def getGeometryOutput(derivation, elementNode): "Get vector3 vertexes from attribute dictionary." if derivation is None: derivation = SpongeSliceDerivation(elementNode) awayPoints = [] vector3Path = euclidean.getVector3Path(euclidean.getSquareLoopWiddershins(-derivation.inradius, derivation.inradius)) geometryOutput = lineation.SideLoop(vector3Path).getManipulationPluginLoops(elementNode) minimumDistanceFromOther = derivation.wallThickness + derivation.minimumRadius + derivation.minimumRadius if derivation.inradiusMinusRadiusThickness.real <= 0.0 or derivation.inradiusMinusRadiusThickness.imag <= 0.0: return geometryOutput for point in derivation.path: if abs(point.x) <= derivation.inradiusMinusRadiusThickness.real and abs(point.y) <= derivation.inradiusMinusRadiusThickness.imag: awayPoints.append(point) awayCircles = [] for point in awayPoints: if getIsPointAway(minimumDistanceFromOther, point, awayCircles): awayCircles.append(SpongeCircle(point, derivation.minimumRadius)) averagePotentialBubbleArea = derivation.potentialBubbleArea / float(len(awayCircles)) averageBubbleRadius = math.sqrt(averagePotentialBubbleArea / math.pi) - 0.5 * derivation.wallThickness sides = -4 * (max(evaluate.getSidesBasedOnPrecision(elementNode, averageBubbleRadius), 4) / 4) sideAngle = math.pi / sides cosSide = math.cos(sideAngle) overlapArealRatio = (1 - cosSide) / cosSide for circleIndex, circle in enumerate(awayCircles): otherCircles = awayCircles[: circleIndex] + awayCircles[circleIndex + 1 :] circle.radius = circle.getRadius(circle.center, derivation, otherCircles, overlapArealRatio) if derivation.searchAttempts > 0: for circleIndex, circle in enumerate(awayCircles): otherCircles = awayCircles[: circleIndex] + awayCircles[circleIndex + 1 :] circle.moveCircle(derivation, otherCircles, overlapArealRatio) for circle in awayCircles: vector3Path = euclidean.getVector3Path(euclidean.getComplexPolygon(circle.center.dropAxis(), circle.radius, sides, sideAngle)) geometryOutput += lineation.SideLoop(vector3Path).getManipulationPluginLoops(elementNode) return geometryOutput
def getLighteningHoles(gearDerivation, pitchRadius, shaftRimRadius, teeth): 'Get cutout circles.' innerRadius = pitchRadius - gearDerivation.dedendum lighteningHoleOuterRadius = innerRadius - gearDerivation.rimWidth shaftRimRadius = max(shaftRimRadius, (lighteningHoleOuterRadius) * (0.5 - math.sqrt(0.1875))) lighteningHoleRadius = 0.5 * (lighteningHoleOuterRadius - shaftRimRadius) if lighteningHoleRadius < gearDerivation.lighteningHoleMinimumRadius: return [] lighteningHoles = [] numberOfLighteningHoles = 3 polygonRadius = lighteningHoleOuterRadius - lighteningHoleRadius rimDemiwidth = 0.5 * gearDerivation.lighteningHoleMargin axialMargin = getAxialMargin(lighteningHoleRadius, numberOfLighteningHoles, polygonRadius) if axialMargin < rimDemiwidth: while axialMargin < rimDemiwidth: lighteningHoleRadius *= 0.999 if lighteningHoleRadius < gearDerivation.lighteningHoleMinimumRadius: return [] axialMargin = getAxialMargin(lighteningHoleRadius, numberOfLighteningHoles, polygonRadius) else: newNumberOfLighteningHoles = numberOfLighteningHoles while axialMargin > rimDemiwidth: numberOfLighteningHoles = newNumberOfLighteningHoles newNumberOfLighteningHoles += 2 axialMargin = getAxialMargin(lighteningHoleRadius, newNumberOfLighteningHoles, polygonRadius) sideAngle = 2.0 * math.pi / float(numberOfLighteningHoles) startAngle = 0.0 for lighteningHoleIndex in xrange(numberOfLighteningHoles): unitPolar = euclidean.getWiddershinsUnitPolar(startAngle) lighteningHole = euclidean.getComplexPolygon(unitPolar * polygonRadius, lighteningHoleRadius, -13) lighteningHoles.append(lighteningHole) startAngle += sideAngle return euclidean.getVector3Paths(lighteningHoles)
