diff options
Diffstat (limited to 'gerberex/utility.py')
| -rw-r--r-- | gerberex/utility.py | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gerberex/utility.py b/gerberex/utility.py index 4c89fa6..37de5e8 100644 --- a/gerberex/utility.py +++ b/gerberex/utility.py @@ -3,7 +3,7 @@ # Copyright 2019 Hiroshi Murayama <opiopan@gmail.com> -from math import cos, sin, pi +from math import cos, sin, pi, sqrt def rotate(x, y, angle, center): x0 = x - center[0] @@ -18,3 +18,10 @@ def is_equal_value(a, b, error_range=0): def is_equal_point(a, b, error_range=0): return is_equal_value(a[0], b[0], error_range) and \ is_equal_value(a[1], b[1], error_range) + +def normalize_vec2d(vec): + length = sqrt(vec[0] * vec[0] + vec[1] * vec[1]) + return (vec[0] / length, vec[1] / length) + +def dot_vec2d(vec1, vec2): + return vec1[0] * vec2[0] + vec1[1] * vec2[1]
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