def __init__(self, elementNode): 'Set defaults.' self.axisEnd = evaluate.getVector3ByPrefix(None, elementNode, 'axisEnd') self.axisStart = evaluate.getVector3ByPrefix(None, elementNode, 'axisStart') self.end = evaluate.getEvaluatedFloat(360.0, elementNode, 'end') self.loop = evaluate.getTransformedPathByKey([], elementNode, 'loop') self.sides = evaluate.getEvaluatedInt(None, elementNode, 'sides') self.start = evaluate.getEvaluatedFloat(0.0, elementNode, 'start') self.target = evaluate.getTransformedPathsByKey([], elementNode, 'target') if len(self.target) < 1: print('Warning, no target in derive in lathe for:') print(elementNode) return firstPath = self.target[0] if len(firstPath) < 3: print('Warning, firstPath length is less than three in derive in lathe for:') print(elementNode) self.target = [] return if self.axisStart == None: if self.axisEnd == None: self.axisStart = firstPath[0] self.axisEnd = firstPath[-1] else: self.axisStart = Vector3() self.axis = self.axisEnd - self.axisStart axisLength = abs(self.axis) if axisLength <= 0.0: print('Warning, axisLength is zero in derive in lathe for:') print(elementNode) self.target = [] return self.axis /= axisLength firstVector3 = firstPath[1] - self.axisStart firstVector3Length = abs(firstVector3) if firstVector3Length <= 0.0: print('Warning, firstVector3Length is zero in derive in lathe for:') print(elementNode) self.target = [] return firstVector3 /= firstVector3Length self.axisProjectiveSpace = euclidean.ProjectiveSpace().getByBasisZFirst(self.axis, firstVector3) if self.sides == None: distanceToLine = euclidean.getDistanceToLineByPaths(self.axisStart, self.axisEnd, self.target) self.sides = evaluate.getSidesMinimumThreeBasedOnPrecisionSides(elementNode, distanceToLine) endRadian = math.radians(self.end) startRadian = math.radians(self.start) self.isEndCloseToStart = euclidean.getIsRadianClose(endRadian, startRadian) if len(self.loop) < 1: self.loop = euclidean.getComplexPolygonByStartEnd(endRadian, 1.0, self.sides, startRadian) self.normal = euclidean.getNormalByPath(firstPath)