A single class representing a node in a bounding volume hierarchy for the GIMPACT/Bullet collision system. It stores an AABB and an int used either as a data index for leaves or a negative escape index for internal nodes, with accessors to get/set those meanings.
/* * * C# / XNA port of Bullet (c) 2011 Mark Neale <[email protected]> * This source file is part of GIMPACT Library. For the latest info, see http://gimpact.sourceforge.net/ Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371. email: [email protected] 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.Diagnostics; using HumanoidRetargeter.Core.Formats.Mmd.Bullet.LinearMath; namespace HumanoidRetargeter.Core.Formats.Mmd.Bullet.BulletCollision; internal class GIM_BVH_TREE_NODE { public AABB m_bound = new AABB(); protected int m_escapeIndexOrDataIndex; public GIM_BVH_TREE_NODE() { m_escapeIndexOrDataIndex = 0; } public bool IsLeafNode() { //skipindex is negative (internal node), triangleindex >=0 (leafnode) return (m_escapeIndexOrDataIndex >= 0); } public int GetEscapeIndex() { //btAssert(m_escapeIndexOrDataIndex < 0); return -m_escapeIndexOrDataIndex; } public void SetEscapeIndex(int index) { m_escapeIndexOrDataIndex = -index; } public int GetDataIndex() { //btAssert(m_escapeIndexOrDataIndex >= 0); return m_escapeIndexOrDataIndex; } public void SetDataIndex(int index) { m_escapeIndexOrDataIndex = index; } }