2.1 KiB
math
dot()
Compute the dot product between two numeric arrays, returning a scalar. Extra elements are ignored.
project()
Project one vector onto another, returning a new array of the same dimension.
rotate()
Rotate a 2D point (or array of length 2) by the given angle (in turns) around an optional pivot.
midpoint()
Compute the midpoint of two arrays of numbers. Only the first two entries are used if 2D is intended.
reflect()
Reflect a vector across a plane normal. Both arguments must be numeric arrays.
distance()
Compute the Euclidean distance between two numeric arrays of matching length.
direction()
Compute the normalized direction vector from the first array to the second.
angle()
Given a 2D vector, return its angle from the X-axis in radians or some chosen units.
norm()
Return a normalized copy of the given numeric array. For 2D/3D/4D or arbitrary length.
angle_between()
Compute the angle between two vectors (2D/3D/4D).
lerp()
Linear interpolation between two numbers: lerp(a, b, t).
gcd()
Compute the greatest common divisor of two integers.
lcm()
Compute the least common multiple of two integers.
clamp()
Clamp a number between low and high. clamp(value, low, high).
angledist()
Compute the signed distance between two angles in 'turn' units, e.g. 0..1 range.
jitter()
Apply a random +/- percentage noise to a number. Example: jitter(100, 0.05) -> ~95..105.
mean()
Compute the arithmetic mean of an array of numbers.
sum()
Sum all elements of an array of numbers.
sigma()
Compute standard deviation of an array of numbers.
median()
Compute the median of an array of numbers.
length()
Return the length of a vector (i.e. sqrt of sum of squares).
from_to()
Return an array of points from a start to an end, spaced out by a certain distance.
rand()
Return a random float in [0,1).
randi()
Return a random 32-bit integer.
srand()
Seed the random number generator with the given integer, or with current time if none.