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divisions.txt
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divisions.txt
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"Divisions" mainly refers to graphics characters that split he cell in two
areas, usually along a straight line. Some related characters (such as
hollow versions of some triangles) are also included.
Orthogonal divisions that align with 2x2, 2x3 and 2x4 grids are in
grids.txt. The characters here are non-orthogonal and/or non-aligning.
Geometric shapes not aligned with cell borders are in shapes.txt.
Videotex standardizes a large set of these characters.
Summary of these from CCITT recommendation T.101:
- "Block mosaics" (MG00..MG32): 2x3 grids
- "Sub cell aligned smooth mosaics" (SG01..SG56): non-orthogonal division
characters that align with the points of the 2x3 grid.
- "General smooth mosaics" (MS01..MS31): miscellaneous characters that
don't fit in the MG and SG ranges:
- 2x2 grids
- Non-orthogonal divisions aligning with 2x2 grid (1/2 and 1/4 cell
diagonals)
- Centered 1/4-cell rectangles aligned on top and bottom
- Left and right half ovals (outlined, solid and inverse versions)
- Full-cell isosceles triangles
- Middle pieces of three-cell isosceles triangles
- Two filled crosses (cell contains two isosceles triangles facing each
other)
Triangle-based characters primarily by the dimensions of the minority-color
orthogonal subcell divided by the triangle:
- Right-angled triangles: (ordered LowRight, LowLeft, UpLeft, UpRight;
inverse series follows positive series, rastershades follow inverse)
- 1/1 (1/1 x 1/1)
- 2/3 (1/1 x 2/3)
- 1/2
- 1/1 x 1/2
- 1/2 x 1/1
- 1/3
- 2/3 x 1/2
- 1/3 x 1/1
- 1/4 (1/2 x 1/2)
- 1/6 (1/2 x 1/3)
- Middle part of right-angled triangle
- Isosceles triangles
- 1/1
- 1/2
- 1/1 x 1/2
- 1/2 x 1/1
- Middle part of isosceles triangle
- Opposing isosceles triangles
======================== RATIO BLOCKS =============================
The Unicode set apparently comes from the NEC PC character set via JIS/BIG5.
The originals are in 8x16 / 16x16, so they're trivial to implement in 8x8.
U+2580
VEC rect(0,0,96,midy)
8x8
########
########
########
########
........
........
........
........
U+2581
VEC rect(0,96,96,96-12)
8x8
........
........
........
........
........
........
........
########
U+2582
VEC rect(0,96,96,96-12*2)
8x8
........
........
........
........
........
........
########
########
U+2583
VEC rect(0,96,96,96-12*3)
8x8
........
........
........
........
........
########
########
########
U+2584
VEC rect(0,96,96,96-12*4)
8x8
........
........
........
........
########
########
########
########
U+2585
VEC rect(0,96,96,96-12*5)
8x8
........
........
........
########
########
########
########
########
U+2586
VEC rect(0,96,96,96-12*6)
8x8
........
........
########
########
########
########
########
########
U+2587
VEC rect(0,96,96,96-12*7)
8x8
........
########
########
########
########
########
########
########
U+2588
VEC rect(0,0,96,96)
8x8
########
########
########
########
########
########
########
########
U+2589
VEC rect(0,0,96-12*1,96)
8x8
#######.
#######.
#######.
#######.
#######.
#######.
#######.
#######.
U+258A
VEC rect(0,0,96-12*2,96)
8x8
######..
######..
######..
######..
######..
######..
######..
######..
U+258B
VEC rect(0,0,96-12*3,96)
8x8
#####...
#####...
#####...
#####...
#####...
#####...
#####...
#####...
U+258C
VEC rect(0,0,96-12*4,96)
8x8
####....
####....
####....
####....
####....
####....
####....
####....
U+258D
VEC rect(0,0,96-12*5,96)
8x8
###.....
###.....
###.....
###.....
###.....
###.....
###.....
###.....
U+258E
VEC rect(0,0,96-12*6,96)
8x8
##......
##......
##......
##......
##......
##......
##......
##......
U+258F
VEC rect(0,0,12,96)
8x8
#.......
#.......
#.......
#.......
#.......
#.......
#.......
#.......
U+2590
VEC rect(48,0,96,96)
8x8
....####
....####
....####
....####
....####
....####
....####
....####
U+2594
VEC rect(0,0,96,12)
8x8
########
........
........
........
........
........
........
........
