smart-bow-infrared/Assets/SmartBow/Resources/SmartBow/Prefabs/ZIM/PixelCheaker.cs

using o0.Geometry2D.Float;
using o0InfraredLocate.ZIM;
using UnityEngine;
using UnityEngine.UI;

// 用椭圆标记要识别的区域，区域外的像素会被剔除
public class PixelCheaker : MonoBehaviour, IPixelCheaker
{
    public Image Bordermage;            // 椭圆的图片
    public RectTransform BorderArea;    // 椭圆的大小区域，调整这个gameobject的scale作为椭圆的区域

    public void Start()
    {
        ellipseRadius = BorderArea.localScale / 2f;
    }

    private Vector2 ellipseRadius;

    //public bool OutArea2D(Vector2 pixelPosition, Vector<int> imageSize, out float f) => OutArea2D(new Vector2(pixelPosition.x / imageSize.x, pixelPosition.y / imageSize.y), out f);
    //public bool OutArea2D(Vector2 pixelPosition, Vector2 imageSize, out float f) => OutArea2D(pixelPosition / imageSize, out f);
    //public bool OutArea2D(o0.Geometry2D.Float.Vector pixelPosition, Vector<int> imageSize, out float f) => OutArea2D(new Vector2(pixelPosition.x / imageSize.x, pixelPosition.y / imageSize.y), out f);
    public bool OutArea2D(Vector2 pixelPosition, Vector2 imageSize) => OutArea2D(pixelPosition / imageSize);
    public bool OutArea2D(Vector pixelPosition, Vector imageSize)=> OutArea2D(new Vector2(pixelPosition.x / imageSize.x, pixelPosition.y / imageSize.y));

    // out 椭圆的距离系数，越大表示离椭圆越远
    //private bool OutArea2D(Vector2 pixelUV, out float f)
    //{
    //    Vector2 center = new Vector2(0.5f, 0.5f);           // 椭圆中心
    //    float normalizedX = (pixelUV.x - center.x) / ellipseRadius.x;
    //    float normalizedY = (pixelUV.y - center.y) / ellipseRadius.y;

    //    float value = (normalizedX * normalizedX) + (normalizedY * normalizedY);    // 使用椭圆方程判断
    //    f = (float)Math.Sqrt(value);
    //    return value > 1.0f;
    //}

    // 无out的版本
    private bool OutArea2D(Vector2 pixelUV)
    {
        Vector2 center = new Vector2(0.5f, 0.5f);           // 椭圆中心
        float normalizedX = (pixelUV.x - center.x) / ellipseRadius.x;
        float normalizedY = (pixelUV.y - center.y) / ellipseRadius.y;

        float value = (normalizedX * normalizedX) + (normalizedY * normalizedY);    // 使用椭圆方程判断
        return value > 1.0f;
    }

    public void ShowImage() => Bordermage.enabled = true;
    public void HideImage() => Bordermage.enabled = false;
}