// SPDX-FileCopyrightText: 2025 Erin Catto

// SPDX-FileCopyrightText: 2025 Ikpil Choi(ikpil@naver.com)

// SPDX-License-Identifier: MIT

using System;

namespace Box2D.NET

{

public struct B2GraphColor

{

// This bitset is indexed by bodyId so this is over-sized to encompass static bodies

// however I never traverse these bits or use the bit count for anything

// This bitset is unused on the overflow color.

//

// Dirk suggested having a uint64_t per body that tracks the graph color membership

// but I think this would make debugging harder and be less flexible. With the bitset

// I can trivially increase the number of graph colors beyond 64. See usage of b2CountSetBits

// for validation.

public B2BitSet bodySet;

// cache friendly arrays

public B2Array<B2ContactSim> contactSims;

public B2Array<B2JointSim> jointSims;

// transient

// TODO: @ikpil, check union

// union

//{

public ArraySegment<B2ContactConstraintWide> wideConstraints;

public ArraySegment<B2ContactConstraint> overflowConstraints;

//};

public int wideConstraintCount;

}

}