def get_line_features(lmk):
ps = [Vec2(0, 0), Vec2(1, 0)]
ls = LineSegment.from_points(ps)
dist_start = lmk.distance_to(ls.start)
dist_end = lmk.distance_to(ls.end)
dist_mid = lmk.distance_to(ls.mid)
tl = Line.from_normal(ls.direction, ls.start.x)
dir_start = -1 if tl.point_left(lmk) else 1
tl = Line.from_normal(ls.direction, ls.end.x)
dir_end = -1 if tl.point_left(lmk) else 1
tl = Line.from_normal(ls.direction, ls.mid.x)
dir_mid = -1 if tl.point_left(lmk) else 1
return {
'dist_start': dist_start,
'dist_mid': dist_mid,
'dist_end': dist_end,
'dir_start': dir_start,
'dir_mid': dir_mid,
'dir_end': dir_end,
}
def mirror_point(point_a, point_b, point_to_mirror):
vec_a = Vec2(point_a[0], point_a[1])
vec_b = Vec2(point_b[0] - point_a[0], point_b[1] - point_a[1])
line = Line(vec_a, vec_b)
org_vec = Vec2(point_to_mirror[0], point_to_mirror[1])
reflect_vec = line.reflect(org_vec)
return reflect_vec.x, reflect_vec.y
def get_primary_axes(self):
return [
Line.from_points([
Vec2(self.rect.min_point.x, self.rect.center.y),
Vec2(self.rect.max_point.x, self.rect.center.y)
]),
Line.from_points([
Vec2(self.rect.center.x, self.rect.min_point.y),
Vec2(self.rect.center.x, self.rect.max_point.y)
])
]
def intersects(self, shape: Polygon) -> bool:
"""Check whether this wall intersects a Polygon."""
segment_line = self.line_segment.line
vertex1, vertex2 = self.line_segment.points
relative_sides = ((p, segment_line.point_left(p)) for p in shape)
for (p1, s1), (p2, s2) in islice(pairwise(cycle(relative_sides)),
len(shape)):
if s1 is not s2:
# p1 and p2 are on opposite sides of the line that contains this wall
edge = Line.from_points([p1, p2])
if edge.point_left(vertex1) is not edge.point_left(vertex2):
return True
return False
def get_primary_axes(self):
return [Line.from_points([Vec2(self.rect.min_point.x, self.rect.center.y),
Vec2(self.rect.max_point.x, self.rect.center.y)]),
Line.from_points([Vec2(self.rect.center.x, self.rect.min_point.y),
Vec2(self.rect.center.x, self.rect.max_point.y)])]
def distance_to(x1, y1, x2, y2, px, py):
p = Vec2(x1, y1)
direction = Vec2(x2 - x1, y2 - y1)
line = Line(p, direction)
return abs(line.distance_to(Vec2(px, py)))
def distance_to(x1,y1,x2,y2,px,py):
p = Vec2(x1,y1)
direction = Vec2(x2-x1,y2-y1)
line = Line(p, direction)
return abs(line.distance_to(Vec2(px,py)))
'''
Created on Oct 23, 2012
@author: Nguyen Huu Hiep
'''
from planar import Vec2
from planar.line import Line
class LineOperator:
@staticmethod
def distance_to(x1,y1,x2,y2,px,py):
p = Vec2(x1,y1)
direction = Vec2(x2-x1,y2-y1)
line = Line(p, direction)
return abs(line.distance_to(Vec2(px,py)))
if __name__ == "__main__":
p = Vec2(0,0)
direction = Vec2(1,1)
line = Line(p, direction)
print line.distance_to(Vec2(0,1))
print line.distance_to(Vec2(1,0))
print line.distance_to(Vec2(2,2))
'''
Created on Oct 23, 2012
@author: Nguyen Huu Hiep
'''
from planar import Vec2
from planar.line import Line
class LineOperator:
@staticmethod
def distance_to(x1, y1, x2, y2, px, py):
p = Vec2(x1, y1)
direction = Vec2(x2 - x1, y2 - y1)
line = Line(p, direction)
return abs(line.distance_to(Vec2(px, py)))
if __name__ == "__main__":
p = Vec2(0, 0)
direction = Vec2(1, 1)
line = Line(p, direction)
print line.distance_to(Vec2(0, 1))
print line.distance_to(Vec2(1, 0))
print line.distance_to(Vec2(2, 2))
def get_primary_axes(self):
return [Line(self.location, Vec2(1,0)), Line(self.location, Vec2(0,1))]
