[−][src]Struct gravitas::Gravity
a position under the influence of gravity (or any other constant acceleration), as defined by Newton's 2nd Law: F = ma
.
Newton's 2nd law, F = ma
, integrates to x' = x + v * t + 0.5 * a * t * t
, which is what this simulation uses to compute a position.
This simulation is nice for objects that are falling, or have to overcome gravity in some way.
- gravity combined with a spring simulation to make bouncy dialog boxes: Gravitas JavaScript bouncy dialogs.
- gravity used to make a lock screen, which must be dragged upwards to unlock: Gravitas JavaScript lock screen.
Methods
impl Gravity
[src]
pub fn new(a: f32) -> Gravity
[src]
Create a new gravity siulation with the given acceleration. A value of 500 * 9.8 (so 500px corresponds to 1 meter) is normally a good starting point.
pub fn set(&mut self, x: f32, v: f32)
[src]
Set the initial position and velocity (in pixels per second) of the gravity simulation.
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for Gravity
impl Send for Gravity
impl Sync for Gravity
impl Unpin for Gravity
impl UnwindSafe for Gravity
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
[src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
[src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
[src]
impl<T> From<T> for T
[src]
impl<T, U> Into<U> for T where
U: From<T>,
[src]
U: From<T>,
impl<T> ToOwned for T where
T: Clone,
[src]
T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
[src]
fn clone_into(&self, target: &mut T)
[src]
impl<T, U> TryFrom<U> for T where
U: Into<T>,
[src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
[src]
U: TryFrom<T>,