OpenEuphoria

Re: GRAPHICS.EU problems

• Posted by Mike Sabal <MikeS at NOTATIONS.COM> Sep 14, 2000
• 410 views

Thanks for bringing this to my attention.  That was one of 3 demos I couldn't
get to run easily (out of more than a dozen), but I had thought it was from the
image routines (having registered DOS/WIN but not Linux yet).  The other two were
plot3d and langwar.

Rob: may I have permission to include the DOS graphics demos in the zip file for
Linux users?

As soon as I have a chance this weekend, I'll make the fix.  I'll also try to
emulate the get_position routine; but I still believe it's for text mode only.

>>> xotron at PCOM.NET 09/14/00 01:49PM >>>
--
  Mike:

  When you run WIRE.EX in LINUX the draw_line procedure is trying
  to use FLOATING POINT NUMBERS for coordinates.

  For some reason ( which Rob might know ) the M_LINE machine procedure
  seems converts them internally to integers.

  A temporary fix until you figure out what is wrong is to use floor
  on each coordinate like the following in the draw_line procedure.


--      vga_drawline(xyarray[ctr-1][1],xyarray[ctr-1][2],xyarray[ctr][1],
--  xyarray[ctr][2])

       vga_drawline(floor(xyarray[ctr-1][1]),floor(xyarray[ctr-1][2]),
                    floor(xyarray[ctr][1]),  floor(xyarray[ctr][2]))

   This will allow WIRE.EX to run in LINUX, but I don't know if the
   other demos will have other problems.

   Bernie