问题
I need to check if a CGPoint is inside a SKSpriteNode.
After a little research, CGPathContainsPoint seems appropriated for my purpose.
if CGPathContainsPoint(my_sprite_path, nil, my_point, false) {
}
But Xcode alerts me: Use of unresolved identifier CGPathContainsPoint
I tried to import :
import UIKit
import CoreGraphics
I'm using Xcode 8.0 beta 6.
Did I miss anything?
回答1:
As of Swift 3, many Core Graphics functions are now methods on the corresponding type. In your example:
if my_sprite_path.contains(my_point) {
}
For more information see SE-044 Import as member.
来源：https://stackoverflow.com/questions/39027603/troubles-using-cgpathcontainspoint-swift