c60078f77b
See #2515 Also add header and copyright notice where missing. (missing copyright info extracted from git history) This commit only touches files under liblwgeom/ and postgis/ dirs. git-svn-id: http://svn.osgeo.org/postgis/trunk@14484 b70326c6-7e19-0410-871a-916f4a2858ee
106 lines
3.9 KiB
C
106 lines
3.9 KiB
C
/**********************************************************************
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*
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* PostGIS - Spatial Types for PostgreSQL
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* http://postgis.net
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*
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* PostGIS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* PostGIS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with PostGIS. If not, see <http://www.gnu.org/licenses/>.
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*
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**********************************************************************
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*
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* Copyright 2013 Nicklas Avén
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*
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**********************************************************************/
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/**********************************************************************
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*
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* PostGIS - Spatial Types for PostgreSQL
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* http://postgis.net
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* Copyright 2013 Nicklas Avén
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*
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* This is free software; you can redistribute and/or modify it under
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* the terms of the GNU General Public Licence. See the COPYING file.
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*
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**********************************************************************/
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#include "liblwgeom_internal.h"
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#include "lwgeom_log.h"
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#include <limits.h>
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#include "bytebuffer.h"
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/* Maximum number of geometry dimmensions that internal arrays can hold */
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#define MAX_N_DIMS 4
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#define MAX_BBOX_SIZE 64
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#define MAX_SIZE_SIZE 8
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/**
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* Header true/false flags
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*/
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#define FIRST_BYTE_SET_BBOXES(flag, bool) ((flag) = ((bool) ? (flag) | 0x01 : (flag) & (~0x01)))
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#define FIRST_BYTE_SET_SIZES(flag, bool) ((flag) = ((bool) ? (flag) | 0x02 : (flag) & (~0x02)))
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#define FIRST_BYTE_SET_IDLIST(flag, bool) ((flag) = ((bool) ? (flag) | 0x04 : (flag) & (~0x04)))
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#define FIRST_BYTE_SET_EXTENDED(flag, bool) ((flag) = ((bool) ? (flag) | 0x08 : (flag) & (~0x08)))
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#define FIRST_BYTE_SET_EMPTY(flag, bool) ((flag) = ((bool) ? (flag) | 0x10 : (flag) & (~0x10)))
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/**
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* Macros for manipulating the 'type_precision' int. An int8_t used as follows:
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* Type 4 bits
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* Precision 4 bits
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*/
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#define TYPE_PREC_SET_TYPE(flag, type) ((flag) = ((flag) & 0xF0) | (((type) & 0x0F)))
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#define TYPE_PREC_SET_PREC(flag, prec) ((flag) = ((flag) & 0x0F) | (((prec) & 0x0F) << 4))
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#define HIGHER_DIM_SET_HASZ(flag, bool) ((flag) = ((bool) ? (flag) | 0x01 : (flag) & (~0x01)))
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#define HIGHER_DIM_SET_HASM(flag, bool) ((flag) = ((bool) ? (flag) | 0x02 : (flag) & (~0x02)))
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#define HIGHER_DIM_SET_PRECZ(flag, prec) ((flag) = ((flag) & 0xE3) | (((prec) & 0x07) << 2))
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#define HIGHER_DIM_SET_PRECM(flag, prec) ((flag) = ((flag) & 0x1F) | (((prec) & 0x07) << 5))
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typedef struct
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{
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/* Options defined at start */
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uint8_t variant;
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int8_t prec_xy;
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int8_t prec_z;
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int8_t prec_m;
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float factor[4]; /*What factor to multiply the coordiinates with to get the requested precision*/
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} TWKB_GLOBALS;
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typedef struct
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{
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uint8_t variant; /*options that change at runtime*/
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bytebuffer_t *header_buf;
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bytebuffer_t *geom_buf;
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int hasz;
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int hasm;
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const int64_t *idlist;
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int64_t bbox_min[MAX_N_DIMS];
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int64_t bbox_max[MAX_N_DIMS];
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int64_t accum_rels[MAX_N_DIMS]; /*Holds the acculmulated relative values*/
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} TWKB_STATE;
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static int lwgeom_to_twkb_buf(const LWGEOM *geom, TWKB_GLOBALS *global_values, TWKB_STATE *ts);
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static int lwpoint_to_twkb_buf(const LWPOINT *line, TWKB_GLOBALS *global_values, TWKB_STATE *ts);
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static int lwline_to_twkb_buf(const LWLINE *line, TWKB_GLOBALS *global_values, TWKB_STATE *ts);
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static int lwpoly_to_twkb_buf(const LWPOLY *poly, TWKB_GLOBALS *global_values, TWKB_STATE *ts);
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static int lwcollection_to_twkb_buf(const LWCOLLECTION *col, TWKB_GLOBALS *global_values, TWKB_STATE *ts);
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static int lwgeom_write_to_buffer(const LWGEOM *geom, TWKB_GLOBALS *global_values, TWKB_STATE *parent_state);
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