def getShaftPath(depthBottom, depthTop, radius, sides):
'Get shaft with the option of a flat on the top and/or bottom.'
if radius <= 0.0:
return []
sideAngle = 2.0 * math.pi / float(abs(sides))
startAngle = 0.5 * sideAngle
endAngle = math.pi - 0.1 * sideAngle
shaftProfile = []
while startAngle < endAngle:
unitPolar = euclidean.getWiddershinsUnitPolar(startAngle)
shaftProfile.append(unitPolar * radius)
startAngle += sideAngle
if abs(sides) % 2 == 1:
shaftProfile.append(complex(-radius, 0.0))
horizontalBegin = radius - depthTop
horizontalEnd = depthBottom - radius
shaftProfile = euclidean.getHorizontallyBoundedPath(
horizontalBegin, horizontalEnd, shaftProfile)
for shaftPointIndex, shaftPoint in enumerate(shaftProfile):
shaftProfile[shaftPointIndex] = complex(shaftPoint.imag,
shaftPoint.real)
shaftPath = euclidean.getVector3Path(euclidean.getMirrorPath(shaftProfile))
if sides > 0:
shaftPath.reverse()
return shaftPath
def getGearProfileRack(derivation, toothProfile):
'Get gear profile for rack.'
derivation.extraRackDemilength = 0.0
for complexPoint in derivation.helixPath:
derivation.extraRackDemilength = max(abs(derivation.helixThickness * complexPoint.imag), derivation.extraRackDemilength)
rackDemilengthPlus = derivation.rackDemilength
if derivation.pinionThickness > 0.0:
derivation.extraRackDemilength *= 1.1
rackDemilengthPlus += derivation.extraRackDemilength
teethRack = int(math.ceil(rackDemilengthPlus / derivation.wavelength))
gearProfile = []
for toothIndex in xrange(-teethRack, teethRack + 1):
translateComplex = complex(-toothIndex * derivation.wavelength, 0.0)
translatedPath = euclidean.getTranslatedComplexPath(toothProfile, translateComplex)
gearProfile += translatedPath
gearProfile = euclidean.getHorizontallyBoundedPath(rackDemilengthPlus, -rackDemilengthPlus, gearProfile)
firstPoint = gearProfile[0]
lastPoint = gearProfile[-1]
rackWidth = derivation.rackWidth
minimumRackWidth = 1.1 * derivation.dedendum
if rackWidth < minimumRackWidth:
rackWidth = minimumRackWidth
print('Warning, rackWidth is too small in getGearProfileRack in gear.')
print('RackWidth will be set to a bit more than the dedendum.')
gearProfile += [complex(lastPoint.real, -rackWidth),complex(firstPoint.real, -rackWidth)]
return gearProfile
def getShaftPath(depthBottom, depthTop, radius, sides): 'Get shaft with the option of a flat on the top and/or bottom.' if radius <= 0.0: return [] sideAngle = 2.0 * math.pi / float(abs(sides)) startAngle = 0.5 * sideAngle endAngle = math.pi - 0.1 * sideAngle shaftProfile = [] while startAngle < endAngle: unitPolar = euclidean.getWiddershinsUnitPolar(startAngle) shaftProfile.append(unitPolar * radius) startAngle += sideAngle if abs(sides) % 2 == 1: shaftProfile.append(complex(-radius, 0.0)) horizontalBegin = radius - depthTop horizontalEnd = depthBottom - radius shaftProfile = euclidean.getHorizontallyBoundedPath(horizontalBegin, horizontalEnd, shaftProfile) for shaftPointIndex, shaftPoint in enumerate(shaftProfile): shaftProfile[shaftPointIndex] = complex(shaftPoint.imag, shaftPoint.real) shaftPath = euclidean.getVector3Path(euclidean.getMirrorPath(shaftProfile)) if sides > 0: shaftPath.reverse() return shaftPath