acm GBR HLV转换

#include <stdio.h>
#include <string>
#include <iostream>
#include <algorithm>
#include <string.h>
using namespace std;
void RGB2HSV(double R, double G, double B, double &H, double &S, double &V)
{
     // r,g,b values are from 0 to 1
    // h = [0,360], s = [0,1], v = [0,1]
    // if s == 0, then h = -1 (undefined)
    double min, max, delta,tmp;
    tmp = R>G?G:R;
    min = tmp>B?B:tmp;
    tmp = R>G?R:G;
    max = tmp>B?tmp:B;
	R/=255; G/=255; B/=255;
	
	min/=255;
	max /= 255;
    V = max; // v
    delta = max - min;
    if( max != 0 )
		S = delta / max; // s
    else
    {
    	// r = g = b = 0 // s = 0, v is undefined
		S = 0;
		H = 0;
    	return;
    }
	if (delta == 0){
		H = 0;
		return;
	}
	else if(R == max){
		if (G >= B)
        	H = (G - B) / delta; // between yellow & magenta
		else
			H = (G - B) / delta + 6.0;
	}
	else if( G == max )
        H = 2.0 + ( B - R ) / delta; // between cyan & yellow
	else if (B == max)
        H = 4.0 + ( R - G ) / delta; // between magenta & cyan
    H *= 60.0; // degrees
}
void RGB2HSL(double R, double G, double B, double &H, double &S, double &L)
{
     // r,g,b values are from 0 to 1
    // h = [0,360], s = [0,1], v = [0,1]
    // if s == 0, then h = -1 (undefined)
    double min, max, delta,tmp;
    tmp = R>G?G:R;
    min = tmp>B?B:tmp;
    tmp = R>G?R:G;
    max = tmp>B?tmp:B;
	R/=255; G/=255; B/=255;
	
	min/=255;
	max /= 255;
    L = (max+min)/2; // v
    delta = max - min;
	if(L==0 || delta == 0)
		S = 0;
	else if(L <= 0.5 && L >0)
		S =(max-min)/(2*L);
	else
		S =(max-min)/(2-2*L);
	if (delta == 0){
		H = 0;
		return;
	}
	else if(R == max){
		if (G >= B)
        	H = (G - B) / delta; // between yellow & magenta
		else
			H = (G - B) / delta + 6.0;
	}
	else if( G == max )
        H = 2.0 + ( B - R ) / delta; // between cyan & yellow
	else if (B == max)
        H = 4.0 + ( R - G ) / delta; // between magenta & cyan
    H *= 60.0; // degrees
}
 
//函数把val转到r、g、b里面
void HSV2RGB(double H, double S, double V, double &R, double &G, double &B)
{
 //hsv to rgb
	S/=100;
	V/=100;
	double C = V *S;
	H /= 60;
	double tp;
	if(int(H) % 2 - 1 > 0)	tp =int(H) % 2 - 1;
	else
		tp = 1-int(H) % 2 ;
	double X = C*(1- tp);
	double m = V-C;
if(H<1)
	{
		R = (C+m+ 0.005)*255;
		G = (X+ m+ 0.005)*255;
		B = (0 +m+ 0.005)*255;
		return;
	}
	if(H<2)
	{
		R = (X +m+ 0.005)*255;
		G = (C +m+ 0.005)*255;
		B = (0 +m+ 0.005)*255;
		return;
	}
	if(H<3)
	{
		R = (0 + m+ 0.005)*255;
		G =	(C + m+ 0.005)*255;
		B =	(X + m+ 0.005)*255;
		return;
	}
	if(H<4)
	{
		R = (0 + m+ 0.005)*255;
		G =	(X + m+ 0.005)*255;
		B =	(C + m+ 0.005)*255;
		return;
	}
	if(H<5)
	{
		R = (X + m+ 0.005)*255;
		G = (0 + m+ 0.005)*255;
		B = (C + m+ 0.005)*255;
		return;
	}
	if(H<6)
	{
		R = (C + m + 0.005)*255;
		G = (0 + m + 0.005)*255;
		B = (X + m + 0.005)*255;
		return;
	}
}
void HSL2RGB(double H, double S, double L, double &R, double &G, double &B)
{
	L/=100;
	S/=100;
	
