diff --git a/konabot/plugins/marchtoy/__init__.py b/konabot/plugins/marchtoy/__init__.py
index 68acf25..38026af 100644
--- a/konabot/plugins/marchtoy/__init__.py
+++ b/konabot/plugins/marchtoy/__init__.py
@@ -17,4 +17,4 @@ async def _(args: Message = CommandArg()):
             buffer.seek(0)
             await cmd_marchtoy.send(await UniMessage().image(raw=buffer).export())
         except Exception as e:
-            await cmd_marchtoy.send(await UniMessage.text(f"发生了错误: {e}").export())
\ No newline at end of file
+            await cmd_marchtoy.send(await UniMessage.text(f"cannot render: {e}").export())
\ No newline at end of file
diff --git a/konabot/plugins/marchtoy/command.py b/konabot/plugins/marchtoy/command.py
index 005e54b..eb6ac6a 100644
--- a/konabot/plugins/marchtoy/command.py
+++ b/konabot/plugins/marchtoy/command.py
@@ -13,15 +13,9 @@ example:
     march cube.pos(0, 0, 0).color(red) cam(1.0).pos(1, 1, 1).lookat(0, 0, 0)
 """
 
-import pathlib
 from dataclasses import dataclass
 import re
-import numpy as np
 from dataclasses import dataclass
-from typing import Optional
-
-from konabot.plugins.marchtoy.obj import Object, Camera, OBJECT_ENTRIES
-from konabot.plugins.marchtoy.op import OPERATION_ENTRIES
 @dataclass
 class Command:
     id: str
@@ -29,7 +23,7 @@ class Command:
 
 
 class CommandChainParser:
-    CHAIN_PATTERN = r"^[a-zA-Z]+(\([^(]*\))?(\.[a-zA-Z]+(\([^(]*\))?)*"
+    CHAIN_PATTERN = r"^(([a-zA-Z0-9.]+(?:\(([^()]*|(?1)+)(\s*\,\s*(?1))*\))?)(\.(?1))*)"
 
     def __init__(self, _command_chain: str) -> None:
         self.command_chain = _command_chain
@@ -46,7 +40,7 @@ class CommandChainParser:
 
 
 class CommandParser:
-    CMD_PATTERN = r"^[a-zA-Z]+(\([^(]*\))?"
+    CMD_PATTERN = r"^(([a-zA-Z0-9.]+(?:\(([^()]*|(?1)+)(\s*\,\s*(?1))*\))?))"
     ID_PATTERN = r"^[a-zA-Z]+(?=\(|\.|$)"
 
