Support loading polygon from SHP file

Author: Don Gagne

ChangeLog.md

@@ -14,6 +14,7 @@ Note: This file only contains high level features or important fixes.
 * Edit Position dialog available on polygon vertices.
 * Fixed Wing Landing Pattern: Add stop photo/video support. Defaults to on such that doing an RTL will stop camera.
 * Survey Planning: add mode that supports concave polygons
+* Support loading polygons from SHP files
 
 ## 3.4
 

QGCExternalLibs.pri

@@ -89,6 +89,13 @@ exists($$MAVLINKPATH/common) {
 INCLUDEPATH += libs/eigen
 DEFINES += NOMINMAX
 
+#
+# [REQUIRED] shapelib library
+INCLUDEPATH += libs/shapelib
+SOURCES += \
+    libs/shapelib/shpopen.c \
+    libs/shapelib/safileio.c
+
 #
 # [REQUIRED] QWT plotting library dependency. Provides plotting capabilities.
 #

libs/shapelib/AUTHORS

@@ -0,0 +1,2 @@
+Frank Warmerdam <[email protected]> et al.
+ 

libs/shapelib/CMakeLists.txt

@@ -0,0 +1,237 @@
+# Top-level CMakeLists.txt for the CMake-based build and test system
+# of the shapelib software.
+
+# Copyright (C) 2012-2013 Alan W. Irwin
+
+# See README.CMake
+
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Library General Public License as published
+# by the Free Software Foundation; version 2 of the License.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Library General Public License for more details.
+#
+# You should have received a copy of the GNU Library General Public License
+# along with this file; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+
+# It is a fatal error if no working C compiler is available to build
+# the shapelib library and utilities
+project(shapelib C)
+
+message(STATUS "CMake version = ${CMAKE_VERSION}")
+message(STATUS "CMAKE_SYSTEM_NAME = ${CMAKE_SYSTEM_NAME}")
+
+# Version 2.8.5 or above of cmake is currently required for all platforms.
+cmake_minimum_required(VERSION 2.8.5 FATAL_ERROR)
+
+# libraries are all shared by default.
+option(BUILD_SHARED_LIBS "Build shared libraries" ON)
+
+# Use rpath?
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+  # No rpath on Darwin. Setting it will only cause trouble.
+else(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+  option(USE_RPATH "Use -rpath when linking libraries, executables" ON)
+endif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+
+# In windows all created dlls are gathered in the dll directory
+# if you add this directory to your PATH all shared libraries are available
+if(BUILD_SHARED_LIBS AND WIN32 AND NOT CYGWIN)
+  set(LIBRARY_OUTPUT_PATH ${CMAKE_CURRENT_BINARY_DIR}/dll)
+endif(BUILD_SHARED_LIBS AND WIN32 AND NOT CYGWIN)
+
+set(PACKAGE shp)
+
+# Set up install locations.
+set(
+  CMAKE_INSTALL_BINDIR
+  ${CMAKE_INSTALL_PREFIX}/bin
+  CACHE PATH "install location for user executables"
+  )
+
+set(
+  CMAKE_INSTALL_LIBDIR
+  ${CMAKE_INSTALL_PREFIX}/lib
+  CACHE PATH "install location for object code libraries"
+  )
+
+set(
+  CMAKE_INSTALL_INCLUDEDIR
+  ${CMAKE_INSTALL_PREFIX}/include
+  CACHE PATH "install location for C header files"
+  )
+
+set(
+  CMAKE_INSTALL_SHP_DATADIR
+  ${CMAKE_INSTALL_PREFIX}/share/${PACKAGE}
+  CACHE PATH "install location for read-only architecture-independent shp data"
+  )
+
+# Export build information to help other projects link installed
+# shapelib software.  Only one of these signatures is required
+# for the export_shp name.
+install(EXPORT export_shp DESTINATION ${CMAKE_INSTALL_SHP_DATADIR})
+
+# Initial boilerplate done, now build library and executables.
+
+set(lib_SRC
+  shpopen.c
+  dbfopen.c
+  safileio.c
+  shptree.c
+  sbnsearch.c
+  )
+option(SHP_DROP_UNABLE_TO_OPEN_MSG "Drop \"unable to open\" error messages" ON)
+if(SHP_DROP_UNABLE_TO_OPEN_MSG)
+  #define the SHP_DROP_UNABLE_TO_OPEN_MSG C macro for this source file.
+  set_source_files_properties(shpopen.c
+    PROPERTIES
+    COMPILE_DEFINITIONS SHP_DROP_UNABLE_TO_OPEN_MSG
+    )
+endif(SHP_DROP_UNABLE_TO_OPEN_MSG)
+
+add_library(shp ${lib_SRC})
+
+if(WIN32 AND NOT CYGWIN)
+  set_target_properties(shp
+    PROPERTIES
+    COMPILE_DEFINITIONS SHAPELIB_DLLEXPORT
+    )
+endif(WIN32 AND NOT CYGWIN)
+
+if(UNIX)
+    find_library(M_LIB m)
+    if(M_LIB)
+      TARGET_LINK_LIBRARIES(shp -lm)
+    endif()
+endif(UNIX)
