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Change colors to same like Google Inbox avatar.
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All have 26 colors for a-z, 1-9.
other chars use old color index.
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@huacnlee
huacnlee committed Nov 9, 2015
1 parent 255e9ec commit 46131bc
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Showing 2 changed files with 46 additions and 228 deletions.
2 changes: 1 addition & 1 deletion lib/letter_avatar/avatar.rb
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Expand Up @@ -69,7 +69,7 @@ def generate_fullsize(identity)
instructions = %W{
-size 240x240
xc:#{to_rgb(color)}
-pointsize 150
-pointsize 140
-fill '#{FILL_COLOR}'
-gravity Center
-annotate -5+20 '#{letter}'
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272 changes: 45 additions & 227 deletions lib/letter_avatar/colors.rb
View file
@@ -1,237 +1,55 @@
module LetterAvatar
module Colors

# Colors form Google Inbox
# https://inbox.google.com
COLORS = [
[226, 95, 81], # A
[242, 96, 145], # B
[187, 101, 202], # C
[149, 114, 207], # D
[120, 132, 205], # E
[91, 149, 249], # F
[72, 194, 249], # G
[69, 208, 226], # H
[72, 182, 172], # I
[82, 188, 137], # J
[155, 206, 95], # K
[212, 227, 74], # L
[254, 218, 16], # M
[247, 192, 0], # N
[255, 168, 0], # O
[255, 138, 96], # P
[194, 194, 194], # Q
[143, 164, 175], # R
[162, 136, 126], # S
[163, 163, 163], # T
[175, 181, 226], # U
[179, 155, 221], # V
[194, 194, 194], # W
[124, 222, 235], # X
[188, 170, 164], # Y
[173, 214, 125] # Z
]

def self.for(username)
all[
Digest::MD5.hexdigest(username)[0...15].to_i(16) % all.length
]
char = username[0]
char.upcase!
if /[A-Z]/.match(char)
# 65 is 'A' ord
idx = char.ord - 65
return all[idx]
end

if /[\d]/.match(char)
return all[char.to_i]
end

return all[Digest::MD5.hexdigest(username)[0...15].to_i(16) % all.length]
end

# palette of optimally disctinct colors
# cf. http://tools.medialab.sciences-po.fr/iwanthue/index.php
# parameters used:
# - H: 0 - 360
# - C: 0 - 2
# - L: 0.75 - 1.5
def self.all
[
[198,125,40],
[61,155,243],
[74,243,75],
[238,89,166],
[52,240,224],
[177,156,155],
[240,120,145],
[111,154,78],
[237,179,245],
[237,101,95],
[89,239,155],
[43,254,70],
[163,212,245],
[65,152,142],
[165,135,246],
[181,166,38],
[187,229,206],
[77,164,25],
[179,246,101],
[234,93,37],
[225,155,115],
[142,140,188],
[223,120,140],
[249,174,27],
[244,117,225],
[137,141,102],
[75,191,146],
[188,239,142],
[164,199,145],
[173,120,149],
[59,195,89],
[222,198,220],
[68,145,187],
[236,204,179],
[159,195,72],
[188,121,189],
[166,160,85],
[181,233,37],
[236,177,85],
[121,147,160],
[234,218,110],
[241,157,191],
[62,200,234],
[133,243,34],
[88,149,110],
[59,228,248],
[183,119,118],
[251,195,45],
[113,196,122],
[197,115,70],
[80,175,187],
[103,231,238],
[240,72,133],
[228,149,241],
[180,188,159],
[172,132,85],
[180,135,251],
[236,194,58],
[217,176,109],
[88,244,199],
[186,157,239],
[113,230,96],
[206,115,165],
[244,178,163],
[230,139,26],
[241,125,89],
[83,160,66],
[107,190,166],
[197,161,210],
[198,203,245],
[238,117,19],
[228,119,116],
[131,156,41],
[145,178,168],
[139,170,220],
[233,95,125],
[87,178,230],
[157,200,119],
[237,140,76],
[229,185,186],
[144,206,212],
[236,209,158],
[185,189,79],
[34,208,66],
[84,238,129],
[133,140,134],
[67,157,94],
[168,179,25],
[140,145,240],
[151,241,125],
[67,162,107],
[200,156,21],
[169,173,189],
[226,116,189],
[133,231,191],
[194,161,63],
[241,77,99],
[241,217,53],
[123,204,105],
[210,201,119],
[229,108,155],
[240,91,72],
[187,115,210],
[240,163,100],
[178,217,57],
[179,135,116],
[204,211,24],
[186,135,57],
[223,176,135],
[204,148,151],
[116,223,50],
[95,195,46],
[123,160,236],
[181,172,131],
[142,220,202],
[240,140,112],
[172,145,164],
[228,124,45],
[135,151,243],
[42,205,125],
[192,233,116],
[119,170,114],
[158,138,26],
[73,190,183],
[185,229,243],
[227,107,55],
[196,205,202],
[132,143,60],
[233,192,237],
[62,150,220],
[205,201,141],
[106,140,190],
[161,131,205],
[135,134,158],
[198,139,81],
[115,171,32],
[101,181,67],
[149,137,119],
[37,142,183],
[183,130,175],
[168,125,133],
[124,142,87],
[236,156,171],
[232,194,91],
[219,200,69],
[144,219,34],
[219,95,187],
[145,154,217],
[165,185,100],
[127,238,163],
[224,178,198],
[119,153,120],
[124,212,92],
[172,161,105],
[231,155,135],
[157,132,101],
[122,185,146],
[53,166,51],
[70,163,90],
[150,190,213],
[210,107,60],
[166,152,185],
[159,194,159],
[39,141,222],
[202,176,161],
[95,140,229],
[168,142,87],
[93,170,203],
[159,142,54],
[14,168,39],
[94,150,149],
[187,206,136],
[157,224,166],
[235,158,208],
[109,232,216],
[141,201,87],
[208,124,118],
[142,125,214],
[19,237,174],
[72,219,41],
[234,102,111],
[168,142,79],
[188,135,35],
[95,155,143],
[148,173,116],
[223,112,95],
[228,128,236],
[206,114,54],
[195,119,88],
[235,140,94],
[235,202,125],
[233,155,153],
[214,214,238],
[246,200,35],
[151,125,171],
[132,145,172],
[131,142,118],
[199,126,150],
[61,162,123],
[58,176,151],
[215,141,69],
[225,154,220],
[220,77,167],
[233,161,64],
[130,221,137],
[81,191,129],
[169,162,140],
[174,177,222],
[236,174,47],
[233,188,180],
[69,222,172],
[71,232,93],
[118,211,238],
[157,224,83],
[218,105,73],
[126,169,36]
]
COLORS
end

end
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