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#!/usr/bin/env ruby
#
# gen-logo.rb: generate svg logo
#
#
# notes:
# * used #4e86b1 as base color
# * used color wheel to generate complimentary colors:
# https://www.sessions.edu/color-calculator/
#
require 'luigi-template'
CONFIG = {
# svg dimensions
# FIXME: these aren't working
svg_width: 108,
svg_height: 90,
# show background?
bg: false,
# animation duration, in seconds
duration: 20,
# animation delay coefficients
# delay = (y - 1) * YC + (x - 1) * XC
delay_coefficients: {
y: 1.0,
x: 0.2,
},
# animation color keyframes
colors: [
{ c: '#ffffff', t: 0 },
{ c: '#4e86b1', t: 0.333 },
{ c: '#4eb179', t: 0.666 },
{ c: '#ffffff', t: 1 },
],
# dot sizes
dot_width: 12,
dot_height: 10,
# square coordinates
dots: [
# P (0)
{ x: 1, y: 1 },
{ x: 1, y: 2 },
{ x: 1, y: 3 },
{ x: 1, y: 4 },
{ x: 1, y: 5 },
{ x: 1, y: 5 },
# P (1)
{ x: 2, y: 1 },
{ x: 2, y: 3 },
# P (2)
{ x: 3, y: 1 },
{ x: 3, y: 2 },
{ x: 3, y: 3 },
# T (0)
{ x: 5, y: 1 },
# T (1)
{ x: 6, y: 1 },
{ x: 6, y: 2 },
{ x: 6, y: 3 },
{ x: 6, y: 4 },
{ x: 6, y: 5 },
# T (2)
{ x: 7, y: 1 },
# _ (0-7)
{ x: 1, y: 7 },
{ x: 2, y: 7 },
{ x: 3, y: 7 },
{ x: 4, y: 7 },
{ x: 5, y: 7 },
{ x: 6, y: 7 },
{ x: 7, y: 7 },
],
}
# build template cache
TEMPLATES = Luigi::Cache.new({
svg: %{
<?xml version="1.0"?>
<svg
xmlns="http://www.w3.org/2000/svg"
version="1.1"
viewBox="0 0 %{width} %{height}"
>
%{bg}
<g fill='white' stroke='black'>
%{dots}
</g>
</svg>
},
bg: %{
<rect x='0' y='0' width='100%' height='100%' fill='black'/>
},
dot: %{
<rect x='%{x}' y='%{y}' width='%{width}' height='%{height}'>
<animate
dur='%{duration}s'
begin='%{begin}'
values='%{values}'
keyTimes='%{times}'
attributeName='fill'
repeatCount='indefinite'
/>
</rect>
},
}.reduce({}) do |r, row|
r[row[0]] = row[1].strip.gsub(/(?<!\?\>)\s+/, ' ')
r
end)
# keyframe color values
VALUES = CONFIG[:colors].map { |row|
row[:c]
}.join(';').freeze
# keyframe times
TIMES = CONFIG[:colors].map { |row|
('%1.3f' % row[:t]).gsub(/0+$/, '').gsub(/\.$/, '')
}.join(';').freeze
# get delay coefficients
YC = CONFIG[:delay_coefficients][:y]
XC = CONFIG[:delay_coefficients][:x]
# generate svg
svg = TEMPLATES[:svg].run({
# svg dimensions
width: CONFIG[:svg_width],
height: CONFIG[:svg_height],
# background
bg: CONFIG[:bg] ? TEMPLATES[:bg].run({}) : '',
# dots
dots: CONFIG[:dots].map { |row|
y = row[:y] * CONFIG[:dot_height]
x = row[:x] * CONFIG[:dot_width]
# calculate animation delay
delay = (row[:y] - 1) * YC + (row[:x] - 1) * XC
TEMPLATES[:dot].run(row.merge({
x: x - 5,
y: y,
width: CONFIG[:dot_width],
height: CONFIG[:dot_height],
duration: CONFIG[:duration],
begin: '%1.1fs' % [delay],
values: VALUES,
times: TIMES,
}))
}.join,
})
# apply cleanups to svg, then write it to stdout
puts([
[ /> +</, '><' ],
[ /\s+>/m, '>' ],
[ / +\/>/, '/>' ],
[ / +<svg/, '<svg' ],
].reduce(svg) do |r, row|
# apply cleanup
r.gsub(row[0], row[1])
end)
|
