import os import math import argparse import tkinter as tk # グローバル設定 settings = { "linecolor": "black", "fillcolor": "", "fontcolor": "black", "linewidth": 1, "fillpattern": "", "projection": "isometric" } def terminate(): print(f"\nPress ENTER to terminate>>\n") exit() # 等角投影 def isometric_projection(x, y, z): angle_x = math.radians(30) angle_y = math.radians(30) px = x * math.cos(angle_x) - z * math.cos(angle_x) py = x * math.sin(angle_y) + y - z * math.sin(angle_y) return px, py # 立方体描画 def draw_cube(canvas, x, y, z, size): vertices = [] for dx in [0, size]: for dy in [0, size]: for dz in [0, size]: px, py = isometric_projection(x+dx, y+dy, z+dz) vertices.append((px, py)) edges = [ (0,1),(0,2),(0,4),(1,3),(1,5),(2,3),(2,6),(3,7), (4,5),(4,6),(5,7),(6,7) ] for i,j in edges: canvas.create_line(vertices[i][0], vertices[i][1], vertices[j][0], vertices[j][1], fill=settings["linecolor"], width=settings["linewidth"]) # ピラミッド描画 def draw_pyramid(canvas, x, y, z, base, height): base_pts = [] for dx, dz in [(0,0), (base,0), (base,base), (0,base)]: px, py = isometric_projection(x+dx, y, z+dz) base_pts.append((px, py)) apex = isometric_projection(x + base/2, y - height, z + base/2) for i in range(4): canvas.create_line(base_pts[i][0], base_pts[i][1], base_pts[(i+1)%4][0], base_pts[(i+1)%4][1], fill=settings["linecolor"], width=settings["linewidth"]) canvas.create_line(base_pts[i][0], base_pts[i][1], apex[0], apex[1], fill=settings["linecolor"], width=settings["linewidth"]) # コマンド解析 def parse_command(canvas, cmd): tokens = cmd.strip().split() if not tokens: return None, None command = tokens[0] if command == "canvas": width, height = int(tokens[1]), int(tokens[2]) root = tk.Tk() canvas = tk.Canvas(root, width=width, height=height, bg="white") canvas.pack() return root, canvas elif command == "line": x1, y1, x2, y2 = map(int, tokens[1:5]) canvas.create_line(x1, y1, x2, y2, fill=settings["linecolor"], width=settings["linewidth"]) elif command == "circle": x, y, r = map(int, tokens[1:4]) canvas.create_oval(x-r, y-r, x+r, y+r, outline=settings["linecolor"], fill=settings["fillcolor"], width=settings["linewidth"]) elif command == "ellipse": x, y, w, h = map(int, tokens[1:5]) canvas.create_oval(x-w//2, y-h//2, x+w//2, y+h//2, outline=settings["linecolor"], fill=settings["fillcolor"], width=settings["linewidth"]) elif command == "square": x, y, size = map(int, tokens[1:4]) canvas.create_rectangle(x, y, x+size, y+size, outline=settings["linecolor"], fill=settings["fillcolor"], width=settings["linewidth"]) elif command == "triangle": x, y, size = map(int, tokens[1:4]) h = int(size * math.sqrt(3)/2) points = [(x, y), (x+size, y), (x+size//2, y-h)] canvas.create_polygon(points, outline=settings["linecolor"], fill=settings["fillcolor"], width=settings["linewidth"]) elif command == "polygon": x, y, sides, radius = int(tokens[1]), int(tokens[2]), int(tokens[3]), int(tokens[4]) points = [] for i in range(sides): angle = 2 * math.pi * i / sides px = x + radius * math.cos(angle) py = y + radius * math.sin(angle) points.append((px, py)) canvas.create_polygon(points, outline=settings["linecolor"], fill=settings["fillcolor"], width=settings["linewidth"]) elif command == "rect": x, y, w, h = map(int, tokens[1:5]) canvas.create_rectangle(x, y, x+w, y+h, outline=settings["linecolor"], fill=settings["fillcolor"], width=settings["linewidth"]) elif command == "text": text = tokens[1].strip('"') x, y = int(tokens[2]), int(tokens[3]) font = tokens[4].split("=")[1] size = int(tokens[5].split("=")[1]) angle = int(tokens[6].split("=")[1]) canvas.create_text(x, y, text=text, font=(font, size), fill=settings["fontcolor"], angle=angle) elif command in ["linecolor", "fillcolor", "fontcolor", "linewidth", "fillpattern"]: key = command value = tokens[1] settings[key] = int(value) if key == "linewidth" else value elif command == "spring": x, y = int(tokens[1]), int(tokens[2]) length = int(tokens[3].split("=")[1]) width = int(tokens[4].split("=")[1]) cycles = int(tokens[5].split("=")[1]) angle = math.radians(int(tokens[6].split("=")[1])) points = [] for i in range(cycles * 2 + 1): dx = length * i / (cycles * 2) dy = width if i % 2 == 0 else -width px = x + dx * math.cos(angle) - dy * math.sin(angle) py = y + dx * math.sin(angle) + dy * math.cos(angle) points.append((px, py)) canvas.create_line(points, fill=settings["linecolor"], width=settings["linewidth"], smooth=True) elif command == "zigzag": x, y = int(tokens[1]), int(tokens[2]) length = int(tokens[3].split("=")[1]) width = int(tokens[4].split("=")[1]) cycles = int(tokens[5].split("=")[1]) angle = math.radians(int(tokens[6].split("=")[1])) points = [] for i in range(cycles + 1): dx = length * i / cycles dy = width if i % 2 == 0 else -width px = x + dx * math.cos(angle) py = y + dy * math.sin(angle) points.append((px, py)) canvas.create_line(points, fill=settings["linecolor"], width=settings["linewidth"]) elif command == "cube3d": x, y, z = map(int, tokens[1:4]) size = int(tokens[4].split("=")[1]) draw_cube(canvas, x, y, z, size) elif command == "pyramid3d": x, y, z = map(int, tokens[1:4]) base = int(tokens[4].split("=")[1]) height = int(tokens[5].split("=")[1]) draw_pyramid(canvas, x, y, z, base, height) elif command == "project3d": settings["projection"] = tokens[1] return None, None # スクリプト実行 def run_cad_script(script): root, canvas = None, None for line in script.strip().split("\n"): if line.startswith("canvas"): root, canvas = parse_command(None, line) else: parse_command(canvas, line) if root: root.mainloop() def main(): parser = argparse.ArgumentParser(description="Simple CAD interpreter") parser.add_argument("filename", nargs="?", default="example3d.ecad", help="CAD script file") args = parser.parse_args() if not os.path.exists(args.filename): print(f"ファイルが見つかりません: {args.filename}") terminate() with open(args.filename, "r", encoding="utf-8") as f: script = f.read() run_cad_script(script) if __name__ == "__main__": main()