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DESKTOP-P4IRLQG\mkazh
221 lines
8.3 KiB
C
221 lines
8.3 KiB
C
/*
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Header for PLY polygon files.
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- Greg Turk, March 1994
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A PLY file contains a single polygonal _object_.
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An object is composed of lists of _elements_. Typical elements are
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vertices, faces, edges and materials.
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Each type of element for a given object has one or more _properties_
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associated with the element type. For instance, a vertex element may
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have as properties three floating-point values x,y,z and three unsigned
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chars for red, green and blue.
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---------------------------------------------------------------
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Copyright (c) 1994 The Board of Trustees of The Leland Stanford
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Junior University. All rights reserved.
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Permission to use, copy, modify and distribute this software and its
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documentation for any purpose is hereby granted without fee, provided
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that the above copyright notice and this permission notice appear in
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all copies of this software and that you do not sell the software.
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THE SOFTWARE IS PROVIDED "AS IS" AND WITHOUT WARRANTY OF ANY KIND,
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EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef __PLY_FILE_H__
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#define __PLY_FILE_H__
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#ifndef WIN32
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#define _strdup strdup
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <stddef.h>
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#include <string.h>
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#define PLY_ASCII 1 /* ascii PLY file */
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#define PLY_BINARY_BE 2 /* binary PLY file, big endian */
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#define PLY_BINARY_LE 3 /* binary PLY file, little endian */
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#define PLY_BINARY_NATIVE 4 /* binary PLY file, same endianness as current architecture */
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#define PLY_OKAY 0 /* ply routine worked okay */
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#define PLY_ERROR -1 /* error in ply routine */
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/* scalar data types supported by PLY format */
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#define PLY_START_TYPE 0
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#define PLY_CHAR 1
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#define PLY_SHORT 2
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#define PLY_INT 3
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#define PLY_UCHAR 4
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#define PLY_USHORT 5
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#define PLY_UINT 6
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#define PLY_FLOAT 7
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#define PLY_DOUBLE 8
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#define PLY_INT_8 9
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#define PLY_UINT_8 10
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#define PLY_INT_16 11
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#define PLY_UINT_16 12
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#define PLY_INT_32 13
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#define PLY_UINT_32 14
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#define PLY_FLOAT_32 15
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#define PLY_FLOAT_64 16
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#define PLY_END_TYPE 17
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#define PLY_SCALAR 0
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#define PLY_LIST 1
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#define PLY_STRIP_COMMENT_HEADER 0
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typedef struct PlyProperty { /* description of a property */
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char *name; /* property name */
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int external_type; /* file's data type */
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int internal_type; /* program's data type */
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int offset; /* offset bytes of prop in a struct */
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int is_list; /* 1 = list, 0 = scalar */
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int count_external; /* file's count type */
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int count_internal; /* program's count type */
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int count_offset; /* offset byte for list count */
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}
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PlyProperty;
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typedef struct PlyElement { /* description of an element */
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char *name; /* element name */
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int num; /* number of elements in this object */
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int size; /* size of element (bytes) or -1 if variable */
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int nprops; /* number of properties for this element */
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PlyProperty **props; /* list of properties in the file */
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char *store_prop; /* flags: property wanted by user? */
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int other_offset; /* offset to un-asked-for props, or -1 if none*/
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int other_size; /* size of other_props structure */
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} PlyElement;
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typedef struct PlyOtherProp { /* describes other properties in an element */
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char *name; /* element name */
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int size; /* size of other_props */
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int nprops; /* number of properties in other_props */
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PlyProperty **props; /* list of properties in other_props */
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} PlyOtherProp;
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typedef struct OtherData { /* for storing other_props for an other element */
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void *other_props;
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} OtherData;
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typedef struct OtherElem { /* data for one "other" element */
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char *elem_name; /* names of other elements */
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int elem_count; /* count of instances of each element */
