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Thread: Letting users draw an ANTIALIASED line

  1. Jun 18th, 2001, 11:53 AM #1
    ozymandiaz2
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    Question Letting users draw an ANTIALIASED line

    I am making a comic-book annotation program. The user needs to be able to draw arrows on top of a jpeg. Using the line command is useless, since it makes ugly jagged lines. I need a good antialiased line like the one that is drawn in Photoshop.

    something like aa_line(20,100,50,150)
    should draw aline from x20y100 to x50y150
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  2. Jun 20th, 2001, 06:59 AM #2
    kedaman
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    there's no aa_line functions around, but you can still do it.
    Antialias means also the line is blended to it's background, the distance to the line measuring the alpha level for alphablendending.
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  3. Jun 20th, 2001, 02:35 PM #3
    Mad Compie
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    I also posted this question some time ago.

    Please take a look at http://161.58.186.97/showthread.php?...highlight=line

    Another link to "Wu-lines" is http://freespace.virgin.net/hugo.eli...s/x_wuline.htm

    Unfortunately I did not have the time yet to figure out the algorithm.
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  4. Jun 21st, 2001, 11:00 AM #4
    Jotaf98
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    Yeah I tried that a while ago... d*mn, I haven't been able to convert a single sample program from pascal or c or c++ that worked

    So I don't have access to most good techniques because most of them are written in those languages
    I just have to wait until someone else finds them and converts them to VB
    Last edited by Jotaf98; Jun 21st, 2001 at 11:15 AM.
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