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/**********************************************************************
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* $Id: php_proj.c 9937 2010-03-11 15:17:39Z aboudreault $
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* Purpose: PHP wraper function to PROJ4 projection module.
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* Author: Yewondwossen Assefa, DM Solutions Group (assefa@dmsolutions.ca)
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**********************************************************************
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* Copyright (c) 2000-2005, Y. Assefa, DM Solutions Group inc.
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in
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* all copies of this Software or works derived from this Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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**********************************************************************
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* Revision 1.10 2005/06/14 16:03:36 dan
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* Updated copyright date to 2005
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* Revision 1.9 2005/01/04 22:55:27 assefa
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* Add PHP5 support for windows (Bug 1100).
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* Revision 1.8 2002/03/08 23:16:41 assefa
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* Revision 1.7 2002/01/22 19:18:54 dan
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* Fixed a typo in pj_transform() docs
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* Revision 1.6 2002/01/22 19:18:17 dan
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* Took pj_datum_transform() out of docs to discourage its use.
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* Revision 1.5 2001/09/25 14:52:54 assefa
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* Add pj_transform function.
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* Revision 1.4 2001/02/23 20:35:57 assefa
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* Free function does not work for PHP4. Disable it for now.
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* Revision 1.3 2001/01/09 05:24:41 dan
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* Fixes to build with PHP 4.0.4
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* Revision 1.2 2000/11/08 15:44:16 dan
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* Correct compilation errors with php4.
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* Revision 1.1 2000/11/02 16:39:55 dan
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**********************************************************************/
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* This is a PHP module that gives acces to basic PROJ4 projection
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* There following functions available in this module :
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* 1) pj_init : create and initializes a projection structures
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* PJ pj_init(array_of_parameters)
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* Example : $projarray[0] = "proj=lcc";
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* $projarray[1] = "ellps=GRS80";
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* $projarray[2] = "lat_0=49";
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* $projarray[3] = "lon_0=-95";
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* $projarray[4] = "lat_1=49";
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* $projarray[5] = "lat_2=77";
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* $pj = pj_init($projarray);
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* 2) pj_fwd : Performs a projection from lat/long coordinates to
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* cartesian coordinates.
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* retrun_array pj_fwd(double lat, double long, PJ pj)
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* Example : $lat = 45.25;
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* $ret = pj_fwd($ingeox, $ingeoy, $pj);
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* printf("geo x = %f<br>\n", $ret["u"]);
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* printf("geo y = %f<br>\n",$ret["v"]);
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* 3) pj_inv : Performs a projection from cartesian coordinates to
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* lat/long coordinates .
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* retrun_array pj_fwd(double geox, double geoy, PJ pj)
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* Example : $ingeox = 1537490.335842;
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* $ingeoy = -181633.471555;
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* $ret = pj_inv($ingeox, $ingeoy, $pj);
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* printf("lat = %f<br>\n", $ret["u"]);
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* printf("lon = %f<br>\n",$ret["v"]);
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* 4) pj_transform : pj_transform(PJ pjsrc, PJ pjdst, double x, double y)
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* transforms coordinates from source projection to
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* destination projection.