U+2595
VEC rect(96-12,0,96,96)
8x8
.......#
.......#
.......#
.......#
.......#
.......#
.......#
.......#
Unicode (following JIS and BIG5) lacked the right and top ratio blocks until
version 13.
U+E100 RIGHT ONE QUARTER BLOCK
VEC rect(96-12*2,0,96,96)
8x8
......##
......##
......##
......##
......##
......##
......##
......##
U+E101 RIGHT THREE EIGHTS BLOCK
VEC rect(96-12*3,0,96,96)
8x8
.....###
.....###
.....###
.....###
.....###
.....###
.....###
.....###
U+E102 RIGHT FIVE EIGHTS BLOCK
VEC rect(96-12*5,0,96,96)
8x8
...#####
...#####
...#####
...#####
...#####
...#####
...#####
...#####
U+E103 RIGHT THREE QUARTERS BLOCK
VEC rect(96-12*6,0,96,96)
8x8
..######
..######
..######
..######
..######
..######
..######
..######
U+E104 RIGHT SEVEN EIGHTS BLOCK
VEC rect(96-12*7,0,96,96)
8x8
.#######
.#######
.#######
.#######
.#######
.#######
.#######
.#######
U+E105 UPPER ONE QUARTER BLOCK
VEC rect(0,0,96,12*2)
8x8
########
########
........
........
........
........
........
........
U+E106 UPPER THREE EIGHTS BLOCK
VEC rect(0,0,96,12*3)
8x8
########
########
########
........
........
........
........
........
U+E107 UPPER FIVE EIGHTS BLOCK
VEC rect(0,0,96,12*5)
8x8
########
########
########
########
########
........
........
........
U+E108 UPPER THREE QUARTERS BLOCK
VEC rect(0,0,96,12*6)
8x8
########
########
########
########
########
########
........
........
U+E109 UPPER SEVEN EIGHTS BLOCK
VEC rect(0,0,96,12*7)
8x8
########
########
########
########
########
########
########
........
Unicode 13 mapping:
U+1FB82 = E105
U+1FB83 = E106
U+1FB84 = E107
U+1FB85 = E108
U+1FB86 = E109
U+1FB87 = E100
U+1FB88 = E101
U+1FB89 = E102
U+1FB8A = E103
U+1FB8B = E104
Some of these pieces exist as half-shaded in PETSCII and Amstrad CPC. The
C-64 glyph is given a separate position because Amstrad CPC differentiates
1x1 and 2x2 full-block medium shades.
U+E10A UPPER HALF MEDIUM SHADE
VEC rect_shade(0,0,96,48)
8x8
#.#.#.#. Amstrad CPC / Sharp MZ.
.#.#.#.#
#.#.#.#.
.#.#.#.#
........
........
........
........
8x16
#.#.#.#.
.#.#.#.#
#.#.#.#.
.#.#.#.#
#.#.#.#.
.#.#.#.#
#.#.#.#.
.#.#.#.#
........
........
........
........
........
........
........
........
U+E10B LOWER HALF MEDIUM SHADE
VEC rect_shade(0,48,96,96)
8x8
........ Amstrad CPC / Commodore PET/VIC-20 / Sharp MZ.
........
........
........
#.#.#.#.
.#.#.#.#
#.#.#.#.
.#.#.#.#
8x16
........
........
........
........
........
........
........
........
#.#.#.#.
.#.#.#.#
#.#.#.#.
.#.#.#.#
#.#.#.#.
.#.#.#.#
#.#.#.#.
.#.#.#.#
U+E10C LEFT HALF MEDIUM SHADE
VEC rect_shade(0,0,48,96)
8x8
#.#..... Amstrad CPC / Sharp MZ.
.#.#....
#.#.....
.#.#....
#.#.....
.#.#....
#.#.....
.#.#....
8x16
#.#.....
.#.#....
#.#.....
.#.#....
#.#.....
.#.#....
#.#.....
.#.#....
#.#.....
.#.#....
#.#.....
.#.#....
#.#.....
.#.#....
#.#.....
.#.#....
U+E10D RIGHT HALF MEDIUM SHADE
VEC rect_shade(48,0,96,96)
8x8
....#.#. Amstrad CPC / Sharp MZ.
.....#.#
....#.#.
.....#.#
....#.#.
.....#.#
....#.#.
.....#.#
8x16
....#.#.
.....#.#
....#.#.
.....#.#
....#.#.
.....#.#
....#.#.
.....#.#
....#.#.
.....#.#
....#.#.
.....#.#
....#.#.
