Kenneth Lerman wrote: > If you are going to do that, it shouldn't be a "translation matrix"; it > should be a "transform matrix". That would be a general affine > transformation. That would provide translation, rotation, and skew. So, if > your X and Y axes weren't exactly perpendicular, that could be corrected. > We might want to require that Z be perpendicular to X and Y for a mill. It > wouldn't make sense to drill holes where it was not. > > To me, the big implementation issue has to do with the display. Do you show > the G code coordinates or the transformed value? The transformed value. You can always set EMC to show machine coords. But, having the display show in the same coord system you enter positions in is the only thing that makes sense. Can the user at the > interface (Axis or whatever) choose which one is displayed? > > In any event, the current transformation matrix should be stored as a series > parameters (in the gcode sense). Absolutely.
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