96 lines
2.0 KiB
Lua
Executable File
96 lines
2.0 KiB
Lua
Executable File
#!/usr/bin/env lua5.1
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-- -*- coding: utf-8 -*-
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dofile("init.lua")
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dofile("tga_encoder.lua")
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font_1 = unicode_text.hexfont(
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{
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kerning = true,
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}
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)
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font_1:load_glyphs(
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io.lines("/usr/share/unifont/unifont.hex")
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)
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font_1:load_glyphs(
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io.lines("U+FFFD.hex")
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)
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-- The following text purposely contains glyphs not in unifont.hex, to
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-- show that these are rendered like U+FFFD REPLACEMENT CHARACTER (<28>).
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local text = "ABC... 123!!! (*ˊᗜˋ*)/ᵗᑋᵃᐢᵏ ᵞᵒᵘ* 😁\
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\
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U+0077 w LATIN SMALL LETTER W\
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U+00F0 ð LATIN SMALL LETTER ETH\
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U+2665 ♥ BLACK HEART SUIT\
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U+10348 𐍈 GOTHIC LETTER HWAIR"
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local pixels = font_1:render_text(text)
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local image = tga_encoder.image(pixels)
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image:save("test.tga")
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font_2 = unicode_text.hexfont(
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{
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background_color = { 1 },
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foreground_color = { 0 },
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}
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)
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font_2:load_glyphs(
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io.lines("/usr/share/unifont/unifont.hex")
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)
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font_2:load_glyphs(
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io.lines("unifont_upper.hex")
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)
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local file = io.open("UTF-8-demo.txt")
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-- encode image with colormap (palette)
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tga_encoder.image(
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font_2:render_text(
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file:read("*all")
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)
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):save(
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"UTF-8-demo.tga",
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{
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colormap = {
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{ 0xFF, 0xFF, 0xFF },
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{ 0x00, 0x00, 0xFF },
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}
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}
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)
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file:close()
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font_2.background_color = { 0, 0, 0 }
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font_2.foreground_color = { 255, 255, 255 }
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font_2.tabulator_size = 4 * 8
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local file = io.open("example.txt")
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local text = file:read("*all")
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file:close()
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local pixels = font_2:render_text(text)
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-- colorize text pixels
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for h = 1, #pixels do
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for w = 1, #pixels[h] do
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local pixel = pixels[h][w]
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if (
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255 == pixel[1] and
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255 == pixel[2] and
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255 == pixel[3]
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) then
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pixel = {
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( h + w ) % 128 + 128,
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( h % w ) % 128 + 128,
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( h - w ) % 128 + 128,
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}
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end
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pixels[h][w] = pixel
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end
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end
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-- encode image with 15-bit colors
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tga_encoder.image(pixels):save(
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"example.tga",
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{
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color_format="A1R5G5B5",
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compression = "RAW",
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}
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)
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