Enum pallet_referenda::Curve
source · pub enum Curve {
LinearDecreasing {
length: Perbill,
floor: Perbill,
ceil: Perbill,
},
SteppedDecreasing {
begin: Perbill,
end: Perbill,
step: Perbill,
period: Perbill,
},
Reciprocal {
factor: FixedI64,
x_offset: FixedI64,
y_offset: FixedI64,
},
}
Expand description
Type for describing a curve over the 2-dimensional space of axes between 0-1, as represented
by (Perbill, Perbill)
.
Variants§
LinearDecreasing
Linear curve starting at (0, ceil)
, proceeding linearly to (length, floor)
, then
remaining at floor
until the end of the period.
SteppedDecreasing
Stepped curve, beginning at (0, begin)
, then remaining constant for period
, at which
point it steps down to (period, begin - step)
. It then remains constant for another
period
before stepping down to (period * 2, begin - step * 2)
. This pattern continues
but the y
component has a lower limit of end
.
Reciprocal
A recipocal (K/(x+S)-T
) curve: factor
is K
and x_offset
is S
, y_offset
is T
.
Implementations§
source§impl Curve
impl Curve
sourcepub const fn make_linear(
length: u128,
period: u128,
floor: FixedI64,
ceil: FixedI64,
) -> Curve
pub const fn make_linear( length: u128, period: u128, floor: FixedI64, ceil: FixedI64, ) -> Curve
Create a Curve::Linear
instance from a high-level description.
WARNING: This is a const
function designed for convenient use at build time and
will panic on overflow. Ensure that any inputs are sensible.
sourcepub const fn make_reciprocal(
delay: u128,
period: u128,
level: FixedI64,
floor: FixedI64,
ceil: FixedI64,
) -> Curve
pub const fn make_reciprocal( delay: u128, period: u128, level: FixedI64, floor: FixedI64, ceil: FixedI64, ) -> Curve
Create a Curve::Reciprocal
instance from a high-level description.
WARNING: This is a const
function designed for convenient use at build time and
will panic on overflow. Ensure that any inputs are sensible.
sourcepub fn delay(&self, y: Perbill) -> Perbill
pub fn delay(&self, y: Perbill) -> Perbill
Determine the smallest x
value such that passing
returns true
when passed along with
the given y
value.
If passing
never returns true
for any value of x
when paired with y
, then
Perbill::one
may be returned.
let c = Curve::LinearDecreasing { begin: Perbill::one(), delta: Perbill::one() };
// ^^^ Can be any curve.
let y = Perbill::from_percent(50);
// ^^^ Can be any value.
let x = c.delay(y);
assert!(c.passing(x, y));
Trait Implementations§
source§impl Decode for Curve
impl Decode for Curve
source§fn decode<__CodecInputEdqy: Input>(
__codec_input_edqy: &mut __CodecInputEdqy,
) -> Result<Self, Error>
fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>
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input: &mut I,
dst: &mut MaybeUninit<Self>,
) -> Result<DecodeFinished, Error>where
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fn decode_into<I>(
input: &mut I,
dst: &mut MaybeUninit<Self>,
) -> Result<DecodeFinished, Error>where
I: Input,
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I: Input,
fn skip<I>(input: &mut I) -> Result<(), Error>where
I: Input,
§fn encoded_fixed_size() -> Option<usize>
fn encoded_fixed_size() -> Option<usize>
source§impl Encode for Curve
impl Encode for Curve
source§fn size_hint(&self) -> usize
fn size_hint(&self) -> usize
source§fn encode_to<__CodecOutputEdqy: Output + ?Sized>(
&self,
__codec_dest_edqy: &mut __CodecOutputEdqy,
)
fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )
§fn using_encoded<R, F>(&self, f: F) -> R
fn using_encoded<R, F>(&self, f: F) -> R
§fn encoded_size(&self) -> usize
fn encoded_size(&self) -> usize
source§impl MaxEncodedLen for Curve
impl MaxEncodedLen for Curve
source§fn max_encoded_len() -> usize
fn max_encoded_len() -> usize
source§impl PartialEq for Curve
impl PartialEq for Curve
impl EncodeLike for Curve
impl Eq for Curve
impl StructuralPartialEq for Curve
Auto Trait Implementations§
impl Freeze for Curve
impl RefUnwindSafe for Curve
impl Send for Curve
impl Sync for Curve
impl Unpin for Curve
impl UnwindSafe for Curve
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