From 2d610f9b84df1be44682e2fd1a94f05592f39841 Mon Sep 17 00:00:00 2001
From: Enrico Turri <enricoturri@seznam.cz>
Date: Mon, 21 Oct 2019 10:12:42 +0200
Subject: [PATCH] #3082 - Workaround to fix incorrect object position after
 applying gcode line G92 into custom gcode

---
 src/libslic3r/GCode/Analyzer.cpp | 24 ++++++++++++++++++++++++
 src/libslic3r/GCode/Analyzer.hpp |  3 +++
 2 files changed, 27 insertions(+)

diff --git a/src/libslic3r/GCode/Analyzer.cpp b/src/libslic3r/GCode/Analyzer.cpp
index 78f6c6806..3f0b8735f 100644
--- a/src/libslic3r/GCode/Analyzer.cpp
+++ b/src/libslic3r/GCode/Analyzer.cpp
@@ -285,6 +285,11 @@ void GCodeAnalyzer::_process_gcode_line(GCodeReader&, const GCodeReader::GCodeLi
                         _processM108orM135(line);
                         break;
                     }
+                case 132: // Recall stored home offsets
+                    {
+                        _processM132(line);
+                        break;
+                    }
                 case 401: // Repetier: Store x, y and z position
                     {
                         _processM401(line);
@@ -504,6 +509,25 @@ void GCodeAnalyzer::_processM108orM135(const GCodeReader::GCodeLine& line)
     }
 }
 
+void GCodeAnalyzer::_processM132(const GCodeReader::GCodeLine& line)
+{
+    // This command is used by Makerbot to load the current home position from EEPROM
+    // see: https://github.com/makerbot/s3g/blob/master/doc/GCodeProtocol.md
+    // Using this command to reset the axis origin to zero helps in fixing: https://github.com/prusa3d/PrusaSlicer/issues/3082
+
+    if (line.has_x())
+        _set_axis_origin(X, 0.0f);
+
+    if (line.has_y())
+        _set_axis_origin(Y, 0.0f);
+
+    if (line.has_z())
+        _set_axis_origin(Z, 0.0f);
+
+    if (line.has_e())
+        _set_axis_origin(E, 0.0f);
+}
+
 void GCodeAnalyzer::_processM401(const GCodeReader::GCodeLine& line)
 {
     if (m_gcode_flavor != gcfRepetier)
diff --git a/src/libslic3r/GCode/Analyzer.hpp b/src/libslic3r/GCode/Analyzer.hpp
index e90175c49..df4f6f652 100644
--- a/src/libslic3r/GCode/Analyzer.hpp
+++ b/src/libslic3r/GCode/Analyzer.hpp
@@ -182,6 +182,9 @@ private:
     // Set tool (MakerWare and Sailfish flavor)
     void _processM108orM135(const GCodeReader::GCodeLine& line);
 
+    // Recall stored home offsets
+    void _processM132(const GCodeReader::GCodeLine& line);
+
     // Repetier: Store x, y and z position
     void _processM401(const GCodeReader::GCodeLine& line);