diff options
Diffstat (limited to 'gerber/utils.py')
| -rw-r--r-- | gerber/utils.py | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/gerber/utils.py b/gerber/utils.py index bee8a91..c62ad2a 100644 --- a/gerber/utils.py +++ b/gerber/utils.py @@ -291,10 +291,25 @@ def rotate_point(point, angle, center=(0.0, 0.0)): `point` rotated about `center` by `angle` degrees. """ angle = radians(angle) - x_delta, y_delta = tuple(map(sub, point, center)) - x = center[0] + (cos(angle) * x_delta) - (sin(angle) * y_delta) - y = center[1] + (sin(angle) * x_delta) - (cos(angle) * y_delta) - 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): + '''Are the points nearly equal''' + + return round(point1[0] - point2[0], ndigits) == 0 and round(point1[1] - point2[1], ndigits) == 0 + + +def sq_distance(point1, point2): + + diff1 = point1[0] - point2[0] + diff2 = point1[1] - point2[1] + return diff1 * diff1 + diff2 * diff2 def listdir(directory, ignore_hidden=True, ignore_os=True): |