     def __init__(self, _command: str) -> None:
@@ -61,88 +55,8 @@ class CommandParser:
             if cmd_id_qry := re.match(CommandParser.ID_PATTERN, cmd):
                 cmd_id = cmd_id_qry[0]
                 self.command = self.command[len(cmd) + 1 :]
-                cmd_args = cmd[len(cmd_id) + 1 : -1].replace(" ", "").split(",")
-                while "" in cmd_args:
-                    cmd_args.remove("")
+                cmd_args = cmd[len(cmd_id) + 1 : -1]#.replace(" ", "").split(",")
+                # while "" in cmd_args:
+                    # cmd_args.remove("")
                 return Command(cmd_id, cmd_args)
         raise StopIteration
-
-class Scene:
-    def __init__(self, _instruction: str) -> None:
-        self.canvas_objs: list[tuple[Object, str]] = []
-        self.camera: Camera = Camera()
-        for raw_cmd in CommandChainParser(_instruction):
-            cmd_queue = CommandParser(raw_cmd)
-            cmd_obj = next(cmd_queue)
-            obj_id, obj_args = cmd_obj.id, cmd_obj.args
-            obj_instance: Optional[Object] = None
-            if obj_id in OBJECT_ENTRIES:
-                obj_cls = OBJECT_ENTRIES[obj_id]
-                if not issubclass(obj_cls, Object):
-                    raise Exception(f"{obj_id} is not a subclass of Object.")
-                obj_instance = obj_cls()
-                try:
-                    if len(obj_args) != 0:
-                        obj_instance.parse_args(obj_args)
-                except Exception as e:
-                    raise Exception(
-                        f"object {obj_id} failed to parse args passed in: {obj_args}"
-                    ) from e
-            else:
-                raise Exception(f"{obj_id} is not a valid object type.")
-
-            if obj_instance != None:
-                for cmd in cmd_queue:
-                    op_id, op_args = cmd.id, cmd.args
-                    if op_id in OPERATION_ENTRIES:
-                        op_func = OPERATION_ENTRIES[op_id]
-                        if not callable(op_func):
-                            raise Exception(f"{op_id} is not a valid operation.")
-                        op_func(obj_instance, op_args)
-                    else:
-                        raise Exception(f"{op_id} is not a valid operation.")
-
-                try:
-                    sdf_block = obj_instance.sdf_block_glsl()
-                    self.canvas_objs.append((obj_instance, sdf_block))
-                except:
-                    if type(obj_instance) == Camera:
-                        self.camera = obj_instance
-
-    def __str__(self) -> str:
-        return ", ".join([str(type(obj)) for obj in self.canvas_objs])
-
-    def compile(self, fs_src: str = "frag.glsl") -> str:
-        PATH = pathlib.Path(__file__).parent / "shaders" / fs_src
-        with PATH.open(encoding="utf-8") as f:
-            content = f.read()
-        sdf_block: str = ""
-        color_block: str = ""
-
-        index = 0
-        for canvas_item in self.canvas_objs:
-            obj, sdf_expr = canvas_item
-            sdf_block += f"float sd{index} = {sdf_expr};"
-            sdf_block += f"if(sd{index} < qry.value)"
-            sdf_block += "{" + f"qry.value = sd{index}; qry.obj_id = {index}; " + "}\n"
-            color = obj.texture.color
-            color_block += (
-                f"if(obj_id == {index}) return vec4("
-                f"{color[0]}, {color[1]}, {color[2]}, {color[3]});\n"
-            )
-            index += 1
-
-        content = content.replace("<SDF_BLOCK>", sdf_block)
-        content = content.replace("<COLOR_BLOCK>", color_block)
-
-        cam_pos = self.camera.transform.t[0:3, 3]
-        cam_focus = self.camera.focus
-        cam_dir = self.camera.transform.t @ np.array((0.0, 0.0, -1.0, 0.0))
-        content = content.replace(
-            "<CAM_POS>", f"{cam_pos[0]}, {cam_pos[1]}, {cam_pos[2]}"
-        )
-        content = content.replace("<CAM_FOCUS>", str(cam_focus))
-        content = content.replace(
-            "<CAM_DIR>", f"{cam_dir[0]}, {cam_dir[1]}, {cam_dir[2]}"
-        )
-        return content
diff --git a/konabot/plugins/marchtoy/gl_render.py b/konabot/plugins/marchtoy/gl_render.py
index 33553b4..7a22b92 100644
--- a/konabot/plugins/marchtoy/gl_render.py
+++ b/konabot/plugins/marchtoy/gl_render.py
@@ -5,7 +5,7 @@ import pathlib
 import moderngl
 import numpy as np
 from PIL import Image
-from konabot.plugins.marchtoy.command import Scene
+from konabot.plugins.marchtoy.scene import Scene
 
 async def render(command: str, res: tuple[int, int]):
     fs = Scene(command).compile()
diff --git a/konabot/plugins/marchtoy/obj.py b/konabot/plugins/marchtoy/obj.py
index 366d383..364c1dd 100644
--- a/konabot/plugins/marchtoy/obj.py
+++ b/konabot/plugins/marchtoy/obj.py
@@ -1,6 +1,8 @@
 import numpy as np
 from konabot.plugins.marchtoy.texture import Texture
 from konabot.plugins.marchtoy.utilities import ArgParser, Formatter
+from nonebot import logger
+from typing import Optional
 
