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Transform works

This commit is contained in:
Chris Proctor 2023-07-30 17:40:08 -04:00
parent d01f07eea0
commit 1467e6e70f
2 changed files with 13 additions and 11 deletions
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21
test_transform.py
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@ -12,8 +12,9 @@ from transform import (
def test(function, arguments, expected):
observed = function(*arguments)
if observed != expected:
fname = function.__name__
args = ', '.join(str(arg) for arg in arguments)
print(f"Error: Expected {function}({args}) to equal {expected}, but it was {observed}")
print(f"Error: Expected {fname}({args}) to equal {expected}, but it was {observed}")
test(maximum, [[0, 1, 2, 3]], 3)
test(maximum, [[-10, -20, -30]], -10)
@ -21,14 +22,14 @@ test(minimum, [[0, 1, 2, 3]], 0)
test(minimum, [[-10, -20, -30]], -30)
test(bounds, [[0, 1, 2, 3]], [0, 3])
test(bounds, [[-10, -20, -30]], [-30, -10])
test(clamp, [[10, 0, 100]], 10)
test(clamp, [[-10, 0, 100]], 0)
test(clamp, [[104, 0, 100]], 100)
test(ratio, [[5, 0, 10]], 0.5)
test(ratio, [[167, 100, 200]], 0.67)
test(ratio, [[8, 10, 0]], 0.2)
test(ratio, [[4, 10, 20]], 0.0)
test(scale, [[4, 0, 10, 0, 100]], 40)
test(scale, [[160, 120, 240, 0, 100]], 100/3)
test(clamp, [10, 0, 100], 10)
test(clamp, [-10, 0, 100], 0)
test(clamp, [104, 0, 100], 100)
test(ratio, [5, 0, 10], 0.5)
test(ratio, [167, 100, 200], 0.67)
test(ratio, [8, 10, 0], 0.2)
test(ratio, [4, 10, 20], 0.0)
test(scale, [4, 0, 10, 0, 100], 40)
test(scale, [180, 120, 240, 0, 100], 50)
test(get_x_values, [[[0, 5], [1, 5], [2, 5]]], [0, 1, 2])
test(get_y_values, [[[0, 5], [1, 5], [2, 5]]], [5, 5, 5])

3
transform.py
View File

@ -32,7 +32,8 @@ def ratio(value, start, end):
def scale(value, domain_min, domain_max, range_min, range_max):
"Given a value within a domain, returns the scaled equivalent within range."
return range_min + ratio(value, domain_min, domain_max) * (range_max - range_min)
r = clamp(ratio(value, domain_min, domain_max), 0, 1)
return range_min + r * (range_max - range_min)
def get_x_values(points):
"Returns the first value for each point in points."