Partial revert of 1bffc2b99b

(deriving the printer technology from the merged configs).

src/PrusaSlicer.cpp

@@ -57,6 +57,12 @@
 
 using namespace Slic3r;
 
+static PrinterTechnology get_printer_technology(const DynamicConfig &config)
+{
+    const ConfigOptionEnum<PrinterTechnology> *opt = config.option<ConfigOptionEnum<PrinterTechnology>>("printer_technology");
+    return (opt == nullptr) ? ptUnknown : opt->value;
+}
+
 int CLI::run(int argc, char **argv)
 {
     // Mark the main thread for the debugger and for runtime checks.
@@ -95,7 +101,7 @@ int CLI::run(int argc, char **argv)
     m_extra_config.apply(m_config, true);
     m_extra_config.normalize_fdm();
     
-    PrinterTechnology printer_technology = Slic3r::printer_technology(m_config);
+    PrinterTechnology printer_technology = get_printer_technology(m_config);
 
     bool							start_gui			= m_actions.empty() &&
         // cutting transformations are setting an "export" action.
@@ -130,7 +136,7 @@ int CLI::run(int argc, char **argv)
             return 1;
         }
         config.normalize_fdm();
-        PrinterTechnology other_printer_technology = Slic3r::printer_technology(config);
+        PrinterTechnology other_printer_technology = get_printer_technology(config);
         if (printer_technology == ptUnknown) {
             printer_technology = other_printer_technology;
         } else if (printer_technology != other_printer_technology && other_printer_technology != ptUnknown) {
@@ -167,7 +173,7 @@ int CLI::run(int argc, char **argv)
                 // When loading an AMF or 3MF, config is imported as well, including the printer technology.
                 DynamicPrintConfig config;
                 model = Model::read_from_file(file, &config, true);
-                PrinterTechnology other_printer_technology = Slic3r::printer_technology(config);
+                PrinterTechnology other_printer_technology = get_printer_technology(config);
                 if (printer_technology == ptUnknown) {
                     printer_technology = other_printer_technology;
                 }
@@ -224,10 +230,12 @@ int CLI::run(int argc, char **argv)
         m_print_config.apply(sla_print_config, true);
     }
     
-    std::string validity = m_print_config.validate();
+    {
-    if (!validity.empty()) {
+        std::string validity = m_print_config.validate();
-        boost::nowide::cerr << "error: " << validity << std::endl;
+        if (! validity.empty()) {
-        return 1;
+            boost::nowide::cerr << "Error: The composite configation is not valid: " << validity << std::endl;
+            return 1;
+        }
     }
     
     // Loop through transform options.
@@ -645,6 +653,7 @@ bool CLI::setup(int argc, char **argv)
             set_logging_level(opt_loglevel->value);
     }
     
+    //FIXME Validating at this stage most likely does not make sense, as the config is not fully initialized yet.
     std::string validity = m_config.validate();
 
     // Initialize with defaults.
@@ -654,6 +663,7 @@ bool CLI::setup(int argc, char **argv)
 
     set_data_dir(m_config.opt_string("datadir"));
     
+    //FIXME Validating at this stage most likely does not make sense, as the config is not fully initialized yet.
     if (!validity.empty()) {
         boost::nowide::cerr << "error: " << validity << std::endl;
         return false;

src/libslic3r/PrintConfig.cpp

@@ -3299,15 +3299,20 @@ DynamicPrintConfig* DynamicPrintConfig::new_from_defaults_keys(const std::vector
 
 double min_object_distance(const ConfigBase &cfg)
 {   
+    const ConfigOptionEnum<PrinterTechnology> *opt_printer_technology = cfg.option<ConfigOptionEnum<PrinterTechnology>>("printer_technology");
+    auto printer_technology = opt_printer_technology ? opt_printer_technology->value : ptUnknown;
+
     double ret = 0.;
-    
+
-    if (printer_technology(cfg) == ptSLA) ret = 6.;
+    if (printer_technology == ptSLA)
+        ret = 6.;
     else {
         auto ecr_opt = cfg.option<ConfigOptionFloat>("extruder_clearance_radius");
         auto dd_opt  = cfg.option<ConfigOptionFloat>("duplicate_distance");
         auto co_opt  = cfg.option<ConfigOptionBool>("complete_objects");
 
-        if (!ecr_opt || !dd_opt || !co_opt) ret = 0.;
+        if (!ecr_opt || !dd_opt || !co_opt) 
+            ret = 0.;
         else {
             // min object distance is max(duplicate_distance, clearance_radius)
             ret = (co_opt->value && ecr_opt->value > dd_opt->value) ?
@@ -3318,21 +3323,6 @@ double min_object_distance(const ConfigBase &cfg)
     return ret;
 }
 
-PrinterTechnology printer_technology(const ConfigBase &cfg)
-{
-    const ConfigOptionEnum<PrinterTechnology> *opt = cfg.option<ConfigOptionEnum<PrinterTechnology>>("printer_technology");
-    
-    if (opt) return opt->value;
-    
-    const ConfigOptionBool *export_opt = cfg.option<ConfigOptionBool>("export_sla");
-    if (export_opt && export_opt->getBool()) return ptSLA;
-    
-    export_opt = cfg.option<ConfigOptionBool>("export_gcode");
-    if (export_opt && export_opt->getBool()) return ptFFF;    
-    
-    return ptUnknown;
-}
-
 void DynamicPrintConfig::normalize_fdm()
 {
     if (this->has("extruder")) {

src/libslic3r/PrintConfig.hpp

@@ -246,7 +246,7 @@ extern const PrintConfigDef print_config_def;
 
 class StaticPrintConfig;
 
-PrinterTechnology printer_technology(const ConfigBase &cfg);
+// Minimum object distance for arrangement, based on printer technology.
 double min_object_distance(const ConfigBase &cfg);
 
 // Slic3r dynamic configuration, used to override the configuration