On 12/01/2014 11:11 AM, Bertho Stultiens wrote: > All CNC machines use turtle graphics in 2D, 3D, 4D, etc. No, turtle graphics is a scheme where the coordinate system is centered on the turtle, and everything is relative to which way the turtle is pointing now. So, if the turtle makes a 90 degree turn to the left, and then moves forward, it will go in a different direction than it would have before turning. So, the only operations permitted are turning left or right by some angle, and moving forward in whatever way the turtle is pointing.
Most CNC machines have a fixed coordinate system, with an X axis, and a Y (or Z) axis that is 90 degrees to the X. There is no operation to turn left or right, and a +X move will always be in the same direction. Jon ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
