AT-ST and AT-AT #3

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JackCarterSmith · 2022-07-28T18:22:01+02:00

JackCarterSmith commented

2022-07-28 18:22:01 +02:00

AT-ST and AT-AT are different from the others models.

Firstly, the position of object-parts are not relative to object itself. Instead all parts are bound to 0,0,0 relative coordinate. Maybe the unknown datas can reveal some details about a transform matrix or others.
Secondarily, HOB file doesn't come alone: extra files (start, stop and walk) seem to be used for advanced animation processing. This can be explained when playing with CHICKEN cheat code and the animation speed varies according to the joystick push force.

In few words: keep looking on unknown datas

AT-ST and AT-AT are different from the others models. * Firstly, the position of object-parts are not relative to object itself. Instead all parts are bound to 0,0,0 relative coordinate. Maybe the *unknown datas* can reveal some details about a **transform matrix** or others. * Secondarily, HOB file doesn't come alone: extra files (start, stop and walk) seem to be used for advanced animation processing. This can be explained when playing with CHICKEN cheat code and the animation speed varies according to the joystick push force. In few words: keep looking on unknown datas

JackCarterSmith commented

2022-07-28 19:07:21 +02:00

For the first point, the transform matrix have been added in the last commit (ea59163941).
Seem only present in AT-ST and AT-AT object.

For the first point, the transform matrix have been added in the last commit (ea59163941). Seem only present in AT-ST and AT-AT object.

JackCarterSmith added the

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label 2022-08-20 13:31:22 +02:00

JackCarterSmith commented

2023-09-18 19:58:22 +02:00

New update on commit 1deb5eae2c and 9e551619a1.

4 transform vector have been isolated:

Offset transform, who instruct translation of origin point from the current origin sub-part (parent dependent);
Scale transform, without specific notes;
Rotation transform, but don't really known the correct value in relation to vertices position (need more tests)
Translation transform, same as rotation.

As the OBJ exporter use a ratio of 1/1024 for the vertices, I need to verify if the transforms need some ratio too.

New update on commit 1deb5eae2c and 9e551619a1. 4 transform _vector_ have been isolated: - **Offset** transform, who instruct translation of origin point from the current origin sub-part (parent dependent); - **Scale** transform, without specific notes; - **Rotation** transform, but don't really known the correct value in relation to vertices position (need more tests) - **Translation** transform, same as rotation. As the OBJ exporter use a ratio of 1/1024 for the vertices, I need to verify if the _transforms need some ratio_ too.

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Reference: JCS-Prod/RSE-Model#3