read coords

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 56054cd..78b1194 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,13 +1,15 @@
 cmake_minimum_required(VERSION 3.0.0)
 project(delaunator VERSION 0.1.0)
-
+set (CMAKE_CXX_STANDARD 11)
 if (NOT EXISTS "${PROJECT_SOURCE_DIR}/includes")
     execute_process(COMMAND bash "-c" "(cd ${PROJECT_SOURCE_DIR} && ./fetch-includes.sh)")
 endif()
 # message("PROJECT_SOURCE_DIR ${PROJECT_SOURCE_DIR}")
 
 add_executable(delaunator src/main.cpp)
+add_library(delaunator_lib src/delaunator.cpp)
 target_include_directories (delaunator PRIVATE "${PROJECT_SOURCE_DIR}/includes/rapidjson/include")
+target_link_libraries(delaunator delaunator_lib)
 
 set(CPACK_PROJECT_NAME ${PROJECT_NAME})
 set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})

src/delaunator.cpp

diff --git a/src/delaunator.cpp b/src/delaunator.cpp
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/delaunator.cpp

src/delaunator.h

diff --git a/src/delaunator.h b/src/delaunator.h
new file mode 100644
index 0000000..83e0f87
--- /dev/null
+++ b/src/delaunator.h
@@ -0,0 +1,6 @@
+#pragma once
+
+class Delaunator {
+    template<int N>
+    Delaunator(const double (&coords)[N]);
+};

src/main.cpp

diff --git a/src/main.cpp b/src/main.cpp
index b4f3518..db79405 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -4,33 +4,62 @@
 #include <fstream>
 #include <string>
 #include <exception>
+#include <vector>
+#include <initializer_list>
 
-std::string read_file(const char* filename) {
-    std::ifstream input_file(filename);
-    if(input_file.good()) {
-        std::string json_str(
-            (std::istreambuf_iterator<char>(input_file)),
-            std::istreambuf_iterator<char>()
-        );
-        return json_str;
-    } else {
-        std::printf("Error reading file %s", filename);
-        throw std::exception();
+namespace {
+    std::string read_file(const char* filename) {
+        std::ifstream input_file(filename);
+        if(input_file.good()) {
+            std::string json_str(
+                (std::istreambuf_iterator<char>(input_file)),
+                std::istreambuf_iterator<char>()
+            );
+            return json_str;
+        } else {
+            std::printf("Error reading file %s", filename);
+            throw std::exception();
+        }
+    }
+
+    struct Points {
+        std::vector<double> x_vector;
+        std::vector<double> y_vector;
+    };
+
+    const Points get_geo_json_points(const std::string& json) {
+        rapidjson::Document document;
+        if(document.Parse(json.c_str()).HasParseError()) {
+            std::fprintf(stderr, "Cannot parse JSON");
+            throw std::exception();
+        }
+        const rapidjson::Value& features = document["features"];
+        std::vector<double> x_vector;
+        std::vector<double> y_vector;
+        for(rapidjson::SizeType i = 0; i < features.Size(); i++) {
+            const rapidjson::Value& coordinates = features[i]["geometry"]["coordinates"];
+            const double x = coordinates[0].GetDouble();
+            const double y = coordinates[1].GetDouble();
+            x_vector.push_back(std::move(x));
+            y_vector.push_back(std::move(y));
+            // std::printf("coordinates %f %f \n", x, y);
+        }
+        Points points = {.x_vector = x_vector, .y_vector = y_vector};
+        return points;
     }
 }
 
+
 int main(int, char* argv[]) {
     const char* filename = argv[1];
     std::string json = read_file(filename);
-    rapidjson::Document document;
-    if(document.Parse(json.c_str()).HasParseError()) {
-        std::fprintf(stderr, "Cannot parse JSON");
-        throw std::exception();
+    const Points points = get_geo_json_points(json);
+    const int size = points.x_vector.size();
+    double coords[size * 2];
+    for(int i = 0; i < size; i++)
+    {
+        coords[i] = points.x_vector[i];
+        coords[2 * i] = points.y_vector[i];
     }
-    if(document.HasMember("features")) {
-        const rapidjson::Value& features = document["features"];
-        for(rapidjson::SizeType i = 0; i < features.Size(); i++) {
-            std::printf("feature");
-        }
-    }
+
 }