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1 | initial version |
You can find it using rotation matrix
.
get rotation matrix from transform. Each column in matrix represent unit vector along new axis. First column represent unit vector of along new x-axis.
if m0, m1, m2 are elements of first column angle between old and new x-axis is
2 | No.2 Revision |
You can find it using rotation matrix
.
get rotation matrix from transform. Each column in matrix represent unit vector along new axis. First column represent unit vector of along new x-axis.
if m0, m1, m2 are elements of first column column, angle between old and new x-axis is