 OBJECT_ENTRIES = {}
 
@@ -80,7 +82,7 @@ class Object:
         self.transform: Transform = Transform()
         self.texture: Texture = Texture()
 
-    def parse_args(self, args: list[str]):
+    def parse_args(self, args: str):
         raise NotImplementedError
 
     def get_transformed(self, p: np.ndarray) -> np.ndarray:
@@ -94,9 +96,6 @@ class Object:
     def sdf_block_glsl(self) -> str:
         raise NotImplementedError
 
-    def sdf(self, _p: np.ndarray) -> float:
-        return NotImplementedError
-
 
 @make_obj("cube", "box")
 class Cube(Object):
@@ -104,34 +103,24 @@ class Cube(Object):
         super().__init__()
         self.size = _size
 
-    def parse_args(self, args: list[str]):
-        self.size = ArgParser.as_vec3(args)
+    def parse_args(self, args: str):
+        self.size = ArgParser.as_vec3(ArgParser.to_params(args))
 
     def sdf_block_glsl(self) -> str:
         return f"sdCube({self.transform.p_expr()}, vec3({self.size[0]}, {self.size[1]}, {self.size[2]}))"
 
-    def sdf(self, _p):
-        p = self.get_transformed(_p)
-        p = np.abs(p) - self.size
-        return np.linalg.norm(np.maximum(p, 0.0)) + np.minimum(np.max(p), 0.0)
-
-
 @make_obj("sphere", "ball")
 class Sphere(Object):
     def __init__(self, _radius: float = 1.0) -> None:
         super().__init__()
         self.radius = _radius
 
-    def parse_args(self, args: list[str]):
-        self.radius = ArgParser.as_float(args)
+    def parse_args(self, args: str):
+        self.radius = ArgParser.as_float(ArgParser.to_params(args))
 
     def sdf_block_glsl(self) -> str:
         return f"sdSphere({self.transform.p_expr()}, {self.radius})"
 
-    def sdf(self, _p):
-        p = self.get_transformed(_p)
-        return np.linalg.norm(p) - self.radius
-
 
 @make_obj("cylinder", "cyl")
 class Cylinder(Object):
@@ -140,8 +129,8 @@ class Cylinder(Object):
         self.radius = _radius
         self.height = _height
 
-    def parse_args(self, args: list[str]):
-        param = ArgParser.as_vec2(args)
+    def parse_args(self, args: str):
+        param = ArgParser.as_vec2(ArgParser.to_params(args))
         self.radius = param[0]
         self.height = param[1]
 
@@ -150,16 +139,6 @@ class Cylinder(Object):
             f"sdCappedCylinder({self.transform.p_expr()}, {self.radius}, {self.height})"
         )
 
-    def sdf(self, _p):
-        p = self.get_transformed(_p)
-        d = np.abs(np.array([np.linalg.norm(p[[0, 2]]), p[1]])) - np.array(
-            [self.radius, self.height]
-        )
-        return np.minimum(np.maximum(d[0], d[1]), 0.0) + np.linalg.norm(
-            np.maximum(d, 0.0)
-        )
-
-
 @make_obj("torus")
 class Torus(Object):
     def __init__(self, _r1: float = 1.0, _r2: float = 0.4) -> None:
@@ -167,19 +146,14 @@ class Torus(Object):
         self.r1 = _r1
         self.r2 = _r2
 
-    def parse_args(self, args: list[str]):
-        param = ArgParser.as_vec2(args)
+    def parse_args(self, args: str):
+        param = ArgParser.as_vec2(ArgParser.to_params(args))
         self.r1 = param[0]
         self.r2 = param[1]
 
     def sdf_block_glsl(self) -> str:
         return f"sdTorus({self.transform.p_expr()}, vec2({self.r1}, {self.r2}))"
 
-    def sdf(self, _p):
-        p = self.get_transformed(_p)
-        q = np.array([np.linalg.norm(p[[0, 2]]) - self.r1, p[1]])
-        return np.linalg.norm(q) - self.r2
-
 
