OBD:TRTA: Difference between revisions
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{{OBD_File_Header | type=TRTA | prev=TRSC | next=TSFF | name=Totoro Quaternion Body Translation Array | family=Character | align=center}} | |||
[[image:trta_a.gif]] | |||
{{Table}} | |||
{{OBD_Table_Header}} | |||
|- ALIGN=CENTER VALIGN=TOP | |||
{{OBDtr| 0x00 | res_id |FF0000| 01 62 04 00 | 1122 | 01122-.TRTA }} | |||
{{OBDtr| 0x04 | lev_id |FFFF00| 01 00 00 06 | 3 | level 3 }} | |||
{{OBDtr| 0x08 | char[22] |00FF00| AD DE... | dead | unused }} | |||
{{OBDtr| 0x1E | int16 |00FFFF| 13 00 | 19 | array size }} | |||
{{OBDtrBK|First bone offset (black outline)}} | |||
{{OBDtr| 0x00 | float |FFC8C8| 00 00 00 00 | 0 | x-offset of bone (pelvis) with respect to parent }} | |||
{{OBDtr| 0x04 | float |FFFFC8| 00 00 00 00 | 0 | y-offset of bone (pelvis) with respect to parent }} | |||
{{OBDtr| 0x08 | float |C8FFC8| 00 00 00 00 | 0 | z-offset of bone (pelvis) with respect to parent }} | |||
|} | |||
;Skeleton | |||
:The hierarchy of the bones (parents, children, siblings) is defined in the [[OBD:TRIA|TRIA]] file (linked to from the same [[OBD:TRCM|TRCM]] file as the TRTA). | |||
:If the (0°, 0°, 0°) orientation is set for every bone, then all the bones point along the X axis of the character (from right to left) and face upwards. | |||
:Viewed from above, you get something like this : "o" is a pivot (yes, the shoulders are attached to the neck), and ":)" is a smiley :) | |||
14-o-13-o-12-o-11-o 3-o-2-o-1-o ^ z | |||
| | | | ^ | ||
:)10-o-9-o-8-o-7-o-0 < < <^< < < | |||
| | x ^ | |||
18-o-17-o-16-o-15-o 6-o-5-o-4-o ^ | |||
| | ;XYZ offsets | ||
:The XYZ-offsets in the TRTA are offsets (aka "translations") of a ''bone'' relative to its ''parent'' in that system of coordinates (see above). | |||
:Thus they effectively specify the relative positions of the joints. | |||
:The different TRTA occurring in Oni are detailed [[OBD_talk:TRTA|HERE]]. | |||
;Pelvis | |||
:Pelvis is further translated with respect to the root bone by the [[OBD:TRAM/raw0x0C|height track]] of [[OBD:TRAM|TRAM]] | |||
:The root bone is translated by TRAM as well as by the physics engine (jumps, blasts). | |||
;Relevant offsets | |||
:You may notice that X and Y offset for thighs and shoulders is very small (it's the left/right i.e. Z that matters there). | |||
:For all the other bones, the offset is essentially along X (i.e. along the main axis of the bone meshes). Y and Z offsets are very small. | |||
:So X/Y offsets of shoulders and thighs can basically be set to zero, as well as Y/Z offsets of all the other bones. | |||
:A skeleton is primarily defined by the Z offsets of shoulders and thighs (broad/narrow shoulders and hips), and by the X offset (effectively, the length) of all the other bones. | |||
| | |||
{{OBD_File_Footer | type=TRTA | prev=TRSC | next=TSFF | name=Totoro Quaternion Body Translation Array | family=Character}} | |||
{{OBD}} | |||
Latest revision as of 13:20, 5 April 2021
|
|
| Offset | Type | Raw Hex | Value | Description |
|---|---|---|---|---|
| 0x00 | res_id | 01 62 04 00 | 1122 | 01122-.TRTA |
| 0x04 | lev_id | 01 00 00 06 | 3 | level 3 |
| 0x08 | char[22] | AD DE... | dead | unused |
| 0x1E | int16 | 13 00 | 19 | array size |
| First bone offset (black outline) | ||||
| 0x00 | float | 00 00 00 00 | 0 | x-offset of bone (pelvis) with respect to parent |
| 0x04 | float | 00 00 00 00 | 0 | y-offset of bone (pelvis) with respect to parent |
| 0x08 | float | 00 00 00 00 | 0 | z-offset of bone (pelvis) with respect to parent |
- Skeleton
- The hierarchy of the bones (parents, children, siblings) is defined in the TRIA file (linked to from the same TRCM file as the TRTA).
- If the (0°, 0°, 0°) orientation is set for every bone, then all the bones point along the X axis of the character (from right to left) and face upwards.
- Viewed from above, you get something like this : "o" is a pivot (yes, the shoulders are attached to the neck), and ":)" is a smiley :)
14-o-13-o-12-o-11-o 3-o-2-o-1-o ^ z
| | ^
:)10-o-9-o-8-o-7-o-0 < < <^< < <
| | x ^
18-o-17-o-16-o-15-o 6-o-5-o-4-o ^
- XYZ offsets
- The XYZ-offsets in the TRTA are offsets (aka "translations") of a bone relative to its parent in that system of coordinates (see above).
- Thus they effectively specify the relative positions of the joints.
- The different TRTA occurring in Oni are detailed HERE.
- Pelvis
- Pelvis is further translated with respect to the root bone by the height track of TRAM
- The root bone is translated by TRAM as well as by the physics engine (jumps, blasts).
- Relevant offsets
- You may notice that X and Y offset for thighs and shoulders is very small (it's the left/right i.e. Z that matters there).
- For all the other bones, the offset is essentially along X (i.e. along the main axis of the bone meshes). Y and Z offsets are very small.
- So X/Y offsets of shoulders and thighs can basically be set to zero, as well as Y/Z offsets of all the other bones.
- A skeleton is primarily defined by the Z offsets of shoulders and thighs (broad/narrow shoulders and hips), and by the X offset (effectively, the length) of all the other bones.
| ONI BINARY DATA |
|---|
| TRSC << Other file types >> TSFF |
| TRTA : Totoro Quaternion Body Translation Array |
| Character file |