example: rewrite with comprehensive 9-section demo covering all geometry types and operations

Author: peng.li24

example/CMakeLists.txt

@@ -1,8 +1,13 @@
 cmake_minimum_required(VERSION 3.16)
 project(shapelycpp_example LANGUAGES CXX)
 
-find_package(shapelycpp REQUIRED)
 find_package(GEOS REQUIRED)
 
 add_executable(example main.cpp)
-target_link_libraries(example PRIVATE shapelycpp::shapelycpp GEOS::geos_c)
+target_include_directories(example PRIVATE ${CMAKE_SOURCE_DIR}/..)
+target_link_libraries(example PRIVATE GEOS::geos)
+set_target_properties(example PROPERTIES
+    CXX_STANDARD 17
+    CXX_STANDARD_REQUIRED ON
+    CXX_EXTENSIONS OFF
+)