51 lines
1010 B
Go
51 lines
1010 B
Go
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package main
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import (
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"strconv"
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"github.com/fogleman/gg"
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)
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/*
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8x8 square of 100x100 px squares
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First 6 characters of the hash are the color
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For the next 8 characters each character
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represents 4 bits of a row being on or off.
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The image is then mirrored to the right side.
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9d26bf3cf1fb2b2f02d4a2013333f4fcd551cb2e
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9d26bf -> color
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3 -> row1
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c -> row2
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...
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b -> row8
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3 = 0 0 1 1
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c = 1 1 0 0
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...
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b = 1 0 1 1
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*/
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func FourBitSquares(dc *gg.Context, username string) {
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hash := hash(username)
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colorString := hash[0:6]
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r, g, b := rgbFromHex(colorString)
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dc.SetRGB255(r, g, b)
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for i, character := range hash[6:14] {
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integer, _ := strconv.ParseUint(string(character), 16, 4)
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for j := range 4 {
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on := hasBit(integer, j)
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dc.DrawRectangle(float64(j * 100), float64(i * 100), 100, 100)
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dc.DrawRectangle(700 - float64(j * 100), float64(i * 100), 100, 100)
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if !on {
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dc.SetRGB255(r, g, b)
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} else {
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dc.SetRGB255(255, 255, 255)
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}
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dc.Fill()
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}
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}
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}
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