use binary command structure for servoanim export

addon/ops/arduino_export.py

@@ -44,7 +44,7 @@ class ArduinoExport(Operator, BaseExport, ExportHelper):
         )
     )
 
-    def export(self, positions, context):
+    def export(self, positions, filepath, context):
         variable_type = 'int' if self.precision == 0 else 'float'
         fps, frames, seconds = self.get_time_meta(context.scene)
         filename = self.get_blend_filename()
@@ -93,4 +93,5 @@ def export(self, positions, context):
         if self.namespace:
             content += f"\n}} // namespace {context.scene.name}\n"
 
-        return content
+        with open(filepath, 'w', encoding='utf-8') as file:
+            file.write(content)

addon/ops/base_export.py

@@ -6,6 +6,9 @@
 
 
 class BaseExport:
+    COMMAND_START = 0x3C
+    COMMAND_END = 0x3E
+
     precision: bpy.props.IntProperty(
         name="Precision",
         description="The number of decimal digits to round to",
@@ -33,7 +36,7 @@ def execute(self, context):
 
         try:
             positions = calculate_positions(context, self.precision)
-            content = self.export(positions, context)
+            self.export(positions, self.filepath, context)
         except RuntimeError as error:
             self.report({'ERROR'}, str(error))
 
@@ -44,16 +47,21 @@ def execute(self, context):
             if original_live_mode is True:
                 bpy.ops.servo_animation.start_live_mode('INVOKE_DEFAULT')
 
-        with open(self.filepath, 'w', encoding='utf-8') as file:
-            file.write(content)
-
         end = time.time()
         duration = round(end - start)
         self.report(
             {'INFO'}, f"Animation servo positions exported after {duration} seconds")
 
         return {'FINISHED'}
 
+    @classmethod
+    def get_command(cls, servo_id, position):
+        command = [cls.COMMAND_START, servo_id]
+        command += position.to_bytes(2, 'big')
+        command += [cls.COMMAND_END]
+
+        return command
+
     @staticmethod
     def get_time_meta(scene):
         fps = scene.render.fps

addon/ops/json_export.py

@@ -20,7 +20,7 @@ class JsonExport(Operator, BaseExport, ExportHelper):
         maxlen=255
     )
 
-    def export(self, positions, context):
+    def export(self, positions, filepath, context):
         fps, frames, seconds = self.get_time_meta(context.scene)
         filename = self.get_blend_filename()
 
@@ -45,4 +45,7 @@ def export(self, positions, context):
             "servos": servos
         }
 
-        return json.dumps(data, indent=4)
+        content = json.dumps(data, indent=4)
+
+        with open(filepath, 'w', encoding='utf-8') as file:
+            file.write(content)

addon/ops/servoanim_export.py

@@ -18,19 +18,19 @@ class ServoanimExport(Operator, BaseExport, ExportHelper):
         maxlen=255
     )
 
-    def export(self, positions, context):
-        fps, frames, seconds = self.get_time_meta(context.scene)
-        positions_keys = list(positions.keys())
-        ids = ",".join(str(x) for x in positions_keys)
+    LINE_BREAK = 10
 
-        content = f"fps:{fps} frames:{frames} seconds:{seconds} ids:{ids}\n\n"
+    def export(self, positions, filepath, context):
+        _fps, frames, _seconds = self.get_time_meta(context.scene)
+        content = []
 
         for frame in range(frames):
             for servo_id in range(255):
                 if servo_id not in positions:
                     continue
-                pos = positions[servo_id][frame]
-                content += str(pos) + " "
-            content = content[:-1] + "\n"
+                position = positions[servo_id][frame]
+                content += self.get_command(servo_id, position)
+            content.append(self.LINE_BREAK)
 
-        return content
+        with open(filepath, 'wb') as file:
+            file.write(bytes(content))