def test_interpolate(self):
# Straignt line x=y
coords = [
Coordinate(0.0, 0.0),
Coordinate(0.4, 0.4),
Coordinate(0.8, 0.8),
Coordinate(1.2, 1.2),
]
s = Surface(coords)
for i in range(100):
val = i / 100.0
result = s.interpolate(val)
assert result == Coordinate(val, val)
# horizontal line y=0.5
coords = [
Coordinate(0.0, 0.5),
Coordinate(0.4, 0.5),
Coordinate(0.8, 0.5),
Coordinate(1.2, 0.5),
]
s = Surface(coords)
for i in range(100):
val = i / 100.0
result = s.interpolate(val)
assert result == Coordinate(val, 0.5)
def test_interpolate_new_surface(self):
coords = [
Coordinate(0.0, 0.0),
Coordinate(0.4, 0.2),
Coordinate(0.8, 0.4),
Coordinate(1.2, 0.6),
]
# make same surface
s1 = Surface(coords)
s2 = Surface(coords)
length = 500
s3 = Surface.interpolate_new_surface(s1, s2, 10, 3, length)
assert len(s3.coordinates) == length
# test each original coordinate to see if it's the same
# doesn't validate correctly on an interpolated foil but
# works on our linear example
for c in s1.coordinates:
assert c == s3.interpolate(c.x)
# also only works on our contrived example
for i in range(len(s1.coordinates) - 1):
c1 = coords[i]
c2 = coords[i + 1]
c3 = c1 + c2
c3 = c3 * 0.5
assert s1.interpolate(c3.x) == s3.interpolate(c3.x)