109 lines
3.0 KiB
C#
109 lines
3.0 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Runtime.CompilerServices;
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using UnityEngine;
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namespace XericLibrary.Runtime.MacroLibrary
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{
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public static class Vector2Extend
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector2 OneMinus(this Vector2 a)
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=> new Vector2(1 - a.x, 1 - a.y);
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[Obsolete("unfinished")]
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public static Vector2 Projection(this Vector2 point, Vector3 start, Vector3 end)
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{
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Vector3 vec = end - start;
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float xx = Mathf.Pow(vec.x, 2f);
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float yy = Mathf.Pow(vec.y, 2f);
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float denominator = xx + yy;
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if(denominator == 0)
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return point;
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float xy = vec.x * vec.y;
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//float moleculey = yy *
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return new Vector2(xx, xy);
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}
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public static Vector2 Projection(this Vector2 point, Vector2 start, Vector2 end)
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{
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Vector2 ab = end - start;
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Vector2 ap = point - start;
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return start + ab * Vector2.Dot(ap, ab) / ab.sqrMagnitude;
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}
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/// <summary>
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/// ʸÁ¿Õý½»»¯
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/// </summary>
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/// <param name="vec"></param>
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/// <returns></returns>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector2 Orthogonalization(this Vector2 vec)
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=> new Vector2(
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(float)Math.Round(vec.x),
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(float)Math.Round(vec.y)
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);
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector2 Min(this Vector2 a, Vector2 b)
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{
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return new Vector2(Math.Min(a.x, b.x), Math.Min(a.y, b.y));
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector2 Max(this Vector2 a, Vector2 b)
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{
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return new Vector2(Math.Max(a.x, b.x), Math.Max(a.y, b.y));
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static float MinElement(this Vector2 a)
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{
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return Math.Min(a.x, a.y);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static float MaxElement(this Vector2 a)
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{
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return Math.Max(a.x, a.y);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector2 Abs(this Vector2 a)
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{
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return new Vector2(Math.Abs(a.x), Math.Abs(a.y));
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}
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/// <summary>
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/// »ñȡʸÁ¿¸÷Öá·ûºÅ
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/// </summary>
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/// <param name="vec"></param>
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/// <returns></returns>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector2 Sign(this Vector2 vec)
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=> new Vector2(
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Math.Sign(vec.x),
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Math.Sign(vec.y)
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);
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static float Cross(this Vector2 lhs, Vector2 rhs)
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=> lhs.x * rhs.y - rhs.x * lhs.y;
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/// <summary>
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/// ÑÓбÏ߶ÔÆëÒ»¸öµã
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/// </summary>
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/// <param name="point"></param>
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/// <param name=""></param>
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Vector2 ObliqueAlign(this Vector2 point, Vector2 constPoint, out float exec)
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{
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float b1 = point.y - point.x, b2 = constPoint.y - constPoint.x;
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float dt = b1 + (b2 - b1);
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exec = dt * MacroMath.Sqrt22;
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Vector2 ab = constPoint - point;
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bool cool = ab.x * ab.y < 0;
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return exec * (cool ? Vector2.one : new Vector2(-1, 1));
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}
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}
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}
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