This is a tool that helps dissect the information in CGM vector graphics files.
This can be used programmatically for more advanced uses, or for basic printing of the elements of a CGM file there is a command line tool provided:
$ parse_cgm <file>
Or to print only the metadata/application data (i.e. non-graphics) parts of a cgm file:
$ parse_cgm -m <file>
The CGM standard can be downloaded for free from from iso.org. Search
for ISO/IEC 8632 on the publicly available standards page:
https://standards.iso.org/ittf/PubliclyAvailableStandards/index.html.
There is a utility script that was used to extract information about the CGM standard. This shouldn't be needed anymore but is here so I don't lose it and then need to re-scrape information from the CGM standard again.
./utils/make_cgm_types.py docs/c032380e.pdf cgm/types/parsed_types.py
This script requires installing tabula-py. The makefile target
scrape-standard automatically creates and uses a virtualenv to install tabula
and run the script.
However the data scraped from the docs/c032380e.pdf PDF seems to be missing
the EDGE_WIDTH element in one of the tables so the following element was
patched in after running the script:
diff --git a/cgm/types/parsed_types.py b/cgm/types/parsed_types.py
index bff3e20..1482b42 100644
--- a/cgm/types/parsed_types.py
+++ b/cgm/types/parsed_types.py
@@ -1712,6 +1712,14 @@
"len": "BIX",
"range": "IXR"
},
+ # 28 was manually added because the PDF is missing it?
+ 28: {
+ "element": "EDGE_WIDTH",
+ "id": 28,
+ "type": "SS",
+ "len": "BSS",
+ "range": "SSR"
+ },
29: {
"element": "EDGE_COLOUR",
"id": 29,