def buildWire(sketch, zBottom, width, faceOverride=None, offset=0.0):
"""Given a line segment, build a nanowire of given cross-sectional width
with a bottom location at zBottom. Offset produces an offset with a specified
offset.
"""
doc = FreeCAD.ActiveDocument
if faceOverride is None:
face = makeHexFace(sketch, zBottom - offset, width + 2 * offset)
else:
face = faceOverride
sketchForSweep = extendSketch(sketch, offset)
mySweepTemp = doc.addObject("Part::Sweep", sketch.Name + "_wire")
mySweepTemp.Sections = [face]
mySweepTemp.Spine = sketchForSweep
mySweepTemp.Solid = True
doc.recompute()
mySweep = copy_move(mySweepTemp)
deepRemove(mySweepTemp)
return mySweep
def buildAlShell(sketch,
zBottom,
width,
verts,
thickness,
depoZone=None,
etchZone=None,
offset=0.0):
"""Builds a shell on a nanowire parameterized by sketch, zBottom, and width.
Here, verts describes the vertices that are covered, and thickness describes
the thickness of the shell. depoZone, if given, is extruded and intersected
with the shell (for an etch). Note that offset here *is not* a real offset -
for simplicity we keep this a thin shell that lies cleanly on top of the
bigger wire offset. There's no need to include the bottom portion since that's
already taken up by the wire.
Parameters
----------
sketch :
zBottom :
width :
verts :
thickness :
depoZone :
(Default value = None)
etchZone :
(Default value = None)
offset :
(Default value = 0.0)
Returns
-------
"""
lineSegments = findSegments(sketch)[0]
x0, y0, z0 = lineSegments[0]
x1, y1, z1 = lineSegments[1]
dx = x1 - x0
dy = y1 - y0
rAxis = np.array([-dy, dx, 0])
# axis perpendicular to the wire in the xy plane
rAxis /= np.sqrt(np.sum(rAxis**2))
zAxis = np.array([0, 0, 1.0])
doc = FreeCAD.ActiveDocument
shellList = []
for vert in verts:
# Make the original wire (including an offset if applicable)
originalWire = buildWire(sketch, zBottom, width, offset=offset)
# Now make the shifted wire:
angle = vert * np.pi / 3.0
dirVec = rAxis * np.cos(angle) + zAxis * np.sin(angle)
shiftVec = (thickness) * dirVec
transVec = FreeCAD.Vector(tuple(shiftVec))
face = makeHexFace(sketch, zBottom - offset,
width + 2 * offset) # make the bigger face
shiftedFace = Draft.move(face, transVec, copy=False)
extendedSketch = extendSketch(sketch, offset)
# The shell offset is handled manually since we are using faceOverride to
# input a shifted starting face:
shiftedWire = buildWire(extendedSketch,
zBottom,
width,
faceOverride=shiftedFace)
delete(extendedSketch)
shellCut = doc.addObject("Part::Cut", f"{sketch.Name}_cut_{vert}")
shellCut.Base = shiftedWire
shellCut.Tool = originalWire
doc.recompute()
shell = Draft.move(shellCut, FreeCAD.Vector(0.0, 0.0, 0.0), copy=True)
doc.recompute()
delete(shellCut)
delete(originalWire)
delete(shiftedWire)
shellList.append(shell)
if len(shellList) > 1:
coatingUnion = doc.addObject("Part::MultiFuse",
f"{sketch.Name}_coating")
coatingUnion.Shapes = shellList
doc.recompute()
coatingUnionClone = copy_move(coatingUnion)
doc.removeObject(coatingUnion.Name)
for shell in shellList:
doc.removeObject(shell.Name)
elif len(shellList) == 1:
coatingUnionClone = shellList[0]
else:
raise NameError(
"Trying to build an empty Al shell. If no shell is desired, omit the AlVerts key from "
"the json.")
if (depoZone is None) and (etchZone is None):
return coatingUnionClone
elif depoZone is not None:
coatingBB = getBB(coatingUnionClone)
zMin = coatingBB[4]
zMax = coatingBB[5]
depoVol = extrudeBetween(depoZone, zMin, zMax)
etchedCoatingUnionClone = intersect(
[depoVol, coatingUnionClone],
consumeInputs=True if not DBG_OUT else False)
return etchedCoatingUnionClone
else: # etchZone instead
coatingBB = getBB(coatingUnionClone)
zMin = coatingBB[4]
zMax = coatingBB[5]
etchVol = extrudeBetween(etchZone, zMin, zMax)
etchedCoatingUnionClone = subtract(
coatingUnionClone,
etchVol,
consumeInputs=True if not DBG_OUT else False)
return etchedCoatingUnionClone
