Make acceleration/jerk_enabled control bead modes as well

This fits more with the parenting structure

Author: shirleydu

plugins/MakerbotWriter/MakerbotWriter.py

@@ -258,37 +258,42 @@ def _getMeta(self, root_nodes: List[SceneNode]) -> Tuple[Dict[str, any], str]:
             accel_overrides = meta["accel_overrides"] = {}
             bead_mode_overrides = accel_overrides["bead_mode"] = {}
 
-            if global_stack.getProperty('acceleration_enabled', 'value'):
+            accel_enabled = global_stack.getProperty('acceleration_enabled', 'value')
+
+            if accel_enabled:
                 global_accel_setting = global_stack.getProperty('acceleration_print', 'value')
                 accel_overrides["rate_mm_per_s_sq"] = {
                     "x": global_accel_setting,
                     "y": global_accel_setting
                 }
-            if global_stack.getProperty('acceleration_travel_enabled', 'value'):
-                travel_accel_setting = global_stack.getProperty('acceleration_travel', 'value')
-                bead_mode_overrides['Travel Move'] = {
-                    "rate_mm_per_s_sq": {
-                        "x": travel_accel_setting,
-                        "y": travel_accel_setting
+
+                if global_stack.getProperty('acceleration_travel_enabled', 'value'):
+                    travel_accel_setting = global_stack.getProperty('acceleration_travel', 'value')
+                    bead_mode_overrides['Travel Move'] = {
+                        "rate_mm_per_s_sq": {
+                            "x": travel_accel_setting,
+                            "y": travel_accel_setting
+                        }
                     }
-                }
 
-            if global_stack.getProperty('jerk_enabled', 'value'):
+            jerk_enabled = global_stack.getProperty('jerk_enabled', 'value')
+            if jerk_enabled:
                 global_jerk_setting = global_stack.getProperty('jerk_print', 'value')
                 accel_overrides["max_speed_change_mm_per_s"] = {
                     "x": global_jerk_setting,
                     "y": global_jerk_setting
                 }
-            if global_stack.getProperty('jerk_travel_enabled', 'value'):
-                travel_jerk_setting = global_stack.getProperty('jerk_travel', 'value')
-                if 'Travel Move' not in bead_mode_overrides:
-                    bead_mode_overrides['Travel Move' ] = {}
-                bead_mode_overrides['Travel Move'].update({
-                    "max_speed_change_mm_per_s": {
-                        "x": travel_jerk_setting,
-                        "y": travel_jerk_setting
-                    }
-                })
+
+                if global_stack.getProperty('jerk_travel_enabled', 'value'):
+                    travel_jerk_setting = global_stack.getProperty('jerk_travel', 'value')
+                    if 'Travel Move' not in bead_mode_overrides:
+                        bead_mode_overrides['Travel Move' ] = {}
+                    bead_mode_overrides['Travel Move'].update({
+                        "max_speed_change_mm_per_s": {
+                            "x": travel_jerk_setting,
+                            "y": travel_jerk_setting
+                        }
+                    })
 
 
             # Get bead mode settings per extruder
@@ -304,20 +309,18 @@ def _getMeta(self, root_nodes: List[SceneNode]) -> Tuple[Dict[str, any], str]:
             }
             for idx, extruder in enumerate(extruders):
                 for bead_mode_setting, bead_mode_tag in available_bead_modes.items():
-                    if bead_mode_tag == "":
-                        continue
                     ext_specific_tag = "%s_%s" % (bead_mode_tag, idx)
-                    accel_val = extruder.getProperty('acceleration_%s' % bead_mode_setting, 'value')
-                    jerk_val = extruder.getProperty('jerk_%s' % bead_mode_setting, 'value')
-                    if accel_val != 0 or jerk_val != 0:
+                    if accel_enabled or jerk_enabled:
                         bead_mode_overrides[ext_specific_tag] = {}
 
-                    if accel_val != 0:
+                    if accel_enabled:
+                        accel_val = extruder.getProperty('acceleration_%s' % bead_mode_setting, 'value')
                         bead_mode_overrides[ext_specific_tag]["rate_mm_per_s_sq"] = {
                             "x": accel_val,
                             "y": accel_val
                         }
-                    if jerk_val != 0:
+                    if jerk_enabled:
+                        jerk_val = extruder.getProperty('jerk_%s' % bead_mode_setting, 'value')
                         bead_mode_overrides[ext_specific_tag][ "max_speed_change_mm_per_s"] = {
                             "x": jerk_val,
                             "y": jerk_val