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/*
XYZ file structure utilities
This file is part of alti.
Copyright (C) 2015 slughnaz
alti is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
alti is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with alti. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "tools.h"
#include "xyz.h"
static void read_line (struct data *, const char *);
static void min_max_set (struct data *, struct data *, struct data *);
static void min_max_init (struct data *, struct data *, struct data *);
static void get_file_info (struct data *, struct data *, int *, FILE *);
static void get_file_data (struct map *, FILE *);
extern void
map_create (struct map ** map, const char * file)
{
struct map * newmap;
FILE * stream;
struct data * min;
struct data * max;
int width;
int height;
int step;
stream = fopen(file, "r");
if(stream == NULL)
{
printf("Unable to open file %s\n", file);
exit(EXIT_FAILURE);
}
data_init(&min, 0, 0, 0);
data_init(&max, 0, 0, 0);
width = 0;
height = 0;
step = 0;
get_file_info(min, max, &step, stream);
width = map_get_index(min->x, max->x, step) + 1;
height = map_get_index(min->y, max->y, step) + 1;
map_init(&newmap, min, max, width, height, step);
get_file_data(newmap, stream);
data_deinit(max);
data_deinit(min);
if(stream != NULL)
{
fclose(stream);
}
*map = newmap;
}
static void
get_file_info (struct data * min, struct data * max, int * step, FILE * stream)
{
char buffer[32];
struct data * data;
int stack[2];
data_init(&data, 0, 0, 0);
stack[0] = min->x;
stack[1] = min->x;
fseek(stream, 0, 0);
if(fgets(buffer, 32, stream) != NULL)
{
read_line(data, buffer);
min_max_init(min, max, data);
stack[0] = min->x;
}
while(fgets(buffer, 32, stream) != NULL)
{
read_line(data, buffer);
min_max_set(min, max, data);
if(data->x < stack[0])
{
stack[1] = stack[0];
stack[0] = data->x;
}
else if(data->x < stack[1])
{
stack[1] = data->x;
}
else if(stack[0] == stack[1])
{
stack[1] = data->x;
}
}
*step = stack[1] - stack[0];
data_deinit(data);
}
static void
get_file_data (struct map * map, FILE * stream)
{
char buffer[32];
struct data * data;
int x;
int y;
memset(buffer, 0, 32);
data_init(&data, 0, 0, 0);
x = 0;
y = 0;
fseek(stream, 0, 0);
while(fgets(buffer, 32, stream) != NULL)
{
read_line(data, buffer);
x = map_get_index(map->min->x, data->x, map->step);
y = map_get_index(map->min->y, data->y, map->step);
map->point[x][y].x = data->x;
map->point[x][y].y = data->y;
map->point[x][y].z = data->z;
}
data_deinit(data);
}
static void
read_line (struct data * data, const char * line)
{
char buffer[32];
int i;
int j;
int k;
int values[3];
memset(buffer, 0, 32);
values[0] = 0;
values[1] = 0;
values[2] = 0;
i = 0;
j = 0;
k = 0;
for(i = 0; i < strlen(line); i++)
{
if(line[i] == 9 || line[i] == 10)
{
buffer[j] = 10;
values[k] = atol(buffer);
memset(buffer, 0, 32);
j = 0;
k++;
}
else
{
buffer[j] = line[i];
j++;
}
}
data->x = values[0];
data->y = values[1];
data->z = values[2];
}
static void
min_max_init(struct data * min, struct data * max, struct data * data)
{
data_set(min, data->x, data->y, data->z);
data_set(max, data->x, data->y, data->z);
}
static void
min_max_set (struct data * min, struct data * max, struct data * data)
{
if(data->x < min->x)
{
min->x = data->x;
}
if(data->y < min->y)
{
min->y = data->y;
}
if(data->z < min->z)
{
min->z = data->z;
}
if(data->x > max->x)
{
max->x = data->x;
}
if(data->y > max->y)
{
max->y = data->y;
}
if(data->z > max->z)
{
max->z = data->z;
}
}
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