColorKeyTexture function.

deprecated · Post by **deprecated** » Wed Jan 26, 2005 6:52 pm

Ok, so this is probably not what the thead was started about, but not enough talk on the forums about realistic trees...

etcaptor did some cool stuff, and talks about it a bit...
checkout these posts...
http://irrlicht.sourceforge.net/phpBB2/ ... e&start=15
It talks a bit about how he did it...

Also, I remember reading someone else on the forum had made a really nice example of multiple trees with leaves and such.. almost at the level of speedtree in visual look. Cant find the thread... It had screenshots of birch trees or something like that.. I think it was talking about using diff. LOD levels and such all the way down to single billboards when you are farthest away. Anyone remember that thead or implement something similar??

I dont want speedtree, with wind and all that, what I am after is leaves and such..

I dont know about everyone else, but being able to put up some nice trees (and many of them) would be a benefit.. I am sure its possible, just hard for beginners and intermedate users...

etcaptor · Post by **etcaptor** » Wed Jan 26, 2005 11:57 pm

You can see part of this issue also here:

http://irrlicht.sourceforge.net/phpBB2/ ... =tga#28613

Yeah, I'm still not made some tree generator

Now .X exporting animation eat my time, but after that and some AI solution I'll return to trees creation.

kaboraa · Post by **kaboraa** » Thu Jan 27, 2005 8:51 am

Thanks guys

I didn't actually know that you could make a particular color transparent. I am yet to implement this idea but I am sure it would work. I am not sure if I have seen this function in the Irrilicht documentation i.e makeColorKeyTexture

Spintz · Post by **Spintz** » Thu Jan 27, 2005 12:35 pm

It's a function of the IVideoDriver class, to help ya find the doc's on it.