//计算二维平面数据的三方向导数，因为有很多方法可以得到xyz三列数据文件，所以数据类型为xyz的三列数据文件
//数据排列方式: x坐标 y坐标 v数值
//坐标方向: z轴向下的右旋坐标系
#include "datafunc.h"
#include "grad_z.h"
#include "grad_hx.h"
#include "grad_hy.h"
void disp_help()
{
	cout<<"grad2d 0.2 - calculate horizontal and vertical gradients for an equal-grid plane data set"<<endl<<endl
		<<"usage: grad2d -t<input-file> -x|-y|-z -r<xmin>/<xmax>/<ymin>/<ymax> -i<x-spacing>/<y-spacing> -w<power> [-c<col-x>,<col-y>,<col-val>] [-o<output-file>]"<<endl<<endl
		<<"syntax: " << endl << "-t\tinput table data. The program takes a three-columns table data file. The order of columns are \'x\', \'y\'' and \'point-value\'. lines starts with '#' will be skipped."<<endl
		<<"-x|-y|-z\tselect calculating objective. Only one objective can be chosen at a time."<<endl
		<<"-r\tspecify the range of calculating area."<<endl
		<<"-i\tspecify intervals of the input data."<<endl
		<<"-c\tset data columns, the default is 0,1,2."<<endl
		<<"-w\torders of output gradient data."<<endl
		<<"-o\tspecify output-file's name. \'_gradhx|_gradhy|_gradz\' will be attached at the end of the input-name if \'-o\' is absent."<<endl<<endl
		<<"example: grad2d -tin.dat -x -r0/100/0/100 -i10/10 -w1 -oout.dat"<<endl;
}

int main(int argc, char* argv[])
{
	if (argc==1)
	{
		disp_help();
	}
	else
	{
		int caltype = 0;
		int power = 1;
		char cmd_type[1024] = {0};
		char filename[1024] = {0};
		char filetype[1024] = {0};
		char outname[1024] = {0};
		char colname[1024] = "0,1,2";
		double range[4] = {1e+30,1e+30,1e+30,1e+30};
		double interval[2] = {1e+30,1e+30};
		for (int i = 1; i < argc; i++)
		{
			sscanf(argv[i],"%2s",cmd_type);
			if (!strcmp(cmd_type,RANGE))
			{
				if (4!=sscanf(argv[i],"%*2s%lf/%lf/%lf/%lf",&range[0],&range[1],&range[2],&range[3]))
				{
					cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[i]<<endl;
					return 0;
				}
				else
				{
					if (range[0]>range[1])
					{
						cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[i]<<endl;
						return 0;
					}
					else if (range[2]>range[3])
					{
						cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[i]<<endl;
						return 0;
					}
				}
			}
			else if (!strcmp(cmd_type,DATA))
			{
				if (2!=sscanf(argv[i],"%*2s%[^.]%s",filename,filetype))
				{
					cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[i]<<endl;
					return 0;
				}
			}
			else if (!strcmp(cmd_type,COLS))
			{
				if (1!=sscanf(argv[i],"%*2s%s",colname))
				{
					cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[i]<<endl;
					return 0;
				}
			}
			else if (!strcmp(cmd_type,POWER))
			{
				if (1!=sscanf(argv[i],"%*2s%d",&power))
				{
					cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[i]<<endl;
					return 0;
				}
			}
			else if (!strcmp(cmd_type,INTERVAL))
			{
				if (2!=sscanf(argv[i],"%*2s%lf/%lf",&interval[0],&interval[1]))
				{
					cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[i]<<endl;
					return 0;
				}
				else
				{
					if (interval[0]<=0||interval[1]<=0)
					{
						cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[i]<<endl;
						return 0;
					}
				}
			}
			else if (!strcmp(cmd_type,HORIZATION_X)) caltype = 1;
			else if (!strcmp(cmd_type,HORIZATION_Y)) caltype = 2;
			else if (!strcmp(cmd_type,VERTICAL)) caltype = 3;
			else if (!strcmp(cmd_type,OUTPUT))
			{
				if (-1==sscanf(argv[i],"%*2s%s",outname))
				{
					cout<<BOLDRED<<"==> "<<RESET<<"bad syntax: "<<argv[i]<<endl;
					return 0;
				}
			}
		}

		switch(caltype)
		{
			case 1:
			{
				if(!strcmp(outname,""))
				{
					strcat(outname,filename);
					strcat(outname,"_gradhx.xyz");
				}
				strcat(filename,filetype);
				cal_2d_hx(filename,outname,colname,range,interval,power);
			}break;
			case 2:
			{
				if(!strcmp(outname,""))
				{
					strcat(outname,filename);
					strcat(outname,"_gradhy.xyz");
				}
				strcat(filename,filetype);
				cal_2d_hy(filename,outname,colname,range,interval,power);
			}break;
			case 3:
			{
				if(!strcmp(outname,""))
				{
					strcat(outname,filename);
					strcat(outname,"_gradz.xyz");
				}
				strcat(filename,filetype);
				cal_2d_z(filename,outname,colname,range,interval,power);
			}break;
			default:
			{
				cout<<BOLDRED<<"==> "<<RESET<<"bad cal_type"<<endl;
				return 0;
			}
		}
	}
	return 0;
}