BoxOutline.cs

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using System.Collections.Generic;
using UnityEngine;
 
public class BoxOutline : ModifiedShadow
{
    private const int maxHalfSampleCount = 20;
 
    [SerializeField]
    [Range(1f, 20f)]
    private int m_halfSampleCountX = 1;
 
    [SerializeField]
    [Range(1f, 20f)]
    private int m_halfSampleCountY = 1;
 
    public int halfSampleCountX
    {
        get
        {
            return m_halfSampleCountX;
        }
        set
        {
            m_halfSampleCountX = Mathf.Clamp(value, 1, 20);
            if (base.graphic != null)
            {
                base.graphic.SetVerticesDirty();
            }
        }
    }
 
    public int halfSampleCountY
    {
        get
        {
            return m_halfSampleCountY;
        }
        set
        {
            m_halfSampleCountY = Mathf.Clamp(value, 1, 20);
            if (base.graphic != null)
            {
                base.graphic.SetVerticesDirty();
            }
        }
    }
 
    public override void ModifyVertices(List<UIVertex> verts)
    {
        if (!IsActive())
        {
            return;
        }
        int num = verts.Count * (m_halfSampleCountX * 2 + 1) * (m_halfSampleCountY * 2 + 1);
        if (verts.Capacity < num)
        {
            verts.Capacity = num;
        }
        int count = verts.Count;
        int num2 = 0;
        float num3 = base.effectDistance.x / (float)m_halfSampleCountX;
        float num4 = base.effectDistance.y / (float)m_halfSampleCountY;
        for (int i = -m_halfSampleCountX; i <= m_halfSampleCountX; i++)
        {
            for (int j = -m_halfSampleCountY; j <= m_halfSampleCountY; j++)
            {
                if (i != 0 || j != 0)
                {
                    int num5 = num2 + count;
                    ApplyShadow(verts, base.effectColor, num2, num5, num3 * (float)i, num4 * (float)j);
                    num2 = num5;
                }
            }
        }
    }
}