Module utils 

utils module provides some useful helper functions of random generation and gradient scale

Functions

distance_squared

Return squared distance between to points

explosion_gradient_1

A sample function defining the gradient of the Particle

explosion_gradient_2

A sample function defining the gradient of the Particle

explosion_gradient_3

A sample function defining the gradient of the Particle

gen_points_arc

Generate random Vec2 on an arc

gen_points_circle

Generate random Vec2 within a circle range

gen_points_circle_normal

Generate random Vec2 within a circle range with normal distribution

gen_points_circle_normal_dev

Generate random Vec2 within a circle range with normal distribution

gen_points_fan

Generate random Vec2 within a fan-shape range

gen_points_on_circle

Generate random Vec2 on a circle

linear_gradient_1

A sample function defining the gradient of the Particle

round

Round a Vec2 from (f32, f32) to (isize, isize)