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* Example : $projarray[0] = "proj=lcc";
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* $projarray[1] = "ellps=GRS80";
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* $projarray[2] = "lat_0=49";
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* $projarray[3] = "lon_0=-95";
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* $projarray[4] = "lat_1=49";
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* $projarray[5] = "lat_2=77";
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* $projarray[6] = "";
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* $pjlcc = pj_init($projarray);
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* $projarray2[0] = "proj=latlong";
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* $pjlat = pj_init($projarray2);
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* $ingeox = 1537490.335842;
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* $ingeoy = -181633.471555;
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* $ret = pj_transform($pjlcc, $pjlat, $ingeox, $ingeoy);
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* 5) pj_free : frees PJ structure
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* void pj_free(PJ pj);
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**********************************************************************/
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#include <projects.h>
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#include "php_mapscript_util.h"
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#include "php_globals.h"
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#include "maperror.h"
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#if defined(_WIN32) && !defined(__CYGWIN__)
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#define DLEXPORT ZEND_DLEXPORT
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#define PHP_PROJ_VERSION "1.0.000 (Nov. 1, 2000)"
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/*=====================================================================
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*====================================================================*/
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DLEXPORT void php_proj_pj_init(INTERNAL_FUNCTION_PARAMETERS);
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DLEXPORT void php_proj_pj_fwd(INTERNAL_FUNCTION_PARAMETERS);
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DLEXPORT void php_proj_pj_inv(INTERNAL_FUNCTION_PARAMETERS);
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DLEXPORT void php_proj_pj_transform(INTERNAL_FUNCTION_PARAMETERS);
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DLEXPORT void php_proj_pj_datum_transform(INTERNAL_FUNCTION_PARAMETERS);
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DLEXPORT void php_proj_pj_free(INTERNAL_FUNCTION_PARAMETERS);
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DLEXPORT void php_info_proj(void);
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DLEXPORT int php_init_proj(INIT_FUNC_ARGS);
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DLEXPORT int php_end_proj(SHUTDOWN_FUNC_ARGS);
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DLEXPORT void ttt(INTERNAL_FUNCTION_PARAMETERS);
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PHP_MINFO_FUNCTION(phpproj);
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DLEXPORT void php_info_proj(void);
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static zend_class_entry *proj_class_entry_ptr;
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#define PHPMS_GLOBAL(a) a
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static int le_projobj;
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function_entry php_proj_functions[] = {
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{"pj_fwd", php_proj_pj_fwd, NULL},
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{"pj_inv", php_proj_pj_inv, NULL},
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{"pj_init", php_proj_pj_init, NULL},
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{"pj_transform", php_proj_pj_transform, NULL},
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{"pj_datum_transform", php_proj_pj_datum_transform, NULL},
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{"pj_free", php_proj_pj_free, NULL},
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php3_module_entry php_proj_module_entry = {
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#if ZEND_MODULE_API_NO >= 20010901
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STANDARD_MODULE_HEADER,
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"PHPPROJ", php_proj_functions, php_init_proj, php_end_proj,
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#if ZEND_MODULE_API_NO >= 20010901
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"phpproj, php4.1version", /* extension version number (string) */
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STANDARD_MODULE_PROPERTIES
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DLEXPORT php3_module_entry *get_module(void)
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return &php_proj_module_entry;
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function_entry php_proj_class_functions[] = {
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DLEXPORT void ttt(INTERNAL_FUNCTION_PARAMETERS)
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PHP_MINFO_FUNCTION(phpproj)
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DLEXPORT void php_info_proj(void)
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php3_printf(" Version %s<br>\n", PHP_PROJ_VERSION);
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php3_printf("<BR>\n");
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DLEXPORT int php_init_proj(INIT_FUNC_ARGS)
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zend_class_entry tmp_class_entry;
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PHPMS_GLOBAL(le_projobj) =
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register_list_destructors(php_proj_pj_free,
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INIT_CLASS_ENTRY(tmp_class_entry, "proj", php_proj_class_functions);
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proj_class_entry_ptr = zend_register_internal_class(&tmp_class_entry TSRMLS_CC);
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DLEXPORT int php_end_proj(SHUTDOWN_FUNC_ARGS)
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#if !defined DEG_TO_RAD
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#define DEG_TO_RAD 0.0174532925199432958
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#if !defined RAD_TO_DEG
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#define RAD_TO_DEG 57.29577951308232
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/**********************************************************************
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* _php_proj_build_proj_object
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**********************************************************************/
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static long _php_proj_build_proj_object(PJ *pj,
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HashTable *list, pval *return_value TSRMLS_DC)
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pj_id = php3_list_insert(pj, PHPMS_GLOBAL(le_projobj));
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_phpms_object_init(return_value, pj_id, php_proj_class_functions,
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PHP4_CLASS_ENTRY(proj_class_entry_ptr) TSRMLS_CC);
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/************************************************************************/
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/* DLEXPORT void php_proj_pj_init(INTERNAL_FUNCTION_PARAMETERS) */
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/* Creates and initialize a PJ structure that can be used with */
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/* proj_fwd and proj_inv function. */
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/* array : array of parameters */
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/* $projarray[0] = "proj=lcc"; */
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/* $projarray[1] = "ellps=GRS80"; */
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/* $projarray[2] = "lat_0=49"; */
