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DevLiquidKnight

Using Oct-Trees with .x Files?

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Does anyone have any sites that contain information on how to make a oct tree with a .x file? I read about it some but I have''t been able to figure it out? I load the mesh and I know I must probably do something with its vertex buffer, and create an oct tree but I''ve been unable to find any information regarding using this with directx and .x files?

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.x or 3ds or any others file format is same thing: a bunch of triangles.

You must use Plane.ClassifyPolygon(Triangle) then, divide your scene in small boxes.

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If you just get the vertex & index buffers from the X mesh, and simply pull out all the triangles, you''re all set with your triangle soup and ready to make an octree. There shouldn''t be any problem with this.

-Mezz

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I don''t see where the problem is. You build a triangle list from the vertex / index buffers, loaded from a .x file or whatever, build your octree, and save the result to another format or a custom .x format (I dunno if you can do this though). Most often than not, the tree should just have indices to triangles/mesh fragments stored, and is completely detached from the actual geometry.

all that process should be done offline, as it is a bit expensive.

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