manual fix

konabot/docs/user/march.txt

@@ -1,4 +1,40 @@
 # 指令介绍
 简易 Raymarch 小玩具
-用法：march <scene>
-例：march sphere(1) cam(4).pos(-5).lookat(0) 
+用法：march `[scene]`
+例：march torus(1.0, 0.2).color(1.0, 0.2, 0.2) torus(1.0, 0.2).rot(90, 0, 0).color(0.2, 0.2, 1.0) camera(4.0).pos(4, 0, 0).lookat(0)
+
+# 主要语法
+`[scene]` ::= `[scene]` "." `[op]` |`[obj]`
+
+`[obj]`   ::= `[obj_ty]` | `[obj_ty]` "(" [args] ")"
+
+`[op]`    ::= `[op_ty]` | `[op_ty]` "(" `[args]` ")"
+
+`[args]`  ::= `[args]` "," `[arg]` | `[arg]`
+
+其中 `obj_ty`、`op_ty` 分别为物体类型（如 `cube`、`sphere`、`torus` 等）与变换类型（如 `pos`、`rot`）。
+
+# 支持的物体
+目前支持的物体有（不包含 alias）：
+`cube`：可选参数长宽高
+`sphere`：可选参数半径
+`torus`：可选参数半径与粗细
+`cylinder`：可选参数半径与高度
+`capsule`：可选参数高度与半径
+
+特殊物体：
+`mix`：混合两个物体
+`bool`：两个物体相交
+`minus`：两个物体相减
+`camera`：相机，可选参数焦距
+
+# 支持的变换
+目前支持的变换有
+`pos`：位移
+`rot`：旋转（欧拉角 xyz）
+`color`：基础色
+`lookat`：朝向
+`rounded`：圆角
+
+# 特殊说明
+`[op_ty]` 不包含 scale。非正交的变换会破坏 SDF 的性质。

konabot/plugins/marchtoy/__init__.py

@@ -2,14 +2,21 @@ from nonebot import on_command
 from nonebot.adapters import Message
 from nonebot_plugin_alconna import UniMessage
 from nonebot.params import CommandArg
-import render 
+
+import konabot.plugins.marchtoy.gl_render as render 
+# import konabot.plugins.marchtoy.cpu_render as render 
 import io
-cmd_marchtoy = on_command("march", priority=10, block=True)
+cmd_marchtoy = on_command("march")
 @cmd_marchtoy.handle()
 async def _(args: Message = CommandArg()):
     if cmd := args.extract_plain_text():
-        img = await render.render(cmd, 256, 256)     
-        buffer = io.BytesIO()
-        img.save(buffer, format="PNG")
-        buffer.seek(0)
-        await cmd_marchtoy.send(await UniMessage().image(raw=buffer).export())
+        try:
+            img = await render.render(cmd, (512, 512))     
+            buffer = io.BytesIO()
+            # img.show()
+            # img.save("/mnt/d/output.png", format="GIF")
+            img.save(buffer, format="PNG")
+            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"cannot render: {e}").export())

konabot/plugins/marchtoy/command.py

@@ -13,14 +13,10 @@ 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
+import regex as re
 from dataclasses import dataclass
-from konabot.plugins.marchtoy.obj import Object, Camera, OBJECT_ENTRIES
-from konabot.plugins.marchtoy.op import OPERATION_ENTRIES
-from typing import Optional
+
 
 @dataclass
 class Command:
@@ -29,7 +25,7 @@ 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
@@ -46,8 +42,10 @@ class CommandChainParser:
 
 
 class CommandParser:
-    CMD_PATTERN = r"^[a-zA-Z]+(\([^(]*\))?"
+    CMD_PATTERN = r"^[a-zA-Z]+(?:\(([0-9.\-+]+|(([a-zA-Z0-9]+(?:\(([^()]*|(?1)+)(\s*\,\s*(?1))*\))?)(\.(?1))*))(\s*\,\s*(?1))*\))?"
     ID_PATTERN = r"^[a-zA-Z]+(?=\(|\.|$)"
+    ARG_PATTERN = CommandChainParser.CHAIN_PATTERN
+    TRIM_PATTERN = r"^\s*\,\s*"
 
     def __init__(self, _command: str) -> None:
         self.command = _command
@@ -59,91 +57,17 @@ class CommandParser:
         if query := re.match(CommandParser.CMD_PATTERN, self.command):
             cmd = query[0]
             if cmd_id_qry := re.match(CommandParser.ID_PATTERN, cmd):
-                cmd_id = cmd_id_qry[0]
+                id = cmd_id_qry[0]
+                cmd_args = cmd[len(id) + 1 : -1]  # .replace(" ", "").split(",")
+                args: list[str] = []
                 self.command = self.command[len(cmd) + 1 :]
-                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()
-                    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) -> str:
-        PATH = pathlib.Path(__file__).parent / "shaders" / "raymarch.sksl"
-        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 float4("
-                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
+                while cmd_arg_qry := re.match(CommandParser.ARG_PATTERN, cmd_args):
+                    arg = cmd_arg_qry[0]
+                    args.append(arg)
+                    cmd_args = cmd_args[len(arg) :]
+                    if trim_qry := re.match(CommandParser.TRIM_PATTERN, cmd_args):
+                        cmd_args = cmd_args[len(trim_qry[0]) :]
+                # while "" in cmd_args:
+                # cmd_args.remove("")
+                return Command(id, args)
+        raise StopIteration

