Unity2D屏幕适配方案

看了cnblogs里的一篇文章，终于理解了Unity2D的摄像机系统：http://www.cnblogs.com/flyFreeZn/p/4073655.html

我根据他的方案，改写了两种适配方案：fixedWidth和fixedHeight，就是锁定其中一个变量来适配屏幕。

using UnityEngine;
using System.Collections;

public class GameCamera : MonoBehaviour {
    public string scaleMode = "fixedWidth";

    public float designWidth = 9.6f;
    public float designHeight = 16f;
    
    // Use this for initialization
    void Start () {
        float aspectRatio = Screen.width * 1.0f / Screen.height;
        float orthographicSize = 0;

        switch (scaleMode) {
        case "fixedWidth":
            orthographicSize = designWidth / (2 * aspectRatio);
            break;
        case "fixedHeight":
            orthographicSize = designHeight / 2;
            break;
        }

        this.GetComponent<Camera>().orthographicSize = orthographicSize;
        Debug.Log (orthographicSize);
    }
    
    // Update is called once per frame
    void Update () {
        
    }
}

你可以修改设计尺寸，记住设计尺寸是通过1:100比例缩放后的。