如何在Swift中创建CGSize？

Question

如何在Swift中创建CGSize？这是我到目前为止所尝试的（但不起作用）：

var s:CGSize = {10,20}
var s:CGSize = CGMakeSize(10,20)

Answer 1

你的第一次尝试不会起作用，因为C结构不存在于Swift中。你需要：

let size = CGSize(width: 20, height: 30)

或者（仅限Swift 3之前，即便如此，不是首选）：

let size = CGSizeMake(20,30)

（不是MakeSize）。

Answer 2

从Swift 3开始，您无法再使用CGSizeMake

Swift 3的解决方案是var size = CGSize(width: 20, height: 30)

Answer 3

快捷键4

void UpdateTarget()
{
    GameObject[] Humans = GameObject.FindGameObjectsWithTag(humanTag);
    GameObject[] Vaccines = GameObject.FindGameObjectsWithTag(vaccineTag);
    GameObject[] HV = Humans.Concat(Vaccines).ToArray();

    float shortestDistance = Mathf.Infinity;
    GameObject nearestHuman = null;
    Vector3 currentPosition = this.transform.position;

    foreach (GameObject huvacs in HV)
    {
        Vector3 directionToTarget = huvacs.transform.position - currentPosition;

        float distanceToTarget = directionToTarget.sqrMagnitude;
        if (distanceToTarget < shortestDistance)
        {
            shortestDistance = distanceToTarget;
            nearestHuman = huvacs;
        }
        else
        {
            targetHuman = null;
        }
    }

    if (nearestHuman != null && shortestDistance <= range)
    {
        targetHuman = nearestHuman.transform;
        infectionAgent.SetDestination(targetHuman.transform.position);
    }
}