CompuServe Archive

If I understand your reference to VMI's Render Ready software, I think you missed part of the implementation. I believe that there is custom microcode on the VMI card that translates the 2**24 possible colors of a pixel to a particular 2**8 blend in a 2×2 array. So your 1280x1024x8…

I think I figured out the cause of my problem distinguishing between angular dimensions of lines and those on circles and arcs. The former is group code #2, while the latter is #5 (3 pt angular dimension). With that correction, my routine *seems* to be working, though every time I…

OK, I've done some more work and my major problem boils down to this: Given the two extension lines that form the angular dimension, and the location of the dimension arc, how can one distinguish between the cases of actual >180 deg angle dimensioning (as in the case of a…

Thanks for the assist, Tony. There seem to be a number of problems with the "simple" approach. First, lets distinguish between the block def. and the insert record. For angular dim's there are 4 points in the block def. If the 1st two points (10,20,30) represent one line and the…

Tony, do you really mean that the object must be "on screen" or are you refering to its existance in the integer (redraw) database that ACAD produces?

I'm having great difficulty deciphering the DXF representation of Angular Dimensions (regular, not 3 pt.). The control points in the *D block seem to be in no fixed order and the extension points in the Insert block also seem to be interchangable. The location of the ARC (which quadrant) seems…

Thanks for the reply; I guess that I was looking at the problem a bit differently. If you have the Dbl precision FP database in systems memory, say with 32 Mbyte of systems RAM, and you can transform each entity (on the FP coprocessor) in less time than it takes…