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bittermelon bittermelon hex sticker

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Table of Contents

Please note this README is best viewed elsewhere than github.com. github.com’s default line-height setting causes distracting extraneous horizontal lines to appear when “printing” bitmaps and github.com does not allow using CSS to set a more reasonable line-height value.

Overview

Installation

remotes::install_github("trevorld/bittermelon")

Examples

Bitmap font glyphs

library("bittermelon") # remotes::install_github("trevorld/bittermelon")
font_file <- system.file("fonts/spleen/spleen-8x16.hex.gz", package = "bittermelon")
font <- read_hex(font_file)
bml <- as_bm_list("RSTATS", font = font)
# With vertical compression
bm <- bml |> bm_call(cbind) |> bm_compress("vertical")
print(bm)
                                                
██▀▀▀█▄ ▄█▀▀▀▀▀ ▀▀▀██▀▀▀▄█▀▀▀█▄ ▀▀▀██▀▀▀▄█▀▀▀▀▀ 
██   ██ ██         ██   ██   ██    ██   ██      
██▀▀▀█▄  ▀▀▀▀█▄    ██   ██▀▀▀██    ██    ▀▀▀▀█▄ 
██   ██      ██    ██   ██   ██    ██        ██ 
██   ██ ▄▄▄▄▄█▀    ██   ██   ██    ██   ▄▄▄▄▄█▀ 
                                                
                                                
# Upside down with ASCII characters
bm <- bml |>
    bm_flip("both") |>
    bm_call(cbind, direction = "RTL")
print(bm, px = px_ascii)
------------------------------------------------
------------------------------------------------
------------------------------------------------
------------------------------------------------
--@@@@@@---@@----@@---@@---@@-----@@@@@@-@@---@@
-@@--------@@----@@---@@---@@----@@------@@---@@
-@@--------@@----@@---@@---@@----@@------@@---@@
-@@--------@@----@@---@@---@@----@@------@@---@@
-@@--------@@----@@---@@---@@----@@------@@---@@
--@@@@@----@@----@@@@@@@---@@-----@@@@@---@@@@@@
------@@---@@----@@---@@---@@---------@@-@@---@@
------@@---@@----@@---@@---@@---------@@-@@---@@
------@@---@@----@@---@@---@@---------@@-@@---@@
-@@@@@@-@@@@@@@@--@@@@@-@@@@@@@@-@@@@@@---@@@@@@
------------------------------------------------
------------------------------------------------
# With a shadow effect and borders
bm <- bml |>
    bm_pad(sides = 2L) |>
    bm_shadow() |>
    bm_extend(sides = c(2L, 1L), value = 3L) |>
    bm_call(cbind) |>
    bm_pad(sides = 2L, value = 3L)
print(bm)
▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓
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We can also print colored terminal output with help of {cli}:

if (cli::num_ansi_colors() >= 16L)
    print(bm, px = " ",
          bg = c(cli::bg_br_white, cli::bg_blue, cli::bg_cyan, cli::bg_red))
plot(bm, col = c("white", "blue3", "cyan3", "red3"))

Stylized bitmap image that says 'RSTATS`.

{gridpattern} matrices

# Also supports {gridpattern} matrices
gridpattern::pattern_weave("twill_herringbone", nrow=14L, ncol = 50L) |>
    as_bm_bitmap() |>
    print(compress = "vertical")
 █▄ ▀█  █▄ ▀█  █▄ ▀█  █▄ ▀█  █▄ ▀█  █▄ ▀█  █▄ ▀█  
  █▄ ▀█  █▄ ▀█  █▄ ▀█  █▄ ▀█  █▄ ▀█  █▄ ▀█  █▄ ▀█ 
█  █▄ ▀█  █▄ ▀█  █▄ ▀█  █▄ ▀█  █▄ ▀█  █▄ ▀█  █▄ ▀█
▀▀▄▄▀▄▄▀▀▄▄▀▄▄▀▀▄▄▀▄▄▀▀▄▄▀▄▄▀▀▄▄▀▄▄▀▀▄▄▀▄▄▀▀▄▄▀▄▄▀
 ██ ▄█▀ ██ ▄█▀ ██ ▄█▀ ██ ▄█▀ ██ ▄█▀ ██ ▄█▀ ██ ▄█▀ 
██ ▄█▀ ██ ▄█▀ ██ ▄█▀ ██ ▄█▀ ██ ▄█▀ ██ ▄█▀ ██ ▄█▀ █
█ ▄█▀ ██ ▄█▀ ██ ▄█▀ ██ ▄█▀ ██ ▄█▀ ██ ▄█▀ ██ ▄█▀ ██
gridpattern::pattern_square(subtype=8L, nrow=8L, ncol = 50L) |>
    as_bm_pixmap(s, col = grDevices::rainbow(8L)) |>
    plot()