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/* $projarray[3] = "lon_0=-95"; */
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/* $projarray[4] = "lat_1=49"; */
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/* $projarray[5] = "lat_2=77"; */
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/* $pj = pj_init($projarray); */
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/************************************************************************/
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DLEXPORT void php_proj_pj_init(INTERNAL_FUNCTION_PARAMETERS)
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pval *pArrayOfParams = NULL;
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pval **pParam = NULL;
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HashTable *list=NULL;
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char **papszBuf = NULL;
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// char *strttt = NULL;
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//ttt = strlen(strttt);
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/* -------------------------------------------------------------------- */
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/* extract parameters. */
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/* -------------------------------------------------------------------- */
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if (getParameters(ht, 1, &pArrayOfParams) != SUCCESS)
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if (pArrayOfParams->type == IS_ARRAY)
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nParamCount = _php3_hash_num_elements(pArrayOfParams->value.ht);
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if (nParamCount <= 0)
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papszBuf = (char **) malloc((nParamCount+2)*sizeof(char *));
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for (i = 0; i < nParamCount; i++)
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if (_php3_hash_index_find(pArrayOfParams->value.ht, i,
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(void **)&pParam) != FAILURE)
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convert_to_string((*pParam));
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if ((*pParam)->value.str.val != NULL)
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papszBuf[i] = strdup((*pParam)->value.str.val);
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pj = pj_init(nParamCount, papszBuf);
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_php_proj_build_proj_object(pj, list, return_value TSRMLS_CC);
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/************************************************************************/
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/* DLEXPORT void php_proj_pj_fwd(INTERNAL_FUNCTION_PARAMETERS) */
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/* Performs a projection from lat/long coordinates to */
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/* cartesian coordinates (projection defines in the pj parameter) */
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/* - double p1 : latitude (in decimal degree ) */
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/* - double p2 : longitude (in decimal degree ) */
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/* - PJ pj : valid projection structure (see pj_init) */
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/* $ret = pj_fwd($lat, $lon, $pj); */
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/* printf("geo x = %f<br>\n", $ret["u"]); */
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/* printf("geo y = %f<br>\n",$ret["v"]); */
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/************************************************************************/
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DLEXPORT void php_proj_pj_fwd(INTERNAL_FUNCTION_PARAMETERS)
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HashTable *list=NULL;
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projUV pntReturn = {0,0};
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/* -------------------------------------------------------------------- */
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/* extract parameters. */
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/* -------------------------------------------------------------------- */
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if (getParameters(ht, 3, &p1, &p2, &pj) != SUCCESS)
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/* -------------------------------------------------------------------- */
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/* initilize return array. */
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/* -------------------------------------------------------------------- */
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if (array_init(return_value) == FAILURE)
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convert_to_double(p1);
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convert_to_double(p2);
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popj = (PJ *)_phpms_fetch_handle(pj,
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PHPMS_GLOBAL(le_projobj), list TSRMLS_CC);
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pnt.u = p2->value.dval * DEG_TO_RAD;
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pnt.v = p1->value.dval * DEG_TO_RAD;
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pntReturn = pj_fwd(pnt, popj);
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add_assoc_double(return_value, "u", pntReturn.u);
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add_assoc_double(return_value, "v", pntReturn.v);
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/************************************************************************/
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/* DLEXPORT void php_proj_pj_inv(INTERNAL_FUNCTION_PARAMETERS) */
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/* Performs a projection from cartesian coordinates */
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/* (projection defines in the pj parameter) to lat/long */
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/* Return vales are in decimal degrees. */
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/* - double p1 : projected coordinates (x) */
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/* - double p2 : projected coordinates (y) */
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/* - PJ pj : valid projection structure (see pj_init) */
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/* $ingeox = 1537490.335842; */
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/* $ingeoy = -181633.471555; */
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/* $ret = pj_inv($ingeox, $ingeoy, $pj); */
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/* printf("latitude = %f<br>\n", $ret["u"]); */
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/* printf("longitude = %f<br>\n",$ret["v"]); */
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/************************************************************************/
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DLEXPORT void php_proj_pj_inv(INTERNAL_FUNCTION_PARAMETERS)
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HashTable *list=NULL;
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projUV pntReturn = {0,0};
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/* -------------------------------------------------------------------- */
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/* extract parameters. */
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/* -------------------------------------------------------------------- */
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if (getParameters(ht, 3, &p1, &p2, &pj) != SUCCESS)
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/* -------------------------------------------------------------------- */
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/* initilize return array. */
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/* -------------------------------------------------------------------- */
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if (array_init(return_value) == FAILURE)
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convert_to_double(p1);
