Difference between revisions of "Sims 3:0x015A1849"
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<br/>[[Sims 3:Main Page]] -> [[Sims 3:RCOL]] | <br/>[[Sims 3:Main Page]] -> [[Sims 3:RCOL]] | ||
<hr/> | <hr/> | ||
| − | = | + | =Overview= |
| − | This is a [[Sims 3:RCOL]] chunk. | + | This is a [[Sims 3:RCOL]] chunk for Body Geometry. |
| − | = | + | =Format= |
DWORD 'GEOM' | DWORD 'GEOM' | ||
DWORD Version // 5 | DWORD Version // 5 | ||
| Line 20: | Line 20: | ||
DWORD FCount // was named Version, but is number of vertex elements | DWORD FCount // was named Version, but is number of vertex elements | ||
--repetition FCount: | --repetition FCount: | ||
| − | --insert Vertex Format // see below | + | --insert Vertex Format // [[#Vertex_Format|see below]] |
--repetition NumVerts: | --repetition NumVerts: | ||
| − | --insert Vertex Data // see below | + | --insert Vertex Data // [[#Vertex_Data|see below]] |
DWORD ItemCount | DWORD ItemCount | ||
| Line 31: | Line 31: | ||
--repetition NumFacePoints: | --repetition NumFacePoints: | ||
WORD[3] // standard face index (three unsigned words per face) for 2-byte FaceFmt | WORD[3] // standard face index (three unsigned words per face) for 2-byte FaceFmt | ||
| + | |||
| + | DWORD flags | ||
| + | |||
| + | DWORD count1 | ||
| + | --repetition count1: | ||
| + | DWORD bonehasharray // 32-bit hash of used bone names. | ||
| + | |||
| + | --insert TGI Block List // see [[Sims 3:Key table]] | ||
| − | == | + | ==Vertex Format== |
| − | + | long DataType | |
| − | long | + | long SubType |
| − | + | byte BytesPerElement | |
| − | long | + | |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | === | + | ===DataType=== |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
{| border="1" | {| border="1" | ||
|+ | |+ | ||
| Line 70: | Line 66: | ||
|} | |} | ||
| − | + | ===SubType=== | |
{| border="1" | {| border="1" | ||
|+ | |+ | ||
| Line 84: | Line 80: | ||
Based on contributions from karybdis and atavera | Based on contributions from karybdis and atavera | ||
| − | == | + | ==Vertex Data== |
| − | + | Data for the known Vertex Formats follows. | |
| − | + | ===Format 3=== | |
| − | Format 3 | + | float PositionDelta[3] |
| − | float PositionDelta[3] | + | float NormalDelta[3] |
| − | float NormalDelta[3] | + | long VertID |
| − | long VertID | + | |
[28 bytes per vertex] | [28 bytes per vertex] | ||
| − | Format 6 | + | ===Format 6=== |
| − | float Position[3] // XYZ, Y is UP | + | float Position[3] // XYZ, Y is UP |
| − | float Normal[3] | + | float Normal[3] |
| − | float UV[2] | + | float UV[2] |
| − | uchar Bone Assignments[4] // a packed byte array, parsed lo order to high order | + | uchar Bone Assignments[4] // a packed byte array, parsed lo order to high order |
| − | float Weights[4] // first weight is lowest order byte of assignments, 0.0 (0L) weights are unassigned slots | + | float Weights[4] // first weight is lowest order byte of assignments, 0.0 (0L) weights are unassigned slots |
| − | float Tangent Normal[3] | + | float Tangent Normal[3] |
[64 bytes per vertex] | [64 bytes per vertex] | ||
| − | Format 7 | + | ===Format 7=== |
| − | float Position[3] // XYZ, Y is UP | + | float Position[3] // XYZ, Y is UP |
| − | float Normal[3] | + | float Normal[3] |
| − | float UV[2] | + | float UV[2] |
| − | uchar Bone Assignments[4] // packed byte array | + | uchar Bone Assignments[4] // packed byte array |
| − | float Weights[4] | + | float Weights[4] |
| − | long VertID | + | long VertID |
| − | float Tangent Normal[3] | + | float Tangent Normal[3] |
| − | [68 bytes per vertex] | + | [68 bytes per vertex] |
| − | Format | + | ===Format 7=== |
| − | float Position[3] // XYZ, Y is UP | + | float Position[3] // XYZ, Y is UP |
| − | float Normal[3] | + | float Normal[3] |
| − | float UV[2] | + | float UV[2] |
| − | long Tagval // color channel bytes | + | long Tagval // color channel bytes |
| − | uchar Bone Assignments[4] // a packed byte array | + | uchar Bone Assignments[4] // a packed byte array |
| − | float Weights[4] | + | float Weights[4] |
| − | long VertID | + | long VertID |
| − | float Tangent Normal[3] | + | float Tangent Normal[3] |
[72 bytes per vertex] | [72 bytes per vertex] | ||
| − | |||
| − | + | ===Reading Vertex Data Blocks=== | |
For each vertex, you need to loop through the VertexFormat as defined, and read the information in order. | For each vertex, you need to loop through the VertexFormat as defined, and read the information in order. | ||
Revision as of 11:08, 6 December 2009
Sims 3:Main Page -> Sims 3:PackedFileTypes
Sims 3:Main Page -> Sims 3:RCOL
Contents |
Overview
This is a Sims 3:RCOL chunk for Body Geometry.