Rainbow squares

{mazing} mazes

# Also supports {mazing} mazes
set.seed(42)
m <- mazing::maze(16L, 32L)
m |> as_bm_bitmap(walls = TRUE) |>
    print(compress = "vertical")
█▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀█▀▀▀█▀▀▀▀▀█▀▀▀▀▀▀▀▀▀▀▀█▀▀▀▀▀█▀▀▀▀▀▀▀█▀▀▀▀▀▀▀█▀▀▀█ 
█ █▀▀▀▀▀▀▀▀▀█ ▀▀▀ █ ▀ █ █ █ █ ▀▀█▀▀▀▀ ▀ █▀▀ █ █▀▀ █ ▀ █▀▀▀█ █ █ █ 
█ █ ▀▀▀▀█▀▀ ▀▀▀▀█▀█▀▀▀▀ █ █ █▀▀ █▀▀▀█▀█▀▀ █▀▀▀▀ █▀▀▀▀▀█ ▀▀▀ █ █ █ 
█ █▀▀ █▀▀ █▀▀▀▀ █ █ ▀▀█▀█ ▀▀█ █▀▀ █ █ ▀ ▀▀▀ █▀▀▀▀▀▀▀▀ █ ▀▀█▀▀▀▀ █ 
█ ▀▀▀▀█ █▀█ █▀▀▀▀ █▀▀ █ █▀▀ █ █ █▀█ ▀▀█▀▀▀▀▀█ █▀█ ▀▀▀▀▀▀▀ █ █ ▀▀█ 
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█ █▀▀▀▀▀█ ▀ █▀▀ ▀▀█ ▀▀▀▀▀ █ █▀█▀▀▀▀▀▀▀▀▀▀ ▀▀█ █▀▀ █▀▀ █▀▀▀█ █▀▀ █ 
█ █ ▀▀█ █▀▀▀▀▀▀▀█ █▀▀▀▀▀█▀█ █ ▀ █▀▀▀█▀▀▀▀▀█ ▀ █▀▀ █ █▀▀ █ ▀▀█ █▀█ 
█ █▀█ █ ▀ █▀▀▀█ █ ▀▀█ █ ▀ █ █ ▀▀█ ▀▀▀ █ ▀▀▀▀▀▀▀ █ █ ▀ █▀▀▀█ █ █ █ 
█ █ █ █▀▀▀▀ █ █ ▀▀█ ▀ █ █▀▀ █▀█ █▀▀▀█ █▀▀ █▀▀▀█▀▀ █▀▀▀▀▀▀ █ ▀ █ █ 
█ ▀ █ ▀▀▀▀█ ▀▀▀▀▀ ▀▀▀▀▀▀▀ █▀▀ ▀ ▀ █ ▀▀▀ █▀▀ ▀▀▀ ▀▀▀▀▀▀▀ █ ▀▀▀▀▀ █ 
▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ 
# Can also visualize the maze solutions
pal <- grDevices::palette.colors()
m |> as_bm_pixmap(start = "top", end = "bottom",
                  col = c(pal[6L], "white", pal[7L], pal[5L])) |>
   bm_pad(sides = 1L) |>
   plot()