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convert_to_double(p2);
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popj = (PJ *)_phpms_fetch_handle(pj,
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PHPMS_GLOBAL(le_projobj), list TSRMLS_CC);
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pnt.u = p1->value.dval;
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pnt.v = p2->value.dval;
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pntReturn = pj_inv(pnt, popj);
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pntReturn.u *= RAD_TO_DEG;
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pntReturn.v *= RAD_TO_DEG;
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add_assoc_double(return_value, "u", pntReturn.v);
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add_assoc_double(return_value, "v", pntReturn.u);
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/************************************************************************/
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/* DLEXPORT void php_proj_pj_transform(INTERNAL_FUNCTION_PARAMETERS) */
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/* Transform coordinates from source projection to destination */
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/************************************************************************/
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DLEXPORT void php_proj_pj_transform(INTERNAL_FUNCTION_PARAMETERS)
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HashTable *list=NULL;
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pval *pjin, *pjout = NULL;
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/* -------------------------------------------------------------------- */
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/* extract parameters. */
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/* -------------------------------------------------------------------- */
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if (getParameters(ht, 4, &pjin , &pjout, &p1, &p2) != SUCCESS)
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/* -------------------------------------------------------------------- */
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/* initilize return array. */
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/* -------------------------------------------------------------------- */
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if (array_init(return_value) == FAILURE)
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convert_to_double(p1);
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convert_to_double(p2);
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in = (PJ *)_phpms_fetch_handle(pjin,
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PHPMS_GLOBAL(le_projobj), list TSRMLS_CC);
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out = (PJ *)_phpms_fetch_handle(pjout,
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PHPMS_GLOBAL(le_projobj), list TSRMLS_CC);
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pnt.u = p1->value.dval;
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pnt.v = p2->value.dval;
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if( pj_is_latlong(in) )
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error = pj_transform(in, out, 1, 0,
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&(pnt.u), &(pnt.v), &z );
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if( pj_is_latlong(out) )
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php_error(E_ERROR,"Error in pj_transform");
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add_assoc_double(return_value, "u", pnt.u);
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add_assoc_double(return_value, "v", pnt.v);
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/************************************************************************/
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/* void php_proj_pj_datum_transform(INTERNAL_FUNCTION_PARAMETERS) */
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/* Datum from source projection to destination */
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/************************************************************************/
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DLEXPORT void php_proj_pj_datum_transform(INTERNAL_FUNCTION_PARAMETERS)
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HashTable *list=NULL;
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pval *pjin, *pjout = NULL;
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/* -------------------------------------------------------------------- */
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/* extract parameters. */
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/* -------------------------------------------------------------------- */
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if (getParameters(ht, 4, &pjin , &pjout, &p1, &p2) != SUCCESS)
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/* -------------------------------------------------------------------- */
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/* initilize return array. */
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/* -------------------------------------------------------------------- */
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if (array_init(return_value) == FAILURE)
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convert_to_double(p1);
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convert_to_double(p2);
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in = (PJ *)_phpms_fetch_handle(pjin,
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PHPMS_GLOBAL(le_projobj), list TSRMLS_CC);
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out = (PJ *)_phpms_fetch_handle(pjout,
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PHPMS_GLOBAL(le_projobj), list TSRMLS_CC);
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pnt.u = p1->value.dval;
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pnt.v = p2->value.dval;
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if( pj_is_latlong(in) )
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error = pj_transform(in, out, 1, 0,
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&(pnt.u), &(pnt.v), &z );
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if( pj_is_latlong(out) )
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php_error(E_ERROR,"Error in pj_datum_transform");
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add_assoc_double(return_value, "u", pnt.u);
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add_assoc_double(return_value, "v", pnt.v);
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/************************************************************************/
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/* DLEXPORT void php_proj_pj_free(INTERNAL_FUNCTION_PARAMETERS) */
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/************************************************************************/
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DLEXPORT void php_proj_pj_free(INTERNAL_FUNCTION_PARAMETERS)
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/* ==================================================================== */
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/* TODO : freeing does not work properly on PHP4. */
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/* ==================================================================== */
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#ifdef PHP4_BAD_FREEING
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HashTable *list=NULL;
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/* -------------------------------------------------------------------- */
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/* extract parameters. */
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/* -------------------------------------------------------------------- */
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if (getParameters(ht, 1, &pj) != SUCCESS)
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popj = (PJ *)_phpms_fetch_handle(pj,
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PHPMS_GLOBAL(le_projobj), list TSRMLS_CC);
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#endif /* USE_PROJ */
added
removed
mapscript/php/php_proj.c