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OtherData **other_data; /* actual property data for the elements */
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PlyOtherProp *other_props; /* description of the property data */
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} OtherElem;
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typedef struct PlyOtherElems { /* "other" elements, not interpreted by user */
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int num_elems; /* number of other elements */
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OtherElem *other_list; /* list of data for other elements */
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} PlyOtherElems;
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typedef struct PlyFile { /* description of PLY file */
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FILE *fp; /* file pointer */
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int file_type; /* ascii or binary */
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float version; /* version number of file */
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int nelems; /* number of elements of object */
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PlyElement **elems; /* list of elements */
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int num_comments; /* number of comments */
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char **comments; /* list of comments */
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int num_obj_info; /* number of items of object information */
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char **obj_info; /* list of object info items */
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PlyElement *which_elem; /* which element we're currently writing */
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PlyOtherElems *other_elems; /* "other" elements from a PLY file */
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} PlyFile;
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/* memory allocation */
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extern char *my_alloc();
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#define myalloc(mem_size) my_alloc((mem_size), __LINE__, __FILE__)
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#ifndef ALLOCN
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#define REALLOCN(PTR,TYPE,OLD_N,NEW_N) \
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{ \
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if ((OLD_N) == 0) \
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{ ALLOCN((PTR),TYPE,(NEW_N));} \
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else \
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{ \
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(PTR) = (TYPE *)realloc((PTR),(NEW_N)*sizeof(TYPE)); \
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if (((PTR) == NULL) && ((NEW_N) != 0)) \
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{ \
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fprintf(stderr, "Memory reallocation failed on line %d in %s\n", \
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__LINE__, __FILE__); \
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fprintf(stderr, " tried to reallocate %d->%d\n", \
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(OLD_N), (NEW_N)); \
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exit(-1); \
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} \
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if ((NEW_N)>(OLD_N)) \
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memset((char *)(PTR)+(OLD_N)*sizeof(TYPE), 0, \
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((NEW_N)-(OLD_N))*sizeof(TYPE)); \
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} \
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}
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#define ALLOCN(PTR,TYPE,N) \
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{ (PTR) = (TYPE *) calloc(((unsigned)(N)),sizeof(TYPE));\
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if ((PTR) == NULL) { \
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fprintf(stderr, "Memory allocation failed on line %d in %s\n", \
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__LINE__, __FILE__); \
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exit(-1); \
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} \
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}
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#define FREE(PTR) { free((PTR)); (PTR) = NULL; }
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#endif
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/*** delcaration of routines ***/
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extern PlyFile *ply_write(FILE *, int, const char **, int);
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extern PlyFile *ply_open_for_writing( const char *, int, const char **, int, float *);
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extern void ply_describe_element(PlyFile *, char *, int, int, PlyProperty *);
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extern void ply_describe_property(PlyFile *, const char *, const PlyProperty *);
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extern void ply_element_count(PlyFile *, const char *, int);
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extern void ply_header_complete(PlyFile *);
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extern void ply_put_element_setup(PlyFile *, const char *);
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extern void ply_put_element(PlyFile *, void *);
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extern void ply_put_comment(PlyFile *, char *);
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extern void ply_put_obj_info(PlyFile *, char *);
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extern PlyFile *ply_read(FILE *, int *, char ***);
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extern PlyFile *ply_open_for_reading( const char *, int *, char ***, int *, float *);
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extern PlyProperty **ply_get_element_description(PlyFile *, char *, int*, int*);
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extern void ply_get_element_setup( PlyFile *, char *, int, PlyProperty *);
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extern int ply_get_property(PlyFile *, char *, const PlyProperty *);
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extern PlyOtherProp *ply_get_other_properties(PlyFile *, char *, int);
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extern void ply_get_element(PlyFile *, void *);
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extern char **ply_get_comments(PlyFile *, int *);
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extern char **ply_get_obj_info(PlyFile *, int *);
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extern void ply_close(PlyFile *);
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extern void ply_get_info(PlyFile *, float *, int *);
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extern PlyOtherElems *ply_get_other_element (PlyFile *, char *, int);
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extern void ply_describe_other_elements ( PlyFile *, PlyOtherElems *);
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extern void ply_put_other_elements (PlyFile *);
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extern void ply_free_other_elements (PlyOtherElems *);
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extern void ply_describe_other_properties(PlyFile *, PlyOtherProp *, int);
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extern int equal_strings(const char *, const char *);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !__PLY_FILE_H__ */
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