ShapeData.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Terraria.DataStructures;
 
namespace Terraria.WorldBuilding;
 
public class ShapeData
{
    private HashSet<Point16> _points;
 
    public int Count => _points.Count;
 
    public ShapeData()
    {
        _points = new HashSet<Point16>();
    }
 
    public ShapeData(ShapeData original)
    {
        _points = new HashSet<Point16>(original._points);
    }
 
    public void Add(int x, int y)
    {
        _points.Add(new Point16(x, y));
    }
 
    public void Remove(int x, int y)
    {
        _points.Remove(new Point16(x, y));
    }
 
    public HashSet<Point16> GetData()
    {
        return _points;
    }
 
    public void Clear()
    {
        _points.Clear();
    }
 
    public bool Contains(int x, int y)
    {
        return _points.Contains(new Point16(x, y));
    }
 
    public void Add(ShapeData shapeData, Point localOrigin, Point remoteOrigin)
    {
        foreach (Point16 datum in shapeData.GetData())
        {
            Add(remoteOrigin.X - localOrigin.X + datum.X, remoteOrigin.Y - localOrigin.Y + datum.Y);
        }
    }
 
    public void Subtract(ShapeData shapeData, Point localOrigin, Point remoteOrigin)
    {
        foreach (Point16 datum in shapeData.GetData())
        {
            Remove(remoteOrigin.X - localOrigin.X + datum.X, remoteOrigin.Y - localOrigin.Y + datum.Y);
        }
    }
 
    public static Rectangle GetBounds(Point origin, params ShapeData[] shapes)
    {
        int num = shapes[0]._points.First().X;
        int num2 = num;
        int num3 = shapes[0]._points.First().Y;
        int num4 = num3;
        for (int i = 0; i < shapes.Length; i++)
        {
            foreach (Point16 point in shapes[i]._points)
            {
                num = Math.Max(num, point.X);
                num2 = Math.Min(num2, point.X);
                num3 = Math.Max(num3, point.Y);
                num4 = Math.Min(num4, point.Y);
            }
        }
        return new Rectangle(num2 + origin.X, num4 + origin.Y, num - num2, num3 - num4);
    }
}