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.
108 lines
4.5 KiB
Python
108 lines
4.5 KiB
Python
import aspose.cad as cad
|
|
import os
|
|
from aspose.cad.fileformats.cad import CadImage
|
|
from aspose.cad.fileformats.cad.cadobjects import CadInsertObject
|
|
|
|
def set_license():
|
|
"""
|
|
Tries to find and apply an Aspose.CAD license.
|
|
"""
|
|
try:
|
|
from aspose.cad import License
|
|
license = License()
|
|
# The SetLicense method expects the name of the license file.
|
|
# Common names are Aspose.CAD.lic or Aspose.Total.lic.
|
|
# It should be placed in the folder with the script, or you can specify a full path.
|
|
# As we don't have the license file, this will likely fail silently
|
|
# or work if the user has placed it correctly.
|
|
license.set_license("Aspose.CAD.lic")
|
|
print("License set successfully (if found).")
|
|
except Exception as e:
|
|
print(f"License not set or error: {e}. Running in evaluation mode.")
|
|
|
|
def find_block_coordinates(dwg_path, printable_blocks):
|
|
"""
|
|
Finds specified blocks in a DWG file and returns their coordinates and layout.
|
|
|
|
:param dwg_path: Path to the DWG file.
|
|
:param printable_blocks: A dictionary of block names to find.
|
|
:return: A list of dictionaries, each containing block info.
|
|
"""
|
|
if not os.path.exists(dwg_path):
|
|
print(f"Error: File not found at {dwg_path}")
|
|
return []
|
|
|
|
found_blocks = []
|
|
|
|
with cad.Image.load(dwg_path) as image:
|
|
# Based on the file `extract_lines_correct.py`, the correct object is returned directly.
|
|
# The issue might be specific to the environment or the DWG file itself.
|
|
# Let's use the exact loading method from the working example.
|
|
cad_image = cad.fileformats.cad.CadImage.load(dwg_path)
|
|
|
|
try:
|
|
print(f"Successfully loaded image. Type: {type(cad_image).__name__}")
|
|
|
|
# A DWG's paper space layouts are stored in blocks with names like "*Paper_Space"
|
|
# Model space is in "*Model_Space"
|
|
# We iterate through these special blocks to find the block insertions.
|
|
if hasattr(cad_image, 'blocks'):
|
|
print("Iterating through cad_image.blocks...")
|
|
for block in cad_image.blocks:
|
|
# Layout blocks often start with '*'
|
|
if block.name.startswith('*'):
|
|
layout_name = block.name
|
|
for entity in block.entities:
|
|
if isinstance(entity, CadInsertObject):
|
|
block_name = entity.name
|
|
if block_name in printable_blocks:
|
|
min_point = entity.min_point
|
|
max_point = entity.max_point
|
|
|
|
block_info = {
|
|
"block_name": block_name,
|
|
"layout": layout_name,
|
|
"min_point": (min_point.x, min_point.y),
|
|
"max_point": (max_point.x, max_point.y)
|
|
}
|
|
found_blocks.append(block_info)
|
|
print(f" Found block '{block_name}' in layout/block '{layout_name}'")
|
|
else:
|
|
print("Attribute 'blocks' not found on CadImage object.")
|
|
finally:
|
|
# Manually dispose of the image if CadImage.load was used
|
|
cad_image.dispose()
|
|
|
|
return found_blocks
|
|
|
|
if __name__ == "__main__":
|
|
# It's a good practice to set the license at the start of the application
|
|
set_license()
|
|
|
|
# Define the blocks we are interested in, based on 思路.MD
|
|
PRINTABLE_BLOCKS = {
|
|
"A$C2EB80DB8": ("A1", "portrait"),
|
|
"A$C1CC9093B": ("A1", "landscape"),
|
|
"A$C6D564680": ("A2", "portrait"),
|
|
"新块": ("A3", "landscape"),
|
|
"新块1": ("A4", "portrait"),
|
|
}
|
|
|
|
# Path to the test DWG file
|
|
dwg_file_path = os.path.join("04_Test_Files", "图签测试.dwg")
|
|
|
|
print(f"Loading DWG file: {dwg_file_path}")
|
|
|
|
blocks_data = find_block_coordinates(dwg_file_path, PRINTABLE_BLOCKS)
|
|
|
|
print("\n--- Found Blocks Summary ---")
|
|
if blocks_data:
|
|
for block in blocks_data:
|
|
print(f"Block: {block['block_name']}")
|
|
print(f" Layout: {block['layout']}")
|
|
print(f" Min Point: {block['min_point']}")
|
|
print(f" Max Point: {block['max_point']}")
|
|
print("-" * 20)
|
|
else:
|
|
print("No specified blocks were found in the DWG file.")
|