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possible error in obj export

Author	Comment
meshula	possible error in obj export	Lead	[-]
(05/08/02 12:09:22) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	Tags : None Hi there, The normals in the .OBJ file generated by the OBJ export in Wings are not of unit length. I've never had an issue before with OBJ files from other applications, and was wondering if the Wings exporter is correct and if the OBJ specification allows for the normals to be any length? Or, if Wings needs to normalize the normals before writing them. I had to add a normal normalizer to my OBJ file loader... - nick
bjorng	Re: possible error in obj export	#1	[-]
(05/08/02 22:17:07) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	It is a bug in the OBJ exporter. My intention was that the normals should be normalized. I'll look at it.
bjorng	Bug fixed	#2	[-]
(05/08/02 22:47:08) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	I didn't do a proper normalization when hard edges were involved. Now it is correct. Thanks for finding this subtle bug.
GetaVe	Re: Bug fixed	#3	[-]
(05/08/02 22:57:24) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	yah thanks we appreciate it............man that was a close call.........if you hadnt found that bug when you did..........wooooooooowwwwweeeeeee who knows what would have happend................WHY O_O probably nothing...............hahahaha im so sorry.......i just thought that was funny.............NO DISRESPECT!!!!!!!!!!!!!
mestela	Re: Bug fixed	#4	[-]
(05/08/02 23:06:38) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	You post too much getave.
meshula	OBJ exporting	#5	[-]
(05/10/02 15:12:06) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	Doesn't EVERYONE write importers and exporters and write test suites to make sure of file format correctness? I thought it was everyone's hobby, especially yours, getave :) The principle effect of incorrect normal lengths in case anybody cares :) is that environment mapping and lighting in your game engine look really weird. If you aren't writing a game engine, then you ain't the suckah who has to deal with these things!!!! I'm using OBJ as an import format because of all the export formats supported by Wings3d, only OBJ import can be coded in an hour (by me, YMMV).

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