建立方向盘项目初始版本

scripts/render_shop_sprues_preview.py

@@ -0,0 +1,37 @@
+"""Render a top view from the exported binary STL meshes using Pillow."""
+from pathlib import Path
+import struct
+from PIL import Image, ImageDraw, ImageFont
+
+ROOT = Path(__file__).resolve().parent.parent
+OUT = ROOT / 'models' / 'print_shop_joined_eight'
+image = Image.new('RGB',(1200,1120),'#f5f7fa')
+draw = ImageDraw.Draw(image)
+font_path='C:/Windows/Fonts/msyh.ttc'
+font=ImageFont.truetype(font_path,32)
+small=ImageFont.truetype(font_path,23)
+tiny=ImageFont.truetype(font_path,19)
+draw.text((60,35),'打印店交付：每组 8 个垫片',font=font,fill='#172d4d')
+draw.text((60,90),'支架单独一个文件；以下两组分别作为拼件提交',font=small,fill='#53677e')
+
+def draw_mesh(filename,left,top,color):
+    data=(OUT/filename).read_bytes()
+    count=struct.unpack_from('<I',data,80)[0]
+    if len(data)!=84+50*count:raise RuntimeError('Expected binary STL')
+    scale=10
+    # Bounding box x=-5.543..29.543, y=-6..54; flip Y for screen.
+    def xy(x,y):return (left+(x+5.543277)*scale,top+(54-y)*scale)
+    for i in range(count):
+        t=struct.unpack_from('<12fH',data,84+i*50)
+        pts=[xy(t[3],t[4]),xy(t[6],t[7]),xy(t[9],t[10])]
+        draw.polygon(pts,fill=color)
+
+draw.text((150,155),'0.5 mm 垫片 × 8',font=font,fill='#996115')
+draw.text((680,155),'1.0 mm 垫片 × 8',font=font,fill='#087c76')
+draw_mesh('垫片0.5mm_8个拼件.stl',165,230,'#dc9b40')
+draw_mesh('垫片1.0mm_8个拼件.stl',695,230,'#339b91')
+draw.text((60,900),'两组均为一体拼件，每组 7 根连接杆，截面 1.8 × 1.8 mm。',font=small,fill='#304764')
+draw.text((60,945),'颜色仅用于区分厚度；打印后从垫片外缘剪除连接杆并修平。',font=small,fill='#304764')
+draw.text((60,990),'垫片与连接杆的实际结合面受垫片厚度限制，生产前请商家确认。',font=tiny,fill='#8a4b14')
+draw.text((60,1035),'图为 STL 顶视示意，实际切片及成品以打印商评估为准。',font=tiny,fill='#53677e')
+image.save(OUT/'拼件预览.png')