def test_project_point_line(point, point_line, vector_line, point_expected,
dist_expected):
line = Line(point_line, vector_line)
point_projected = line.project_point(point)
distance = line.distance_point(point)
assert point_projected.is_close(point_expected)
assert math.isclose(distance, dist_expected)
def project_on_vector(L, R, M):
'''gets left and closest Right and measured points, returns projection on the vector btw. R&L of M'''
line = Line(point = L[0:2], direction=R[0:2])
point = Point(M[0:2])
line_const = line2pts(L, R)
point_projected = line.project_point(point)
line_projection = Line.from_points(point, point_projected)
result = {"Point" : point_projected,
"Line" : line_projection,
"Distance": distance_pt2line(line_const["m"], line_const["b"], M[0:2])}
return result
"""
2D Point-Line Projection
========================
Project a point onto a line.
"""
from skspatial.objects import Point, Line
from skspatial.plotting import plot_2d
line = Line(point=[0, 0], direction=[1, 1])
point = Point([1, 4])
point_projected = line.project_point(point)
line_projection = Line.from_points(point, point_projected)
_, ax = plot_2d(
line.plotter(t_2=5, c='k'),
line_projection.plotter(c='k', linestyle='--'),
point.plotter(s=75, c='k'),
point_projected.plotter(c='r', s=75, zorder=3),
)
ax.axis('equal')