konabot/plugins/marchtoy/gl_render.py

@@ -0,0 +1,44 @@
+"""
+headless moderngl
+"""
+import pathlib
+import moderngl
+import numpy as np
+from PIL import Image
+from konabot.plugins.marchtoy.scene import Scene
+from nonebot import logger
+
+PATH = pathlib.Path(__file__).parent / "shaders"
+with (PATH / "vert.glsl").open(encoding='utf-8') as f:
+    VS_SRC = f.read()
+
+async def render(command: str, res: tuple[int, int]):
+    fs = Scene(command).compile()
+    try:
+        ctx = moderngl.create_context(standalone=True)
+    except:
+        ctx = moderngl.create_context(standalone=True, backend="egl")
+    ctx.gc_mode = "auto"
+    try:
+        program = ctx.program(
+            vertex_shader=VS_SRC,
+            fragment_shader=fs
+        )
+    except Exception as e:
+        raise Exception(f"cannot compile glsl: {e}") from e
+    try:
+        uniform = program["u_resolution"]
+    except Exception as e:
+        raise Exception("无法获取 uniform，可能相机位于物体内部？")
+    uniform.write(np.array(res, dtype=np.float32))
+    vertices = np.array([-1.0, -1.0, -1.0, 1.0, 1.0, -1.0, 1.0, 1.0], dtype=np.float32)
+    indices = np.array([0, 1, 2, 1, 2, 3], dtype=np.int32)
+    ibo = ctx.buffer(indices)
+    vbo = ctx.buffer(vertices)
+    vao = ctx.vertex_array(program, vbo, 'in_position', index_buffer = ibo)
+    fbo = ctx.simple_framebuffer(res)
+    fbo.use()
+    fbo.clear(0.0, 0.0, 0.0, 0.0)
+    vao.render(moderngl.TRIANGLES)
+    return Image.frombytes('RGBA', fbo.size, fbo.read(components=4), 'raw', 'RGBA', 0, -1)
+

konabot/plugins/marchtoy/obj.py

@@ -1,14 +1,16 @@
 import numpy as np
 from konabot.plugins.marchtoy.texture import Texture
-from konabot.plugins.marchtoy.utilities import ArgParser, SkslFormatter
-
+from konabot.plugins.marchtoy.utilities import ArgParser, Formatter
+from nonebot import logger
+from typing import Optional
+import re
 OBJECT_ENTRIES = {}
 
 
-def make_obj(name: str, aliases: list[str] = []):
+def make_obj(*name: str):
     def decorator(cls):
-        OBJECT_ENTRIES[name] = cls
-        for alias in aliases:
+        # OBJECT_ENTRIES[name] = cls
+        for alias in [*name]:
             OBJECT_ENTRIES[alias] = cls
         return cls
 
@@ -21,7 +23,7 @@ class Transform:
 
     @staticmethod
     def normalize(p: np.ndarray) -> np.ndarray:
-        return p / np.sqrt(np.dot(p, p))
+        return p / (np.linalg.norm(p) + 1e-8)
 
     def translate(self, x: float, y: float, z: float):
         mat = np.identity(4, dtype=np.float32)
@@ -29,7 +31,7 @@ class Transform:
         self.t = mat @ self.t
         return self
 
-    # scale 会破坏 sdf 的性质，不应该使用
+    # scale 会破坏 sdf 的性质 梯度大小会变 导致 overshoot 等问题
     def scale(self, x: float, y: float, z: float):
         mat = np.identity(4, dtype=np.float32)
         mat[0, 0], mat[1, 1], mat[2, 2] = x, y, z
@@ -37,6 +39,9 @@ class Transform:
         return self
 
     def rotate(self, x: float, y: float, z: float):
+        x = x / 180 * np.pi
+        y = y / 180 * np.pi
+        z = z / 180 * np.pi
         cx, sx = np.cos(x), np.sin(x)
         cy, sy = np.cos(y), np.sin(y)
         cz, sz = np.cos(z), np.sin(z)
@@ -65,7 +70,6 @@ class Transform:
         zaxis = Transform.normalize(q - p)
         xaxis = Transform.normalize(np.cross(zaxis, up))
         yaxis = Transform.normalize(np.cross(xaxis, zaxis))
-        # 约定本地 -Z 为“朝前”，这样和 shader 中使用的相机射线方向保持一致。
         self.t[:3, 0] = xaxis
         self.t[:3, 1] = yaxis
         self.t[:3, 2] = -zaxis
@@ -73,52 +77,202 @@ class Transform:
 
     def p_expr(self) -> str:
         inv = np.linalg.inv(self.t)  # + 1e-5 * np.identity(4, dtype=np.float32))
-        return f"({SkslFormatter.mat4(inv)} * float4(p, 1.0)).xyz"
+        return f"({Formatter.to_vec4(inv)} * vec4(p, 1.0)).xyz"
 
