Monorepo for Aesthetic.Computer
aesthetic.computer
slab/yergersnap: paint icon from a Julia Yerger work
Adds make-icon-from-image.swift which crops a square painting source
to remove its frame, applies the macOS app-icon corner radius, and
slices to AppIcon.icns. Icon now uses one of Julia's digital paintings
on paper (JY17.05.05, from the 2018 Vogt show) instead of the
generated camera-aperture default.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
+100
slab/yergersnap/AppIcon.icns
slab/yergersnap/AppIcon.icns
This is a binary file and will not be displayed.
+100
slab/yergersnap/make-icon-from-image.swift
+100
slab/yergersnap/make-icon-from-image.swift
···
1
+
#!/usr/bin/env swift
2
+
//
3
+
// make-icon-from-image.swift — turn a source image (e.g. a painting
4
+
// photo) into AppIcon.icns. Square-center-crops with an optional
5
+
// frame inset, scales to 1024, applies the macOS app-icon corner
6
+
// radius, slices an iconset, compiles to .icns.
7
+
//
8
+
// Usage:
9
+
// swift make-icon-from-image.swift <path> [inset-fraction]
10
+
//
11
+
// inset-fraction defaults to 0.08 (trims 8% off each side, useful
12
+
// for gallery photos where there's a visible frame + matte).
13
+
14
+
import Cocoa
15
+
16
+
let args = CommandLine.arguments
17
+
guard args.count >= 2, !args[1].isEmpty else {
18
+
fputs("usage: make-icon-from-image.swift <path> [inset-fraction]\n", stderr)
19
+
exit(64)
20
+
}
21
+
let srcPath = args[1]
22
+
let inset: CGFloat = args.count >= 3
23
+
? CGFloat(Double(args[2]) ?? 0.08)
24
+
: 0.08
25
+
26
+
guard let image = NSImage(contentsOfFile: srcPath) else {
27
+
fputs("couldn't load image: \(srcPath)\n", stderr)
28
+
exit(1)
29
+
}
30
+
31
+
let srcSize = image.size
32
+
let side = min(srcSize.width, srcSize.height)
33
+
let croppedSide = side * (1.0 - 2 * inset)
34
+
let cropX = (srcSize.width - croppedSide) / 2
35
+
let cropY = (srcSize.height - croppedSide) / 2
36
+
let cropRect = NSRect(x: cropX, y: cropY,
37
+
width: croppedSide, height: croppedSide)
38
+
39
+
let canvas: CGFloat = 1024
40
+
let cornerRadius = canvas * 0.2237 // matches macOS app-icon squircle
41
+
42
+
let master = NSImage(size: NSSize(width: canvas, height: canvas))
43
+
master.lockFocus()
44
+
NSBezierPath(roundedRect: NSRect(x: 0, y: 0, width: canvas, height: canvas),
45
+
xRadius: cornerRadius,
46
+
yRadius: cornerRadius).addClip()
47
+
NSGraphicsContext.current?.imageInterpolation = .high
48
+
image.draw(in: NSRect(x: 0, y: 0, width: canvas, height: canvas),
49
+
from: cropRect,
50
+
operation: .sourceOver,
51
+
fraction: 1)
52
+
master.unlockFocus()
53
+
54
+
// Save iconset slices.
55
+
let outIconset = "icon.iconset"
56
+
let outIcns = "AppIcon.icns"
57
+
let fm = FileManager.default
58
+
try? fm.removeItem(atPath: outIconset)
59
+
try fm.createDirectory(atPath: outIconset, withIntermediateDirectories: true)
60
+
61
+
let slices: [(String, Int)] = [
62
+
("icon_16x16", 16),
63
+
("icon_16x16@2x", 32),
64
+
("icon_32x32", 32),
65
+
("icon_32x32@2x", 64),
66
+
("icon_128x128", 128),
67
+
("icon_128x128@2x", 256),
68
+
("icon_256x256", 256),
69
+
("icon_256x256@2x", 512),
70
+
("icon_512x512", 512),
71
+
("icon_512x512@2x", 1024),
72
+
]
73
+
for (name, px) in slices {
74
+
let scaled = NSImage(size: NSSize(width: px, height: px))
75
+
scaled.lockFocus()
76
+
NSGraphicsContext.current?.imageInterpolation = .high
77
+
master.draw(in: NSRect(x: 0, y: 0, width: px, height: px),
78
+
from: .zero, operation: .sourceOver, fraction: 1)
79
+
scaled.unlockFocus()
80
+
guard let cg = scaled.cgImage(forProposedRect: nil, context: nil,
81
+
hints: nil) else {
82
+
fputs("cgImage failed for \(name)\n", stderr); exit(1)
83
+
}
84
+
let bm = NSBitmapImageRep(cgImage: cg)
85
+
guard let data = bm.representation(using: .png, properties: [:]) else {
86
+
fputs("png encode failed for \(name)\n", stderr); exit(1)
87
+
}
88
+
try data.write(to: URL(fileURLWithPath: "\(outIconset)/\(name).png"))
89
+
}
90
+
91
+
let task = Process()
92
+
task.executableURL = URL(fileURLWithPath: "/usr/bin/iconutil")
93
+
task.arguments = ["-c", "icns", "-o", outIcns, outIconset]
94
+
try task.run()
95
+
task.waitUntilExit()
96
+
if task.terminationStatus != 0 {
97
+
fputs("iconutil failed\n", stderr); exit(1)
98
+
}
99
+
100
+
print("✓ wrote \(outIcns) from \(srcPath) (inset \(inset))")