Pavlinho
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I downloaded this Granny plugin for Maya 6.0 from some website or user; I've forgotten where I found the link. During the export of the final model to GR2, a familiar window pops up. According to the tutorial, plus my own adjustments (maybe this is unnecessary, I'm not sure, but it's more convenient for me), I remove the 4 bottom items from the export (by unchecking all the boxes): materials, meshes, models, and textures... Screenshot 1
Then comes the most interesting and important part... Screenshots 2 and 2-2 show that we select animations, and slightly move the slider to the right and down, to the three items with checkboxes, highlighted in the picture. If we only uncheck the first box, the model doesn't seem to be distorted, but it's rotated backward by 90 degrees, as if it's lying on its back...
Looking at screenshots 3 and 3-3, we see that by unchecking only the second box (the same three items in the animation section), we get a model that isn't lying down, i.e., it's not rotated backward by 90 degrees, but it is distorted (just take a closer look at the jaw)...
Finally, we draw a conclusion... Screenshots 4 and 4-4 show that by unchecking both boxes at the same time, we get a normal model and animation...
As I understand it, the third checkbox is responsible for compressing the animation data, and it doesn't seem to break the animation, so I think it can be left checked.
Then comes the most interesting and important part... Screenshots 2 and 2-2 show that we select animations, and slightly move the slider to the right and down, to the three items with checkboxes, highlighted in the picture. If we only uncheck the first box, the model doesn't seem to be distorted, but it's rotated backward by 90 degrees, as if it's lying on its back...
Looking at screenshots 3 and 3-3, we see that by unchecking only the second box (the same three items in the animation section), we get a model that isn't lying down, i.e., it's not rotated backward by 90 degrees, but it is distorted (just take a closer look at the jaw)...
Finally, we draw a conclusion... Screenshots 4 and 4-4 show that by unchecking both boxes at the same time, we get a normal model and animation...
As I understand it, the third checkbox is responsible for compressing the animation data, and it doesn't seem to break the animation, so I think it can be left checked.