def intersection_segment_segment(ab, cd, tol=1e-6):
"""Compute the intersection of two lines segments.
Parameters
----------
ab : tuple
XYZ coordinates of two points defining a line segment.
cd : tuple
XYZ coordinates of two points defining another line segment.
tol : float, optional
A tolerance for membership verification.
Default is ``1e-6``.
Returns
-------
None
If there is no intersection point.
list
XYZ coordinates of intersection point if one exists.
"""
x = intersection_line_line(ab, cd, tol=tol)
if not x:
return None
if is_point_on_segment(x, ab, tol=tol) and is_point_on_segment(
x, cd, tol=tol):
return x
def intersection_segment_segment(ab, cd, tol=0.0):
"""Compute the intersection of two lines segments.
Parameters
----------
ab : tuple
XYZ coordinates of two points defining a line segment.
cd : tuple
XYZ coordinates of two points defining another line segment.
Returns
-------
None
If there is no intersection point.
list
XYZ coordinates of intersection point if one exists.
"""
intx_pt = intersection_line_line(ab, cd)
if not intx_pt:
return None
if not is_point_on_segment(intx_pt, ab, tol):
return None
if not is_point_on_segment(intx_pt, cd, tol):
return None
return intx_pt
def intersection_segment_segment(ab, cd, tol=0.0):
""""""
intx_pt = intersection_line_line(ab, cd)
if not intx_pt:
return None
if not is_point_on_segment(intx_pt, ab, tol):
return None
if not is_point_on_segment(intx_pt, cd, tol):
return None
return intx_pt
def intersection_line_segment(line, segment, tol=1e-6):
""""""
x = intersection_line_line(line, segment, tol=tol)
if not x:
return None
if is_point_on_segment(x, segment, tol=tol):
return x
def check_colisions(b_struct, pts, radius, bar_nb=None, bar_checking=None):
"""[summary]
Parameters
----------
b_struct : [type]
[description]
pts : [type]
[description]
radius : [type]
[description]
bar_nb : [type], optional
[description], by default None
bar_checking : [type], optional
[description], by default None
Returns
-------
bool
True if no collision found, False otherwise
"""
tol = 50 # | TOL
# print "bar_checking", bar_checking
for b in b_struct.vertex:
if not bar_nb:
bar_nb = 100000000000000
if bar_checking != None and b < 3: continue
if b < bar_nb and b != bar_checking:
pts_b = b_struct.vertex[b]["axis_endpoints"]
dpp = dropped_perpendicular_points(pts[0], pts[1], pts_b[0],
pts_b[1])
try:
dist = distance_point_point(dpp[0], dpp[1])
except:
return False
# why 50?
if 2*radius - dist > TOL and \
is_point_on_segment(dpp[0], pts, tol=tol) and \
is_point_on_segment(dpp[1], pts_b, tol=tol):
print("COLLISION", len(b_struct.vertex))
return False
return True
def on_segment(self, segment):
"""Determine if the point lies on the given segment.
Parameters
----------
segment : segment
The segment.
Returns
-------
bool
True, if the point lies on the segment.
False, otherwise.
"""
return is_point_on_segment(self, segment)