.....#.#
....#.#.
.....#.#
U+E10E UPPER HALF CHECKER BOARD FILL (no unicode)
VEC rect_checkerboard(0,0,96,48)
8x8
##..##.. Included for symmetry.
##..##..
..##..##
..##..##
........
........
........
........
U+E10F LOWER HALF CHECKER BOARD FILL (no unicode)
VEC rect_checkerboard(0,48,96,96)
8x8
........ Commodore 64.
........
........
........
##..##..
##..##..
..##..##
..##..##
U+E110 LEFT HALF CHECKER BOARD FILL (no unicode)
VEC rect_checkerboard(0,0,48,96)
8x8
##...... Commodore 64.
##......
..##....
..##....
##......
##......
..##....
..##....
U+E111 RIGHT HALF CHECKER BOARD FILL (no unicode)
VEC rect_checkerboard(0,0,48,96)
8x8
....##.. Included for symmetry.
....##..
......##
......##
....##..
....##..
......##
......##
Unicode 13:
U+1FB8C = E10C
U+1FB8D = E10D
U+1FB8E = E10A
U+1FB8F = E10B
U+1FB91 INV 1FB8F
U+1FB92 INV 1FB8E
U+1FB93 INV 1FB8D
U+1FB94 INV 1FB8C
U+XTND = 1FB91
U+XTND = 1FB92
U+XTND = 1FB93
U+XTND = 1FB94
=================== FULL-CELL RIGHT-ANGLED TRIANGLES ======================
Even though these characters are usually implemented as non-full-block in
modern fonts, they are extensively used as full-block in Taiwanese BBS art.
The characters are full-block in WenQuanYi HenZei Mono and the NEC PC fonts.
They are therefore strongly identified with similar characters in Western
8-bit computers (Commodore, Amstrad, Atari) and Videotex.
Note that the CJK characters are full-width, ours are half-width.
Videotex smooth mosaics can be used to construct the full-width characters.
U+25E2
VEC poly(0,96,96,96,96,0)
8x8
.......# Amstrad CPC / Atari 400/800. C-64 uses inverted block.
......##
.....###
....####
...#####
..######
.#######
########
U+25E3 FLIPX 25E2
U+25E4 FLIPY 25E3
U+25E5 FLIPY 25E2
For consistency with other black-white pairs, the hollow glyphs are directly
derived from the solid ones. However, there are fonts that implement the
hollow variants as non-fullblock even though the solid variants are
fullblock.
U+25F8
VEC poly(96,0,0,0,0,96)
VEC poly_erase(96-slw-slh,slh,slw,slh,96-slh,96-slw-slh)
8x8
########
##...##.
##..##..
##.##...
####....
###.....
##......
#.......
U+25F9 FLIPX 25F8
U+25FA FLIPY 25F8
U+25FF FLIPX 25FA
Amstrad CPC and Sharp MZ have half-raster versions of the diagonal
triangles.
U+E112 MEDIUM-SHADED LOWER RIGHT TRIANGLE
VEC poly_shade(96,0,0,96,96,96)
8x8
........ Sharp MZ. Amstrad CPC has an incompatible pattern.
.......#
......#.
.....#.#
....#.#.
...#.#.#
..#.#.#.
.#.#.#.#
8x16
........
.......#
......#.
.......#
......#.
.....#.#
....#.#.
.....#.#
....#.#.
...#.#.#
..#.#.#.
...#.#.#
..#.#.#.
.#.#.#.#
#.#.#.#.
.#.#.#.#
U+E113 MEDIUM-SHADED LOWER LEFT TRIANGLE
VEC poly_shade(0,0,0,96,96,96)
8x8
........ Sharp MZ. Amstrad CPC has an incompatible pattern.
#.......
.#......
#.#.....
.#.#....
#.#.#...
.#.#.#..
#.#.#.#.
8x16
#.......
........
#.......
.#......
#.#.....
.#......
#.#.....
.#.#....
#.#.#...
.#.#....
#.#.#...
.#.#.#..
#.#.#.#.
.#.#.#..
#.#.#.#.
.#.#.#.#
U+E114 MEDIUM-SHADED UPPER LEFT TRIANGLE
VEC poly_shade(96,0,0,0,0,96)
8x8
#.#.#.#. Amstrad CPC / Sharp MZ.
.#.#.#..
#.#.#...
.#.#....
#.#.....
.#......
#.......
........
8x16
#.#.#.#.
.#.#.#.#
#.#.#.#.
.#.#.#..
