support module for some geometric mesurements ( geometric tramforms are in transform.py)
Imported modules
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from math import sqrt, atan2, pi, cos, sin
from misc import signum
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Functions
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angle_between_lines
clockwise_angle_from_east
find_parallel
get_parallel_distance
get_parallel_signum
line_length
on_which_side_is_point
point_on_circle
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angle_between_lines
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angle_between_lines ( l1, l2 )
returns angle between two lines
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clockwise_angle_from_east
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clockwise_angle_from_east ( dx, dy )
returns the angle in clockwise direction between the center-east line and direction
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find_parallel
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find_parallel (
x1,
y1,
x2,
y2,
d,
)
returns tuple of coordinates for parallel abscissa in distance d
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get_parallel_distance
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get_parallel_distance ( l1, l2 )
returns distance of two parallels - does not check whether the two are really parallels
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get_parallel_signum
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get_parallel_signum ( l1, l2 )
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line_length
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line_length ( ( )
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on_which_side_is_point
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on_which_side_is_point ( line, point )
tells whether a point is on one side of a line or on the other (1,0,-1) - 0 is for point on line.
line is given as sequence of four coordinates, point as sequence of two coords
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point_on_circle
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point_on_circle (
center_x,
center_y,
radius,
direction=(),
resolution=15,
)
finds point on circle in direction of (dx, dy), optionaly rounds the angle
according to resolution
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