OBD:TRTA: Difference between revisions

OBD:TRTA (view source)

Revision as of 00:33, 17 May 2006

1,792 bytes added , 17 May 2006

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-<CENTER>[[OBD:TRSC|<==]] <FONT SIZE=5>TRTA</FONT> [[OBD:TSFF|==>]]<BR>
+<CENTER>[[OBD:TRSC|TRSC]] << [[OBD:File types|Other file types]] >> [[OBD:TSFF|TSFF]]
-<FONT SIZE=3>Totoro Quaternion Body Translation Array</FONT><br>
+<br><FONT SIZE=5>TRTA : Totoro Quaternion Body Translation Array</FONT>
-<FONT SIZE=2>[[OBD:Filr types/Character|Character file]]</FONT></CENTER>
+<BR><FONT SIZE=2>[[OBD:File types/Character|Character file]]</FONT></CENTER>
@@ Line 30: / Line 30: @@
 | BGCOLOR="#00FFFF" | 13 00
 | 19
-| ALIGN=LEFT | 19 packages follow (one package is edged in black)
+| ALIGN=LEFT | 19 bone offsets in array (first bone offset is outlined in black)
 |- ALIGN=CENTER VALIGN=TOP BGCOLOR="#000000"
-| COLSPAN=3 | <FONT SIZE=2 COLOR="#FFFFFF">Below follows the first package.</FONT>
+| COLSPAN=3 | <FONT SIZE=2 COLOR="#FFFFFF">Structure of a bone offset (example : pelvis)</FONT>
 |- ALIGN=CENTER VALIGN=TOP BGCOLOR="#FFEEDD"
 | BGCOLOR="#FFC8C8" | 00 00 00 00
 | 0
-| ALIGN=LEFT | x-position of the bodypart in connection to the [[OBD:TRIA|TRIA]] file
+| ALIGN=LEFT | x-offset of bone (pelvis) with respect to parent
 |- ALIGN=CENTER VALIGN=TOP BGCOLOR="#FFEEDD"
 | BGCOLOR="#FFFFC8" | 00 00 00 00
 | 0
-| ALIGN=LEFT | y-position (height) of the bodypart in connection to the [[OBD:TRIA|TRIA]] file
+| ALIGN=LEFT | y-offset of bone (pelvis) with respect to parent
 |- ALIGN=CENTER VALIGN=TOP BGCOLOR="#FFEEDD"
 | BGCOLOR="#C8FFC8" | 00 00 00 00
 | 0
-| ALIGN=LEFT | z-position of the bodypart in connection to the [[OBD:TRIA|TRIA]] file
+| ALIGN=LEFT | 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 (yeah, the shoulders are attached to the neck), and ":)" is a smiley :)
+-o-14-o-13-o-12-o  4-o-3-o-2-o       ^ z
+                   |            |       ^
+            :)11-o-10-o-9-o-8-o-1  < < <^< < <
+                   |            |   x   ^
+-o-18-o-17-o-16-o  7-o-6-o-5-o       ^
+;XYZ offsets
+:The xyz-offsets in the TRIA 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.
+;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).
+:''Maybe'' [[OBD:TRAM/raw0x34#Compression_size_16|overlay TRAMs]] generate extra translations of the bones, too.
+;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.
 <HR>
-<CENTER>[[OBD:TRSC|<==]] <B>TRTA File</B> [[OBD:TSFF|==>]]</CENTER>
+<CENTER>[[OBD:TRSC|TRSC]] << '''TRTA''' >> [[OBD:TSFF|TSFF]]</CENTER>
 <HR>
-[[Main Page]] >> [[OBD:Oni Binary Data|Oni Binary Data]] >> [[OBD:File types|File Types]] >> TRTA File
+[[Main Page]] >> [[OBD:Oni Binary Data|Oni Binary Data]] >> [[OBD:File types|File types]] >> TRTA