Both links are in the main article above…

pixnolve, all three are modelled and rendered in blender using only the internal renderer for output and some composite nodes…. the third shot had some artefacts touched up in gimp…

the modelling on the third shot (jungle) was assisted by “ivy generator” and a couple of stock models from blender greenhouse (palm and dracena)

Try the manual on the wiki for particles…

Here’s the manual page on PARTICLE visualisation

http://wiki.blender.org/index.php/Do…/Visualisation

set the visualisation type to object or group (the latter if you want a random set of objects)

You’ll want to set”unborn” and “died” to on and make sure you’re at the first frame…. m 9you may want to have the “emitter ” button enabled if you want the emitter to render! could be important if you’ve used the ground!

Now your objects should be distributed across your emitter surface…

the “amount” value on the particle system panel sets how many instances you’ll have

look at the rotation settings on the physics panel..set the pulldown labeled “none” to “normal”… it should angle the objects to the surface and add a random factor as well…

finally to tweak with weight maps go to the “extras” panel…

at the bottom is the vertex group pulldown… use it to associate particle parameters to vertex groups…

(the “gotcha” is that you can assign a vertex group to each of teh parameters on the pulldown, so things get pretty hidden!

Deso said: “Not bad :) Should the trees grow from rocks ?”

Deso, especially in very warm and humid climates trees often do grow up between rocks, and then sort of wrap their roots around them. seedlings or “water sprouts”will sometimes grow up through a tiny fissure in an otherwise largely solid stone formation, eventually splitting it apart. They tend to grow thru and around old stone buildings in much the same way. There are some trees that are more inclined to act that way than others, but don’t ask me what species they are, because I never remember things like that. ( I could talk about this for ages, so I’ll just shut up now)

Micheal W
I read the work in progress thread for this image, and the others that are shown there, and I’m really impressed, Lovely work.

I liked the Jungle scene, as well as this one. I tried to read your explanation of how you did things, but I’m sort of new to blender and a lot of it just turned into gibberish on the journey from my eyes to my brain. Is there a tutorial somewhere for that particle system technique you described?