 @make_obj("capsule", "pill")
 class Capsule(Object):
@@ -188,19 +162,32 @@ class Capsule(Object):
         self.h = _h
         self.r = _r
 
-    def parse_args(self, args: list[str]):
-        param = ArgParser.as_vec2(args)
+    def parse_args(self, args: str):
+        param = ArgParser.as_vec2(ArgParser.to_params(args))
         self.h = param[0]
         self.r = param[1]
 
     def sdf_block_glsl(self) -> str:
         return f"sdVerticalCapsule({self.transform.p_expr()}, {self.h}, {self.r})"
 
-    def sdf(self, _p):
-        p = self.get_transformed(_p)
-        p[1] -= np.clip(p[1], 0.0, self.h)
-        return np.linalg.norm(p) - self.r
+@make_obj("smoothed", "mix")
+class Smoothed(Object):
+    def __init__(self, _a = None, _b = None, _k: float = 0.25):
+        super().__init__()
+        self.a_index: int = _a
+        self.b: Optional[Object] = _b
+        self.k: float = _k
+    
+    def parse_args(self, args: str):
+        # from konabot.plugins.marchtoy.command import CommandChainParser
+        try:
+            raise Exception
+        except Exception as e:
+            raise Exception(f"cannot build smoothed object over {args}: {e}")
 
+            
+    def sdf_block_glsl(self):
+        return f"smin({self.a.sdf_block_glsl()}, {self.b.sdf_block_glsl()}, {self.k})"
 
 @make_obj("camera", "cam")
 class Camera(Object):
@@ -209,5 +196,6 @@ class Camera(Object):
         self.focus = _focus
         self.transform.translate(5.0, 5.0, 5.0).lookat(0.0, 0.0, 0.0)
 
