Cosplay/nhf/utils.py

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"""
Marking utilities for `Cq.Workplane`
Adds the functions to `Cq.Workplane`:
1. `tagPoint`
2. `tagPlane`
"""
import cadquery as Cq
def tagPoint(self, tag: str):
"""
Adds a vertex that can be used in `Point` constraints.
"""
vertex = Cq.Vertex.makeVertex(0, 0, 0)
self.eachpoint(vertex.moved, useLocalCoordinates=True).tag(tag)
Cq.Workplane.tagPoint = tagPoint
def tagPlane(self, tag: str, axis='Z'):
"""
Adds a phantom `Cq.Edge` in the given location which can be referenced in a
`Axis`, `Point`, or `Plane` constraint.
"""
x, y, z = 0, 0, 0
if axis in ('z', 'Z'):
z = 1
elif axis in ('y', 'Y'):
y = 1
elif axis in ('x', 'X'):
x = 1
else:
assert False, "Axis must be one of x,y,z"
edge = Cq.Edge.makeLine((-x, -y, -z), (x, y, z))
self.eachpoint(edge.moved, useLocalCoordinates=True).tag(tag)
Cq.Workplane.tagPlane = tagPlane