unity点击rawimage获取rendertexture的映射物体
时间: 2023-08-06 14:00:55 浏览: 245
在Unity中通过点击RawImage来获取RenderTexture的映射物体需要编写一些脚本逻辑。首先,在场景中创建一个RawImage和一个空物体,并将RawImage设为UI元素。接下来,我们需要在脚本中实现点击RawImage的功能。
首先,在需要实现点击事件的脚本中添加以下代码段:
```csharp
using UnityEngine;
using UnityEngine.EventSystems;
public class ClickRawImage : MonoBehaviour, IPointerClickHandler
{
public GameObject mappedObject; // 映射的物体
public RenderTexture renderTexture; // 渲染纹理
public void OnPointerClick(PointerEventData eventData)
{
// 获取点击的位置
Vector2 localCursor;
RectTransformUtility.ScreenPointToLocalPointInRectangle(GetComponent<RectTransform>(), eventData.position, null, out localCursor);
// 将点击的位置转换为纹理坐标
Vector2 textureCoordinates = new Vector2(localCursor.x / GetComponent<RectTransform>().rect.width + 0.5f, localCursor.y / GetComponent<RectTransform>().rect.height + 0.5f);
// 根据纹理坐标获取映射的位置
Ray ray = Camera.main.ViewportPointToRay(textureCoordinates);
RaycastHit hit;
if (Physics.Raycast(ray, out hit))
{
// 获取点击位置的映射物体
mappedObject = hit.transform.gameObject;
}
}
}
```
在脚本中,我们需要实现接口`IPointerClickHandler`来响应RawImage的点击事件。在点击事件回调函数`OnPointerClick`中,首先计算出点击的位置`localCursor`,然后将其转换为纹理坐标`textureCoordinates`。接着,根据纹理坐标通过Raycast来获取点击位置的映射物体,并将其赋值给`mappedObject`。
最后,将该脚本挂载到RawImage上,并将相应的RenderTexture赋值给脚本中的`renderTexture`变量。这样,当点击RawImage时,就可以通过点击位置获取到映射的物体了。
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