Use CGColor and remove PlatformColor

Sources/SwiftUIMath/Internal/Helpers/CGColor+HexString.swift

@@ -0,0 +1,20 @@
+import CoreGraphics
+import Foundation
+
+extension CGColor {
+  static func fromHexString(_ hexString: String) -> CGColor? {
+    guard !hexString.isEmpty, hexString.hasPrefix("#") else { return nil }
+
+    var rgbValue = UInt64(0)
+    let scanner = Scanner(string: hexString)
+    scanner.charactersToBeSkipped = CharacterSet(charactersIn: "#")
+    guard scanner.scanHexInt64(&rgbValue) else { return nil }
+
+    return CGColor(
+      srgbRed: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,
+      green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,
+      blue: CGFloat(rgbValue & 0x0000FF) / 255.0,
+      alpha: 1.0
+    )
+  }
+}

Sources/SwiftUIMath/Internal/Helpers/Platform.swift

@@ -1,31 +0,0 @@
-import SwiftUI
-
-#if canImport(UIKit)
-  typealias PlatformColor = UIColor
-  typealias PlatformBezierPath = UIBezierPath
-#elseif canImport(AppKit)
-  typealias PlatformColor = NSColor
-  typealias PlatformBezierPath = NSBezierPath
-#endif
-
-extension PlatformColor {
-  convenience init?(fromHexString hexString: String) {
-    self.init(hexString: hexString)
-  }
-
-  convenience init?(hexString: String) {
-    guard !hexString.isEmpty, hexString.hasPrefix("#") else { return nil }
-
-    var rgbValue = UInt64(0)
-    let scanner = Scanner(string: hexString)
-    scanner.charactersToBeSkipped = CharacterSet(charactersIn: "#")
-    guard scanner.scanHexInt64(&rgbValue) else { return nil }
-
-    self.init(
-      red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,
-      green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,
-      blue: CGFloat(rgbValue & 0x0000FF) / 255.0,
-      alpha: 1.0
-    )
-  }
-}