spacegame/include/ply.h

#ifndef PLY_H
#define PLY_H

#include <stddef.h>

typedef enum {
  PLY_FORMAT_INVALID = -1,
  PLY_FORMAT_ASCII,
  PLY_FORMAT_LE,
  PLY_FORMAT_BE,
} PlyFormatType;

typedef enum {
  PLY_HEADER_INVALID = -1,
  PLY_HEADER_COMMENT,
  PLY_HEADER_END,
  PLY_HEADER_ELEMENT,
  PLY_HEADER_PROPERTY,
} PlyHeaderType;

typedef enum {
  PLY_TYPE_INVALID = -1,
  PLY_TYPE_CHAR,
  PLY_TYPE_UCHAR,
  PLY_TYPE_SHORT,
  PLY_TYPE_USHORT,
  PLY_TYPE_INT,
  PLY_TYPE_UINT,
  PLY_TYPE_FLOAT,
  PLY_TYPE_DOUBLE,
} PlyPropertyType;

typedef struct PlyPropertyStruct {
  char* name;
  PlyPropertyType count;
  PlyPropertyType element;

  void* elements;
  void* counts;
  struct PlyPropertyStruct* next;
} PlyProperty;

typedef struct PlyElementStruct {
  char* name;
  int   count;
  PlyProperty* properties;

  struct PlyElementStruct* next;
} PlyElement;


const char* const ply_formats[] = {
  "ascii",
  "binary_little_endian",
  "binary_big_endian"
};

const char* const ply_header_items[] = {
  "comment",
  "end_header",
  "element",
  "property",
};

const char* const ply_type_strings[] = {
  "char",
  "uchar",
  "short",
  "ushort",
  "int",
  "uint",
  "float",
  "double",
};

size_t ply_type_sizes[] = {
  1,
  1,
  2,
  2,
  4,
  4,
  4,
  8,
};

PlyElement* ply_load_mesh(char* filename);
void ply_free_mesh(PlyElement* elements_head);

#endif