mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 11:37:35 +00:00
77 lines
2.9 KiB
Lua
77 lines
2.9 KiB
Lua
local top = [[
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<!DOCTYPE html>
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<html lang=en>
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<head>
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<link rel="icon" href="data:;base64,iVBORw0KGgo=">
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
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<meta name="description" content="description">
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<style>
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* {margin: 0;padding: 0;box-sizing: border-box;}
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body {margin: 0 auto;font-family: Roboto, Helvetica, Arial, sans-serif;color: #444444;line-height: 1;max-width: 960px;padding: 30px;}
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h1, h2, h3, h4 {color: #111111;font-weight: 400;}
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h1, h2, h3, h4, h5, p {margin-bottom: 24px;padding: 0;}
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h1 {font-size: 48px;}
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h2 {font-size: 36px;margin: 24px 0 6px;}
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.button {min-height:1rem;border: none;border-radius: 0.25rem;background: #1E88E5;color: white;font-family: sans-serif;font-size: 1rem;line-height: 1.2;white-space: nowrap;text-decoration: none;padding: 0.25rem 0.5rem;margin: 0.25rem;cursor: pointer;}
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body {height: 100vh;display: grid;place-items: center;background: hsl(0, 0%, 93%);}
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.canvas {width: 75vmin;height: 75vmin;background: hsl(350, 70%, 80%);}
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.shadow {filter: drop-shadow(1px 1px 0.5px rgba(0, 0, 0, .25));}
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</style>
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</head>
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<body>
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]]
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local bottom = [[
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<a href="https://github.com/jart/cosmopolitan/tree/master/tool/net/demo/gensvg.lua">Show The Code</a>
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</body>
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</html>
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]]
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local nrows = 10
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local ncols = 10
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local sqsize = 20
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local seed = math.random()
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local sat = 80
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local light = 70
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local function rect(x, y, w, h, rx)
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local style = string.format('class="shadow" fill="hsla(%s, %s%%, %s%%, %s)"',
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seed * 360 - 180, sat, light,
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math.random(100) / 100.0)
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return string.format(
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'<rect x="%s" y="%s" width="%s" height="%s" rx="%s" %s>', x, y,
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w, h, math.random(5, 12), style)
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end
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local function writeBlock(i, j)
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if math.random() < 0.45 then return end
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local cellsize = (math.random() > 0.25) and sqsize or math.random(1,4) * sqsize
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Write('<g class="draw-block">')
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Write(rect(i * sqsize - sqsize, j * sqsize - sqsize, cellsize, cellsize))
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Write('</g>')
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end
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local function render()
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nrows = nrows * 3
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ncols = ncols * 3
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local xsize = nrows * sqsize
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local ysize = ncols * sqsize
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local style = string.format('style="background-color: hsl(%s,%s%%,%s%%);"',
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seed * 360, sat, light)
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Write('<svg class="canvas" ' .. style .. ' viewBox="0 0 ' .. xsize .. ' ' ..
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ysize .. '">')
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for i = 1, nrows, 1 do for j = 1, ncols, 1 do writeBlock(i, j) end end
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Write('</svg>')
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end
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Write(top)
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Write("<h2>Let's Generate Some SVG</h2>")
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Write("<p>If you don't like it, maybe refresh?</p>")
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render()
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Write('<div>')
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Write('<a class="button" href="/gensvg/1">Walk Through</a>')
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Write('</div>')
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Write(bottom)
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