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[examples] fixup examples and add port_pather example

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Jan Petykiewicz 2026-02-14 16:07:19 -08:00
commit 37418d2137
4 changed files with 176 additions and 67 deletions
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29
examples/tutorial/renderpather.py
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@ -25,14 +25,14 @@ def main() -> None:
library = Library()
library['pad'] = make_pad()
library['v1_via'] = make_via(
layer_top='M2',
layer_via='V1',
layer_bot='M1',
width_top=M2_WIDTH,
width_via=V1_WIDTH,
width_bot=M1_WIDTH,
ptype_bot='m1wire',
ptype_top='m2wire',
layer_top = 'M2',
layer_via = 'V1',
layer_bot = 'M1',
width_top = M2_WIDTH,
width_via = V1_WIDTH,
width_bot = M1_WIDTH,
ptype_bot = 'm1wire',
ptype_top = 'm2wire',
)
# `PathTool` is more limited than `BasicTool`. It only generates one type of shape
@ -42,7 +42,7 @@ def main() -> None:
M2_ptool = PathTool(layer='M2', width=M2_WIDTH, ptype='m2wire')
rpather = RenderPather(tools=M2_ptool, library=library)
# As in the pather tutorial, we make soem pads and labels...
# As in the pather tutorial, we make some pads and labels...
rpather.place('pad', offset=(18_000, 30_000), port_map={'wire_port': 'VCC'})
rpather.place('pad', offset=(18_000, 60_000), port_map={'wire_port': 'GND'})
rpather.pattern.label(layer='M2', string='VCC', offset=(18e3, 30e3))
@ -52,7 +52,7 @@ def main() -> None:
rpather.path('VCC', ccw=False, length=6_000)
rpather.path_to('VCC', ccw=None, x=0)
rpather.path('GND', 0, 5_000)
rpather.path_to('GND', None, x=rpather['VCC'].offset[0])
rpather.path_to('GND', None, x=rpather['VCC'].x)
# `PathTool` doesn't know how to transition betwen metal layers, so we have to
# `plug` the via into the GND wire ourselves.
@ -76,13 +76,14 @@ def main() -> None:
# just ask it to transition to an 'm1wire' port at the end of the final VCC segment.
# Instead, we have to calculate the via size ourselves, and adjust the final position
# to account for it.
via_size = abs(
library['v1_via'].ports['top'].offset[0]
- library['v1_via'].ports['bottom'].offset[0]
)
v1pat = library['v1_via']
via_size = abs(v1pat.ports['top'].x - v1pat.ports['bottom'].x)
# alternatively, via_size = v1pat.ports['top'].measure_travel(v1pat.ports['bottom'])[0][0]
# would take into account the port orientations if we didn't already know they're along x
rpather.path_to('VCC', None, -50_000 + via_size)
rpather.plug('v1_via', {'VCC': 'top'})
# Render the path we defined
rpather.render()
library['RenderPather_and_PathTool'] = rpather.pattern