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#pragma once
#include <stdbool.h>
#include <stdlib.h>
#define STL_BUFMAX 256
#define STL_STRERROR_INIT \
[STL_OK] = "Success", \
[STL_DONE] = "Done processing", \
[STL_INVALID] = "Invalid stl file", \
[STL_INVALID_ARG] = "Invalid argument", \
[STL_INCOMPLETE] = "Unexpected end of file" \
enum {
STL_OK,
STL_DONE,
STL_INVALID,
STL_INVALID_ARG,
STL_INCOMPLETE,
};
enum {
STL_TYPE_DETECT,
STL_TYPE_ASCII,
STL_TYPE_BINARY,
};
enum {
STL_RES_SOLID_NAME,
STL_RES_HEADER,
STL_RES_TRIANGLE,
STL_RES_FILETYPE
};
struct stl_vertex {
union {
struct {
float x, y, z;
};
struct {
float dim[3];
};
};
};
struct stl_triangle {
struct stl_vertex vtx[3];
struct stl_vertex normal;
};
struct stl_span {
const char *str;
size_t len;
};
struct stl_result {
int type;
union {
struct stl_span solid_name;
struct stl_span header;
struct stl_triangle tri;
int filetype;
};
};
struct stl {
char buf[STL_BUFMAX];
size_t buflen;
const void *chunk;
const void *pos;
size_t nleft;
struct stl_triangle tri;
int type;
union {
struct {
int state;
} ascii;
struct {
int state;
size_t index;
size_t count;
} bin;
};
};
void stl_init(struct stl *stl, int type);
int stl_feed(struct stl *stl, struct stl_result *res,
const void *chunk, size_t size);
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