shp-multipatch.h

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/*
 * Read ESRI shapefiles
 *
 * Copyright (C) 2023 Andreas Vögele
 *
 * This library is free software; you can redistribute it and/or modify it
 * under either the terms of the ISC License or the same terms as Perl.
 */
 
/* SPDX-License-Identifier: ISC OR Artistic-1.0-Perl OR GPL-1.0-or-later */
 
#ifndef _SHAPEREADER_SHP_MULTIPATCH_H
#define _SHAPEREADER_SHP_MULTIPATCH_H
 
#include "shp-pointz.h"
#include <stddef.h>
 
typedef enum shp_part_type_t {
    SHP_PART_TYPE_TRIANGLE_STRIP = 0,
    SHP_PART_TYPE_TRIANGLE_FAN = 1,
    SHP_PART_TYPE_OUTER_RING = 2,
    SHP_PART_TYPE_INNER_RING = 3,
    SHP_PART_TYPE_FIRST_RING = 4,
    SHP_PART_TYPE_RING = 5
} shp_part_type_t;
 
typedef struct shp_multipatch_t {
    double x_min;        
    double x_max;        
    double y_min;        
    double y_max;        
    double z_min;        
    double z_max;        
    double m_min;        
    double m_max;        
    size_t num_parts;    
    size_t num_points;   
    const char *parts;   /* Index to first point in part */
    const char *types;   /* Part types */
    const char *points;  /* X and Y coordinates */
    const char *z_array; /* Z coordinates */
    const char *m_array; /* Measures */
} shp_multipatch_t;
 
extern size_t shp_multipatch_points(const shp_multipatch_t *multipatch,
                                    size_t part_num,
                                    shp_part_type_t *part_type, size_t *start,
                                    size_t *end);
 
extern void shp_multipatch_pointz(const shp_multipatch_t *multipatch,
                                  size_t point_num, shp_pointz_t *pointz);
 
#endif