+
+set(shp_SOVERSION 1)
+set(shp_VERSION 1.4.1)
+set_target_properties(shp
+  PROPERTIES 
+  SOVERSION ${shp_SOVERSION}
+  VERSION ${shp_VERSION}
+  INSTALL_NAME_DIR "${CMAKE_INSTALL_LIBDIR}"
+  )
+
+if(USE_RPATH)
+  set_target_properties(shp
+    PROPERTIES 
+    INSTALL_RPATH "${CMAKE_INSTALL_LIBDIR}"
+    )
+endif(USE_RPATH)
+
+install(TARGETS shp
+  EXPORT export_shp
+  ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+  )
+
+# executables to be built and installed.
+set(executables
+  shpcreate
+  shpadd
+  shpdump
+  shprewind 
+  dbfcreate
+  dbfadd
+  dbfdump
+  shptreedump
+  )
+
+find_program(BASH_EXECUTABLE bash)
+find_program(SED_EXECUTABLE sed)
+if(BASH_EXECUTABLE AND SED_EXECUTABLE)
+  set(BUILD_TEST ON)
+else(BASH_EXECUTABLE AND SED_EXECUTABLE)
+  message(STATUS "WARNING: sed or bash not available so disabling testing")
+endif(BASH_EXECUTABLE AND SED_EXECUTABLE)
+
+# For the first series of tests, the user needs to have downloaded
+# from http://dl.maptools.org/dl/shapelib/shape_eg_data.zip, unpacked
+# that file, and specified the location of that directory with
+# the cmake option, -DEG_DATA:PATH=whatever
+if(BUILD_TEST)
+  if(EG_DATA)
+    file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/script.sed "s?/u/www/projects/shapelib/eg_data?${EG_DATA}?\n")
+  else(EG_DATA)
+    file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/script.sed "")
+    message(STATUS "WARNING: EG_DATA:PATH not set to point to downloaded eg_data directory so the eg_data part of testing will be ignored.")
+  endif(EG_DATA)
+endif(BUILD_TEST)
+
+foreach(executable ${executables})
+  add_executable(${executable} ${executable}.c)
+  target_link_libraries(${executable} shp)
+  if(USE_RPATH)
+    set_target_properties(${executable}
+      PROPERTIES
+      INSTALL_RPATH "${CMAKE_INSTALL_LIBDIR}"
+      )
+  endif(USE_RPATH)
+  if(BUILD_TEST)
+    get_target_property(${executable}_LOC ${executable} LOCATION)
+    file(APPEND ${CMAKE_CURRENT_BINARY_DIR}/script.sed "s?\\./${executable}?${${executable}_LOC}?\n")
+  endif(BUILD_TEST)
+  install(TARGETS ${executable} DESTINATION ${CMAKE_INSTALL_BINDIR})
+endforeach(executable ${executables})
+
+# Install header
+install(FILES shapefil.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+
+if(BUILD_TEST)
+  # Set up tests:
+
+  enable_testing()
+
+  # Other executables to be built to facilitate tests.
+  foreach(executable shptest shputils)
+    add_executable(${executable} ${executable}.c)
+    target_link_libraries(${executable} shp)
+    get_target_property(${executable}_LOC ${executable} LOCATION)
+    file(APPEND ${CMAKE_CURRENT_BINARY_DIR}/script.sed "s?\\./${executable}?${${executable}_LOC}?\n")
+  endforeach(executable shptest shputils)
+
+  # Write this as a shell script since execute_process cannot handle
+  # anything like redirection.
+  file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/script.sh "${SED_EXECUTABLE} -f script.sed < $1 >| $2")
+  execute_process(
+    COMMAND
+    ${BASH_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/script.sh ${CMAKE_CURRENT_SOURCE_DIR}/tests/test1.sh ${CMAKE_CURRENT_BINARY_DIR}/sed_scripted_test1.sh
+    )
+
+  execute_process(
+    COMMAND
+    ${BASH_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/script.sh ${CMAKE_CURRENT_SOURCE_DIR}/tests/test2.sh ${CMAKE_CURRENT_BINARY_DIR}/sed_scripted_test2.sh
+    )
+
+  execute_process(
+    COMMAND
+    ${BASH_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/script.sh ${CMAKE_CURRENT_SOURCE_DIR}/tests/test3.sh ${CMAKE_CURRENT_BINARY_DIR}/sed_scripted_test3.sh
+    )
+
+  if(EG_DATA)
+    # These tests correspond to everything in test1.sh
+    add_test(
+      NAME test1
+      COMMAND ${BASH_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/sed_scripted_test1.sh
+      )
+  endif(EG_DATA)
+  # These tests correspond to everything in test2.sh
+  add_test(
+    NAME test2
+    COMMAND ${BASH_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/sed_scripted_test2.sh
+    )
+
+  # These tests correspond to everything in test3.sh
+  add_test(
+    NAME test3
+    COMMAND ${BASH_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/sed_scripted_test3.sh
+    )
+endif(BUILD_TEST)