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Yet another annoying terrain question


drapp@frontiernet.net
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I appologize in advance for my 'yet another dropping things onto terrain' question.

 

I have a very high poly terrain. I also have roads, sidewalks, parkinglots and buildings all that need to be 'dropped' onto this very uneven mesh. The buildings are no problem, but there are so many roads, etc that nothing seems to work.

 

The roads, sidewalks etc all come from AutoCAD and I have cleaned them up, closing all gaps and overlapping splines etc.

 

I've tried the boolean/cut/split thing that was mentioned in that PDF tutorial excerpt, but there is an error in the writing and MAX doesn't allow me to select the road opperand after the boolean (and the mesh is so dense that I can't stomache the idea of hand-selecting all those teeny triangles)

 

I've tried the Itoosoft Glue thing (which I've used many times on a smaller scale), but it craps out after a while and I get a null result (yay)

 

I've also tried the whole shapemerge thing - no success.

 

There HAS to be a better way. Like some way to 'z project' the roads onto the terrain. I don't know, I'm starting to consider shoveling dirt for a living. That way I'd get to wear a 'wife beater' to work. Nah, I love 3D.

 

Any thoughts?

 

Thanks,

 

Dave

 

[no wives were beaten in the creation of this email]

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Interesting! I am in a rather "dense" mood today.. Cannot think of any solutions offhand, but it would be interesting to see if anyone can come up with solutions for this one. I would like to know how this is done too.

 

Btw, I will try out some stuff later and post stuff if I get something out of it.. Dont have Max on this machine. Curious, no one has answered yet..

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I don't think there is an error in the writing. The process is really very simple and if you're having problems, make sure you can get it to work for simple primitives before applying it to something so complex. You say you can't select the road operand after the cut...that's because the road operand no longer exists after the cut. You have to apply the Edit Mesh modifier after the cut and go to Face subobject mode and detach the faces. If it still doesn't work, write exactly what steps you're doing and what happens after each.

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Brian,

 

Thanks for the reply. I ended up deforming the verts of the roads (manually) to the terrain and vise versa. its been time consuming, but at the time I was at whits-end.

 

I've since tried that technique on a smaller scale and gotten it to work. Its a big pain due to the shear number of triangles involved. Again I assert - there's got to be a better way.

 

(I'm really starting to hate terrain, its always been a big pain - getting it, importing it, optomizing it, getting roads and parkinglots on it)

 

Digimation save me!

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Alright, I tried the same tutorial and am having no luch either. After you do the boolean, cut, split and then pick the opperand button, the road object disappears. So the next step says to pick the raod object and then add the edit mesh modifier. So how are you supposed to pick the road object when it just disappeared??? I can't get past this point.

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Alright, I tried the same tutorial and am having no luch either. After you do the boolean, cut, split and then pick the opperand button, the road object disappears. So the next step says to pick the raod object and then add the edit mesh modifier. So how are you supposed to pick the road object when it just disappeared??? I can't get past this point.

 

Where exactly are you reading this? I went back and could not find this error. Which part (I, II, or III) and which page?

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