A maze

Sprites

# Contains some built-in farming crops sprites
crops <- farming_crops_16x16()
names(crops)
 [1] "avocado"    "cassava"    "coffee"     "corn"       "cucumber"  
 [6] "eggplant"   "grapes"     "lemon"      "melon"      "orange"    
[11] "pineapple"  "potato"     "rice"       "rose"       "strawberry"
[16] "sunflower"  "tomato"     "tulip"      "turnip"     "wheat"     
corn <- crops$corn$portrait
grapes <- crops$grapes$portrait
orange <- crops$orange$stage5
tulip <- crops$tulip$portrait
pm <- cbind(corn, grapes, orange, tulip)

We can pretty print sprites to the terminal with help of {cli}:

if (cli::is_utf8_output() && cli::num_ansi_colors() >= 256L)
    print(pm, compress = "v", bg = "white")
plot(pm)

Sprites of some food crops

Builtin Fonts

{bittermelon} has a builtin versions of the 8x16 Spleen font as well as 4x6 and 6x13 Fixed fonts.

spleen_8x16 <- read_hex(system.file("fonts/spleen/spleen-8x16.hex.gz",
                                    package = "bittermelon"))
fixed_4x6 <- read_yaff(system.file("fonts/fixed/4x6.yaff.gz",
                                   package = "bittermelon"))
fixed_5x8 <- read_yaff(system.file("fonts/fixed/5x8.yaff.gz",
                                   package = "bittermelon"))
fixed_6x13 <- read_yaff(system.file("fonts/fixed/6x13.yaff.gz",
                                    package = "bittermelon"))
as_bm_bitmap("RSTATS", font = spleen_8x16) |> bm_compress("v")
                                                
██▀▀▀█▄ ▄█▀▀▀▀▀ ▀▀▀██▀▀▀▄█▀▀▀█▄ ▀▀▀██▀▀▀▄█▀▀▀▀▀ 
██   ██ ██         ██   ██   ██    ██   ██      
██▀▀▀█▄  ▀▀▀▀█▄    ██   ██▀▀▀██    ██    ▀▀▀▀█▄ 
██   ██      ██    ██   ██   ██    ██        ██ 
██   ██ ▄▄▄▄▄█▀    ██   ██   ██    ██   ▄▄▄▄▄█▀ 
                                                
                                                
as_bm_bitmap("RSTATS", font = fixed_4x6) |> bm_compress("v")
█▀▄ ▄▀▀ ▀█▀ ▄▀▄ ▀█▀ ▄▀▀ 
█▀▄  ▀▄  █  █▀█  █   ▀▄ 
▀ ▀ ▀▀   ▀  ▀ ▀  ▀  ▀▀  
as_bm_bitmap("RSTATS", font = fixed_5x8) |> bm_compress("v")
▄▄▄   ▄▄   ▄▄▄  ▄▄   ▄▄▄  ▄▄  
█  █ ▀▄ ▀   █  █  █   █  ▀▄ ▀ 
█▀▀▄ ▄ ▀▄   █  █▀▀█   █  ▄ ▀▄ 
▀  ▀  ▀▀    ▀  ▀  ▀   ▀   ▀▀  
as_bm_bitmap("RSTATS", font = fixed_6x13) |> bm_compress("v")
                                    
█▀▀▀▄ ▄▀▀▀▄ ▀▀█▀▀  ▄▀▄  ▀▀█▀▀ ▄▀▀▀▄ 
█   █ █       █   █   █   █   █     
█▀█▀   ▀▀▀▄   █   █▄▄▄█   █    ▀▀▀▄ 
█  ▀▄ ▄   █   █   █   █   █   ▄   █ 
▀   ▀  ▀▀▀    ▀   ▀   ▀   ▀    ▀▀▀  
                                    

GNU Unifont via {hexfont}

The {hexfont} package includes a helper function unifont() which loads several GNU Unifont hex fonts as a single {bittermelon} bm_font() object. GNU Unifont is a monoscale bitmap font (8x16 and 16x16 glyphs) that pretty much covers all of the official Unicode glyphs plus several of the artificial scripts in the (Under-)ConScript Unicode Registry.