 
 class Object:
     def __init__(self) -> None:
         self.transform: Transform = Transform()
         self.texture: Texture = Texture()
+        self.round_corner: float = 0.0
 
     def parse_args(self, args: list[str]):
         raise NotImplementedError
 
-    def sdf_block(self) -> str:
+    def get_transformed(self, p: np.ndarray) -> np.ndarray:
+        if p.shape != (3,):
+            raise Exception(f"{p} is not a vec3")
+        p = p.copy()
+        inv = np.linalg.inv(self.transform.t)
+
+        return (inv @ np.array((*p, 1)))[:3]
+
+    def sdf_block_glsl(self) -> str:
         raise NotImplementedError
 
 
-@make_obj("cube")
+@make_obj("cube", "box")
 class Cube(Object):
     def __init__(self, _size: np.ndarray = np.array([1.0, 1.0, 1.0])) -> None:
         super().__init__()
         self.size = _size
 
-    def parse_args(self, args: list[str]):
+    def parse_args(self, args: str):
         self.size = ArgParser.as_vec3(args)
 
-    def sdf_block(self) -> str:
-        return f"sdCube({self.transform.p_expr()}, float3({self.size[0]}, {self.size[1]}, {self.size[2]}))"
+    def sdf_block_glsl(self) -> str:
+        return f"sdCube({self.transform.p_expr()}, vec3({self.size[0]}, {self.size[1]}, {self.size[2]}))"
 
-
-@make_obj("sphere")
+@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]):
+    def parse_args(self, args: str):
         self.radius = ArgParser.as_float(args)
 
-    def sdf_block(self) -> str:
+    def sdf_block_glsl(self) -> str:
         return f"sdSphere({self.transform.p_expr()}, {self.radius})"
 
 
-@make_obj("camera", ["cam"])
+@make_obj("cylinder", "cyl")
+class Cylinder(Object):
+    def __init__(self, _radius: float = 1.0, _height: float = 1.0) -> None:
+        super().__init__()
+        self.radius = _radius
+        self.height = _height
+
+    def parse_args(self, args: str):
+        param = ArgParser.as_vec2(args)
+        self.radius = param[0]
+        self.height = param[1]
+
+    def sdf_block_glsl(self) -> str:
+        return (
+            f"sdCappedCylinder({self.transform.p_expr()}, {self.radius}, {self.height})"
+        )
+
+@make_obj("torus")
+class Torus(Object):
+    def __init__(self, _r1: float = 1.0, _r2: float = 0.4) -> None:
+        super().__init__()
+        self.r1 = _r1
+        self.r2 = _r2
+
+    def parse_args(self, args: list[str]):
+        param = ArgParser.as_vec2(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}))"
+
+
+@make_obj("capsule", "pill")
+class Capsule(Object):
+    def __init__(self, _h: float = 1.0, _r: float = 0.25) -> None:
+        super().__init__()
+        self.h = _h
+        self.r = _r
+
+    def parse_args(self, args: list[str]):
+        param = ArgParser.as_vec2(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})"
+
+@make_obj("smoothed", "mix")
+class Smoothed(Object):
+    def __init__(self, _k: float = 12.00):
+        super().__init__()
+        self.block_a: str = "INF"
+        self.block_b: str = "INF"
+        self.k: float = _k
+    
+    def parse_args(self, args: list[str]):
+        from konabot.plugins.marchtoy.scene import Scene
+        try:
+            if not len(args) >= 2:
+                raise Exception("expecting at least 2 args")
+            scene_a = Scene(args[0])
+            scene_b = Scene(args[1])
+            self.block_a = scene_a.canvas_objs[0][1]
+            self.block_b = scene_b.canvas_objs[0][1]
+            if len(args) > 2:
+                self.k = ArgParser.as_float(args[2], 0.25)
+        except Exception as e:
+            raise Exception(f"cannot build smoothed object over {args}: {e}")
+
+            
+    def sdf_block_glsl(self):
+        return f"smin({self.block_a}, {self.block_b}, {self.k})"
+
+@make_obj("intersect", "bool")
+class BoolIntersect(Object):
+    def __init__(self):
+        super().__init__()
+    
+    def parse_args(self, args: list[str]):
+        from konabot.plugins.marchtoy.scene import Scene
+        try:
+            if not len(args) >= 2:
+                raise Exception("expecting at least 2 args")
+            scene_a = Scene(args[0])
+            scene_b = Scene(args[1])
+            self.block_a = scene_a.canvas_objs[0][1]
+            self.block_b = scene_b.canvas_objs[0][1]
+            if len(args) > 2:
+                self.k = ArgParser.as_float(args[2], 0.25)
+        except Exception as e:
+            raise Exception(f"cannot build bool object over {args}: {e}")
+        
+    def sdf_block_glsl(self):
+        return f"max({self.block_a}, {self.block_b})"
+
+@make_obj("substract", "minus")
+class BoolSubstract(Object):
+    def __init__(self):
+        super().__init__()
+    
+    def parse_args(self, args: list[str]):
+        from konabot.plugins.marchtoy.scene import Scene
+        try:
+            if not len(args) >= 2:
+                raise Exception("expecting at least 2 args")
+            scene_a = Scene(args[0])
+            scene_b = Scene(args[1])
+            self.block_a = scene_a.canvas_objs[0][1]
+            self.block_b = scene_b.canvas_objs[0][1]
+            if len(args) > 2:
+                self.k = ArgParser.as_float(args[2], 0.25)
+        except Exception as e:
+            raise Exception(f"cannot build bool object over {args}: {e}")
+        
+    def sdf_block_glsl(self):
+        return f"max({self.block_a}, -{self.block_b})"
+
+@make_obj("add", "addition")
+class BoolAddition(Object):
+    def __init__(self):
+        super().__init__()
+    
+    def parse_args(self, args: list[str]):
+        from konabot.plugins.marchtoy.scene import Scene
+        try:
+            if not len(args) >= 2:
+                raise Exception("expecting at least 2 args")
+            scene_a = Scene(args[0])
+            scene_b = Scene(args[1])
+            self.block_a = scene_a.canvas_objs[0][1]
+            self.block_b = scene_b.canvas_objs[0][1]
+        except Exception as e:
+            raise Exception(f"cannot build bool object over {args}: {e}")
+        
+    def sdf_block_glsl(self):
+        return f"min({self.block_a}, {self.block_b})"
+
+
+
+@make_obj("camera", "cam")
 class Camera(Object):
-    def __init__(self, _focus: float = 1.0) -> None:
+    def __init__(self, _focus: float = 2.0) -> None:
         super().__init__()
         self.focus = _focus
+        # self.transform.translate(8.0, 8.0, 8.0).lookat(0.0, 0.0, 0.0)
 
