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authorjaseg <git@jaseg.de>2022-01-16 21:59:24 +0100
committerjaseg <git@jaseg.de>2022-01-16 21:59:24 +0100
commit336a18fb493c79824323a59865083a0037a4a2f4 (patch)
tree3e1e0db5f821cf52c32f70a4b38fac77c5a99c8c /gerbonara/gerber/utils.py
parentd644661fb04d40a3e95dd604f8cc13641bab263b (diff)
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Excellon WIP
Diffstat (limited to 'gerbonara/gerber/utils.py')
-rw-r--r--gerbonara/gerber/utils.py42
1 files changed, 42 insertions, 0 deletions
diff --git a/gerbonara/gerber/utils.py b/gerbonara/gerber/utils.py
index 122dd5a..8e84c87 100644
--- a/gerbonara/gerber/utils.py
+++ b/gerbonara/gerber/utils.py
@@ -26,7 +26,42 @@ files.
import os
from math import radians, sin, cos, sqrt, atan2, pi
+
+class Unit:
+ def __init__(self, name, shorthand, this_in_mm):
+ self.name = name
+ self.shorthand = shorthand
+ self.factor = this_in_mm
+
+ def from(self, unit, value):
+ if isinstance(unit, str):
+ unit = units[unit]
+
+ if unit == self or unit is None or value is None:
+ return value
+
+ return value * unit.factor / self.factor
+
+ def to(self, unit, value):
+ if isinstance(unit, str):
+ unit = units[unit]
+
+ if unit is None:
+ return value
+
+ return unit.from(self, value)
+
+ def __eq__(self, other):
+ if isinstance(other, str):
+ return other.lower() in (self.name, self.shorthand)
+ else:
+ return self == other
+
+
MILLIMETERS_PER_INCH = 25.4
+Inch = Unit('inch', 'in', MILLIMETERS_PER_INCH)
+MM = Unit('millimeter', 'mm', 1)
+units = {'inch': Inch, 'mm': MM}
def decimal_string(value, precision=6, padding=False):
@@ -148,4 +183,11 @@ def sq_distance(point1, point2):
diff2 = point1[1] - point2[1]
return diff1 * diff1 + diff2 * diff2
+def convert_units(value, src, dst):
+ if src == dst or src is None or dst is None or value is None:
+ return value
+ elif dst == 'mm':
+ return value * 25.4
+ else:
+ return value / 25.4