Code/HumanoidRetargeter/Core/Formats/Mmd/Bullet/BulletCollision/BroadphaseBenchmark.cs

A small static utility class from the Bullet collision port containing simple random helpers and a timing output helper. It provides unsigned random integers, unit floats and a method that reads a Stopwatch to compute time values, intended for benchmarking broadphase performance.

/*
 * 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 static class BroadphaseBenchmark
{
	public static int UnsignedRand()
	{
		return UnsignedRand(BulletGlobals.RAND_MAX - 1);
	}

	public static int UnsignedRand(int range)
	{
		return (BulletGlobals.gRandom.Next(range + 1));
	}

	public static float UnitRand()
	{
		return (UnsignedRand(16384) / 16384f);
	}

	public static void OutputTime(String name, Stopwatch sw, uint count)
	{
		ulong us = (ulong)sw.ElapsedMilliseconds;
		ulong ms = (us + 500) / 1000;
		float sec = us / (1000f * 1000f);
	}
}