How to convert between vector_float2 and CGPoint*? - objective-c

Question

What's the easiest/fastest way to convert between vector_float2 and CGPoint* in Objective-C?
Does Apple provide any built-in functionality for this kind of type conversion? I noticed in 2-3 places in sample apps they just call CGPointMake() etc. to make the conversion
Is it possible to simply cast a CGPoint* to vector_float2 and vice versa? Is it safe to do so?
Update: obviously the solution is:
vector_float2 v = (vector_float2){(float)point.x, (float)point.y};
CGPoint p = CGPointMake(v.x, v.y);
But this is cumbersome if you need to do so frequently, and more so if there's a C array of either vector_float2* or CGPoint*. So I'm looking for already-existing solutions or very simple alternatives that I may be overlooking.

Answer 1

I tried to simply extend CGPoint but couldnt seem to import vector_float2; not even with the bridging header file.
// Doesn't work!!
extension CGPoint {
init(vector: vector_float2)
{
self.x = CGFloat(vector.x)
self.y = CGFloat(vector.y)
}
}
You do have several options though. You can extend Float with a calculated var that returns a CGFloat and extend GKAgent2D to convert it's position to a CGPoint:
extension Float {
var f: CGFloat { return CGFloat(self) }
}
extension GKAgent2D {
var cgposition: CGPoint {
return CGPoint(x: self.position.x.f, y: self.position.y.f)
}
}
You can also extend CGPoint itself to accept two Float's:
extension CGPoint {
init(x: Float, y: Float) {
self.x = CGFloat(x)
self.y = CGFloat(y)
}
}
extension GKAgent2D {
var cgposition: CGPoint {
// Note that the ".f" is gone from the example above
return CGPoint(x: self.position.x, y: self.position.y)
}
}
In both cases, you can use it like this:
let agent = GKAgent2D()
let point = agent.cgposition

Answer 2

Example:
CGPoint p = CGPointMake(1.0f, 1.0f);
vector_float2 v = simd_make_float2(p.x, p.y);
CGPoint x = CGPointMake(v[0], v[1]);