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OffsetObjectPlacements patch now allows 3D rotations, such as to fix wrong Z axis coming from software like Solidworks

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This commit is contained in:
Dion Moult
2022-08-08 14:34:06 +10:00
parent 7c2c946b2f
commit 81fdfbacd0
1 changed files with 32 additions and 9 deletions
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src/ifcpatch/ifcpatch/recipes/OffsetObjectPlacements.py
+32 -9
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@@ -39,8 +39,15 @@ class Patcher:
absolute_placements.append(absolute_placement)
absolute_placements = set(absolute_placements)
angle = float(self.args[3])
transformation = self.z_rotation_matrix(math.radians(angle)) if angle else np.eye(4)
transformation = self.identity_matrix()
if len(self.args) == 4:
angle = self.args[3]
if angle:
transformation = self.z_rotation_matrix(math.radians(angle), transformation)
elif len(self.args) == 6:
for arg in (("x", self.args[3]), ("y", self.args[4]), ("z", self.args[5])):
if arg[1]:
transformation = getattr(self, f"{arg[0]}_rotation_matrix")(math.radians(arg[1]), transformation)
transformation[0][3] += float(self.args[0])
transformation[1][3] += float(self.args[1])
transformation[2][3] += float(self.args[2])
@@ -55,13 +62,29 @@ class Patcher:
return self.get_absolute_placement(object_placement.PlacementRelTo)
return object_placement
def z_rotation_matrix(self, angle):
return [
[math.cos(angle), -math.sin(angle), 0., 0.],
[math.sin(angle), math.cos(angle), 0., 0.],
[0., 0., 1., 0.],
[0., 0., 0., 1.],
]
def identity_matrix(self):
return np.eye(4)
def x_rotation_matrix(self, angle, transformation):
transformation[1][1] = math.cos(angle)
transformation[1][2] = -math.sin(angle)
transformation[2][1] = math.sin(angle)
transformation[2][2] = math.cos(angle)
return transformation
def y_rotation_matrix(self, angle, transformation):
transformation[0][0] = math.cos(angle)
transformation[0][2] = math.sin(angle)
transformation[2][0] = -math.sin(angle)
transformation[2][2] = math.cos(angle)
return transformation
def z_rotation_matrix(self, angle, transformation):
transformation[0][0] = math.cos(angle)
transformation[0][1] = -math.sin(angle)
transformation[1][0] = math.sin(angle)
transformation[1][1] = math.cos(angle)
return transformation
def get_relative_placement(self, m):
x = np.array((m[0][0], m[1][0], m[2][0]))