Information from DoubleSlider is saved to Model

GCode creating can work with that values.

src/libslic3r/GCode.cpp

@@ -870,8 +870,11 @@ void GCode::_do_export(Print &print, FILE *file)
     this->apply_print_config(print.config());
     this->set_extruders(print.extruders());
     
-    // Initialize colorprint.
+    //  #ys_FIXME_COLOR // Initialize colorprint.
     m_colorprint_heights = cast<float>(print.config().colorprint_heights.values);
+    // Initialize custom gcode
+    Model* model = print.get_object(0)->model_object()->get_model();
+    m_custom_g_code_heights = model->custom_gcode_per_height;
 
     // Initialize autospeed.
     {
@@ -1676,8 +1679,15 @@ void GCode::process_layer(
     // In case there are more toolchange requests that weren't done yet and should happen simultaneously, erase them all.
     // (Layers can be close to each other, model could have been resliced with bigger layer height, ...).
     bool colorprint_change = false;
-    while (!m_colorprint_heights.empty() && m_colorprint_heights.front()-EPSILON < layer.print_z) {
-        m_colorprint_heights.erase(m_colorprint_heights.begin());
+    //  #ys_FIXME_COLOR
+    // while (!m_colorprint_heights.empty() && m_colorprint_heights.front()-EPSILON < layer.print_z) {
+    //     m_colorprint_heights.erase(m_colorprint_heights.begin());
+    //     colorprint_change = true;
+    // } 
+    std::string custom_code = "";
+    while (!m_custom_g_code_heights.empty() && m_custom_g_code_heights.front().height-EPSILON < layer.print_z) {
+        custom_code = m_custom_g_code_heights.front().gcode;
+        m_custom_g_code_heights.erase(m_custom_g_code_heights.begin());
         colorprint_change = true;
     }
 
@@ -1688,7 +1698,9 @@ void GCode::process_layer(
         gcode += "; " + GCodeAnalyzer::Color_Change_Tag + "\n";
         // add tag for time estimator
         gcode += "; " + GCodeTimeEstimator::Color_Change_Tag + "\n";
-        gcode += "M600\n";
+        //  #ys_FIXME_COLOR
+        // gcode += "M600\n";
+        gcode += custom_code + "\n";
     }
 
 

src/libslic3r/GCode.hpp

@@ -353,6 +353,8 @@ protected:
     // Layer heights for colorprint - updated before the export and erased during the process
     // so no toolchange occurs twice.
     std::vector<float> m_colorprint_heights;
+    // extensions for colorprint - now it's not a just color_print, there can be some custom gcode
+    std::vector<Model::CustomGCode> m_custom_g_code_heights;
 
     // Time estimators
     GCodeTimeEstimator m_normal_time_estimator;

src/libslic3r/Model.hpp

@@ -745,6 +745,32 @@ public:
     ModelObjectPtrs     objects;
     // Wipe tower object.
     ModelWipeTower	    wipe_tower;
+
+    // Extensions for 
+    struct CustomGCode
+    {
+        CustomGCode(double height, const std::string& code, int extruder) :
+            height(height), gcode(code), extruder(extruder) {}
+
+        bool operator<(const CustomGCode& other) const { return other.height > this->height; }
+        bool operator==(const CustomGCode& other) const
+        {
+            return (other.height    == this->height)     && 
+                   (other.gcode     == this->gcode)      && 
+                   (other.extruder  == this->extruder   );
+        }
+        bool operator!=(const CustomGCode& other) const
+        {
+            return (other.height    != this->height)     || 
+                   (other.gcode     != this->gcode)      || 
+                   (other.extruder  != this->extruder   );
+        }
+        
+        double      height;
+        std::string gcode;
+        int         extruder;
+    };
+    std::vector<CustomGCode> custom_gcode_per_height;
     
     // Default constructor assigns a new ID to the model.
     Model() { assert(this->id().valid()); }

src/libslic3r/Print.cpp

@@ -749,6 +749,11 @@ Print::ApplyStatus Print::apply(const Model &model, DynamicPrintConfig new_full_
                     delete model_object;
             }
         }
+        if (model.custom_gcode_per_height != m_model.custom_gcode_per_height)
+        {
+            update_apply_status(this->invalidate_step(psGCodeExport));
+            m_model.custom_gcode_per_height = model.custom_gcode_per_height;
+        }
     }
 
     // 2) Map print objects including their transformation matrices.