add new package poly2tri (#6421)

* add poly2tri pkg

* Install only .h files without .cc files.

packages/p/poly2tri/xmake.lua

@@ -0,0 +1,48 @@
+package("poly2tri")
+    set_homepage("https://github.com/jhasse/poly2tri")
+    set_description("2D constrained Delaunay triangulation library")
+    set_license("BSD-3-Clause")
+
+    add_urls("https://github.com/jhasse/poly2tri.git")
+    add_versions("2024.02.08", "13d64e75a84dd8f36673a7eaf022e8e9fdd1f88b")
+
+    add_deps("cmake")
+
+    on_install(function (package)
+        if package:config("shared") then
+            io.replace("CMakeLists.txt", "if(poly2tri_target_type STREQUAL SHARED_LIBRARY)", "if(1)", {plain = true})
+        else
+            io.replace("poly2tri/common/dll_symbol.h", "define P2T_DLL_SYMBOL", "define P2T_DLL_SYMBOL P2T_COMPILER_DLLEXPORT", {plain = true})
+            io.replace("CMakeLists.txt", "if(poly2tri_target_type STREQUAL SHARED_LIBRARY)", "if(0)", {plain = true})
+        end
+        io.replace("CMakeLists.txt", "add_library(poly2tri ${SOURCES} ${HEADERS})", [[
+            add_library(poly2tri ${SOURCES} ${HEADERS})
+            install(TARGETS ${PROJECT_NAME}
+                RUNTIME DESTINATION bin
+                LIBRARY DESTINATION lib
+                ARCHIVE DESTINATION lib
+            )
+            install(DIRECTORY "${CMAKE_SOURCE_DIR}/poly2tri" DESTINATION include FILES_MATCHING PATTERN "*.h")
+        ]], {plain = true})
+        local configs = {}
+        table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:is_debug() and "Debug" or "Release"))
+        table.insert(configs, "-DBUILD_SHARED_LIBS=" .. (package:config("shared") and "ON" or "OFF"))
+        import("package.tools.cmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            void test() {
+                std::vector<p2t::Point*> polyline {
+                    new p2t::Point(350, 500),
+                    new p2t::Point(1050, 1700)
+                };
+                std::vector<p2t::Point*> hole {
+                    new p2t::Point(591, 1350),
+                    new p2t::Point(550, 2050)
+                };
+                p2t::CDT cdt{ polyline };
+                cdt.AddHole(hole);
+            }
+        ]]}, {configs = {languages = "c++14"}, includes = "poly2tri/poly2tri.h"}))
+    end)