Hi, i am have a txt file with set of points, these points creating a closing curve. In result i need to create a solid body following the curve. In first step i am create a copies of curve and move they up and down. Next i create a surface by using a Loft function and at the last step i using Thikness function to create a solid. All curves are roughly similar but still have some differences. The curve must be on the surface of the solid and not inside (for creation Multi-Axis contour operation). For a while, everything worked well, but at some point, curves began to appear that cannot be oriented outward, the loft normals are oriented inward of the contour, this happens by chance and occurs in 1 out of 10 cases. This prevents me from automating the process. I do not understand why loft is turned inside out. I need your help. The only thing that helped me was to open the curve, but this creates a hole. I will attach my code that loads the curve and creates a solid.
def import_object(self, accuracy, factor, splitter, name_in_fusion):
self.name_in_fusion = name_in_fusion
with io.open(self.path + '\\' + self.name, 'r', encoding='utf-8-sig') as f:
points = adsk.core.ObjectCollection.create()
line = f.readline()
data = []
counter = 0
while line:
pntStrArr = line.split(splitter)
for pntStr in pntStrArr:
try:
data.append(float(pntStr))
except:
break
if len(data) >= 3 :
point = adsk.core.Point3D.create(data[0] * factor, data[1] * factor, data[2] * factor)
if counter == accuracy:
points.add(point)
counter = 0
else:
counter += 1
line = f.readline()
data.clear()
points.add(points.item(0))
if points.count:
sketch = root.sketches.add(root.xYConstructionPlane)
sketch.sketchCurves.sketchFittedSplines.add(points)
sketch.name = name_in_fusion
self.sketch = sketch
else:
ui.messageBox('No valid points', title)def create_surface(self, thickness, height, is_reverse):
if self.sketch == None:
ui.messageBox('The sketch does not exist!')
return
objs :adsk.core.ObjectCollection =
self.__get_sketch_all_entities(self.sketch)
cloneSketch_firstHalf = root.sketches.add(root.xYConstructionPlane)
cloneSketch_secondHalf =
root.sketches.add(root.xYConstructionPlane)
transform_firstHalf = adsk.core.Matrix3D.create()
transform_firstHalf.translation = set_vector3D(0, 0, height / 2)
transform_secondHalf = adsk.core.Matrix3D.create()
transform_secondHalf.translation = set_vector3D(0, 0, -height / 2)
self.sketch.copy(objs, transform_firstHalf, cloneSketch_firstHalf)
self.sketch.copy(objs, transform_secondHalf,
cloneSketch_secondHalf)
path_top = root.features.createPath(cloneSketch_firstHalf.sketchCurves[0])
path_bot = root.features.createPath(cloneSketch_secondHalf.sketchCurves[0])
loftFeats = root.features.loftFeatures
loftInput = loftFeats.createInput(adsk.fusion.FeatureOperations.NewBodyFeatureOperation)
loftSectionsObj = loftInput.loftSections
loftSectionsObj.add(path_bot)
loftSectionsObj.add(path_top)
loftInput.isSolid = True
loftFeat = loftFeats.add(loftInput)
cloneSketch_firstHalf.deleteMe()
cloneSketch_secondHalf.deleteMe()
thickenFeatures = root.features.thickenFeatures
inputSurfaces = adsk.core.ObjectCollection.create()
bodies = loftFeat.bodies
for body in bodies:
inputSurfaces.add(body)
thicknessSelf = adsk.core.ValueInput.createByReal(thickness)
thickenInput = thickenFeatures.createInput(inputSurfaces, thicknessSelf, False, adsk.fusion.FeatureOperations.NewBodyFeatureOperation)
thickenFeatures.add(thickenInput)
loftFeat.deleteMe()