     def parse_args(self, args: list[str]):
         self.focus = ArgParser.as_float(args)
+

konabot/plugins/marchtoy/op.py

@@ -1,39 +1,37 @@
 from konabot.plugins.marchtoy.obj import Object
-import numpy as np
 from konabot.plugins.marchtoy.utilities import ArgParser
 
 OPERATION_ENTRIES = {}
 
-
-def make_operation(name: str, aliases: list[str] = []):
+def make_op(*name: str):
     def decorator(op):
-        OPERATION_ENTRIES[name] = op
-        for alias in aliases:
+        # OPERATION_ENTRIES[name] = op
+        for alias in [*name]:
             OPERATION_ENTRIES[alias] = op
         return op
 
     return decorator
 
 
-@make_operation("pos", ["translate", "position", "p"])
+@make_op("pos", "translate", "position", "p")
 def translate(obj: Object, args: list[str]):
     pos = ArgParser.as_vec3(args)
     obj.transform.translate(pos[0], pos[1], pos[2])
 
 
-@make_operation("rot", ["rotate", "r"])
+@make_op("rot", "rotate", "r")
 def rotate(obj: Object, args: list[str]):
     pos = ArgParser.as_vec3(args)
     obj.transform.rotate(pos[0], pos[1], pos[2])
 
 
-@make_operation("lookat", ["look", "l"])
+@make_op("lookat", "look", "l")
 def lookat(obj: Object, args: list[str]):
     pos = ArgParser.as_vec3(args)
     obj.transform.lookat(pos[0], pos[1], pos[2])
 
 
-@make_operation("color", ["col", "texture"])
+@make_op("color", "col", "texture")
 def color(obj: Object, args: list[str]):
     try:
         if len(args) == 1:
@@ -46,7 +44,13 @@ def color(obj: Object, args: list[str]):
             col = ArgParser.as_vec4(args)
             obj.texture.color = (col[0], col[1], col[2], col[3])
         else:
-            raise Exception("unknown color")
+            raise Exception("invalid argument number")
 
     except:
         raise Exception("unknown color")
+
+@make_op("rounded", "round_corner", "corner")
+def rounded(obj: Object, args: list[str]):
+    if len(args) >= 1:
+        obj.round_corner = ArgParser.as_float(args)
+            

konabot/plugins/marchtoy/render.py

@@ -1,41 +0,0 @@
-from konabot.plugins.marchtoy.command import Scene
-import skia
-import struct
-from PIL import Image
-import numpy as np
-
-# 暂时先照抄小帕的了，之后有空再单独封装一下
-
-
-async def render(cmd: str, width: int, height: int):
-    scene = Scene(cmd)
-    surface = skia.Surface(width, height)
-    sksl_code = scene.compile()
-
-    runtime_effect = skia.RuntimeEffect.MakeForShader(scene.compile())
-    if runtime_effect is None:
-        raise Exception("cannot compile sksl shader")
-
-    uv_uniform = struct.pack("ff", float(width), float(height))
-    uniform_data = skia.Data.MakeWithCopy(uv_uniform)
-    shader = runtime_effect.makeShader(uniform_data, None, 0)
-    canvas = surface.getCanvas()
-    canvas.clear(skia.Color(0, 0, 0, 0))
-    paint = skia.Paint()
-    paint.setShader(shader)
-    canvas.drawRect(skia.Rect.MakeWH(width, height), paint)
-    image = surface.makeImageSnapshot()
-    target_info = skia.ImageInfo.Make(
-        image.width(),
-        image.height(),
-        skia.ColorType.kBGRA_8888_ColorType,
-        skia.AlphaType.kPremul_AlphaType,
-    )
-    pixel_data = bytearray(
-        image.width() * image.height() * 4
-    )  # 4 bytes per pixel (BGRA)
-    success = image.readPixels(target_info, pixel_data, target_info.minRowBytes())
-    img_array = np.frombuffer(pixel_data, dtype=np.uint8).reshape((height, width, 4))
-    rgb_array = img_array[:, :, [2, 1, 0]]
-    pil_img = Image.fromarray(rgb_array)
-    return pil_img

