main.cpp File Reference

Main. More...

#include <stdio.h>
#include "defines.h"

Functions
int	GetTime ()
	Get time.
bool	ReadHeightData (int row, int col, char *filename)
	Read height data.
int	main (int argc, char *argv[])
	Main.

Variables
char	filenamefilename [] = "filelist20x20.txt"
	Name of a file that contains a list of file names.
const int	GRIDSIZE = 20
	Number of DEM files on one side of square grid.
const int	CELLSIZE = 4000
	Number of points on one side of a DEM file.
const int	ARRAYSIZE = CELLSIZE*GRIDSIZE
	Number of points on one side of the whole array of heights.
long long	g_nPointCount = 0LL
	Number of points processed.
long long	g_nBadPointCount = 0LL
	Number of points with bad data processed.
unsigned short **	g_nHeight
	Buffer for packed height data.

Function Documentation

int GetTime

(

)

Get the current time in milliseconds.

Returns

Time in ms.

int main	(	int	argc,
		char *	argv[]
	)

Does initialization, allocates memory, reads the list of file names, reads those files into the height buffer g_pHeight, saves the height buffer into UtahDEMData.bin, deallocates the memory and shuts down.

Parameters

argc	Argument count
argv	Arguments.

Returns

0 for success, 1 for failure.

bool ReadHeightData	(	int	row,
		int	col,
		char *	filename
	)

Read the height data from a single DEM file and put it into the correct place in g_pHeight, which it assumes points to a buffer of the right size.

Parameters

row	Y coordinate of cell.
col	X coordinate of cell.
filename	Name of DEM file to be read.

Returns

true if it succeeds, false if it fails