Integrate external purge estimates (eg Blobifier) to the filament consumption UI

src/libslic3r/GCode/GCodeProcessor.cpp

@@ -98,6 +98,8 @@ const std::vector<std::string> GCodeProcessor::Reserved_Tags_compatible = {
 const std::string GCodeProcessor::Flush_Start_Tag = " FLUSH_START";
 const std::string GCodeProcessor::Flush_End_Tag = " FLUSH_END";
 
+//Orca: External device purge tag
+const std::string GCodeProcessor::External_Purge_Tag = " EXTERNAL_PURGE";
 
 const float GCodeProcessor::Wipe_Width = 0.05f;
 const float GCodeProcessor::Wipe_Height = 0.05f;
@@ -2289,6 +2291,24 @@ void GCodeProcessor::process_tags(const std::string_view comment, bool producers
         m_flushing = false;
         return;
     }
+
+    // Orca: Integrate filament consumption for purging performed to an external device and controlled via macros
+    // (eg. Happy Hare) in the filament consumption stats.
+    if (boost::starts_with(comment, GCodeProcessor::External_Purge_Tag)) {
+        std::regex numberRegex(R"(\d+\.\d+)");
+        std::smatch match;
+        std::string line(comment);
+        if (std::regex_search(line, match, numberRegex)) {
+            float filament_diameter = (static_cast<size_t>(m_extruder_id) < m_result.filament_diameters.size()) ?  m_result.filament_diameters[m_extruder_id] : m_result.filament_diameters.back();
+            float filament_radius = 0.5f * filament_diameter;
+            float area_filament_cross_section = static_cast<float>(M_PI) * sqr(filament_radius);
+
+            float dE = std::stof(match.str());
+            float volume_extruded_filament = area_filament_cross_section * dE;
+            m_used_filaments.update_flush_per_filament(m_extruder_id, volume_extruded_filament);
+        }
+        return;
+    }
 
     if (!producers_enabled || m_producer == EProducer::OrcaSlicer) {
         // height tag

src/libslic3r/GCode/GCodeProcessor.hpp

@@ -272,6 +272,7 @@ class Print;
         static const std::vector<std::string> Reserved_Tags_compatible;
         static const std::string Flush_Start_Tag;
         static const std::string Flush_End_Tag;
+        static const std::string External_Purge_Tag;
     public:
         enum class ETags : unsigned char
         {