65 lines
2.1 KiB
Python
65 lines
2.1 KiB
Python
import ezdxf
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from ezdxf.addons.drawing import RenderContext, Frontend
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from ezdxf.addons.drawing.matplotlib import MatplotlibBackend
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import matplotlib.pyplot as plt
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import os
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import sys
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# --- 配置 ---
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# 将脚本的父目录（项目根目录）添加到Python路径中
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SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
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PROJECT_ROOT = os.path.dirname(SCRIPT_DIR)
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sys.path.append(PROJECT_ROOT)
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INPUT_DXF_NAME = "图签测试.dxf"
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OUTPUT_PDF_NAME = "图签测试_from_dxf.pdf"
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INPUT_DXF_PATH = os.path.join(SCRIPT_DIR, INPUT_DXF_NAME)
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# 确保输出目录存在
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output_dir = os.path.join(PROJECT_ROOT, "04_Test_Files", "结果")
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os.makedirs(output_dir, exist_ok=True)
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OUTPUT_PDF_PATH = os.path.join(output_dir, OUTPUT_PDF_NAME)
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def dxf_to_pdf(input_path, output_path):
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"""
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将指定的 DXF 文件渲染并保存为 PDF。
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"""
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if not os.path.exists(input_path):
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print(f"错误: 输入的 DXF 文件未找到: '{input_path}'")
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return
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try:
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print(f"--- 正在加载 DXF 文件: {os.path.basename(input_path)} ---")
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doc = ezdxf.readfile(input_path)
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msp = doc.modelspace()
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# 创建 Matplotlib Figure 和 Axes
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fig = plt.figure()
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ax = fig.add_axes([0, 0, 1, 1])
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# 设置渲染上下文和后端
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ctx = RenderContext(doc)
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out = MatplotlibBackend(ax)
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print("--- 开始渲染 DXF 内容 ---")
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# 使用 ezdxf 的绘图插件渲染模型空间
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Frontend(ctx, out).draw_layout(msp, finalize=True)
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print(f"--- 正在将渲染结果保存为 PDF: {os.path.basename(output_path)} ---")
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# 保存为 PDF，dpi可以调整清晰度，bbox_inches='tight'会自动裁剪空白边缘
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fig.savefig(output_path, dpi=300, bbox_inches='tight', pad_inches=0.1)
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plt.close(fig)
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print("\n操作成功！")
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print(f"PDF 文件已保存到: '{output_path}'")
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except IOError:
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print(f"错误: 无法读取文件: '{input_path}'")
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except Exception as e:
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print(f"处理并转换 DXF 文件时发生未知错误: {e}")
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if __name__ == "__main__":
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dxf_to_pdf(INPUT_DXF_PATH, OUTPUT_PDF_PATH)
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