-    def parse_args(self, args: list[str]):
-        self.focus = ArgParser.as_float(args)
+    def parse_args(self, args: str):
+        self.focus = ArgParser.as_float(ArgParser.to_params(args))
+
diff --git a/konabot/plugins/marchtoy/scene.py b/konabot/plugins/marchtoy/scene.py
new file mode 100644
index 0000000..289d88c
--- /dev/null
+++ b/konabot/plugins/marchtoy/scene.py
@@ -0,0 +1,88 @@
+from typing import Optional
+import pathlib
+import numpy as np
+from nonebot import logger
+
+class Scene:
+    def __init__(self, _instruction: str) -> None:
+        from konabot.plugins.marchtoy.command import CommandChainParser, CommandParser
+        from konabot.plugins.marchtoy.op import OPERATION_ENTRIES
+        from konabot.plugins.marchtoy.obj import Object, Camera, OBJECT_ENTRIES
+        logger.info(f"building scene: {_instruction}")
+        self.canvas_objs: list[tuple[Object, str]] = []
+        self.camera: Camera = Camera()
+        for raw_cmd in CommandChainParser(_instruction):
+            cmd_queue = CommandParser(raw_cmd)
+            cmd_obj = next(cmd_queue)
+            obj_id, obj_args = cmd_obj.id, cmd_obj.args
+            obj_instance: Optional[Object] = None
+            if obj_id in OBJECT_ENTRIES:
+                obj_cls = OBJECT_ENTRIES[obj_id]
+                if not issubclass(obj_cls, Object):
+                    raise Exception(f"{obj_id} is not a subclass of Object.")
+                obj_instance = obj_cls()
+                try:
+                    if len(obj_args) != 0:
+                        obj_instance.parse_args(obj_args)
+                except Exception as e:
+                    raise Exception(
+                        f"object {obj_id} failed to parse args passed in: {obj_args}.\n{e}"
+                    ) from e
+            else:
+                raise Exception(f"{obj_id} is not a valid object type.")
+
+            if obj_instance != None:
+                for cmd in cmd_queue:
+                    op_id, op_args = cmd.id, cmd.args
+                    if op_id in OPERATION_ENTRIES:
+                        op_func = OPERATION_ENTRIES[op_id]
+                        if not callable(op_func):
+                            raise Exception(f"{op_id} is not a valid operation.")
+                        op_func(obj_instance, op_args)
+                    else:
+                        raise Exception(f"{op_id} is not a valid operation.")
+
+                try:
+                    sdf_block = obj_instance.sdf_block_glsl()
+                    self.canvas_objs.append((obj_instance, sdf_block))
+                except:
+                    if type(obj_instance) == Camera:
+                        self.camera = obj_instance
+
+    def __str__(self) -> str:
+        return ", ".join([str(type(obj)) for obj in self.canvas_objs])
+
+    def compile(self, fs_src: str = "frag.glsl") -> str:
+        PATH = pathlib.Path(__file__).parent / "shaders" / fs_src
+        with PATH.open(encoding="utf-8") as f:
+            content = f.read()
+        sdf_block: str = ""
+        color_block: str = ""
+
+        index = 0
+        for canvas_item in self.canvas_objs:
+            obj, sdf_expr = canvas_item
+            sdf_block += f"float sd{index} = {sdf_expr};"
+            sdf_block += f"if(sd{index} < qry.value)"
+            sdf_block += "{" + f"qry.value = sd{index}; qry.obj_id = {index}; " + "}\n"
+            color = obj.texture.color
+            color_block += (
+                f"if(obj_id == {index}) return vec4("
+                f"{color[0]}, {color[1]}, {color[2]}, {color[3]});\n"
+            )
+            index += 1
+
+        content = content.replace("<SDF_BLOCK>", sdf_block)
+        content = content.replace("<COLOR_BLOCK>", color_block)
+
+        cam_pos = self.camera.transform.t[0:3, 3]
+        cam_focus = self.camera.focus
+        cam_dir = self.camera.transform.t @ np.array((0.0, 0.0, -1.0, 0.0))
+        content = content.replace(
+            "<CAM_POS>", f"{cam_pos[0]}, {cam_pos[1]}, {cam_pos[2]}"
+        )
+        content = content.replace("<CAM_FOCUS>", str(cam_focus))
+        content = content.replace(
+            "<CAM_DIR>", f"{cam_dir[0]}, {cam_dir[1]}, {cam_dir[2]}"
+        )
+        return content
diff --git a/konabot/plugins/marchtoy/shaders/frag.glsl b/konabot/plugins/marchtoy/shaders/frag.glsl
index a7b7fab..8cc4068 100644
--- a/konabot/plugins/marchtoy/shaders/frag.glsl
+++ b/konabot/plugins/marchtoy/shaders/frag.glsl
@@ -33,7 +33,12 @@ float sdTorus( vec3 p, vec2 t )
     vec2 q = vec2(length(p.xz)-t.x,p.y);
     return length(q)-t.y;
 }
-
+float smin( float a, float b, float k )
+{
+    k *= 1.0;
+    float r = exp2(-a/k) + exp2(-b/k);
+    return -k*log2(r);
+}
 sdQuery sd(vec3 p) {
     sdQuery qry;
     qry.value = 100000000.0;
diff --git a/konabot/plugins/marchtoy/utilities.py b/konabot/plugins/marchtoy/utilities.py
index 34d18f7..dcadc52 100644
--- a/konabot/plugins/marchtoy/utilities.py
+++ b/konabot/plugins/marchtoy/utilities.py
@@ -26,6 +26,17 @@ class Formatter:
 TODO: 除零出现 nan 情况的单独处理
 """
 class ArgParser:
+    @staticmethod
+    def to_params(args: str, delim: str = ',') -> list[str]:
+        _params = args.replace(" ", "").split(delim)
+        params: list[str] = []
+        # while 还是太过于令人生畏了
+        for param in _params:
+            if param == "":
+                continue
+                params.append(param)
+        return paramss
+        
     @staticmethod
     def as_float(args: list[str], default: float = 0.0) -> float:
         try: