source: cpp/common/Convert.h @ 958

Last change on this file since 958 was 913, checked in by Maciej Komosinski, 4 years ago

Added a few utility/helper functions

  • Property svn:eol-style set to native
File size: 3.8 KB
Line 
1// This file is a part of Framsticks SDK.  http://www.framsticks.com/
2// Copyright (C) 1999-2015  Maciej Komosinski and Szymon Ulatowski.
3// See LICENSE.txt for details.
4
5#ifndef _CONVERT_H_
6#define _CONVERT_H_
7
8#include "nonstd.h"
9#include "nonstd_math.h"
10#include "nonstd_stl.h"
11#include "2d.h"
12#include <stdint.h>
13
14
15typedef XY<double> Pt2D;
16
17#ifdef LINUX
18#define UINT64_FORMAT "%llu" //we want to avoid this and ambiguous "long long", but gcc does not seem to support I64u (yet?)
19#else
20#define UINT64_FORMAT "%I64u"
21#endif
22
23struct Convert
24{
25public:
26        static int toInt(string s);
27        static float toFloat(string s);
28        static string toLowerCase(string s);
29        static string toUpperCase(string s);
30        static char toLowerCase(char c);
31        static char toUpperCase(char c);
32        template<class T> static string _toString(const T& value);
33        static string toString(unsigned int v);
34        static string toString(int v);
35        static string toString(short v);
36        static string toString(float v);
37        static string toString(double v);
38        static string zeroPad(string s, int l) { while ((int)s.length() < l) s = string("0") + s; return s; }
39        static uint32_t hexToInt(const string& col);
40
41        static double toRadians(double angle) { return angle*M_PI / 180; }
42        static double toDegrees(double angle) { return angle / M_PI * 180; }
43        static double atan_2(double y, double x) { if (x == 0 && y == 0) return 0; else return atan2(y, x); } //needed by borland 5/6 only?
44
45        static double odleglosc_sq(double x1, double y1, double x2, double y2) //odleglosc do kwadratu, wystarczy do porownywania
46        {
47                double dx = x2 - x1, dy = y2 - y1;
48                return dx*dx + dy*dy;
49        }
50        static double odleglosc_sq(const Pt2D& p1, const Pt2D& p2) //odleglosc do kwadratu
51        {
52                return odleglosc_sq(p1.x, p1.y, p2.x, p2.y);
53        }
54
55        static double odleglosc(double x1, double y1, double x2, double y2)     { return sqrt(odleglosc_sq(x1, y1, x2, y2)); }
56        static double odleglosc(const Pt2D& p1, const Pt2D& p2)
57        {
58                return sqrt(odleglosc_sq(p1, p2));
59        }
60
61        //static float odleglosc(int x1,int y1,int x2,int y2) {float dx=x1-x2; float dy=y1-y2; return sqrt(dx*dx+dy*dy);}
62        //static float odleglosc(float x1,float y1,float x2,float y2) {return sqrt(odleglosc_sq(x1,y1,x2,y2));}
63        //static float odleglosc_sq(float x1,float y1,float x2,float y2) {float dx=x1-x2; float dy=y1-y2; return dx*dx+dy*dy;}
64
65        static struct tm localtime(const time_t &timep);//jak ::localtime ale zwraca strukture zamiast wskaznika, ref w parametrze dla wygodnego wywolywania
66        static string asctime(const struct tm &tm);//jak ::asctime ale thread safe i bez glupiego \n na koncu, ref w parametrze dla wygodnego wywolywania
67
68        static std::wstring strTOwstr(const char *s)
69        {
70                string str(s);
71                return std::wstring(str.begin(), str.end());
72        }
73
74        static string wstrTOstr(const wchar_t *s)
75        {
76                wstring str(s);
77                return string(str.begin(), str.end());
78        }
79
80        static string wstrToUtf8(const wchar_t *str);
81#ifdef _WIN32
82        static wstring utf8ToUtf16(const char *str);
83#endif
84};
85
86
87
88struct Angle //normalized angle in radians [0,2pi) and degrees [0,360) with pre-computed sine and cosine and degree as integer [0,359]
89{
90private:
91        double angle; //in radians, read-only
92public:
93        double angle_deg; //read-only
94        int angle_deg_int; //read-only
95
96        Angle() { set(0); }
97        Angle(double k) { set(k); }
98        Angle(Angle &kt) { set(kt.get()); }
99        Angle(double dy, double dx) { set(dy, dx); }
100        Angle(const Pt2D& xy) { set(xy); }
101        void set(double k) { k = fmod(k, M_PI * 2); if (k < 0) k += M_PI * 2; angle = k; sine = sin(k); cosine = cos(k); angle_deg = Convert::toDegrees(angle); angle_deg_int = roundToInt(angle_deg); angle_deg_int %= 360; }
102        void set(double dy, double dx) { set(Convert::atan_2(dy, dx)); }
103        void set(const Pt2D& xy) { set(xy.y, xy.x); }
104        void add(double dk) { set(angle + dk); }
105        void add(Angle &kt) { set(angle + kt.get()); }
106        double get() { return angle; }
107        double sine, cosine;
108};
109
110
111#endif
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