Format
DWORD 'GEOM' DWORD Version // 5 DWORD tgi offset // see Sims 3:Key table DWORD tgi size // see Sims 3:Key table DWORD EmbeddedID // 0, 0x548394B9 (FNV32 of "SimSkin") observed --if (EmbeddedID != 0): DWORD ChunkSize --repetition FCount: BYTE // starts with 'MTNF', follows the same format of MTNF from Sims 3:0x01D0E75D DWORD DWORD DWORD NumVerts DWORD FCount // was named Version, but is number of vertex elements --repetition FCount: --insert Vertex Format // see below --repetition NumVerts: --insert Vertex Data // see below DWORD ItemCount --repetition ItemCount: BYTE BytesPerFacePoint DWORD NumFacePoints // means faces*3 --repetition NumFacePoints: WORD[3] // standard face index (three unsigned words per face) for 2-byte FaceFmt DWORD flags DWORD count1 --repetition count1: DWORD bonehasharray // 32-bit hash of used bone names. --insert TGI Block List // see Sims 3:Key table
Vertex Format
long DataType long SubType byte BytesPerElement
DataType
| 1 | Position | (3 float == 12 bytes) | 2 | Normal | (3 float == 12 bytes) | 3 | UV | (2 float == 8 bytes) | 4 | Bone Assignment | (4 packed integers == 4 bytes) | 5 | Weights | (4 float == 16 bytes) | 6 | Tangent Normal | (3 float == 12 bytes) | 7 | TagVal | (4 packed bytes) -- colour channel data | 10 | VertexID | (long == 4 bytes) |
SubType
| 1 | floats | 2 | bytes | 4 | long |
You calculate the offset of each element from the sum of the previous BytesPerElement
Based on contributions from karybdis and atavera
Vertex Data
Data for the known Vertex Formats follows.
Format 3
float PositionDelta[3] float NormalDelta[3] long VertID
[28 bytes per vertex]
Format 6
float Position[3] // XYZ, Y is UP float Normal[3] float UV[2] uchar Bone Assignments[4] // a packed byte array, parsed lo order to high order float Weights[4] // first weight is lowest order byte of assignments, 0.0 (0L) weights are unassigned slots float Tangent Normal[3]
[64 bytes per vertex]
Format 7
float Position[3] // XYZ, Y is UP float Normal[3] float UV[2] uchar Bone Assignments[4] // packed byte array float Weights[4] long VertID float Tangent Normal[3] [68 bytes per vertex]
Format 7
float Position[3] // XYZ, Y is UP float Normal[3] float UV[2] long Tagval // color channel bytes uchar Bone Assignments[4] // a packed byte array float Weights[4] long VertID float Tangent Normal[3]
[72 bytes per vertex]
Reading Vertex Data Blocks
For each vertex, you need to loop through the VertexFormat as defined, and read the information in order.
The order can be completely arbitary, and varied in size.
Here is some example code in c# to do so:
for (int i = 0; i < numVerts; i++)
{
for (int j = 0; j < vertexFormats.Count; j++)
{
float x = 0;
float y = 0;
float z = 0;
vertexFormat vf = (vertexFormat)vertexFormats[j];
switch (vf.dataType)
{
case 1:
x = reader.ReadSingle();
z = reader.ReadSingle();
y = reader.ReadSingle();
sb.AppendLine(" XYZ: " + x.ToString() + " " + y.ToString() + " " + z.ToString() );
break;
case 2:
x = reader.ReadSingle();
z = reader.ReadSingle();
y = reader.ReadSingle();
sb.AppendLine(" Normal: " + x.ToString() + " " + y.ToString() + " " + z.ToString() );
break;
case 3:
float u = reader.ReadSingle();
float v = reader.ReadSingle();
sb.AppendLine(" UV: " + u.ToString() + " " + v.ToString() );
break;
case 4:
sb.AppendLine(" Bone: " + reader.ReadUInt32().ToString() );
break;
case 5:
float w1 = reader.ReadSingle();
float w2 = reader.ReadSingle();
float w3 = reader.ReadSingle();
float w4 = reader.ReadSingle();
sb.AppendLine(" Weights: " + w1.ToString() + " " + w2.ToString() + " "
+ w3.ToString() + " " + w4.ToString() );
break;
case 6:
x = reader.ReadSingle();
z = reader.ReadSingle();
y = reader.ReadSingle();
sb.AppendLine(" Tangent Normal: " + x.ToString() + " " + y.ToString() + " " + z.ToString() );
break;
case 7:
// Note, not splitting this up yet just reading an int
sb.AppendLine(" TagVal: " + reader.ReadUInt32().ToString() );
break;
case 10:
sb.AppendLine(" VertexID: " + reader.ReadUInt32().ToString() );
break;
}
}
}
Note that basically we just look through the VertexFormat, and read the data in order. There is no fixed "vertex format" version, it's all controlled via the vertexformat data.
Sims 3:Main Page -> Sims 3:PackedFileTypes
Sims 3:Main Page -> Sims 3:RCOL
