fc79d59e53
This commit introduces two new feature scripts to the Aspose_CAD_Python project: - print_cad_to_pdf.py: A script to export CAD drawings to PDF format, providing a direct way to generate printable documents. - step1_find_block_coordinates.py: A utility to find and list the coordinates of specific blocks within a CAD file, which is a crucial first step for automated plotting and data extraction. Additionally, relevant documentation in .specstory has been added to reflect these new capabilities.
95 lines
3.5 KiB
Python
95 lines
3.5 KiB
Python
import aspose.cad as cad
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import os
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import argparse
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def find_shx_files(fonts_dir):
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"""Finds all .shx files in a directory."""
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shx_files = []
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for root, _, files in os.walk(fonts_dir):
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for file in files:
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if file.lower().endswith('.shx'):
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shx_files.append(os.path.join(root, file))
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return shx_files
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def print_cad_to_pdf(input_dwg, output_pdf, fonts_dir):
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"""
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Converts a CAD drawing (DWG) to a PDF file, using specified custom fonts.
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:param input_dwg: Path to the input DWG file.
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:param output_pdf: Path to save the output PDF file.
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:param fonts_dir: Directory containing custom SHX fonts.
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"""
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print(f"Input DWG: {input_dwg}")
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print(f"Output PDF: {output_pdf}")
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print(f"Fonts directory: {fonts_dir}")
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# Load the DWG file
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try:
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image = cad.Image.load(input_dwg)
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print("Successfully loaded DWG file.")
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except Exception as e:
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print(f"Error loading DWG file: {e}")
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return
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# Create an instance of CadRasterizationOptions
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rasterization_options = cad.imageoptions.CadRasterizationOptions()
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# Set page size to match drawing size and disable scaling to preserve coordinates
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rasterization_options.no_scaling = True
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rasterization_options.page_width = float(image.width)
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rasterization_options.page_height = float(image.height)
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rasterization_options.layouts = ["Model"]
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# Set to color mode. 1 corresponds to USE_OBJECT_COLOR.
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# We use the integer value directly as the enum type is not exposed in a public module.
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rasterization_options.draw_type = 1
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# Find and set SHX fonts
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shx_font_files = find_shx_files(fonts_dir)
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if shx_font_files:
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print(f"Found {len(shx_font_files)} SHX font files.")
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rasterization_options.shx_fonts = shx_font_files
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else:
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print("Warning: No SHX font files found in the specified directory.")
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# Create an instance of PdfOptions
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pdf_options = cad.imageoptions.PdfOptions()
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pdf_options.vector_rasterization_options = rasterization_options
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# Save the PDF
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try:
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image.save(output_pdf, pdf_options)
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print(f"Successfully converted to PDF: {output_pdf}")
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except Exception as e:
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print(f"Error saving PDF file: {e}")
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finally:
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# Dispose image - The python wrapper seems to handle this automatically.
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# image.dispose()
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print("Image resources are managed automatically.")
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(description="Convert CAD drawing to PDF with custom fonts.")
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parser.add_argument("input_file", help="Path to the input CAD file (e.g., DWG, DXF).")
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args = parser.parse_args()
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input_file_path = args.input_file
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# Define other paths
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workspace_root = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
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fonts_folder_path = os.path.join(workspace_root, '03_Python_OpenSource_DXF', 'fonts')
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# Generate output file path based on input file name
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base_name = os.path.basename(input_file_path)
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file_name, _ = os.path.splitext(base_name)
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output_file_path = os.path.join(os.path.dirname(__file__), f'{file_name}_output.pdf')
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# Check if files/folders exist
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if not os.path.exists(input_file_path):
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print(f"Error: Input file not found at {input_file_path}")
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elif not os.path.isdir(fonts_folder_path):
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print(f"Error: Fonts directory not found at {fonts_folder_path}")
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else:
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print_cad_to_pdf(input_file_path, output_file_path, fonts_folder_path)
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