konabot/plugins/marchtoy/scene.py

@@ -0,0 +1,100 @@
+from typing import Optional
+import pathlib
+import numpy as np
+from nonebot import logger
+
+PATH = pathlib.Path(__file__).parent / "shaders" / "frag.glsl"
+with PATH.open(encoding="utf-8") as f:
+    FS_SRC = f.read()
+
+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(1.0 / np.tan(np.deg2rad(30.0)))
+        self.camera.transform.translate(8.0, 8.0, 8.0).lookat(0.0, 0.0, 0.0)
+
+        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
+            logger.info(f"parsing object: {obj_id} with args {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.")
+            logger.info(f"parsed object {obj_id}({obj_args})")
+            if obj_instance != None:
+                for cmd in cmd_queue:
+                    op_id, op_args = cmd.id, cmd.args
+                    logger.info(f"parsing operation {op_id} with args {op_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.")
+                    logger.info(f"parsed operation {op_id}({op_args})")
+
+                try:
+                    sdf_block = obj_instance.sdf_block_glsl()
+                    self.canvas_objs.append((obj_instance, sdf_block))
+                    logger.info(f"parsed sdf {sdf_block}")
+                except:
+                    # logger.info(f"parsed camera")
+                    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) -> str:
+        
+        sdf_block: str = ""
+        color_block: str = ""
+
+        index = 0
+        for canvas_item in self.canvas_objs:
+            obj, sdf_expr = canvas_item
+            round_corner = f"- {obj.round_corner}" if obj.round_corner > 1e-8 else ""
+            logger.info(round_corner)
+            sdf_block += f"float sd{index} = {sdf_expr}{round_corner};"
+            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 = FS_SRC
+        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

