| 摘要 |
PURPOSE:To realize the quick three-dimensional coordinate conversion by performing the primary coordinate conversion through the coordinate rotation with a certain coordinate axis of the old coordinates defined by a rotary axis and then rotating the coordinates again with a coordinate axis different from the previous one defined as a rotary axis among those converted coordinates axes for execution of the secondary coordinate conversion. CONSTITUTION:The three-dimensional coordinate conversion is performed by deciding a coordinate axis Z0 of the old coordinates together with the rotation of an axis B carried out by a degree equal to an optional rotational angle phiB (phi1) and then deciding a coordinate axis YB (Y1) or XB (X1) of a rotary axis for rotation of an axis A given by a degree equal to an optional rotational angle phiA (phi2) via two set coordinate axis and two set rotational angles. Therefore, the primary coordinate conversion, the secondary coordinate conversion and the shift of an original point can be attained just by setting two rotary axes, two rotational angles and an original point shift vector which are easily held without calculating a conventional abstract batch converting rotary axis. As a result, the quick and easy-to-handle three-dimensional coordinate conversion is attained.
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