About

CL-MAPSCRIPT provides CFFI-based Common Lisp bindings for MapServer. Distribution provides C glue code that is compiled into a shared library and wrapped into CFFI-based common lisp bindings.

Sample code

Loading the library:

(asdf:oos 'asdf:load-op :cffi)
;; define proper location of the C glue
(cffi:define-foreign-library libmapscript
    (:unix (:or "./libmapscript.so")))
(asdf:oos 'asdf:load-op :cl-mapscript)

Basic operations:

;; creating a new point object
(new_pointObj ox oy 0.0d0 0.0d0)

;; loading a MAP file where mapFile is a string with MAP file name
(new_mapObj mapFile)

Sample usage

CL-MAPSCRIPT distribution contains a RENDER-POINT function that is used to render a point with given geographical coordinates using the settings of a given MAP file. Rendered coordinates can then be used to put a graphical mark on top of a rendered map image in HTML pages or elsewhere to create interactive graphics.

For example lets consider several cities in Kyiv oblast, Ukraine: Kyiv, Dymer, and Brovary and place clickable marks on a map of the Kyiv oblast:

(multiple-value-bind (pixelX pixelY relX relY)
    (render-point 30.523611121111d0 50.45000001d0 "kyiv.map")
  (format t "Kyiv: pixelX=~5F, pixelY=~5F, relX=~5F, relY=~5F~%" pixelX pixelY relX relY))
(multiple-value-bind (pixelX pixelY relX relY)
    (render-point 30.309166676667d0 50.787222232222d0 "kyiv.map")
  (format t "Dymer: pixelX=~5F, pixelY=~5F, relX=~5F, relY=~5F~%" pixelX pixelY relX relY))
(multiple-value-bind (pixelX pixelY relX relY)
    (render-point 30.790277787778d0 50.511388898889d0 "kyiv.map")
  (format t "Brovary: pixelX=~5F, pixelY=~5F, relX=~5F, relY=~5F~%" pixelX pixelY relX relY))

After the calculations we will obtain:

Kyiv: pixelX=171.5, pixelY=141.0, relX=42.88, relY=46.99
Dymer: pixelX=136.1, pixelY=105.4, relX=34.03, relY=35.14
Brovary: pixelX=210.4, pixelY=133.5, relX= 52.6, relY=44.49

The "pixelX" and "pixelY" values provide information necessary to place corresponding clickable marks over the map using the relative positioning scheme inside the image-containing div block.

Карта Київської області Київ Димер Бровари

Current status

Library provides most basic means to interact with the MapServer/MapScript functionality.

License

Code is distributed under the terms of the BSD License:

Copyright (c) 2012, Victor Anyakin <anyakinvictor@yahoo.com>
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of the  nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL  BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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