konabot/plugins/marchtoy/shaders/frag.glsl

@@ -0,0 +1,168 @@
+#version 330
+const float EPS = 0.001;
+const int MAX_ITER = 128;
+const float INF = 1e10;
+const float PI = 3.14159;
+
+uniform vec2 u_resolution;
+out vec4 fragColor;
+
+struct sdQuery {
+    float value;
+    int obj_id;
+};
+
+float sdCube(vec3 p, vec3 b) {
+    p = abs(p) - b;
+    return length(max(p, 0.0)) + min(max(p.x, max(p.y, p.z)), 0.0);
+}
+
+float sdSphere(vec3 p, float r) {
+    return length(p) - r;
+}
+
+float sdCappedCylinder( vec3 p, float r, float h )
+{
+    vec2 d = abs(vec2(length(p.xz),p.y)) - vec2(r,h);
+    return min(max(d.x,d.y),0.0) + length(max(d,0.0));
+}
+
+float sdVerticalCapsule( vec3 p, float h, float r )
+{
+    p.y -= clamp( p.y, 0.0, h );
+    return length( p ) - r;
+}
+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);
+// }
+
+float smin( float a, float b, float k )
+{
+    k *= 2.0;
+    float x = (b-a)/k;
+    float g = 0.5*(x+sqrt(x*x+1.0));
+    return b - k * g;
+}
+
+sdQuery sd(vec3 p) {
+    sdQuery qry;
+    qry.value = INF;
+    qry.obj_id = -1;
+    <SDF_BLOCK>
+    return qry;
+}
+
+vec3 nrm(vec3 p) {
+    vec2 d = vec2(EPS, 0.0);
+    return normalize(vec3(
+        sd(p + d.xyy).value - sd(p - d.xyy).value,
+        sd(p + d.yxy).value - sd(p - d.yxy).value,
+        sd(p + d.yyx).value - sd(p - d.yyx).value
+    ));
+}
+
+float saturate(float x) {
+    return clamp(x, 0.0, 1.0);
+}
+
+float ggx_distribution(vec3 n, vec3 h, float roughness) {
+    float alpha = roughness * roughness;
+    float alpha2 = alpha * alpha;
+    float NdotH = saturate(dot(n, h));
+    float denom = NdotH * NdotH * (alpha2 - 1.0) + 1.0;
+    return alpha2 / max(PI * denom * denom, EPS);
+}
+
+float geometry_schlick_ggx(float NdotX, float roughness) {
+    float r = roughness + 1.0;
+    float k = r * r / 8.0;
+    return NdotX / max(NdotX * (1.0 - k) + k, EPS);
+}
+
+float geometry_smith(vec3 n, vec3 v, vec3 l, float roughness) {
+    float NdotV = saturate(dot(n, v));
+    float NdotL = saturate(dot(n, l));
+    return geometry_schlick_ggx(NdotV, roughness) * geometry_schlick_ggx(NdotL, roughness);
+}
+
+vec3 fresnel_schlick(vec3 f0, float cos_theta) {
+    return f0 + (1.0 - f0) * pow(1.0 - saturate(cos_theta), 5.0);
+}
+
+vec3 tonemap_aces(vec3 c) {
+    const float a = 2.51;
+    const float b = 0.03;
+    const float c1 = 2.43;
+    const float d = 0.59;
+    const float e = 0.14;
+    return clamp((c * (a * c + b)) / (c * (c1 * c + d) + e), 0.0, 1.0);
+}
+
+vec4 materialColor(int obj_id) {
+    <COLOR_BLOCK>
+    return vec4(1.0);
+}
+
+vec4 color(vec3 p, vec3 r, int obj_id) {
+    vec3 light_col = vec3(1.0);
+    vec4 albedo = materialColor(obj_id);
+    vec3 N = nrm(p);
+    vec3 V = normalize(-r);
+    vec3 L = normalize(vec3(0.5, 0.8, -0.6));
+    vec3 H = normalize(V + L);
+    float roughness = 0.45;
+    float metallic = 0.02;
+    float NdotL = saturate(dot(N, L));
+    float NdotV = saturate(dot(N, V));
+    float D = ggx_distribution(N, H, roughness);
+    float G = geometry_smith(N, V, L, roughness);
+    vec3 F0 = mix(vec3(0.04), albedo.rgb, metallic);
+    vec3 F = fresnel_schlick(F0, dot(V, H));
+    vec3 kD = (1.0 - F) * (1.0 - metallic);
+    vec3 diffuse = kD * albedo.rgb / PI;
+    vec3 specular = D * G * F / max(4.0 * NdotL * NdotV, EPS);
+
+    float hemi = N.y * 0.5 + 0.5;
+    vec3 sky_ambient = vec3(0.60, 0.72, 0.92);
+    vec3 ground_ambient = vec3(0.18, 0.16, 0.14);
+    vec3 ambient = mix(ground_ambient, sky_ambient, hemi) * (diffuse + 0.25 * F0) * 0.35;
+
+    vec3 col = ambient + (diffuse + specular) * light_col * NdotL;
+    col = tonemap_aces(col);
+    col = pow(col, vec3(1.0 / 2.2));
+    return vec4(col, 1.0);
+}
+
+vec4 march(vec3 p, vec3 r) {
+    sdQuery qry;
+    vec4 col = vec4(0.0);
+    for(int i = 0; i < MAX_ITER; ++i) {
+        qry = sd(p);
+        if(qry.value < EPS){
+            col = color(p, r, qry.obj_id);
+            break;
+        }
+        p += qry.value * r;
+    }
+    return col;
+}
+
+void main() {
+    vec2 uv = 2. * (gl_FragCoord.xy / u_resolution - .5) * vec2(u_resolution.x / u_resolution.y, 1.);
+    vec3 c_p = vec3(<CAM_POS>);
+    vec3 c_z = normalize(vec3(<CAM_DIR>));
+    vec3 world_up = abs(c_z.y) > 0.999 ? vec3(0., 0., 1.) : vec3(0., 1., 0.);
+    vec3 c_x = normalize(cross(c_z, world_up));
+    vec3 c_y = normalize(cross(c_x, c_z));
+    mat3 view = mat3(c_x, c_y, c_z);
+    vec3 r = normalize(vec3(uv, <CAM_FOCUS>));
+    fragColor = march(c_p, view * r);
+}

