Hmz: Re: drawLine is f*cked?

From: Marc Maurer (j.m.maurer@student.utwente.nl)
Date: Thu May 29 2003 - 18:13:17 EDT

  • Next message: Hubert Figuiere: "Re: Hmz: Re: drawLine is f*cked?"

    Our Win32 drawLine function DOES draw 5 pixels in this case, and the
    GDK/X function only draws 4!

    Since I'm trying to pixel-perfect the rulers, I get the following
    differences:

    the (almost) pixel perfect GDK version:
    http://pino.frontisterion.nl/uwog/rulers_gdk.png

    and the win32 version:
    http://pino.frontisterion.nl/uwog/rulers_win32.png

    note that the ruler code is 100% XP, so this _is_ a bug, and all drawing
    functions should act the same.

    Which one should we adopt: the (IMO good working) win32 "routine", or
    the GDK one?

    Marc

    Op do 29-05-2003, om 12:32 schreef Marc Maurer:
    > Op do 29-05-2003, om 12:03 schreef Hubert Figuiere:
    > > On jeudi, mai 29, 2003, at 03:39 Europe/Paris, Marc Maurer wrote:
    > >
    > > > Just to be sure I'm not doing stange things here at 4 am: when I have
    > > > this line of code
    > > >
    > > > m_pG->drawLine(left,top,left+m_pG->tlu(4),top);
    > > >
    > > > I expect a line of _____5______ pixels to be drawn, right?
    > > >
    > > > If so, then GR_UnixGraphix->drawLine is fscked (and since it passes
    > > > direct to GDK, GDK is fscked), since it only draws 4. I don't believe
    > > > what I'm writing here, so I want to be sure I don't miss anything...
    > >
    > > + 4 is 4 pixels :-)
    > > It works the way it should :-)
    >
    > Why? When I draw a line from, say x coord 10 to 10+4=14, that's 5 pixels: 10, 11, 12, 13 and 14
    >
    > Marc 

    -- 
Marc Maurer <j.m.maurer@student.utwente.nl>

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