New --retract-lift-above and --retract-lift-below options. #763 #3057

1 files changed, 8 insertions, 1 deletions

diff --git a/xs/src/libslic3r/GCodeWriter.cpp b/xs/src/libslic3r/GCodeWriter.cpp
index e6bcb8df8..3ec301d70 100644
--- a/xs/src/libslic3r/GCodeWriter.cpp
+++ b/xs/src/libslic3r/GCodeWriter.cpp
@@ -495,7 +495,14 @@ GCodeWriter::unretract()
 std::string
 GCodeWriter::lift()
 {
-    double target_lift = this->config.retract_lift.get_at(0);
+    // check whether the above/below conditions are met
+    double target_lift = 0;
+    {
+        double above = this->config.retract_lift_above.get_at(0);
+        double below = this->config.retract_lift_below.get_at(0);
+        if (this->_pos.z >= above && this->_pos.z <= below && below > 0)
+            target_lift = this->config.retract_lift.get_at(0);
+    }
     if (this->_lifted == 0 && target_lift > 0) {
         this->_lifted = target_lift;
         return this->_travel_to_z(this->_pos.z + target_lift, "lift Z");