konabot/plugins/marchtoy/shaders/raymarch.sksl

@@ -1,73 +0,0 @@
-uniform float2 u_resolution;
-
-const float EPS = 0.001;
-const int MAX_ITER = 64;
-struct sdQuery {
-    float value;
-    int obj_id;
-};
-
-float sdCube(float3 p, float3 b) {
-    p = abs(p) - b;
-    return length(max(p, 0.0)) + min(max(p.x, max(p.y, p.z)), 0.0);
-}
-
-float sdSphere(float3 p, float r) {
-    return length(p) - r;
-}
-
-sdQuery sd(float3 p) {
-    sdQuery qry;
-    qry.value = 100000000.0;
-    qry.obj_id = -1;
-    <SDF_BLOCK>
-    return qry;
-}
-
-float3 nrm(float3 p) {
-    float2 d = float2(EPS, 0.0);
-    return normalize(float3(
-        sd(p + d.xyy).value - sd(p - d.xyy).value,
-        sd(p + d.yxy).value - sd(p - d.yxy).value,
-        sd(p + d.yyx).value - sd(p - d.yyx).value
-    ));
-}
-
-float4 materialColor(int obj_id) {
-    <COLOR_BLOCK>
-    return float4(1.0);
-}
-
-float4 color(float3 p, int obj_id) {
-    float3 normal = nrm(p);
-    float3 light_dir = normalize(float3(0.5, 0.8, -0.6));
-    float light = 0.2 + 0.8 * max(dot(normal, light_dir), 0.0);
-    float4 base = materialColor(obj_id);
-    return float4(base.rgb * light, base.a);
-}
-
-float4 march(float3 p, float3 r) {
-    sdQuery qry;
-    float4 col = float4(0.0);
-    for(int i = 0; i < MAX_ITER; ++i) {
-        qry = sd(p);
-        if(qry.value < EPS){
-            col = color(p, qry.obj_id);
-            break;
-        }
-        p += qry.value * r;
-    }
-    return col;
-}
-
-half4 main(float2 fragCoord) {
-    float2 uv = -2. * (fragCoord / u_resolution - .5) * float2(u_resolution.x / u_resolution.y, 1.);
-    float3 c_p = float3(<CAM_POS>);
-    float3 c_z = normalize(float3(<CAM_DIR>));
-    float3 world_up = abs(c_z.y) > 0.999 ? float3(0., 0., 1.) : float3(0., 1., 0.);
-    float3 c_x = normalize(cross(c_z, world_up));
-    float3 c_y = normalize(cross(c_x, c_z));
-    float3x3 view = float3x3(c_x, c_y, c_z);
-    float3 r = normalize(float3(uv, <CAM_FOCUS>));
-    return half4(march(c_p, view * r));
-}

konabot/plugins/marchtoy/shaders/vert.glsl

@@ -0,0 +1,6 @@
+#version 330
+in vec2 in_position;
+
+void main() {
+    gl_Position = vec4(in_position, 0.0, 1.0);
+}

konabot/plugins/marchtoy/texture.py

@@ -1,13 +1,54 @@
+from dataclasses import dataclass
+
 COLORS = {
     "red": (1.0, 0.0, 0.0, 1.0),
     "green": (0.0, 1.0, 0.0, 1.0),
     "blue": (0.0, 0.0, 1.0, 1.0),
     "white": (1.0, 1.0, 1.0, 1.0),
+    "black": (0.0, 0.0, 0.0, 1.0),
+    "gray": (0.5, 0.5, 0.5, 1.0),
+    "light_gray": (0.75, 0.75, 0.75, 1.0),
+    "dark_gray": (0.25, 0.25, 0.25, 1.0),
+    "dark_red": (0.5, 0.0, 0.0, 1.0),
+    "crimson": (0.86, 0.08, 0.24, 1.0),
+    "pink": (1.0, 0.75, 0.8, 1.0),
+    "hot_pink": (1.0, 0.41, 0.71, 1.0),
+    "orange_red": (1.0, 0.27, 0.0, 1.0),
+    "orange": (1.0, 0.65, 0.0, 1.0),
+    "gold": (1.0, 0.84, 0.0, 1.0),
+    "yellow": (1.0, 1.0, 0.0, 1.0),
+    "light_yellow": (1.0, 1.0, 0.88, 1.0),
+    "khaki": (0.94, 0.90, 0.55, 1.0),
+    "light_green": (0.56, 0.93, 0.56, 1.0),
+    "lime": (0.0, 1.0, 0.0, 1.0),
+    "forest_green": (0.13, 0.55, 0.13, 1.0),
+    "dark_green": (0.0, 0.39, 0.0, 1.0),
+    "olive": (0.5, 0.5, 0.0, 1.0),
+    "teal": (0.0, 0.5, 0.5, 1.0),
+    "light_blue": (0.68, 0.85, 0.9, 1.0),
+    "sky_blue": (0.53, 0.81, 0.92, 1.0),
+    "cyan": (0.0, 1.0, 1.0, 1.0),
+    "navy": (0.0, 0.0, 0.5, 1.0),
+    "royal_blue": (0.25, 0.41, 0.88, 1.0),
+    "steel_blue": (0.27, 0.51, 0.71, 1.0),
+    "purple": (0.5, 0.0, 0.5, 1.0),
+    "magenta": (1.0, 0.0, 1.0, 1.0),
+    "violet": (0.93, 0.51, 0.93, 1.0),
+    "lavender": (0.90, 0.90, 0.98, 1.0),
+    "indigo": (0.29, 0.0, 0.51, 1.0),
+    "brown": (0.65, 0.16, 0.16, 1.0),
+    "saddle_brown": (0.55, 0.27, 0.07, 1.0),
+    "chocolate": (0.82, 0.41, 0.12, 1.0),
+    "tan": (0.82, 0.71, 0.55, 1.0),
+    "beige": (0.96, 0.96, 0.86, 1.0),
+    "coral": (1.0, 0.5, 0.31, 1.0),
+    "salmon": (0.98, 0.5, 0.45, 1.0),
+    "turquoise": (0.25, 0.88, 0.82, 1.0),
+    "aqua": (0.0, 1.0, 1.0, 1.0),
+    "plum": (0.87, 0.63, 0.87, 1.0),
+    "wheat": (0.96, 0.87, 0.70, 1.0),
 }
 
