blob: 8b0056cbf16a37beac0a9804f399e4e977a41d1c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
/*
* GNU AFFERO GENERAL PUBLIC LICENSE
* Version 3, 19 November 2007
* Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
* Everyone is permitted to copy and distribute verbatim copies
* of this license document, but changing it is not allowed.
*/
using System;
using System.Drawing;
namespace UVtools.Core.Extensions
{
public static class PointExtensions
{
public static double FindLength(Point start, Point end) => Math.Sqrt(Math.Pow(end.Y - start.Y, 2) + Math.Pow(end.X - start.X, 2));
public static Point Rotate(this Point point, double angleDegree, Point pivot = default)
{
if (angleDegree is 0 or 360) return point;
double angle = angleDegree * Math.PI / 180;
double cos = Math.Cos(angle);
double sin = Math.Sin(angle);
int dx = point.X - pivot.X;
int dy = point.Y - pivot.Y;
double x = cos * dx - sin * dy + pivot.X;
double y = sin * dx + cos * dy + pivot.Y;
Point rotated = new((int)Math.Round(x), (int)Math.Round(y));
return rotated;
}
}
}
|