On macOS, system symbols displays in a SKTexture as expected, with the correct color and aspect ratio.
But on iOS they are always displayed in black, and sometimes with slightly wrong aspect ratio.
Is there a solution to this problem?
import SpriteKit
#if os(macOS)
import AppKit
#else
import UIKit
#endif
class GameScene: SKScene {
override func didMove(to view: SKView) {
let systemImage = "square.and.arrow.up"
let width = 400.0
#if os(macOS)
let image = NSImage(systemSymbolName: systemImage, accessibilityDescription: nil)!.withSymbolConfiguration(.init(hierarchicalColor: .white))!
let scale = NSScreen.main!.backingScaleFactor
image.size = CGSize(width: width * scale, height: width / image.size.width * image.size.height * scale)
#else
let image = UIImage(systemName: systemImage)!.applyingSymbolConfiguration(.init(pointSize: width))!.applyingSymbolConfiguration(.init(hierarchicalColor: .white))!
#endif
let texture = SKTexture(image: image)
print(image.size, texture.size(), image.size.width / image.size.height)
let size = CGSize(width: width, height: width / image.size.width * image.size.height)
addChild(SKSpriteNode(texture: texture, size: size))
}
}
In principle you could render the UIImage into a graphics context and then create your SKTexture from that.
That's a great idea. I changed the iOS code to this and it seems to work for both aspect ratio and color:
var image = UIImage(systemName: systemImage)!.applyingSymbolConfiguration(.init(pointSize: width))!.applyingSymbolConfiguration(.init(hierarchicalColor: .white))!
image = UIGraphicsImageRenderer(size: image.size).image { context in
image.draw(at: .zero)
}
