HPGL 3D compucutter,etc

Ballendo & others

I have been working on the some of the HPGL 3D extensions and trying to provide a fairly simple solution to the development of 3D HPGL code. I took an existing configuration in Vector and made a couple of changes to format the data into something like the 3A code that Ron mentioned in his post about Compucut.

1)This first is a simple 4 inch square in the X-Y Plane

3A4.000,0.000,-1.000
3A4.000,4.000,-1.000
3A0.000,4.000,-1.000
3A0.000,0.000,-1.000

2) This is the same rectangle rotated 25 degrees about the Y axis

3A0.000,0.000,-1.000
3A3.625,0.000,-2.690
3A3.625,4.000,-2.690
3A0.000,4.000,-1.000

3) This is the same data as 2), but scaled for 4000 steps per inch( 1/4 of one thousandth resolution), and with decimals removed.

3A0000,0000,-4000000
3A14500925,0000,-10761892
3A14500925,16000000,-10761892
3A0000,16000000,-4000000

From what I have seen of the Roland data, it may be able to take the actual coordinates as in the first example, but the other 3D plotter drivers seem to require that the steps be scaled into the actual values required for the stepper counts.

It would seem that this could be used to directly drive controllers such as Galil and LPT indexer, and also as input to any of the programs that take 3D HPGL for input, compucutter, Others?




Best Regards, Fred Smith- IMService
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