A small internal struct-like class used by the Bullet collision code to represent an unordered pair of vertex indices. It stores the two vertex indices in a canonical order, provides a simple GetHash and Equals(ref) for comparisons.
/* * C# / XNA port of Bullet (c) 2011 Mark Neale <[email protected]> * * Bullet Continuous Collision Detection and Physics Library * Copyright (c) 2003-2008 Erwin Coumans http://www.bulletphysics.com/ * * This software is provided 'as-is', without any express or implied warranty. * In no event will the authors be held liable for any damages arising from * the use of this software. * * Permission is granted to anyone to use this software for any purpose, * including commercial applications, and to alter it and redistribute it * freely, subject to the following restrictions: * * 1. The origin of this software must not be misrepresented; you must not * claim that you wrote the original software. If you use this software * in a product, an acknowledgment in the product documentation would be * appreciated but is not required. * 2. Altered source versions must be plainly marked as such, and must not be * misrepresented as being the original software. * 3. This notice may not be removed or altered from any source distribution. */ // Adapted from BulletXNA 73b2e1b9: namespace isolation, no XNA rendering, one type per file. #nullable disable #pragma warning disable CS1591, CS0168, CS0219, CS0414, CS0660, CS0661, CS0659, CS0693, CS8981, CS0108, CS0114 using System; using System.Collections.Generic; using System.Diagnostics; using HumanoidRetargeter.Core.Formats.Mmd.Bullet.LinearMath; namespace HumanoidRetargeter.Core.Formats.Mmd.Bullet.BulletCollision; internal class InternalVertexPair { public InternalVertexPair(int v0, int v1) { m_v0 = v1 > v0 ? v1 : v0; m_v1 = v1 > v0 ? v0 : v1; } public int GetHash() { return m_v0 + (m_v1 << 16); } public bool Equals(ref InternalVertexPair other) { return m_v0 == other.m_v0 && m_v1 == other.m_v1; } public int m_v0; public int m_v1; }