🔒 Locked

Reversed Model

Started by webjeff May 4, 2004 at 8:38 PM 4 replies 350+ views

Original Post

May 4, 2004 at 8:38 PM

My model is reversed, like I have text that says "THIS IS A TEST" and it looks like it rendered a mirror version of it... Its an .ASE file format directly from max, max doesn''t allow me on export to reverse anything.... any ideas?? I''m really stumped, I found nothing online regarding this. I am using DirectX too, I found a similar article on openGL regarding texture coords but nothing with actual vertices reversed. Thanks in advance Jeff

neneboricua19

May 4, 2004 at 10:45 PM

It might be because in 3D Studio Max, the Z-axis points up but in D3D the Z-axis points into the screen (normally). You''ll need to make your .ASE file loader take this into account.

neneboricua

webjeff

Author

webjeff

May 4, 2004 at 11:01 PM

How do you do that? Do I need to transform the model any specific way? It must be done during loading the model somehow, any example you could give?

Thanks
Jeff

DavidST

May 4, 2004 at 11:36 PM

This isn''t related to this problem (probably) but you should know that when transforming polygons, slightly different transforms must be used to transform the surface normals of those polygons or you will get incorrect results.

neneboricua19

May 6, 2004 at 1:58 PM

quote:
Original post by webjeff
How do you do that? Do I need to transform the model any specific way? It must be done during loading the model somehow, any example you could give?

Thanks
Jeff

You don''t need to do any fancy transformations. In your load code, just take the z coordinate from your input file and place it in the y coordinate of your vertex buffer. Take the y coordinate from your input file and place it in the z coordinate of your vertex buffer.

That should do the trick.

neneboricua

protemus

May 6, 2004 at 11:45 PM

Yes... I did the same thing. y->z z->y. But make sure you also flip your surface normals in the same way or you will get some inside out models. ( texture coordinates can stay the same though )

Topic Locked

This topic has been locked by a moderator. New replies are not allowed.