hasufell/half-edge
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Implement parsing of the faces (only plain for now)

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This is not yet the HE_face structure!
This commit is contained in:
hasufell 2014-05-07 21:51:47 +02:00
parent 2887dd2117
commit 1a2c9767ab
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GPG Key ID: 220CD1C5BDEED020
2 changed files with 25 additions and 2 deletions
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26
parser.c
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@ -50,7 +50,9 @@ HE_face *parse_obj(char const * const filename)
*str_ptr_newline = NULL, *str_ptr_newline = NULL,
*str_tmp_ptr = NULL; *str_tmp_ptr = NULL;
const size_t vert_size = sizeof(HE_vert); const size_t vert_size = sizeof(HE_vert);
HE_vert *vertices = malloc(vert_size); HE_vert *vertices = malloc(vert_size),
*vert_tmp;
FACE face_v = NULL;
/* read the whole file into string */ /* read the whole file into string */
string = read_file(filename); string = read_file(filename);
@ -60,6 +62,7 @@ HE_face *parse_obj(char const * const filename)
printf("file content\n%s\n\n", string); printf("file content\n%s\n\n", string);
vc = 1; vc = 1;
fc = 1;
str_tmp_ptr = strtok_r(string, "\n", &str_ptr_newline); str_tmp_ptr = strtok_r(string, "\n", &str_ptr_newline);
while (str_tmp_ptr && *str_tmp_ptr) { while (str_tmp_ptr && *str_tmp_ptr) {
@ -93,8 +96,27 @@ HE_face *parse_obj(char const * const filename)
/* exceeds 3 dimensions, malformed vertice */ /* exceeds 3 dimensions, malformed vertice */
if (strtok_r(NULL, " ", &str_ptr_space)) if (strtok_r(NULL, " ", &str_ptr_space))
return NULL; return NULL;
} else if (!strcmp(str_tmp_ptr, "f")) { /* parse faces */ } else if (!strcmp(str_tmp_ptr, "f")) { /* parse faces */
/* TODO */ char *myint = NULL;
unsigned int i = 0;
FACE tmp_ptr = NULL;
/* fill both HE_edge and HE_face */
tmp_ptr = realloc(face_v, sizeof(FACE*) * fc);
CHECK_PTR_VAL(tmp_ptr);
face_v = tmp_ptr;
face_v[fc - 1] = NULL;
while ((myint = strtok_r(NULL, " ", &str_ptr_space))) {
unsigned int *tmp_ptr = NULL;
i++;
tmp_ptr = realloc(face_v[fc - 1], sizeof(FACE**) * (i + 1));
CHECK_PTR_VAL(tmp_ptr);
tmp_ptr[i - 1] = (unsigned int) atoi(myint);
tmp_ptr[i] = 0; /* so we can iterate over it */
face_v[fc - 1] = tmp_ptr;
}
fc++;
} }
str_tmp_ptr = strtok_r(NULL, "\n", &str_ptr_newline); str_tmp_ptr = strtok_r(NULL, "\n", &str_ptr_newline);

1
types.h
View File

@ -25,6 +25,7 @@
*/ */
#define STD_FILE_BUF 4096 #define STD_FILE_BUF 4096
typedef unsigned int** FACE;
typedef struct HE_edge HE_edge; typedef struct HE_edge HE_edge;
typedef struct HE_vert HE_vert; typedef struct HE_vert HE_vert;