#.#.#...
.#.#.#..
#.#.#...
.#.#....
#.#.....
.#.#....
#.#.....
.#......
#.......
.#......
#.......
........
U+E115 MEDIUM-SHADED UPPER RIGHT TRIANGLE
VEC poly_shade(0,0,96,0,96,96)
8x8
#.#.#.#. Amstrad CPC / Sharp MZ.
.#.#.#.#
..#.#.#.
...#.#.#
....#.#.
.....#.#
......#.
.......#
8x16
#.#.#.#.
.#.#.#.#
..#.#.#.
.#.#.#.#
..#.#.#.
...#.#.#
....#.#.
...#.#.#
....#.#.
.....#.#
......#.
.....#.#
......#.
.......#
........
.......#
U+1FB9C = E114
U+1FB9D = E115
U+1FB9E = E112
U+1FB9F = E113
================= 2/3-CELL RIGHT-ANGLED TRIANGLES =========================
Corresponding Videotex characters are:
SG04 SG10 SG19 SG25 SG32 SG38 SG46 SG52.
U+LR23
VEC poly(96,32,0,96,96,96)
8x8
........
........
.......#
......##
....####
...#####
..######
.#######
8x16
........
........
........
........
........
........
.......#
......##
......##
.....###
....####
...#####
...#####
..######
.#######
.#######
U+LL23 FLIPX LR23
U+UL23 FLIPY LL23
U+UR23 FLIPX UL23
===================== HALF-CELL RIGHT-ANGLED TRIANGLES =====================
Corresponding Videotex characters are:
SG05 SG11 SG18 SG24 SG33 SG39 SG47 SG53.
Unicode 13 fails to include these.
U+LRH12 "HORIZONTAL" (1/1 x 1/2)
VEC poly(96,48,0,96,96,96)
8x8
........
........
........
........
......##
....####
..######
########
8x16
........
........
........
........
........
........
........
........
.......#
......##
.....###
....####
...#####
..######
.#######
########
U+LLH12 FLIPX LRH12
U+ULH12 FLIPY LLH12
U+URH12 FLIPX ULH12
U+E11E = LRH12 LOWER RIGHT HORIZONTAL HALF-CELL TRIANGLE
U+E11F = LLH12 LOWER LEFT HORIZONTAL HALF-CELL TRIANGLE
U+E120 = ULH12 UPPER LEFT HORIZONTAL HALF-CELL TRIANGLE
U+E121 = URH12 UPPER RIGHT HORIZONTAL HALF-CELL TRIANGLE
U+E122 INV LRH12 INVERSE LOWER RIGHT HORIZONTAL HALF-CELL TRIANGLE
U+E123 INV LLH12 INVERSE LOWER LEFT HORIZONTAL HALF-CELL TRIANGLE
U+E124 INV ULH12 INVERSE UPPER LEFT HORIZONTAL HALF-CELL TRIANGLE
U+E125 INV URH12 INVERSE UPPER RIGHT HORIZONTAL HALF-CELL TRIANGLE
U+LRV12 "VERTICAL" (1/2 x 1/1)
VEC poly(96,0,48,96,96,96)
8x8
.......#
.......#
......##
......##
.....###
.....###
....####
....####
U+LLV12 FLIPX LRV12
U+ULV12 FLIPY LLV12
U+URV12 FLIPX ULV12
U+LRV12I
8x8
########
#######.
#######.
######..
######..
######..
#####...
#####...
U+LLV12I FLIPX LRV12I
U+ULV12I FLIPY LLV12I
U+URV12I FLIPX ULV12I
===================== 1/3-CELL RIGHT-ANGLED TRIANGLES =====================
Corresponding Videotex characters are:
SG02 SG08 SG21 SG27 SG30 SG36 SG44 SG50 (horizontal) and
SG03 SG09 SG20 SG26 SG31 SG37 SG45 SG51 (vertical).
U+LRH13 HORIZONTAL (1/1 x 1/3)
VEC poly(96,64,0,96,96,96)
8x8
........
........
........
........
........
......##
...#####
########
8x16
........
........
........
........
........
........
........
........
........
........
........
.......#
.....###
....####
..######
.#######
U+LLH13 FLIPX LRH13
U+ULH13 FLIPY LLH13
U+URH13 FLIPX ULH13
U+LRV13 VERTICAL (1/2 x 2/3)
VEC poly(96,32,48,96,96,96)
8x8
........
........
.......#
......##
......##
.....###
....####
....####
8x16
........
........