Drawing Documentation

This page documents jcc242's understanding of the Drawing module. It includes files and features that he is currently working on and may not yet be in the master branch. The source for those files is on his Github, but be careful as that is very unstable!

gdtsvg.py
Python script that generates svg snippets for things such as gd&t symbols, dimension symbols, and basic svg elements such as lines, circles, and paths.

It has several support files that don't really do much. Run DrawingTest.py to create a bunch of svg icons in the icon directory that previews various icons in the gdtsvg.py file. settingslist.py and dimesettings, and convert.py are all deprecated from older settings methods and should probably be removed as the Drawing branch approaches merging into master.

DrawingAlgos.py
Creates svg lines from a list of vertices, supports both hidden and visible edges. Should probably be merged with gdtsvg.py as that file matures.

createSVG
Accepts part as an argument, projects the part into lines from the Drawing.project object and then draws creates the svg for each line.

App
Contains the backend side of the drawing module.

AppDrawing.cpp
Initializes the various namespaces and modules and stuff used in the drawing module. Will throw an error if it cannot load the Part module.

DrawingExport.cpp
Two classes: SVGOutput and DXFOutput. They both contain methods to put out the code in their respective language. Typically require an object of the appropriate typedef, and sometimes some additional identifier information.

FeatureClip.cpp
Callback (?) methods for the feature clipping gui, so it would seem. Called alone it will create the clip path, if ShowFrame.getValue is TRUE set it will show the frame border as well.

FeaturePage.cpp
Manages the views. onChanged for doing stuff when properties get changed. execute for recalculating a feature view, or so it claims. It seems to have stuff for checking for editable texts and saving drawings. Need to investigate further. getEditableTextsFromTemplate for retrieving text that can be edited by FreeCAD from an SVG file.

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