What kind of Scene to choose

[Primetime00]

Hi,

I'm experimenting a bit with this engine, and I'm wondering which scene type would be best for an outdoor kind of race track. The track is a mesh created in a modeling program such as max.

I though that the dotscene addon would work nicely so I tried it with 3 seperate mesh files. Here is the result...



I am wondering if this octree box would also be the bouding box for these objects if collision detection was done... If so, shouldn't there be 3 seperate boxes instead of one large box?

Thanks for the help,
Ryan

[LordMyth]

Ogre is not a physics engine, and has nothing to do with collission boxes, and octrees neither have anything to do with collission.

[Primetime00]

than what is IntersectionSceneQuery for?

[haffax]

IntersectionQuery only gives you a (very) coarse grained set of entities that might intersect. This is only for pre-filtering entities that need to be inspected further. Octrees bounding volumes are definitely not suited for intersection tests.

[Primetime00]

ah, i see

So would it be best to make a map using only mesh entities for objects such as buildings, roads, etc. and forget about using the octree?

and for intersections and collisions, I should use ODE?

[Kencho]

I think ODE will be fine. You have many chances as ODE, Tokamak, Newton...

[dorvo]

Keep using the Octree, as this will speed up rendering each frame.
But use a physics library, like Kencho said, for collision and physics.

[pjcast]

There are posts around the forum that talk about getting data from the DotScenePlugin for use with OgreODE or OgreTok (use the search feature).

I have been trying to bring the dotsceneplugin upto date and just added a patch that was mentioned on the forum w/regards to getting trimesh data with OgreODE... Check out my DotScene Post in dev forum for more info.