add convert tool

2025-06-09 01:42:47 +08:00
parent 9042815b34
commit 7cc1a5b8d2
3 changed files with 235 additions and 1 deletions
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,10 +1,12 @@
-git[project]
+[project]
 name = "rord-layout-recognation"
 version = "0.1.0"
 description = "Add your description here"
 readme = "README.md"
 requires-python = ">=3.12"
 dependencies = [
+    "cairosvg>=2.8.2",
+    "gdstk>=0.9.60",
    "numpy>=2.3.0",
    "opencv-python>=4.11.0.86",
    "pillow>=11.2.1",
--- a/tools/layout2png.py
+++ b/tools/layout2png.py
@@ -0,0 +1,88 @@
+import gdstk
+import cairosvg
+import argparse
+import os
+
+def convert_layout_to_png_via_svg(layout_path, png_path, cell_name=None, pixels_per_unit=10):
+    """
+    通过先生成 SVG 再转换为 PNG 的方式，将 GDSII 或 OASIS 文件光栅化。
+    此版本修正了 write_svg 的参数错误，兼容性更强。
+
+    参数:
+        layout_path (str): 输入的版图文件路径（.gds 或 .oas）。
+        png_path (str): 输出的 PNG 文件路径。
+        cell_name (str, optional): 需要转换的单元名称。如果为 None，则使用顶层单元。
+        pixels_per_unit (int, optional): 版图数据库单位到像素的转换比例，控制图像分辨率。
+    """
+    print(f"正在从 '{layout_path}' 读取版图文件...")
+
+    # 1. 加载版图文件
+    _, extension = os.path.splitext(layout_path)
+    extension = extension.lower()
+
+    if extension == '.gds':
+        lib = gdstk.read_gds(layout_path)
+    elif extension == '.oas':
+        lib = gdstk.read_oas(layout_path)
+    else:
+        raise ValueError(f"不支持的文件类型: '{extension}'。请输入 .gds 或 .oas 文件。")
+
+    if cell_name:
+        cell = lib.cells[cell_name]
+    else:
+        top_cells = lib.top_level()
+        if not top_cells:
+            raise ValueError("错误：版图文件中没有找到顶层单元。")
+        cell = top_cells[0]
+        print(f"未指定单元名称，自动选择顶层单元: '{cell.name}'")
+
+    # 2. 将版图单元写入临时的 SVG 文件 (已移除无效的 padding 参数)
+    temp_svg_path = png_path + ".temp.svg"
+    print(f"步骤 1/2: 正在将单元 '{cell.name}' 转换为临时 SVG 文件...")
+    cell.write_svg(
+        temp_svg_path # 隐藏默认字体，避免影响边界
+    )
+
+    # 3. 使用 cairosvg 将 SVG 文件转换为 PNG
+    print(f"步骤 2/2: 正在将 SVG 转换为 PNG...")
+    # 获取单元的精确边界框
+    bb = cell.bb()
+    if bb is None:
+        raise ValueError(f"单元 '{cell.name}' 为空或无法获取其边界框。")
+        
+    # 根据边界框和分辨率计算输出图像的宽度
+    width, height = bb[1] - bb[0]
+    output_width = width * pixels_per_unit
+    
+    cairosvg.svg2png(url=temp_svg_path, write_to=png_path, output_width=output_width)
+
+    # 4. 清理临时的 SVG 文件
+    os.remove(temp_svg_path)
+    
+    print(f"成功！图像已保存至: '{png_path}'")
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(
+        description="将 GDSII (.gds) 或 OASIS (.oas) 版图文件转换为 PNG 图像 (通过SVG)。",
+        epilog="示例: python rasterize.py -i my_chip.oas -o my_chip.png -ppu 20"
+    )
+    parser.add_argument('-i', '--input', type=str, required=True, help="输入的版图文件路径 (.gds 或 .oas)。")
+    parser.add_argument('-o', '--output', type=str, help="输出的 PNG 文件路径。如果未提供，将使用输入文件名并替换扩展名为 .png。")
+    parser.add_argument('-c', '--cell', type=str, default=None, help="要转换的特定单元的名称。默认为顶层单元。")
+    parser.add_argument('-ppu', '--pixels_per_unit', type=int, default=10, help="每微米（um）的像素数，用于控制输出图像的分辨率。")
+    args = parser.parse_args()
+
+    if not args.output:
+        base_name = os.path.splitext(os.path.basename(args.input))[0]
+        args.output = f"{base_name}.png"
+        print(f"未指定输出路径，将自动保存为: '{args.output}'")
+
+    try:
+        convert_layout_to_png_via_svg(
+            layout_path=args.input,
+            png_path=args.output,
+            cell_name=args.cell,
+            pixels_per_unit=args.pixels_per_unit
+        )
+    except Exception as e:
+        print(f"\n处理失败: {e}")
--- a/uv.lock
+++ b/uv.lock
@@ -7,6 +7,89 @@ resolution-markers = [
    "(platform_machine != 'aarch64' and sys_platform == 'linux') or (sys_platform != 'darwin' and sys_platform != 'linux')",
 ]

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+dependencies = [
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+    { name = "cssselect2" },
+    { name = "defusedxml" },
+    { name = "pillow" },
+    { name = "tinycss2" },
+]
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+    { name = "gdstk" },
    { name = "numpy" },
    { name = "opencv-python" },
    { name = "pillow" },
@@ -339,6 +460,8 @@ dependencies = [

 [package.metadata]
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