Unity摄像机的使用一：双游戏地图或设置小地图

<span style="font-size: 14px; font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">今天学习了一下摄像机的运用，这也是游戏中经常用到的，比如说QQ飞车，穿越火线等 </span>
大体的效果如下图： —_—



下面我们就来看看怎么弄。

首先，这肯定需要两个摄像机，除了Main Camera 之外我们需要新建一个摄像机Camera，显而易见

Camera的视图在Main Camera之上，所以Camera的Depth的值要比Mian Camera 大，我们先让这两个

摄像机看到场景中不同的物体；

下面我们开始写脚本控制：

using UnityEngine;
using System.Collections;

public class PictureinPicture : MonoBehaviour {

//定义枚举类型
public enum HorizontalAlignment {left, center, right};
public enum VerticalAlignment{top, middle, bottom};
public enum ScreenDimensions{pixels, screen_percentage};

//定义枚举类型的变量
public HorizontalAlignment horizontalAlignment = HorizontalAlignment.left;
public VerticalAlignment verticalAlignment = VerticalAlignment.top;
public ScreenDimensions dimensions = ScreenDimensions.pixels;

public int width = 50;
public int height = 50;
public float xOffset = 0.0f;
public float yOffset = 0.0f;
public bool update = true;

private int hSize, vSize, hLoc, vLoc;

void Start()
{
AdjustCamera();
}

//游戏运行时，每一帧都调用此函数
void Update()
{
AdjustCamera();
}

//游戏对象初始化时，调用此函数
void AdjustCamera()
{
if (dimensions == ScreenDimensions.screen_percentage)            //调节视图为指定百分比大小
{
hSize = (int)(width * 0.01f * Screen.width);
vSize = (int)(height * 0.01f * Screen.height);
}
else       							 //调节视图为指定像素大小
{
hSize = height;
vSize = width;
}

if (horizontalAlignment == HorizontalAlignment.left)               //水平方向上是左对齐
{
hLoc = (int)(xOffset * 0.01f * Screen.width);
}
else if(horizontalAlignment == HorizontalAlignment.right)         //水平方向上是右对齐
{
hLoc = (int)((Screen.width - hSize) - (xOffset * 0.01f * Screen.width));
}
else                                                             //水平方向上是居中
{
hLoc = (int)((Screen.width - hSize) * 0.5f - (xOffset * 0.01f * Screen.width));
}

if (verticalAlignment == VerticalAlignment.top)                     //垂直方向为顶端
{
vLoc = (int)((Screen.height - vSize) - (yOffset * 0.01f * Screen.height));
}
else if (verticalAlignment == VerticalAlignment.bottom)             //垂直方向为底端
{
vLoc = (int)(yOffset * 0.01f * Screen.height);
}
else								  //垂直方向为居中
{
vLoc = (int)((Screen.height - vSize) * 0.5f - (yOffset * 0.01f * Screen.height));
}

this.GetComponent<Camera>().pixelRect = new Rect(hLoc, vLoc, hSize, vSize);
}
}

脚本写好之后把他挂到Camera上



最后通过设置参数达到想要的效果：



当然，如果需要你也可以设置多个视图，只要你不看花眼