Export drawing sheets of FreeCAD into PDF and SVG format from Python console – Done

Finally, I found the answer that how to save the drawing sheets in FreeCAD from Python console. In FreeCAD, whenever we created a new drawing sheet its get stored as temporary file in our system. The below code is used to find the location of the drawing from Python console:

import os
import subprocess

obj = App.ActiveDocument.getObject("Page")
page = getattr(obj, 'PageResult')

The page variable stored the location of the drawing sheet in SVG format.

Converting SVG format to PDF format by using Inkscape:

import os
import subprocess

obj = App.ActiveDocument.getObject("Page")

# Path to Inkscape executable
inkscape_path = "/usr/bin/inkscape"

# Exported PDF file location
file_location = os.path.expanduser("~" + os.sep + obj.Label + ".pdf")

page = getattr(obj, 'PageResult')
call_inkscape = [inkscape_path, "-f", obj.PageResult, "-A", file_location]
subprocess.call(call_inkscape)

Macro for making a drawing of the building in FreeCAD

Today, I make a macro which automates the drawing of the building on drawing sheet. Here is the code of macro.

obj_list = FreeCAD.ActiveDocument.Objects                                      
App.activeDocument().addObject("Part::Compound","Compound")             
App.activeDocument().Compound.Links = obj_list                                 
                                                                        
App.ActiveDocument.addObject('Drawing::FeaturePage','Page')             
App.ActiveDocument.Page.Template = App.getResourceDir()+'Mod/Drawing/Templates/A3_Landscape.svg'
                                                                        
App.ActiveDocument.addObject('Drawing::FeatureViewPart','View')         
App.ActiveDocument.View.Source = App.ActiveDocument.Compound            
App.ActiveDocument.View.Direction = (0.0,0.0,1.0)                       
App.ActiveDocument.View.X = 30.0                                        
App.ActiveDocument.View.Y = 100.0                                       
App.ActiveDocument.View.ShowHiddenLines = False                         
App.ActiveDocument.View.Scale = 2.0                                     
App.ActiveDocument.Page.addObject(App.ActiveDocument.View)                                                        
                                                                        
App.ActiveDocument.addObject('Drawing::FeatureViewPart','ViewIso')      
App.ActiveDocument.ViewIso.Source = App.ActiveDocument.Compound         
App.ActiveDocument.ViewIso.Direction = (1, 1, 1)                        
App.ActiveDocument.ViewIso.X = 335.0                                    
App.ActiveDocument.ViewIso.Y = 60.0                                     
App.ActiveDocument.ViewIso.ShowHiddenLines = True                       
App.ActiveDocument.ViewIso.Rotation = 120                               
App.ActiveDocument.ViewIso.Scale = 2.0                                  
App.ActiveDocument.Page.addObject(App.ActiveDocument.ViewIso)           
App.ActiveDocument.recompute()                                          

Output when you run the above macro:
Drawing of building

Source code:
https://github.com/amrit3701/Drawing-FreeCAD/blob/master/macro_building_drawing.py

Draw whole building on drawing paper – Done

The last two-three days I stuck to drew the drawing of whole building because at present FreeCAD have not the capability for recording everything in a macro because some code is written in C++ and in Python.
After struggling, today I discussed my problem with sir and he gave me many ideas that how I can overcome this problem.

I also chat on IRC of FreeCAD channel and discuss my problem with Yorik that how to draw the drawing of the whole building through Python console. I was using fuse function of FreeCAD in ‘Part’ workbench and he told me not to use fuse function. He told to use Part MakeCompound tool and which was solved my problem. He also told that compound is much, much faster and corrected than fusing.

In python use Part.makeCompound( [list of shapes] )

FreeCAD Drawing module

Today, I tried to elaborate that is FreeCAD capable of converting 3D drawing to 2D and at the end of the day I said that FreeCAD fully capable of converting 3D drawing to 2D drawing by using Drawing module.

The Drawing module allows you to put your 3D work on paper. That is, to put views of your models in a 2D window and to insert that window in a drawing, for example a sheet with a border, a title and your logo and finally print that sheet. The Drawing module is currently under construction and more or less a technology preview!

When I copy paste the code present onĀ http://www.freecadweb.org/wiki/index.php?title=Drawing_Module it gave the below output.

The below is updated code:

# First of all you need the Part and the Drawing module
import FreeCAD, Part, Drawing

# Create a small sample part
Part.show(Part.makeBox(100,100,100).cut(Part.makeCylinder(80,100)).cut(Part.makeBox(90,40,100)).cut(Part.makeBox(20,85,100)))

# Direct projection. The G0 means hard edge, the G1 is tangent continuous.
Shape = App.ActiveDocument.Shape.Shape
[visibleG0,visibleG1,hiddenG0,hiddenG1] = Drawing.project(Shape)
print "visible edges:", len(visibleG0.Edges)
print "hidden edges:", len(hiddenG0.Edges)

# Everything was projected on the Z-plane:
print "Bnd Box shape: X=",Shape.BoundBox.XLength," Y=",Shape.BoundBox.YLength," Z=",Shape.BoundBox.ZLength
print "Bnd Box project: X=",visibleG0.BoundBox.XLength," Y=",visibleG0.BoundBox.YLength," Z=",visibleG0.BoundBox.ZLength

