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Re: how 2 compress Fat Bitmap

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W dniu czwartek, 30 marca 2017 22:50:14 UTC+2 użytkownik fir napisał:
> W dniu czwartek, 30 marca 2017 22:40:22 UTC+2 użytkownik Ed Prochak napisał:
> > On Tuesday, March 28, 2017 at 3:26:00 PM UTC-4, fir wrote:
> > > W dniu wtorek, 28 marca 2017 21:19:27 UTC+2 użytkownik fir napisał:
> > > > W dniu wtorek, 28 marca 2017 19:26:35 UTC+2 użytkownik Ed Prochak napisał:
> > > > > On Monday, March 27, 2017 at 12:13:33 PM UTC-4, fir wrote:
> > > > > > i get a little big tired when coding roguelike and
> > > > > > maybe i could rest coding a side problem 
> > > > > > 
> > > > > > in my roguelike i use now 24bpp bitmap to store a tile map, 
> > > > > > it is 2000x2000 pixels (as pixel is something like 'big meter' 
> > > > > > in game world (something like 1.5 m x 1.5 m) this would
> > > > > > be like a 3 km x 3 km square of land 
> > > > > []
> > > > > > 
> > > > > > it is 12 MB bmp file and loading it makes 1 second
> > > > > > delay at game startup (on my hdd, on some more new
> > > > > > hdd could be faster) 
> > > > > > 
> > > > > 
> > > > > []
> > > > > > the question is - what algorithm to use to pack it
> > > > > > - it could be reasonably simple to write but also maybe
> > > > > > something more effective then if i would just turn
> > > > > > colors to palette entries? 
> > > > > > 
> > > > > > 
> > > > > > what do you think?
> > > > > 
> > > > > Why don't you check out open sources for algorithms like
> > > > > jpeg compression? Sure you did not write it, but it is
> > > > > sometimes very helpful to learn from someone else's code.
> > > > > 
> > > > > ed
> > > > 
> > > > i suspect it would be to hard - (i dont wanna spend month on this topic only few spare hours maybe)
> > > > 
> > > 
> > > as to jpg anyway this is good idea, i checked how big
> > > loseless jpg would be (i assume 100% jpg quality
> > > in ifranview is looseless) -> it made 2.9 MB jpg
> > > it is it seems quite worse than simple primitive
> > > indexing.. seems jpg does not go to much well in
> > > loosles compression (or im wrong somewhere)
> > > 
> > > 
> > Earlier you said:
> > "even compressing each pixel into index form - thus reducing
> >  24 bit of color into loke 6-12 bit of index would spare to
> >  half or 1/4 of oryginal size."
> > 
> > Yet you say lossless jpeg with the same ratio (2.9/12~1/4)
> > is somehow worse.
> > 
> > Okay, I tried to help and you did look.
> > Good luck.
> >   ed
> 
> you seem to be idiot, dont you? you like to waste people time as idiots do, dont you? you should maybe use a bit of brain before and know that when i was sayin here about 
> indexing results were better than 2.9 MB (like when indexing 4 pixels at once).. read and stop playin idiot who gives idiot advices where not understanding the basic points, idiots are not welcome

ps i normallu used a word idiots for people that are genarally disabled but also here seeing such stupid comments also makes me a bit 'uneasy', idiots please stay out

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how 2 compress Fat Bitmap fir <profesor.fir@gmail.com> - 2017-03-27 09:13 -0700
  Re: how 2 compress Fat Bitmap JJ <jj4public@vfemail.net> - 2017-03-28 08:06 +0700
    Re: how 2 compress Fat Bitmap fir <profesor.fir@gmail.com> - 2017-03-28 00:43 -0700
      Re: how 2 compress Fat Bitmap fir <profesor.fir@gmail.com> - 2017-03-28 01:02 -0700
  Re: how 2 compress Fat Bitmap Ed Prochak <edprochak@gmail.com> - 2017-03-28 10:26 -0700
    Re: how 2 compress Fat Bitmap fir <profesor.fir@gmail.com> - 2017-03-28 12:19 -0700
      Re: how 2 compress Fat Bitmap fir <profesor.fir@gmail.com> - 2017-03-28 12:25 -0700
        Re: how 2 compress Fat Bitmap fir <profesor.fir@gmail.com> - 2017-03-28 12:33 -0700
        Re: how 2 compress Fat Bitmap Ed Prochak <edprochak@gmail.com> - 2017-03-30 13:40 -0700
          Re: how 2 compress Fat Bitmap fir <profesor.fir@gmail.com> - 2017-03-30 13:50 -0700
            Re: how 2 compress Fat Bitmap fir <profesor.fir@gmail.com> - 2017-03-30 13:54 -0700
              Re: how 2 compress Fat Bitmap fir <profesor.fir@gmail.com> - 2017-03-30 15:10 -0700
            Re: how 2 compress Fat Bitmap Ed Prochak <edprochak@gmail.com> - 2017-04-03 07:11 -0700
              Re: how 2 compress Fat Bitmap fir <profesor.fir@gmail.com> - 2017-04-03 08:20 -0700
    Re: how 2 compress Fat Bitmap Robert Wessel <robertwessel2@yahoo.com> - 2017-03-28 16:40 -0500
      Re: how 2 compress Fat Bitmap fir <profesor.fir@gmail.com> - 2017-03-28 15:19 -0700

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