What do you mean by “wave animations”?
I’ve got a Duron 1300 with 512 Mb RAM and it took maybe 10 to 30 or more minutes to load a DXF that was about 20 Mb. (I don’t want to try it again to get a more accurate figure)
I understand a 100mb file may take a while to load, but an hour ?!? That seems ridiculous. I don’t mind though, as long as once it’s saved as a blend file with that rem doubles thing it doesn’t take so long to load afterwards.
Depending on the speed of your computer it could take many hours… I suggest you export a smaller DXF (like 20-30 Mb, which is about 130,000 polygons, like I’ve suggested.
(as a matter of curiosity, what’s the rendering time like for the textured mesh ?)
Good tips LukeW, if only I could get the damnable DFX to load…
How do you know the number of vertices and faces you’re going to import ?
In the terrain generating program there is probably a setting for the resolution of the terrain grid - e.g. 1024 x 1024 or 512 x 512. If the grid resolution is 512 x 512 then that is 262,144 (512x512) squares which is 524,288 (x2) faces (triangles). In Bryce, the DXF exporter gives each triangle 3 new vertices, so for that example you x3 = 1,572,864. But if the faces share vertices then there would be much less vertices e.g. each corner of the faces could share with 6 others, so it has 1/6 of a vertex each, so each face (triangle) would have 1/2 vertex…
I’m running lots of programs at the same time, such as the internet and Corel Photopaint. It takes 4.3 seconds to render it without OSA. You can see about a 1/3 of the landscape there. It uses two procedural textures - a colorband clouds one, and a stucci bump map one. If you look at the black part of the picture you can see how low-res the hill is. I want to use it in an animation so time is very important to me. It takes 6.3 seconds if I use the first level of SubSurf. Note that I used 3d studio max to optimize the triangles in this mesh… if you use an unoptimized terrain grid you wouldn’t get as much detail using the same amount of polygons (107,000 faces/triangles)
You can download that scene here: (1.7 Mb zip)