library("hexfont")
system.time(font <- unifont()) # Unifont is a **big** font
   user  system elapsed 
152.565   0.027 152.621 
length(font) |> prettyNum(big.mark = ",") # number of glyphs
[1] "123,234"
object.size(font) |> format(units = "MB") # memory used
[1] "196.5 Mb"
# Faster to load from a cache
saveRDS(font, "unifont.rds")
system.time(font <- readRDS("unifont.rds"))
   user  system elapsed 
  0.497   0.004   0.501 
# Or just load the subset of GNU Unifont you need
s <- "R很棒!"
system.time(font_s <- unifont(ucp = str2ucp(s)))
   user  system elapsed 
  0.725   0.000   0.725 
# Mandarin Chinese
as_bm_bitmap(s, font = font_s) |> bm_compress("v")
                    █ ▄▄▄▄▄▄▄      █      █                     
   ▄▄▄▄▄▄▄        ▄▀  █     █      █  ▀▀▀▀█▀▀▀▀      ▄█▄        
    █     ▀▄     ▀  █ █▀▀▀▀▀█   ▀▀▀█▀▀ ▀▀█▀▀▀▀       ███        
    █     ▄▀      ▄█  █▄▄▄▄▄█     ██▄ ▀▀█▀▀▀█▀▀      ▀█▀        
    █▀▀▀█▀      ▄▀ █  █  █  ▄▀   █ █ ▀▄▀  █  ▀▄       █         
    █    ▀▄        █  █   █▀    ▀  █    ▀▀█▀▀                   
   ▄█▄    ▄█▄      █  █ ▄  ▀▄      █  ▀▀▀▀█▀▀▀▀       █         
                   █  █▀     ▀▀    █      █                     
# Emoji
as_bm_bitmap("🐭🐲🐵", font = font) |> bm_compress("v")
  ▄▄       ▄▄           ▄▄▄            ▄▄       
▄▀  ▀▄▄▄▄▄▀  ▀▄       ▄█▀           ▄█▀██▀█▄    
█    ▀   ▀    █      ▄████       ▄▀█ ▄▄  ▄▄ █▀▄ 
▄█   ▀   ▀   █▄   ▄▄██▄█████     ▀▄█ ▀▀  ▀▀ █▄▀ 
▄█▀    ▄    ▀█▄ ▄█▄███████████     ▄▀      ▀▄   
  ▀▄  ▀▀▀  ▄▀   ▀▀▀▀▀███▀▀█████    █ ▀▄▄▄▄▀ █   
    ▀▀▄▄▄▀▀        ▄███   ████▀     ▀▀▄▄▄▄▀▀    
                  ▀▀▀     ▀▀▀                   
# Klingon
as_bm_list("", font = font) |>
    bm_pad(type = "trim", left = 1L, right = 1L) |>
    bm_call(cbind) |>
    bm_compress("v")
                                                                              
    ▄█▄ ▄▄██▀▀  ▀▀████████               ▄▀       ▄█▄    ▄█▀  ▀█▄    ▄▄       
 ▄▄██████▀            ▀██ ▀            ▄█▀       ███▀▀  ███    ██   ▀████████ 
  ▀██  ██             ▄███    ▄█      ▄██       ██▀      ▀██▄▄█▀      ██▀ ▀██ 
   ▀    █▄           ███      ███▄▄▄▄▄██      ▄███        ▀███▀      ▄█▀   █▀ 
         █▄          ▀█▄      ██▀▀▀▀▀▀███    ▄██████▄       ▀█▄     ▄█▀   █▀  
          ▀▄           ▀▀▄   ▄▀        ▀█▄         ▀▀▄        ▀▀▄  ▄▀    ▀    
                                                                              

Game Bit

I wrote {bittermelon} in order to help create Game Bit, a fixed-width bitmap font specialized for making board game diagrams. The duospaced version is called Game Bit Duo while the square monospaced version is called Game Bit Mono. Check out the Game Bit Github repo to see an extended example of using {bittermelon} to make a custom font (albeit with several glyphs adopted/adapted from GNU Unifont).

Go diagram Dominoes diagram

R packages

Python

Other

Fonts

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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