diff options
Diffstat (limited to 'gerber/utils.py')
| -rw-r--r-- | gerber/utils.py | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/gerber/utils.py b/gerber/utils.py index 16323d6..72bf2d1 100644 --- a/gerber/utils.py +++ b/gerber/utils.py @@ -284,10 +284,13 @@ def rotate_point(point, angle, center=(0.0, 0.0)): `point` rotated about `center` by `angle` degrees. """ angle = radians(angle) - xdelta, ydelta = tuple(map(sub, point, center)) - x = center[0] + (cos(angle) * xdelta) - (sin(angle) * ydelta) - y = center[1] + (sin(angle) * xdelta) - (cos(angle) * ydelta) - return (x, y) + + cos_angle = cos(angle) + sin_angle = sin(angle) + + return ( + cos_angle * (point[0] - center[0]) - sin_angle * (point[1] - center[1]) + center[0], + sin_angle * (point[0] - center[0]) + cos_angle * (point[1] - center[1]) + center[1]) def nearly_equal(point1, point2, ndigits = 6): |