38 lines
1.9 KiB
Python
38 lines
1.9 KiB
Python
"""Render a top view from the exported binary STL meshes using Pillow."""
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from pathlib import Path
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import struct
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from PIL import Image, ImageDraw, ImageFont
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ROOT = Path(__file__).resolve().parent.parent
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OUT = ROOT / 'models' / 'print_shop_joined_eight'
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image = Image.new('RGB',(1200,1120),'#f5f7fa')
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draw = ImageDraw.Draw(image)
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font_path='C:/Windows/Fonts/msyh.ttc'
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font=ImageFont.truetype(font_path,32)
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small=ImageFont.truetype(font_path,23)
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tiny=ImageFont.truetype(font_path,19)
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draw.text((60,35),'打印店交付：每组 8 个垫片',font=font,fill='#172d4d')
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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')
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def draw_mesh(filename,left,top,color):
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data=(OUT/filename).read_bytes()
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count=struct.unpack_from('<I',data,80)[0]
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if len(data)!=84+50*count:raise RuntimeError('Expected binary STL')
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scale=10
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# Bounding box x=-5.543..29.543, y=-6..54; flip Y for screen.
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def xy(x,y):return (left+(x+5.543277)*scale,top+(54-y)*scale)
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for i in range(count):
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t=struct.unpack_from('<12fH',data,84+i*50)
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pts=[xy(t[3],t[4]),xy(t[6],t[7]),xy(t[9],t[10])]
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draw.polygon(pts,fill=color)
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draw.text((150,155),'0.5 mm 垫片 × 8',font=font,fill='#996115')
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draw.text((680,155),'1.0 mm 垫片 × 8',font=font,fill='#087c76')
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draw_mesh('垫片0.5mm_8个拼件.stl',165,230,'#dc9b40')
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draw_mesh('垫片1.0mm_8个拼件.stl',695,230,'#339b91')
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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')
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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')
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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')
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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')
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image.save(OUT/'拼件预览.png')
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