139 lines
3.9 KiB
C++
139 lines
3.9 KiB
C++
/*
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* Created by Brett Terpstra 6920201 on 14/10/22.
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* Copyright (c) Brett Terpstra 2022 All Rights Reserved
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*
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* This file is used to include common standard library headers
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* There are some things {String, Maps} that I use a lot
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* Plus common defines that might be useful in the future.
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*
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*/
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#ifndef STEP_2_STD_H
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#define STEP_2_STD_H
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/**
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* includes
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*/
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#include <unordered_map>
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#include <vector>
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#include "util/logging.h"
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#include <string>
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#include <algorithm>
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#include <cctype>
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#include <locale>
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#include <sstream>
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#include <algorithm>
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#include <limits>
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#include <random>
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/**
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* defines
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*/
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#define RAYTRACING_VERSION_MAJOR 0
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#define RAYTRACING_VERSION_MINOR 0
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#define RAYTRACING_VERSION_PATCH 1
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#define RAYTRACING_VERSION_STRING "0.0.1"
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/**
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* Constants
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*/
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const double infinity = std::numeric_limits<double>::infinity();
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const double PI = 3.1415926535897932385;
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/**
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* classes
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*/
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static inline double degreeeToRadian(double deg){
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return deg * PI/180.0;
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}
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namespace Raytracing {
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class Random {
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private:
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std::random_device rd; // obtain a random number from hardware
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std::mt19937 gen;
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std::uniform_real_distribution<double> doubleDistr {0, 1};
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public:
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Random(): gen(std::mt19937(long(rd.entropy() * 691 * 691))) {}
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Random(double min, double max): gen(std::mt19937(long(rd.entropy() * 691 * 691))), doubleDistr{min, max} {}
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double getDouble(){
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return doubleDistr(gen);
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}
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};
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class String {
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public:
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static inline std::string toLowerCase(const std::string& s){
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std::stringstream str;
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std::for_each(s.begin(), s.end(), [&str](unsigned char ch) {
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str << (char) std::tolower(ch);
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});
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return str.str();
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}
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static inline std::string toUpperCase(const std::string& s){
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std::stringstream str;
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std::for_each(s.begin(), s.end(), [&str](unsigned char ch) {
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str << (char) std::toupper(ch);
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});
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return str.str();
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}
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// taken from https://stackoverflow.com/questions/216823/how-to-trim-an-stdstring
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// would've preferred to use boost lib but instructions said to avoid external libs
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// trim from start (in place)
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static inline std::string& ltrim(std::string& s) {
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s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](unsigned char ch) {
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return !std::isspace(ch);
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}));
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return s;
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}
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// trim from end (in place)
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static inline std::string& rtrim(std::string& s) {
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s.erase(std::find_if(s.rbegin(), s.rend(), [](unsigned char ch) {
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return !std::isspace(ch);
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}).base(), s.end());
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return s;
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}
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// trim from both ends (in place)
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static inline std::string& trim(std::string& s) {
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ltrim(s);
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rtrim(s);
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return s;
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}
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// trim from start (copying)
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static inline std::string ltrim_copy(std::string s) {
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ltrim(s);
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return s;
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}
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// trim from end (copying)
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static inline std::string rtrim_copy(std::string s) {
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rtrim(s);
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return s;
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}
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// trim from both ends (copying)
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static inline std::string trim_copy(std::string s) {
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trim(s);
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return s;
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}
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};
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}
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static Raytracing::Random rnd {};
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static inline double getRandomDouble(){
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return rnd.getDouble();
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}
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static inline double clamp(double val, double min, double max) {
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if (val < min)
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return min;
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if (val > max)
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return max;
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return val;
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}
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#endif //STEP_2_STD_H
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