# Different projection vector
[visibleG0,visibleG1,hiddenG0,hiddenG1] = Drawing.project(Shape,App.Vector(1,1,1))

# Project to SVG
resultSVG = Drawing.projectToSVG(Shape,App.Vector(1,1,1))
print resultSVG

# Create the body
App.ActiveDocument.addObject("Part::Box","Box")
App.ActiveDocument.Box.Length=100.00
App.ActiveDocument.Box.Width=100.00
App.ActiveDocument.Box.Height=100.00
 
App.ActiveDocument.addObject("Part::Box","Box1")
App.ActiveDocument.Box1.Length=90.00
App.ActiveDocument.Box1.Width=40.00
App.ActiveDocument.Box1.Height=100.00
 
App.ActiveDocument.addObject("Part::Box","Box2")
App.ActiveDocument.Box2.Length=20.00
App.ActiveDocument.Box2.Width=85.00
App.ActiveDocument.Box2.Height=100.00
 
App.ActiveDocument.addObject("Part::Cylinder","Cylinder")
App.ActiveDocument.Cylinder.Radius=80.00
App.ActiveDocument.Cylinder.Height=100.00
App.ActiveDocument.Cylinder.Angle=360.00
# Fuse two boxes and the cylinder
App.ActiveDocument.addObject("Part::Fuse","Fusion")
App.ActiveDocument.Fusion.Base = App.ActiveDocument.Cylinder
App.ActiveDocument.Fusion.Tool = App.ActiveDocument.Box1
 
App.ActiveDocument.addObject("Part::Fuse","Fusion1")
App.ActiveDocument.Fusion1.Base = App.ActiveDocument.Box2
App.ActiveDocument.Fusion1.Tool = App.ActiveDocument.Fusion
# Cut the fused shapes from the first box
App.ActiveDocument.addObject("Part::Cut","Shape")
App.ActiveDocument.Shape.Base = App.ActiveDocument.Box 
App.ActiveDocument.Shape.Tool = App.ActiveDocument.Fusion1
# Hide all the intermediate shapes 
Gui.ActiveDocument.Box.Visibility=False
Gui.ActiveDocument.Box1.Visibility=False
Gui.ActiveDocument.Box2.Visibility=False
Gui.ActiveDocument.Cylinder.Visibility=False
Gui.ActiveDocument.Fusion.Visibility=False
Gui.ActiveDocument.Fusion1.Visibility=False

# Insert a Page object and assign a template
App.ActiveDocument.addObject('Drawing::FeaturePage','Page')
App.ActiveDocument.Page.Template = App.getResourceDir()+'Mod/Drawing/Templates/A3_Landscape.svg'

# Create a view on the "Shape" object, define the position and scale and assign it to a Page
App.ActiveDocument.addObject('Drawing::FeatureViewPart','View')
App.ActiveDocument.View.Source = App.ActiveDocument.Shape
App.ActiveDocument.View.Direction = (0.0,0.0,1.0)
App.ActiveDocument.View.X = 10.0
App.ActiveDocument.View.Y = 10.0
App.ActiveDocument.Page.addObject(App.ActiveDocument.View)


# Create a second view on the same object but this time the view will be rotated by 90 degrees.
App.ActiveDocument.addObject('Drawing::FeatureViewPart','ViewRot')
App.ActiveDocument.ViewRot.Source = App.ActiveDocument.Shape
App.ActiveDocument.ViewRot.Direction = (0.0,0.0,1.0)
App.ActiveDocument.ViewRot.X = 80.0
App.ActiveDocument.ViewRot.Y = 100.0
App.ActiveDocument.ViewRot.Scale = 1.0
App.ActiveDocument.ViewRot.Rotation = 90.0
App.ActiveDocument.Page.addObject(App.ActiveDocument.ViewRot)


# Create a third view on the same object but with an isometric view direction. The hidden lines are activated too.
App.ActiveDocument.addObject('Drawing::FeatureViewPart','ViewIso')
App.ActiveDocument.ViewIso.Source = App.ActiveDocument.Shape
App.ActiveDocument.ViewIso.Direction = (1.0,1.0,1.0)
App.ActiveDocument.ViewIso.X = 335.0
App.ActiveDocument.ViewIso.Y = 140.0
App.ActiveDocument.ViewIso.ShowHiddenLines = True
App.ActiveDocument.Page.addObject(App.ActiveDocument.ViewIso)


# Change something and update. The update process changes the view and the page.
App.ActiveDocument.View.X = 160.0
App.ActiveDocument.View.Y = 140.0
App.ActiveDocument.View.Scale = 1.0
App.ActiveDocument.recompute()

# Get the SVG fragment of a single view
ViewSVG = App.ActiveDocument.View.ViewResult
print ViewSVG

print "Resulting SVG document: ",App.ActiveDocument.Page.PageResult
file = open(App.ActiveDocument.Page.PageResult,"r")
print "Result page is ",len(file.readlines())," lines long"

del file

# Insert a view with your content
App.ActiveDocument.addObject('Drawing::FeatureView','ViewSelf')
App.ActiveDocument.ViewSelf.ViewResult = """
 
  
  """
App.ActiveDocument.Page.addObject(App.ActiveDocument.ViewSelf)
App.ActiveDocument.recompute()
 
del ViewSVG

By running the above code we have two outputs. First is 3D design of the object.

Second is the image which is converted by using Drawing module in FreeCAD.

However, I understand the code little bit and changed the code little bit because positions of object on the drawing was not very good and they overlap with eachother.

http://www.freecadweb.org/wiki/index.php?title=Drawing_Module

There are many templates of drawing sheet present in FreeCAD are
http://www.freecadweb.org/wiki/index.php?title=Drawing_templates