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Fixed crash when no transformation was provided in 3mf file

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Jaime van Kessel 2015-08-11 15:09:00 +02:00
parent cfe538c4b7
commit 102b2e7fa0
1 changed files with 49 additions and 45 deletions
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76
plugins/3MFReader/ThreeMFReader.py
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@ -50,54 +50,58 @@ class ThreeMFReader(MeshReader):
node.setSelectable(True) node.setSelectable(True)
# Magical python comprehension; looks for the matching transformation # Magical python comprehension; looks for the matching transformation
transformation = next((x for x in root.model.build.item if x["objectid"] == object["id"]), None) transformation = next((x for x in root.model.build.item if x["objectid"] == object["id"]), None)
splitted_transformation = transformation["transform"].split() if transformation["transform"]:
splitted_transformation = transformation["transform"].split()
## Transformation is saved as: ## Transformation is saved as:
## M00 M01 M02 0.0 ## M00 M01 M02 0.0
## M10 M11 M12 0.0 ## M10 M11 M12 0.0
## M20 M21 M22 0.0 ## M20 M21 M22 0.0
## M30 M31 M32 1.0 ## M30 M31 M32 1.0
## We switch the row & cols as that is how everyone else uses matrices! ## We switch the row & cols as that is how everyone else uses matrices!
temp_mat = Matrix() temp_mat = Matrix()
temp_mat._data[0,0] = splitted_transformation[0] temp_mat._data[0,0] = splitted_transformation[0]
temp_mat._data[1,0] = splitted_transformation[1] temp_mat._data[1,0] = splitted_transformation[1]
temp_mat._data[2,0] = splitted_transformation[2] temp_mat._data[2,0] = splitted_transformation[2]
temp_mat._data[0,1] = splitted_transformation[3] temp_mat._data[0,1] = splitted_transformation[3]
temp_mat._data[1,1] = splitted_transformation[4] temp_mat._data[1,1] = splitted_transformation[4]
temp_mat._data[2,1] = splitted_transformation[5] temp_mat._data[2,1] = splitted_transformation[5]
temp_mat._data[0,2] = splitted_transformation[6] temp_mat._data[0,2] = splitted_transformation[6]
temp_mat._data[1,2] = splitted_transformation[7] temp_mat._data[1,2] = splitted_transformation[7]
temp_mat._data[2,2] = splitted_transformation[8] temp_mat._data[2,2] = splitted_transformation[8]
temp_mat._data[0,3] = splitted_transformation[9] temp_mat._data[0,3] = splitted_transformation[9]
temp_mat._data[1,3] = splitted_transformation[10] temp_mat._data[1,3] = splitted_transformation[10]
temp_mat._data[2,3] = splitted_transformation[11] temp_mat._data[2,3] = splitted_transformation[11]
node.setPosition(Vector(temp_mat.at(0,3), temp_mat.at(1,3), temp_mat.at(2,3))) node.setPosition(Vector(temp_mat.at(0,3), temp_mat.at(1,3), temp_mat.at(2,3)))
temp_quaternion = Quaternion() temp_quaternion = Quaternion()
temp_quaternion.setByMatrix(temp_mat) temp_quaternion.setByMatrix(temp_mat)
node.setOrientation(temp_quaternion) node.setOrientation(temp_quaternion)
# Magical scale extraction # Magical scale extraction
S2 = temp_mat.getTransposed().multiply(temp_mat) S2 = temp_mat.getTransposed().multiply(temp_mat)
scale_x = math.sqrt(S2.at(0,0)) scale_x = math.sqrt(S2.at(0,0))
scale_y = math.sqrt(S2.at(1,1)) scale_y = math.sqrt(S2.at(1,1))
scale_z = math.sqrt(S2.at(2,2)) scale_z = math.sqrt(S2.at(2,2))
node.setScale(Vector(scale_x,scale_y,scale_z)) node.setScale(Vector(scale_x,scale_y,scale_z))
# We use a different coordinate frame, so rotate. # We use a different coordinate frame, so rotate.
rotation = Quaternion.fromAngleAxis(-0.5 * math.pi, Vector(1,0,0)) rotation = Quaternion.fromAngleAxis(-0.5 * math.pi, Vector(1,0,0))
node.rotate(rotation) node.rotate(rotation)
result.addChild(node) result.addChild(node)
# If there is more then one object, group them. # If there is more then one object, group them.
if len(root.model.resources.object) > 1: try:
group_decorator = GroupDecorator() if len(root.model.resources.object) > 1:
result.addDecorator(group_decorator) group_decorator = GroupDecorator()
result.addDecorator(group_decorator)
except:
pass
except Exception as e: except Exception as e:
print("EXCEPTION: " ,e) print("EXCEPTION: " ,e)
return result return result