| X wing and its local coordinate system. |
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| Putting the x wing in the world -- just need transformation from x wing's coordinate system (UVN) to world coordinate system (XYZ). |
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| R2D2 and his local coordinate system. |
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| Putting R2D2 in the back of the x wing requires a transformation from R2D2's coordinate system to that of the X wing. |
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| A snake can be defined as an extrusion with a varying scale factor (to make the head and tail), where the spine is just a sine curve. |
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