-from dataclasses import dataclass
-
-
 @dataclass
 class Texture:
     color: tuple[float, float, float, float] = (1.0, 1.0, 1.0, 1.0)

konabot/plugins/marchtoy/utilities.py

@@ -1,28 +1,58 @@
 import numpy as np
+import regex as re
 from konabot.plugins.marchtoy.texture import COLORS
 
-
-class SkslFormatter:
+class Formatter:
     @staticmethod
-    def mat4(m: np.ndarray) -> str:
+    def to_vec4(m: np.ndarray) -> str:
         if m.shape != (4, 4):
             m = np.identity(4)
-        v_0 = ", ".join([str(x) for x in m[0]])
-        v_1 = ", ".join([str(x) for x in m[1]])
-        v_2 = ", ".join([str(x) for x in m[2]])
-        v_3 = ", ".join([str(x) for x in m[3]])
-        return f"float4x4(float4({v_0}), float4({v_1}), float4({v_2}), float4({v_3}))"
+        v_0 = ", ".join([str(x) for x in m[:, 0]])
+        v_1 = ", ".join([str(x) for x in m[:, 1]])
+        v_2 = ", ".join([str(x) for x in m[:, 2]])
+        v_3 = ", ".join([str(x) for x in m[:, 3]])
+        return f"mat4(vec4({v_0}), vec4({v_1}), vec4({v_2}), vec4({v_3}))"
 
 """
 TODO: 除零出现 nan 情况的单独处理
 """
 class ArgParser:
     @staticmethod
-    def as_float(args: list[str], default: float = 0.0) -> float:
+    def to_params(args: str, delim: str = ',') -> list[str]:
+        raise DeprecationWarning
+        _params = args.replace(" ", "").split(delim)
+        params: list[str] = []
+        # 还是避免 while 为好
+        for param in _params:
+            if param != "":
+                params.append(param)
+        return params
+            
+    @staticmethod
+    def as_float(args: list[str] | str, default: float = 0.0) -> float:
         try:
-            if len(args) >= 1:
+            if isinstance(args, list) and len(args) >= 1:
                 x = float(args[0])
                 return x
+            elif isinstance(args, str):
+                x = float(args)
+                return x
+        except:
+            # raise Exception(f"cannot parse {args}")
+            return default
+
+    @staticmethod
+    def as_vec2(
+        args: list[str], default: np.ndarray = np.array((0.0, 0.0))
+    ) -> np.ndarray:
+        try:
+            if len(args) == 1:
+                x = float(args[0])
+                return np.array((x, x))
+            elif len(args) == 2:
+                x = float(args[0])
+                y = float(args[1])
+                return np.array((x, y))
         except:
             raise Exception(f"cannot parse {args}")
         return default
@@ -40,9 +70,9 @@ class ArgParser:
                 y = float(args[1])
                 z = float(args[2])
                 return np.array((x, y, z))
+            return default
         except:
             raise Exception(f"cannot parse {args}")
-        return default
 
     @staticmethod
     def as_vec4(
@@ -66,4 +96,4 @@ class ArgParser:
     def as_literal_color(args: list[str], default=np.array((1.0, 1.0, 1.0, 1.0))):
         if len(args) == 1 and args[0] in COLORS:
             return np.array(COLORS[args[0]])
-        return default
+        return default

poetry.lock

@@ -1709,6 +1709,85 @@ type = "legacy"
 url = "https://pypi.tuna.tsinghua.edu.cn/simple"
 reference = "mirrors"
 
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+
 [[package]]
 name = "greenlet"
 version = "3.4.0"
@@ -2534,6 +2613,76 @@ type = "legacy"
 url = "https://pypi.tuna.tsinghua.edu.cn/simple"
 reference = "mirrors"
 
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 [[package]]
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 version = "1.1.2"
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 url = "https://pypi.tuna.tsinghua.edu.cn/simple"
 reference = "mirrors"
 
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+]
+
+[package.source]
+type = "legacy"
+url = "https://pypi.tuna.tsinghua.edu.cn/simple"
+reference = "mirrors"
+
 [[package]]
 name = "requests"
 version = "2.33.1"
@@ -5376,4 +5654,4 @@ reference = "mirrors"
 [metadata]
 lock-version = "2.1"
 python-versions = ">=3.12,<4.0"
-content-hash = "cb843d7ddb9458a0c0fd43f254b0362a05c0a017cf1df1d855d34caa98f4d10b"
+content-hash = "91e6623a2ea57cf1189d99cfc085abb3e5fe46f7fd1d68390292ab8d5f0fa304"

pyproject.toml

@@ -39,6 +39,8 @@ dependencies = [
   "aiosignal (>=1.4.0,<2.0.0)",
   "pytest-mock (>=3.15.1,<4.0.0)",
   "skia-python (>=144.0.post2,<145.0)",
+  "moderngl (>=5.12.0,<6.0.0)",
+  "regex (>=2026.4.4,<2027.0.0)",
 ]
 
 [tool.poetry]