Posts tagged scripting

Python Scripting with Alibre Design

Apr 3rd

Posted by Andy in 3D Printing

4 comments

ADScript makes it easy to use Alibre Design with Python scripting. For example creating a new part:

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Test = Part("Test")

We can get access to planes in the design workspace, for example:

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XYPlane = Test.GetPlane("XY-Plane")

Once we have a part and plane we can create a sketch on the plane:

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MySketch = Test.AddSketch("MySketch", XYPlane)

Adding to the sketch is easy:

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MySketch.AddCircle(0, 0, 10, False)

Now we can extrude it:

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Object = Test.AddExtrudeBoss("Object", MySketch, 5, False)

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Python CAD Scripting

Jun 24th

Posted by Andy in 3D Printing

FreeCAD supports Python as a scripting language which allows the creation of 3D parts based on variables. This is great for building libraries which support customizable part creation.

As a first attempt I created the following test script. When executed in FreeCAD 0.13 it creates a rod 10mm x 10mm x 50mm with a notch in it. It then removes a cube measuring 4mm x 4mm x 4mm from one end.

Here is what the hierarchy looks like:

And here is the script:

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import FreeCAD, FreeCADGui, Part
 
App = FreeCAD
 
doc = App.activeDocument()
 
rodbasepts = list()
rodbasepts.append(App.Vector(0, 0, 0))
rodbasepts.append(App.Vector(0, 10, 0))
rodbasepts.append(App.Vector(10, 10, 0))
rodbasepts.append(App.Vector(10, 0, 0))
rodbasepts.append(App.Vector(6, 0, 0))
rodbasepts.append(App.Vector(6, 2, 0))
rodbasepts.append(App.Vector(4, 2, 0))
rodbasepts.append(App.Vector(4, 0, 0))
rodbasepts.append(App.Vector(0, 0, 0))
rodbase = Part.makePolygon(rodbasepts)
rodbasefilled = Part.Face(rodbase)
rod = rodbasefilled.extrude(App.Vector(0, 0, 50))
#rod.Placement = App.Placement(App.Vector(10, 0, 0), App.Rotation(0, 0, 0, 1))
rodpart = doc.addObject("Part::Feature", "rod")
rodpart.Shape = rod
 
cubebasepts = list()
cubebasepts.append(App.Vector(0, 0, 0))
cubebasepts.append(App.Vector(0, 4, 0))
cubebasepts.append(App.Vector(4, 4, 0))
cubebasepts.append(App.Vector(4, 0, 0))
cubebasepts.append(App.Vector(0, 0, 0))
cubebase = Part.makePolygon(cubebasepts)
cubebasefilled = Part.Face(cubebase)
cube = cubebasefilled.extrude(App.Vector(0, 0, 4))
cubepart = doc.addObject("Part::Feature", "cube")
cubepart.Shape = cube
 
cut = doc.addObject("Part::Cut", 'Rod minus cube')
cut.Base = rodpart
cut.Tool = cubepart
rodpart.ViewObject.hide()
cubepart.ViewObject.hide()
doc.recompute()

To use create a new Part and then copy and paste the script into the Python Console inside FreeCAD.

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