About b3d file structure

Community Forums/Developer Stations/About b3d file structure

zzz (Posted 2006) [#1]

Im having troubles with getting the b3d files i produce to work, so i have some questions :o First off, is the content at this link still correct? http://www.blitzbasic.com/sdkspecs/sdkspecs/b3dfile_specs.txt If so, i was wondering mainly about defining chunk length, should i count number of bytes im writing to file, or count 'items' that i am writing, as in, if i write XYZ values for a vertex, should i count that as 12 or 3 in length? Everything seems to be 4 bytes in length. Im trying to whip together a b3d exporter for blender, but as of 1 hour ago i knew nothing about python, so it will be interesting to see how it turns out :o

zzz (Posted 2006) [#2]

Not sure if this is the correct place to put it, but oh well.

TomToad (Posted 2006) [#3]

been a while since I've messed with the B3D format, but if I remember correctly, chunk length was in bytes.

zzz (Posted 2006) [#4]

Yeah it was, got some of it working, playing around with bone influences now. When getting face uv data, should i just store it per-vertex as it comes and write it that way, or do i need to consider some special order/whatever?

zzz (Posted 2006) [#5]

Anyone have any suggestions about above question? I guess i could create individual verts for each face, but that would complicate things a lot when getting influences from the armature later :$

jfk EO-11110 (Posted 2006) [#6]

I released some code some time ago that saves a static B3D with UVs, this might help. Seek for "SaveB3D" in Codearchives > Manipulate Meshes >

zzz (Posted 2006) [#7]

This is going slowly lol, working now so i dont have any time really to work on this. That should help some jfk :o Managed to get animations out of blender now, need to do math stuff, then it should work, hopefully.

zzz (Posted 2006) [#8]

I managed to run into another problem now, blitz will only load 1 bone from the exported files, and the model get messed up really bad ( model were fine until i added armatures ). At the moment i am writing default values to both bone nodes and keys, would that have something to do with it? ( Figured it would not mess things up ) File structure ( accordingly to my script ): BB3D:root NODE:n.Cube MESH:Cube VRTS:Cube.v TRIS:Cube.f ANIM:Armature NODE:n.Bone BONE:Bone KEYS:Bone.k NODE:n.Bone.013 BONE:Bone.013 KEYS:Bone.013.k NODE:n.Bone.015 BONE:Bone.015 KEYS:Bone.015.k NODE:n.Bone.017 BONE:Bone.017 KEYS:Bone.017.k NODE:n.Bone.019 BONE:Bone.019 KEYS:Bone.019.k NODE:n.Bone.021 BONE:Bone.021 KEYS:Bone.021.k NODE:n.Bone.014 BONE:Bone.014 KEYS:Bone.014.k NODE:n.Bone.016 BONE:Bone.016 KEYS:Bone.016.k NODE:n.Bone.018 BONE:Bone.018 KEYS:Bone.018.k NODE:n.Bone.022 BONE:Bone.022 KEYS:Bone.022.k NODE:n.Bone.020 BONE:Bone.020 KEYS:Bone.020.k NODE:n.Bone.001 BONE:Bone.001 KEYS:Bone.001.k NODE:n.Bone.010 BONE:Bone.010 KEYS:Bone.010.k NODE:n.Bone.002 BONE:Bone.002 KEYS:Bone.002.k NODE:n.Bone.003 BONE:Bone.003 KEYS:Bone.003.k NODE:n.Bone.004 BONE:Bone.004 KEYS:Bone.004.k NODE:n.Bone.006 BONE:Bone.006 KEYS:Bone.006.k NODE:n.Bone.008 BONE:Bone.008 KEYS:Bone.008.k NODE:n.Bone.011 BONE:Bone.011 KEYS:Bone.011.k NODE:n.Bone.005 BONE:Bone.005 KEYS:Bone.005.k NODE:n.Bone.007 BONE:Bone.007 KEYS:Bone.007.k NODE:n.Bone.009 BONE:Bone.009 KEYS:Bone.009.k NODE:n.Bone.012 BONE:Bone.012 KEYS:Bone.012.k Going to see if i can put the b3d somewhere for download also. EDIT:Some bells started ringing will reading this post again, the mesh makeover problem is no more, lol.