Unity tips - draw aiming Center

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Practice process

Preview effect

In fact, it's very simple to implement , It only needs Rect Classes and DrawTexture The method can .
Let's see. Rect Parameter description inside ,
Rect(float x, float y, float width, float height)
Parameter one ： At the top left corner of the rectangle x spot
Parameter two ： At the top left corner of the rectangle y spot
Parameter 3 ： At the top right corner of the rectangle x spot
Parameter 4 ： At the top right corner of the rectangle y spot
This is a rectangle
We're looking DrawTexture Method , Pass two parameters , Parameter 1 is rectangle , The second parameter is the texture painted by the target .

public class Test : MonoBehaviour
{
    
    public Texture texture;

    void OnGUI()
    {
    
        // >>1 and  /2  It's the same 
        // Draw centroid - This is the matrix size set according to the size of the texture 
        // Rect rect = new Rect(Input.mousePosition.x - (texture.width >> 1),
        // Screen.height - Input.mousePosition.y - (texture.height >> 1), texture.width, texture.height);
        // GUI.DrawTexture(rect, texture);
        // This is the specified matrix size , No matter how big the texture , Will zoom in 
        int widthAndHeight = 10;
        Rect rect = new Rect(Input.mousePosition.x - widthAndHeight / 2, Screen.height - Input.mousePosition.y - widthAndHeight / 2, widthAndHeight, widthAndHeight);
        GUI.DrawTexture(rect, texture);
    }
}

other

author ： Xiaokong and Xiaozhi Xiaokong
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