	double tp;
	if(2*L-1 >= 0)	tp = 2*L-1;
	else
		tp = 1-2*L;
	double C =(1-tp)*S; 
	H /= 60;
	d
	if(int(H) % 2 - 1 > 0)	tp =int(H) % 2 - 1;
	else
		tp = 1-int(H) % 2 ;
	double X = C*(1- tp);
	double m = L - C*0.5;
	if(H<1)
	{
		R = (C+m+ 0.005)*255;
		G = (X+ m+ 0.005)*255;
		B = (0 +m+ 0.005)*255;
		return;
	}
	if(H<2)
	{
		R = (X +m+ 0.005)*255;
		G = (C +m+ 0.005)*255;
		B = (0 +m+ 0.005)*255;
		return;
	}
	if(H<3)
	{
		R = (0 + m+ 0.005)*255;
		G =	(C + m+ 0.005)*255;
		B =	(X + m+ 0.005)*255;
		return;
	}
	if(H<4)
	{
		R = (0 + m+ 0.005)*255;
		G =	(X + m+ 0.005)*255;
		B =	(C + m+ 0.005)*255;
		return;
	}
	if(H<5)
	{
		R = (X + m+ 0.005)*255;
		G = (0 + m+ 0.005)*255;
		B = (C + m+ 0.005)*255;
		return;
	}
	if(H<6)
	{
		R = (C + m + 0.005)*255;
		G = (0 + m + 0.005)*255;
		B = (X + m + 0.005)*255;
		return;
	}
	
}
int main()
{
	freopen("read.txt", "r", stdin);
	char str1[100], str2[100];
	while(cin >> str1)
	{
		double a, b, c;
		double tp1, tp2, tp3;
		//cin >> str2 >> a >> b >>c; 
		if(strcmp(str1, "RGB") == 0)
		{
			scanf("%s", str2);
			if(strcmp(str2, "RGB") == 0) 
			{
				scanf("%lf %lf %lf", &a, &b, &c);
				cout << "RGB" << ' ' <<int(a) << ' ' << int(b) << ' ' << int(c) <<endl;
			}
			else if(strcmp(str2, "HSL") == 0)	
			{
				scanf("%lf %lf%% %lf%%", &a, &b, &c);
				double r, g, f;
				HSL2RGB(a, b, c, r, g, f);
				cout << "RGB" << ' ' << int(r+0.5) << ' ' << int(g+0.5) << ' ' << int(f+0.5) <<endl;
			}
			else
			{
				scanf("%lf %lf%% %lf%%", &a, &b, &c);
				double r, g, f;
				HSV2RGB(a, b, c, r,g, f);
				cout << "RGB" << ' ' << int(r+0.5) << ' ' << int(g+0.5) << ' ' << int(f+0.5) <<endl;
			}
		}
		else if(strcmp(str1, "HSL") == 0)
		{
			scanf("%s", str2);
			if(strcmp(str2, "HSL") == 0)
			{
				scanf("%lf %lf%% %lf%%", &a, &b, &c);
				cout << "HSL" << ' '<< int(a)  << ' ' << int(b) << '%' << ' '<<int(c) << '%' <<endl;
			}
			else if(strcmp(str2, "RGB") == 0)
			{
				scanf("%lf %lf %lf", &a, &b, &c);
				RGB2HSL(a, b, c, tp1, tp2, tp3);
				cout << "HSL" << ' '<< int(tp1+0.5)  << ' '<< int((tp2+0.005)*100) << '%' << ' ' << int((tp3+0.005)*100) << '%' <<endl;
			}
			else
			{
				scanf("%lf %lf%% %lf%%", &a, &b, &c);
				double r, g, f;
				HSV2RGB(a, b, c, r, g, f);
				RGB2HSL(r, g, f, tp1, tp2, tp3);
				cout << "HSL" << ' '<< int(a)  << ' '<< int((tp2+0.005)*100) << '%' << ' ' << int((tp3+0.005)*100) << '%' <<endl;
			}
		}
		else
		{
			scanf("%s", str2);
			if(strcmp(str2, "RGB") == 0)
			{
				scanf("%lf %lf %lf", &a, &b, &c);
				RGB2HSV(a, b, c, tp1, tp2, tp3);
				cout << "HSV" << ' ' << int(tp1+0.5)  << ' '<< int((tp2+0.005)*100) << '%' << ' ' << int((tp3+0.005)*100) << '%' <<endl;
			}
			else if(strcmp(str2, "HSL") == 0)
			{
				scanf("%lf %lf%% %lf%%", &a, &b, &c);
				double r, g, f;
				HSL2RGB(a, b, c, r, g, f);
				RGB2HSV(r, g, f, tp1, tp2, tp3);
				cout << "HSV" << ' '<< int(a)  << ' '<< int((tp2+0.005)*100) << '%' << ' ' << int((tp3+0.005)*100) << '%' <<endl;
			}
			else
			{
				scanf("%lf %lf%% %lf%%", &a, &b, &c);
				cout << "HSV" << ' '<< int(a)  << ' ' << int(b) << '%' << ' '<<int(c) << '%' <<endl;
			}
		}
	}
	return 0;
}

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