Add properties_output_size function to wrapper c

include/world_builder/wrapper_c.h

@@ -34,6 +34,19 @@ extern "C" {
 void create_world(void **ptr_ptr_world, const char *world_builder_file, const bool *has_output_dir, const char *output_dir, const unsigned long random_number_seed);
 
 
+
+/**
+ * Return the size of the output vector returned by the properties function for a given properties vector.
+ *
+ * @param properties The properties paramter from the properties function. See the documentation of that
+ * function for more info.
+ * @param n_properties number of properties
+ * @return unsigned int Return the size of the output vector returned by the properties function for a given properties vector.
+ */
+unsigned int properties_output_size(void *ptr_ptr_world,
+                                    const unsigned int properties[][3],
+                                    const unsigned int n_properties);
+
 /**
  * @brief This function returns 2D properties.
  *

source/world_builder/wrapper_c.cc

@@ -53,6 +53,21 @@ extern "C" {
     *ptr_ptr_world = reinterpret_cast<void *>(a);
   }
 
+  unsigned int properties_output_size(void *ptr_ptr_world,const unsigned int properties_[][3],
+                                      const unsigned int n_properties)
+  {
+    WorldBuilder::World *a =
+      reinterpret_cast<WorldBuilder::World *>(ptr_ptr_world);
+    std::vector<std::array<unsigned int, 3>> properties(n_properties);
+    for (size_t i = 0; i < n_properties; ++i)
+      {
+        properties[i][0] = properties_[i][0];
+        properties[i][1] = properties_[i][1];
+        properties[i][2] = properties_[i][2];
+      }
+    return a->properties_output_size(properties);
+  }
+
   void properties_2d(void *ptr_ptr_world, const double x, const double z,
                      const double depth, const unsigned int properties_[][3],
                      const unsigned int n_properties, double values[])