151 lines
3.6 KiB
C++
151 lines
3.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////////////////////////
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// OpenGL Mathematics Copyright (c) 2005 - 2012 G-Truc Creation (www.g-truc.net)
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Created : 2011-09-19
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// Updated : 2011-09-19
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// Licence : This source is under MIT licence
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// File : test/gtc/random.cpp
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///////////////////////////////////////////////////////////////////////////////////////////////////
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#include <glm/glm.hpp>
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#include <glm/gtc/random.hpp>
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#include <glm/gtc/epsilon.hpp>
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#include <iostream>
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int test_linearRand()
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{
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int Error = 0;
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{
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float ResultFloat = 0.0f;
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double ResultDouble = 0.0f;
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for(std::size_t i = 0; i < 100000; ++i)
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{
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ResultFloat += glm::linearRand(-1.0f, 1.0f);
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ResultDouble += glm::linearRand(-1.0, 1.0);
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}
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Error += glm::equalEpsilon(ResultFloat, 0.0f, 0.0001f);
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Error += glm::equalEpsilon(ResultDouble, 0.0, 0.0001);
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assert(!Error);
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}
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return Error;
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}
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int test_circularRand()
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{
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int Error = 0;
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{
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std::size_t Max = 100000;
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float ResultFloat = 0.0f;
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double ResultDouble = 0.0f;
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double Radius = 2.0f;
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for(std::size_t i = 0; i < Max; ++i)
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{
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ResultFloat += glm::length(glm::circularRand(1.0f));
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ResultDouble += glm::length(glm::circularRand(Radius));
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}
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Error += glm::equalEpsilon(ResultFloat, float(Max), 0.01f) ? 0 : 1;
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Error += glm::equalEpsilon(ResultDouble, double(Max) * double(Radius), 0.01) ? 0 : 1;
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assert(!Error);
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}
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return Error;
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}
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int test_sphericalRand()
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{
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int Error = 0;
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{
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std::size_t Max = 100000;
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float ResultFloatA = 0.0f;
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float ResultFloatB = 0.0f;
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float ResultFloatC = 0.0f;
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double ResultDoubleA = 0.0f;
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double ResultDoubleB = 0.0f;
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double ResultDoubleC = 0.0f;
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for(std::size_t i = 0; i < Max; ++i)
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{
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ResultFloatA += glm::length(glm::sphericalRand(1.0f));
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ResultDoubleA += glm::length(glm::sphericalRand(1.0));
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ResultFloatB += glm::length(glm::sphericalRand(2.0f));
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ResultDoubleB += glm::length(glm::sphericalRand(2.0));
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ResultFloatC += glm::length(glm::sphericalRand(3.0f));
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ResultDoubleC += glm::length(glm::sphericalRand(3.0));
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}
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Error += glm::equalEpsilon(ResultFloatA, float(Max), 0.01f) ? 0 : 1;
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Error += glm::equalEpsilon(ResultDoubleA, double(Max), 0.0001) ? 0 : 1;
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Error += glm::equalEpsilon(ResultFloatB, float(Max * 2), 0.01f) ? 0 : 1;
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Error += glm::equalEpsilon(ResultDoubleB, double(Max * 2), 0.0001) ? 0 : 1;
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Error += glm::equalEpsilon(ResultFloatC, float(Max * 3), 0.01f) ? 0 : 1;
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Error += glm::equalEpsilon(ResultDoubleC, double(Max * 3), 0.01) ? 0 : 1;
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assert(!Error);
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}
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return Error;
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}
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int test_diskRand()
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{
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int Error = 0;
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{
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float ResultFloat = 0.0f;
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double ResultDouble = 0.0f;
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for(std::size_t i = 0; i < 100000; ++i)
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{
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ResultFloat += glm::length(glm::diskRand(2.0f));
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ResultDouble += glm::length(glm::diskRand(2.0));
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}
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Error += ResultFloat < 200000.f ? 0 : 1;
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Error += ResultDouble < 200000.0 ? 0 : 1;
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assert(!Error);
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}
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return Error;
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}
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int test_ballRand()
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{
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int Error = 0;
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{
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float ResultFloat = 0.0f;
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double ResultDouble = 0.0f;
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for(std::size_t i = 0; i < 100000; ++i)
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{
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ResultFloat += glm::length(glm::ballRand(2.0f));
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ResultDouble += glm::length(glm::ballRand(2.0));
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}
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Error += ResultFloat < 200000.f ? 0 : 1;
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Error += ResultDouble < 200000.0 ? 0 : 1;
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assert(!Error);
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}
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return Error;
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}
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int main()
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{
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int Error = 0;
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Error += test_linearRand();
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Error += test_circularRand();
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Error += test_sphericalRand();
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Error += test_diskRand();
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Error += test_ballRand();
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return Error;
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}
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