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#[derive(Debug, Clone)]
pub enum MfType {
Triangle(Triangle),
Trapezoid(Trapezoid),
Up(Up),
Down(Down)
}
impl MfType {
pub fn compute(&self, x: f32) -> f32 {
match *self {
MfType::Triangle(ref value) => value.compute(x),
MfType::Trapezoid(ref value) => value.compute(x),
MfType::Up(ref value) => value.compute(x),
MfType::Down(ref value) => value.compute(x)
}
}
pub fn name(&self) -> &str {
match *self {
MfType::Triangle(ref value) => value.name(),
MfType::Trapezoid(ref value) => value.name(),
MfType::Up(ref value) => value.name(),
MfType::Down(ref value) => value.name()
}
}
}
#[derive(Debug, Clone)]
pub struct Triangle {
name: String,
a: f32,
b: f32,
c: f32
}
impl Triangle {
pub fn new(name: &str, init: Vec<f32>) -> MfType {
if init.len() != 3 {
panic!("init var for Triangle needs 3 values");
}
let triangle = Triangle {
name: name.to_owned(),
a: init[0],
b: init[1],
c: init[2]
};
MfType::Triangle(triangle)
}
fn compute(&self, x: f32) -> f32 {
let g1 = (x - self.a) / (self.b - self.a);
let g2 = (self.c - x) / (self.c - self.a);
0f32.max(g1.min(g2))
}
fn name(&self) -> &str {
&self.name
}
}
#[derive(Debug, Clone)]
pub struct Trapezoid {
name: String,
a: f32,
b: f32,
c: f32,
d: f32
}
impl Trapezoid {
pub fn new(name: &str, init: Vec<f32>) -> MfType {
if init.len() != 4 {
panic!("init var for Trapezoid needs 3 values");
}
let trapezoid = Trapezoid {
name: name.to_owned(),
a: init[0],
b: init[1],
c: init[2],
d: init[3]
};
MfType::Trapezoid(trapezoid)
}
fn compute(&self, x: f32) -> f32 {
let g1 = (x - self.a) / (self.b - self.a);
let g2 = (self.d - x) / (self.d - self.c);
g1.min(g2).min(1f32).max(0f32)
}
fn name(&self) -> &str {
&self.name
}
}
#[derive(Debug, Clone)]
pub struct Up {
name: String,
a: f32,
b: f32
}
impl Up {
pub fn new(name: &str, init: Vec<f32>) -> MfType {
if init.len() != 2 {
panic!("init var for Up needs 2 values");
}
let up = Up {
name: name.to_owned(),
a: init[0],
b: init[1]
};
MfType::Up(up)
}
fn compute(&self, x: f32) -> f32 {
if x < self.a {
return 0f32
}
if x > self.b {
return 1f32
}
(x - self.a) / (self.b - self.a)
}
fn name(&self) -> &str {
&self.name
}
}
#[derive(Debug, Clone)]
pub struct Down {
name: String,
a: f32,
b: f32
}
impl Down {
pub fn new(name: &str, init: Vec<f32>) -> MfType {
if init.len() != 2 {
panic!("init var for Up needs 2 values");
}
let down = Down {
name: name.to_owned(),
a: init[0],
b: init[1]
};
MfType::Down(down)
}
fn compute(&self, x: f32) -> f32 {
let up = Up::new(&self.name, vec![self.a, self.b]);
1f32 - up.compute(x)
}
fn name(&self) -> &str {
&self.name
}
}