Dat and obj question.

01-29-07, 11:23 PM

The bobbing and stuff is set on the barrage balloons.
Still very early tests so far but they are helpful for the K-Ship
Mod and proved some very interesting concepts!!

Send me a PM with a place to send and we can go from there.

Oh, the image above is a standard Navalmine.dat tore apart!

01-29-07, 11:39 PM

Now, look at this capture. Notice the differences?

In this case, if we subtract the IEEE single from 1, we get the factor from the obj file.

ref · 01-30-07, 07:04 AM

Block 01 (3d object ) structure

01000000 block type dword
00000000 block subtype dword
00000000 block size dword
XXXXXXXXXXXXXXXX ID int64
XX unknown 1 Byte
number of vertex dword
then cames vertex data: 3 floats (x,y,z) repeats number of vertex times
number of faces dword
faces data : vertices (3 x word) ;texture coords 3x word; face material byte
The above values references index from the vertex/texture coords arrays.
number of texture coordinates dword
texture coordinates u,v float repeats number of texture coordinates
sometimes here cames a TMAP chunk (don't know what it is) I just skip it.

Ref

01-30-07, 11:58 AM

@Ref, Yes, I understand the structure of the dat file.

What I'm looking at is the conversion from .obj to hex used in the .dat
Here's a better image to explain one part of the conversion.

ref · 01-30-07, 12:42 PM

what version of pack3d did you use to import the data?
the red column (v coordinate) is all wrong :hmm:

Ref

01-30-07, 01:10 PM

This is the NavalMine.obj
I extracted using all 5 versions, all match.
To be sure it is not corrupt, I copied NavalMine.dat from
My GWX install. I don't mess around in there.

DivingDuck · 01-30-07, 01:49 PM

Hello privateer,

I did not dig deep into the texture coords issue til now, but maybe this can bring some light to you:

This i how the uvw mapping tool desktop should look like in any 3dprogramme

As the SHIII engine turns Y to -Z in vertex position it might be, that there´s a similar turnover in vertex texture coordinates. Just imagine Y becomes -Y and is counted from the top left corner. Would that match your data?

I´ve reached a point where my English isn´t good enough to explain what I mean. Hope you understand it anyway.

Regards,
DD

01-29-07, 11:39 PM	#2
Madox58 Stowaway Posts: n/a Downloads: Uploads:	Now, look at this capture. Notice the differences? In this case, if we subtract the IEEE single from 1, we get the factor from the obj file. Last edited by Madox58; 01-30-07 at 02:36 AM.

01-30-07, 07:04 AM	#3
ref Grey Wolf Join Date: Nov 2005 Location: Mar del Plata, Argentina Posts: 871 Downloads: 0 Uploads: 0	Block 01 (3d object ) structure 01000000 block type dword 00000000 block subtype dword 00000000 block size dword XXXXXXXXXXXXXXXX ID int64 XX unknown 1 Byte number of vertex dword then cames vertex data: 3 floats (x,y,z) repeats number of vertex times number of faces dword faces data : vertices (3 x word) ;texture coords 3x word; face material byte The above values references index from the vertex/texture coords arrays. number of texture coordinates dword texture coordinates u,v float repeats number of texture coordinates sometimes here cames a TMAP chunk (don't know what it is) I just skip it. Ref __________________

01-30-07, 12:42 PM	#5
ref Grey Wolf Join Date: Nov 2005 Location: Mar del Plata, Argentina Posts: 871 Downloads: 0 Uploads: 0	what version of pack3d did you use to import the data? the red column (v coordinate) is all wrong :hmm: Ref __________________

01-30-07, 01:49 PM	#7
DivingDuck Grey Wolf Join Date: Jul 2006 Location: Germany Posts: 902 Downloads: 10 Uploads: 1	Hello privateer, I did not dig deep into the texture coords issue til now, but maybe this can bring some light to you: This i how the uvw mapping tool desktop should look like in any 3dprogramme As the SHIII engine turns Y to -Z in vertex position it might be, that there´s a similar turnover in vertex texture coordinates. Just imagine Y becomes -Y and is counted from the top left corner. Would that match your data? I´ve reached a point where my English isn´t good enough to explain what I mean. Hope you understand it anyway. Regards, DD __________________ http://www.filefront.com/user/DivingDuck \| OpenHatch_V3_RH (SHIII)

01-29-07, 11:23 PM	#1
Madox58 Stowaway Posts: n/a Downloads: Uploads:	The bobbing and stuff is set on the barrage balloons. Still very early tests so far but they are helpful for the K-Ship Mod and proved some very interesting concepts!! Send me a PM with a place to send and we can go from there. Oh, the image above is a standard Navalmine.dat tore apart!

01-30-07, 11:58 AM	#4
Madox58 Stowaway Posts: n/a Downloads: Uploads:	@Ref, Yes, I understand the structure of the dat file. What I'm looking at is the conversion from .obj to hex used in the .dat Here's a better image to explain one part of the conversion.

01-30-07, 01:10 PM	#6
Madox58 Stowaway Posts: n/a Downloads: Uploads:	This is the NavalMine.obj I extracted using all 5 versions, all match. To be sure it is not corrupt, I copied NavalMine.dat from My GWX install. I don't mess around in there.