feat(math-ct): ЦТ 2020 V1 — 32 задания (5 с PNG-изображениями) + инфраструктура PDF→PNG

2026-06-02 09:44:23 +03:00
parent f2b0db4d9a
commit 44e262b025
9 changed files with 342 additions and 0 deletions
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+"""
+Render one or more pages of a PDF to PNG files.
+
+Usage:
+  python render_pdf_page.py <pdf_path> <page_numbers> [--dpi 300] [--out-dir ./pages]
+  python render_pdf_page.py "F:/ЦТ/2018.pdf" "5,6,7,8" --dpi 300 --out-dir ./tmp_pages
+
+page_numbers: comma-separated 1-based page numbers
+"""
+import sys
+import os
+import argparse
+import fitz  # PyMuPDF
+
+def render_pages(pdf_path, pages, dpi=300, out_dir='.'):
+    os.makedirs(out_dir, exist_ok=True)
+    doc = fitz.open(pdf_path)
+    scale = dpi / 72.0
+    mat = fitz.Matrix(scale, scale)
+    results = []
+    for page_num in pages:
+        idx = page_num - 1
+        if idx < 0 or idx >= len(doc):
+            print(f'  Page {page_num} out of range (doc has {len(doc)} pages)', file=sys.stderr)
+            continue
+        page = doc[idx]
+        pix = page.get_pixmap(matrix=mat)
+        out_path = os.path.join(out_dir, f'page_{page_num:03d}.png')
+        pix.save(out_path)
+        results.append(out_path)
+        print(f'  Rendered page {page_num} -> {out_path} ({pix.width}x{pix.height})')
+    doc.close()
+    return results
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('pdf_path')
+    parser.add_argument('pages', help='comma-separated 1-based page numbers, e.g. "5,6,7,8"')
+    parser.add_argument('--dpi', type=int, default=300)
+    parser.add_argument('--out-dir', default='./tmp_pages')
+    args = parser.parse_args()
+    pages = [int(p.strip()) for p in args.pages.split(',')]
+    render_pages(args.pdf_path, pages, dpi=args.dpi, out_dir=args.out_dir)