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Dark GDK / quick question

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matt rochon
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Posted: 6th Jul 2005 23:29
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i just bought the sdk and I was wondering a couple things:

1) Do I have access to the scene graph (or BSP) or whatever?
2) Are the 3d maths functions very fast or am I just as well to use code I have already written for D3D and OpenGL?
3) Some of the matrix functions have to do with the lookat matricies and FOV and such. If I want to change these matrices myself how can I apply these transformations or where are the world, view, and projection matrices stored?

Thanks guys
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OSX Using Happy Dude
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Posted: 6th Jul 2005 23:39
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Quote: "Do I have access to the scene graph (or BSP) or whatever?[/img]"

BSP commands are there

Quote: "Are the 3d maths functions very fast or am I just as well to use code I have already written for D3D and OpenGL?"

Time it at see - yours may be faster...

Quote: "Some of the matrix functions have to do with the lookat matricies and FOV and such. If I want to change these matrices myself how can I apply these transformations or where are the world, view, and projection matrices stored?"

Pass...


Atomz is at http://homepages.nildram.co.uk/~nickk
http://spaces.msn.com/members/BouncyBrick/
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matt rochon
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Posted: 6th Jul 2005 23:41
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good call on #2 lol

for #1 i meant the scene graph that the renderer uses. This would be handy for things like AI as you can get accurate and quick lines of sight and such.
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OSX Using Happy Dude
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Posted: 7th Jul 2005 00:04
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Scene graph ? 'fraid I dont know what your talking about there - unless your talking about the rendering system...


Atomz is at http://homepages.nildram.co.uk/~nickk
http://spaces.msn.com/members/BouncyBrick/
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matt rochon
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Posted: 7th Jul 2005 00:08
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the part of the rendering system that organizes and displays objects that are visible to the camera. It handles things like occlusion culling and such by tracing through a tree like structure.

A scene graph is the same idea as BSP just a different implementation. I dont know what the db engine uses but it would be nice to have even read-only access to the data structure.
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OSX Using Happy Dude
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Posted: 7th Jul 2005 00:16
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For that sort of information, you'll need to ask Mike, I think...


Atomz is at http://homepages.nildram.co.uk/~nickk
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matt rochon
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Posted: 7th Jul 2005 00:18
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sure

any ideas Mike?
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Mike Johnson
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Posted: 7th Jul 2005 00:37
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Information about the rendering isn't available right now but it can be exposed for an upgrade.

Going to be a whole host of new functions in the next upgrade that open things up a lot more so you can get full control over everything.
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matt rochon
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Posted: 7th Jul 2005 01:14
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fair enough.

for now, is the scene stored in bsp (or scene graph) for objects loaded at runtime not from a bsp file?
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Mike Johnson
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Posted: 7th Jul 2005 01:30
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For regular objects everything is stored in several arrays. When using some of the commands things will be stored in nodetree formats.
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matt rochon
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Posted: 7th Jul 2005 01:46
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is there any way to force the renderer to use the tree formats?
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