55 lines
1.6 KiB
Python
55 lines
1.6 KiB
Python
from dataclasses import dataclass
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import cadquery as Cq
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from nhf import Material, Role
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from nhf.build import Model, target, assembly, TargetKind
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import nhf.utils
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@dataclass
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class LightPanel(Model):
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# Dimensions of the base panel
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length: float = 300.0
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width: float = 200.0
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grid_height: float = 30.0
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grid_top_height: float = 10.0
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# Distance from grid to edge
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grid_margin: float = 20.0
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# Number of holes in each row of the grid
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grid_holes: int = 5
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grid_layers: int = 10
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grid_hole_width: float = 10.0
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base_thickness: float = 25.4/16
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grid_thickness: float = 25.4/8
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def __post_init__(self):
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assert self.grid_holes >= 2
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super().__init__(name="crown")
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@target(name="grid", kind=TargetKind.DXF)
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def grid_profile(self):
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w = self.length - self.grid_margin * 2
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h = self.grid_height + self.grid_top_height
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# The width of one hole (w0) satisfies
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# n * w0 + (n+1) t = w
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# where t is the thickness of the edge
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n = self.grid_holes
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w0 = self.grid_hole_width
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t = (w - n * w0) / (n + 1)
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# The spacing is such that the first and last holes are a distance `t`
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# away from the edges, so it satisfies
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# t + w0/2 + (n-1) * s + w0/2 + t = w
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step = (w - t*2 - w0) / (n - 1)
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return (
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Cq.Sketch()
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.push([(0, h/2)])
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.rect(w, h)
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.push([
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(i * step + t + w0/2 - w/2, self.grid_height/2)
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for i in range(0, n)
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])
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.rect(w0, self.grid_height, mode='s')
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)
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