Struct Bbm

Source

pub struct Bbm {
    pub header: BbmHeader,
}

Expand description

Mesh format.

§Format Description

A placeholder description from http://fabletlcmod.com:

 Tagged Model Format

 3DMF: 3D Mesh File
     3DRT: (File Size of all Chunks)
     MTLS: Material List (File Size of All MTRL Chunks)
         MTRL: Material Description
         MTLE: Extended Material Properties
         MMAP: Mapping Info
     SUBM: Sub-Mesh
         TRFM: Transformation Matrix
         PRIM: Primitive
             TRIS: Triangle List
             SMTH: Smoothing Groups
             VERT: Vertex List
             UNIV: Unique Vertex Information
             VGRP: Vertex Group
         BONE: Bone
         CLTH: Cloth
     HLPR: Helpers
         HDMY: Dummy Object
         HPNT: Helper Point
         HCVL: Convex Volume

 Compiled Model Format

char         NullTerminatedString[x];
byte         SkeletonPresent;
float        floats[10]; //Model Origin?? Listed in .big Sub-header...
word         HPNT_Count;
word         HDMY_Count;
dword        HLPR_Index_Uncompressed;
word			padding;
word			HPNT_Compressed;
Helper Points[HPNT_Count];
  float         Matrix[4]; //No Rotation
  long          hierarchy;
word			HDMY_Compressed;
Helper Dummies[HDMY_Count];
  float        Matrix[13];
  long         hierarchy;
word			HLPR_Index_Compressed;
word			HPNT_IndexSize;
char			HPNT_Index[HPNT_IndexSize-2]; //Subtract the size
char		    HDMY_Index[HLPR_Index_Uncompressed-HPNT_IndexSize]; //Rest of helper index deduced
dword        NumberMaterials;
dword        NumberSurfaces;
dword        NumberBones;
dword        SizeOfBoneIndex;
byte         Unknown;
word         Unknown;
word         Unknown;
word         Compressed;
word         Bone_Index_Reference[NumberBones-1];
word         BoneIndexCompressed;
char         BoneIndex[SizeOfBoneIndex];
word         CompressedSize;
Bones SUB CHUNK 1[NumberBones];
word					CompressedSize;
Bones SUB CHUNK 2[NumberBones];
word					CompressedSize;
Bones SUB CHUNK 3[NumberBones];
float					Matrix[12]; //Transform Matrix

 Bones
     SUB CHUNK 1
         long					Index;
         long					Parent;
         long					nChild;
         float					Matrix[12];
     SUB CHUNK 2
         float					Matrix[12];
     SUB CHUNK 3
         float					Matrix[16];

 Material List
     dword					Material_Index;
     char					NullTerminatedString[x];
     dword					Padding;
     dword					BASE_Texture_ID; //From Texture.big
     dword					BUMPMAP_Texture_ID; //From Texture.big
     dword					REFLECT_Texture_ID; //From Texture.big
     dword					Unknown;
     dword					Max_Texture_Layers;
     dword					Glow_Strength;
     byte					Unknown;
     byte					Alpha_Enabled;
     byte					Unknown;
     word					Ignored; //For degenerate Tri's

 Sub-Mesh
 dword							Hierarchy;
 dword							DestroyableMeshLevels;
 float							floats[5];
 dword							nFaceVertexIndices;
 dword							nFaceVertexIndices_BoneIndice;
 dword							nVerts;
 dword							nFaces;
 dword							nSourceVerts;
 dword							Unknown;
 dword							Unknown;
 dword							Unknown;
 struct structMTRLnFaceVertexIndices			FaceIndices[nFaceVertexIndices];
 struct structMTRLnFaceVertexIndicesBoneIndice		Face_BoneIndices[nFaceVertexIndices_BoneIndice];
 float							floats[8];
 dword							sVert;
 dword							padding;
 //Start of Mesh

 Quick notes on sVert “Size Vertice Blocks”….

 20 - 28byte float coords, bones, packed normals, s11e4 tu tv
 6 - 28byte packed coords, bones, packed normals, s11e4 tu, tv, dword[2]
 4 - 36byte float coords, float normals, float tu tv, dword meshlevel
 22 - 36byte float coords, bones, packed normals, s11e4 tu,tv, dword[2]
 4 - 12byte packed coords, packed normals, s11e4 tu tv
 4 - 20byte packed coords, bones, packed normals, s11e4 tu tv
 20 - 20byte float coords, packed normals, s11e4 tu tv
 Dynamic Clothing

  struct CLTH
 {
 	//DWORD				SubMesh_ClothCount;
 	DWORD				Cloth_ID;
 	DWORD				??_ID; //possibly material ID
 	DWORD				sChunk; //Size of full clothing data
 	DWORD				Unknown5;
 	DWORD				sDistanceIndice;
 	CLTH_Distance*			DistanceIndice;//[sDistanceIndice/28]; //Distance between two particles
 	float				Unknown8;
 	float				Unknown9;
 	float				Unknown10;
 	DWORD				sParticleIndice;
 	CLTH_Particle*			ParticleIndice;//[sParticleIndice];
 	float*				ParticleAlphaIndice;//[sParticleIndice]; //How "free" they are. 0.0 = Static and gets a duped //  entry in verts
 	DWORD				Unknown11;
 	float				WindStrength; //strength
 	char				EnableDragging; //enable
 	char				RotationalDragging; //rotational
 	float				StrengthDragging; //strength
 	char				EnableAcceleration; //enable
 	float				AccelerationDampening; //damping
 	DWORD				nTriIndice;
 	CLTH_Tri*			TriIndice;//[nTriIndice] Particles+"Unique" Verts
 	DWORD				Unknown12; // looks like padding it
 	DWORD				sTexIndice;
 	CLTH_Tex*			TexIndice;//[sTexIndice]; //v1 = Particle/"unique" Vert, v2 = TexIndice
 	DWORD				sVertexIndice;
 	CLTH_Vertex*			VertexIndice;//[sVertexIndice];
 	DWORD				sTexCoordIndice;
 	CLTH_TexCoord*			TexCoordIndice;//[sTexCoordIndice];
 	DWORD				sParticleMask;
 	CLTH_PartMask*			ParticleMask;//[sParticleMask]; //Unique Particles in TriIndice
 	DWORD				sVertMask;
 	CLTH_VertMask*			Vertmask;//[sVertMask]; //Unique Verts in TriIndice
 	//9 bytes of padding
 	// 1 group for particles, 1 for verts
 	DWORD				VGRPCount; // = Number of Bones
 	VGRP**				VGRPs;
 };