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24th August 2005, 10:28 AM | #1 |
Member
Expert member
Join Date: Jun 2003
Location: Löhne, Germany
Posts: 58
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The default setting of the DirectX exporter is to create a frame for each AC3D object and group.
In the normal case the mesh vertices are relative to its origin (or another special point). So the meshes and other frames inside the frame can be moved/rotated/sized with a single transformation matrix which is part of a frame. For example : A car has four wheels ( in most cases :? ). Each wheel has the same mesh data (vertices) but in different frames. So it is only necessary to change the transformation matrices to rotate or move the wheels. Another example : 'DarkBASIC' ( an easy to use 3D programming language. Perhaps somebody knows it ) uses every frame of a X file as a single 'limb'. These limbs then can be moved ( rotated, ... ) by simple commands. AC3D X files have an additional 'WORLD' frame for all objects. So the whole file can be recognized in other programs as a single object. However, these multiple calculations by several frames should not cause any visible movings or distortions. Frank |
21st February 2008, 12:31 PM | #2 |
Junior Member
Junior member
Join Date: Feb 2008
Posts: 7
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Re: Exporting to .x
I purchased AC3D primarily to make and add models to a piece of software called "Rule the Rail" (I know its boring), in UK it is called "Create your own model railway"
The "Rule the rail" forum suggests that all you need to do is export in DirectX file. Me being extremely naive thought that it was easy!!! I have compared two DirectX files one from the software (RTR X file) and a similar exported version of a similar size model from AC3D in Notepad and they look totally different. It would seem that the data is in separate groupings. I have tried various settings in the DirectX export screen, but to no avail. Are there any folks ou there that can tell me where I am going wrong. Maybe the settings can be changed, so that the "Rule the Rail software can accept my model? At the moment I have checked the following: "Frames only for groups", Right handed coordinate systems, "invert face orientation" and Flip normals. But in Notepad my exported DirectX file looks nothing like the one from "Rule the rail". Any guidance will be gratefully received.: |
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