def addCollarShaftSetDerivation(collarDerivation, collarThickness, derivation, negatives, positives, xmlElement): 'Add collar and shaft.' collarSides = evaluate.getSidesMinimumThreeBasedOnPrecision(derivation.shaftRimRadius, xmlElement) collarProfile = euclidean.getComplexPolygon(complex(), derivation.shaftRimRadius, collarSides) vector3CollarProfile = euclidean.getVector3Path(collarProfile) extrude.addNegativesPositives(collarDerivation, negatives, [vector3CollarProfile], positives) addShaft(derivation, negatives, positives) drillZ = derivation.pinionThickness + 0.5 * collarThickness drillEnd = Vector3(0.0, derivation.shaftRimRadius, drillZ) drillStart = Vector3(0.0, 0.0, drillZ) teardrop.addNegativesByRadius(drillEnd, negatives, derivation.keywayRadius, drillStart, xmlElement)
def getLighteningHoles(gearDerivation, pitchRadius, shaftRimRadius, teeth):
'Get cutout circles.'
innerRadius = pitchRadius - gearDerivation.dedendum
lighteningHoleOuterRadius = innerRadius - gearDerivation.rimWidth
shaftRimRadius = max(shaftRimRadius, (lighteningHoleOuterRadius) *
(0.5 - math.sqrt(0.1875)))
lighteningHoleRadius = 0.5 * (lighteningHoleOuterRadius - shaftRimRadius)
if lighteningHoleRadius < gearDerivation.lighteningHoleMinimumRadius:
return []
lighteningHoles = []
numberOfLighteningHoles = 3
polygonRadius = lighteningHoleOuterRadius - lighteningHoleRadius
rimDemiwidth = 0.5 * gearDerivation.lighteningHoleMargin
axialMargin = getAxialMargin(lighteningHoleRadius, numberOfLighteningHoles,
polygonRadius)
if axialMargin < rimDemiwidth:
while axialMargin < rimDemiwidth:
lighteningHoleRadius *= 0.999
if lighteningHoleRadius < gearDerivation.lighteningHoleMinimumRadius:
return []
axialMargin = getAxialMargin(lighteningHoleRadius,
numberOfLighteningHoles,
polygonRadius)
else:
newNumberOfLighteningHoles = numberOfLighteningHoles
while axialMargin > rimDemiwidth:
numberOfLighteningHoles = newNumberOfLighteningHoles
newNumberOfLighteningHoles += 2
axialMargin = getAxialMargin(lighteningHoleRadius,
newNumberOfLighteningHoles,
polygonRadius)
sideAngle = 2.0 * math.pi / float(numberOfLighteningHoles)
startAngle = 0.0
for lighteningHoleIndex in xrange(numberOfLighteningHoles):
unitPolar = euclidean.getWiddershinsUnitPolar(startAngle)
lighteningHole = euclidean.getComplexPolygon(unitPolar * polygonRadius,
lighteningHoleRadius, -13)
lighteningHoles.append(lighteningHole)
startAngle += sideAngle
return euclidean.getVector3Paths(lighteningHoles)
def getGearProfileAnnulus(derivation, pitchRadius, teeth, toothProfile): 'Get gear profile for an annulus gear.' gearProfileCylinder = getGearProfileCylinder(teeth, toothProfile) annulusRadius = derivation.dedendum + derivation.rimWidth - pitchRadius return [euclidean.getComplexPolygon(complex(), annulusRadius, -teeth, 0.5 * math.pi), gearProfileCylinder]
def addRackHole(derivation, vector3RackProfiles, x, xmlElement): "Add rack hole to vector3RackProfiles." rackHole = euclidean.getComplexPolygon(complex(x, -derivation.rackHoleBelow), derivation.rackHoleRadius, -13) vector3RackProfiles.append(euclidean.getVector3Path(rackHole))
