Struct piston_window::Context

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pub struct Context {
    pub viewport: Option<Viewport>,
    pub view: [[f64; 3]; 2],
    pub transform: [[f64; 3]; 2],
    pub draw_state: DrawState,
}

Expand description

Drawing 2d context.

Fields

viewport: Option<Viewport>

Viewport information.

view: [[f64; 3]; 2]

View transformation.

transform: [[f64; 3]; 2]

Current transformation.

draw_state: DrawState

Current draw state settings.

Implementations

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impl Context

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pub fn new() -> Context

Creates a new drawing context.

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pub fn new_viewport(viewport: Viewport) -> Context

Creates a new context with absolute transform in point coordinates.

This function assumes the default coordinate system being centered with x axis pointing to the right and y axis pointing up.

Returns a drawing context with origin in the upper left corner and x axis pointing to the right and y axis pointing down.

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pub fn new_abs(w: f64, h: f64) -> Context

Creates a new drawing context in absolute coordinates.

This function assumes the default coordinate system being centered with x axis pointing to the right and y axis pointing up.

Returns a drawing context with origin in the upper left corner and x axis pointing to the right and y axis pointing down.

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pub fn view(self) -> Context

Moves the current transform to the view coordinate system.

This is usually [0.0, 0.0] in the upper left corner with the x axis pointing to the right and the y axis pointing down.

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pub fn reset(self) -> Context

Moves the current transform to the default coordinate system.

This is usually [0.0, 0.0] in the center with the x axis pointing to the right and the y axis pointing up.

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pub fn store_view(self) -> Context

Stores the current transform as new view.

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pub fn get_view_size(&self) -> [f64 ; 2]

Computes the current view size.

Trait Implementations

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impl Clone for Context

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fn clone(&self) -> Context

Returns a copy of the value. Read more

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Transformed for Context

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fn append_transform(self, transform: [[f64 ; 3]; 2]) -> Context

Appends transform to the current one.

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fn prepend_transform(self, transform: [[f64 ; 3]; 2]) -> Context

Prepends transform to the current one.

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fn trans(self, x: f64, y: f64) -> Context

Translate x and y in local coordinates.

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fn rot_rad(self, angle: f64) -> Context

Rotate radians in local coordinates.

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fn orient(self, x: f64, y: f64) -> Context

Orients x axis to look at point locally. Read more

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fn scale(self, sx: f64, sy: f64) -> Context

Scales in local coordinates.

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fn shear(self, x: f64, y: f64) -> Context

Shears in local coordinates.

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fn rot_deg(self, angle: f64) -> Self

Rotates degrees in local coordinates.

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fn trans_pos(self, pos: P) -> Self where
P: Into<[f64 ; 2]>,

Translate position in local coordinates.

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fn orient_pos(self, pos: P) -> Self where
P: Into<[f64 ; 2]>,

Orients x axis to look at point locally.

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fn scale_pos(self, pos: P) -> Self where
P: Into<[f64 ; 2]>,

Scales in local coordinates.

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fn zoom(self, s: f64) -> Self

Scales in both directions in local coordinates.

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fn flip_v(self) -> Self

Flips vertically in local coordinates.

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fn flip_h(self) -> Self

Flips horizontally in local coordinates.

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fn flip_hv(self) -> Self

Flips horizontally and vertically in local coordinates.

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fn shear_pos(self, pos: P) -> Self where
P: Into<[f64 ; 2]>,

Shears in local coordinates.

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impl Copy for Context

Auto Trait Implementations

impl RefUnwindSafe for Context

impl Send for Context

impl Sync for Context

impl Unpin for Context

impl UnwindSafe for Context

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct piston_window::Context

Fields

Implementations

impl Context

pub fn new() -> Context

pub fn new_viewport(viewport: Viewport) -> Context

pub fn new_abs(w: f64, h: f64) -> Context

pub fn view(self) -> Context

pub fn reset(self) -> Context

pub fn store_view(self) -> Context

pub fn get_view_size(&self) -> [f64; 2]

Trait Implementations

impl Clone for Context

fn clone(&self) -> Context

fn clone_from(&mut self, source: &Self)

impl Transformed for Context

fn append_transform(self, transform: [[f64; 3]; 2]) -> Context

fn prepend_transform(self, transform: [[f64; 3]; 2]) -> Context

fn trans(self, x: f64, y: f64) -> Context

fn rot_rad(self, angle: f64) -> Context

fn orient(self, x: f64, y: f64) -> Context

fn scale(self, sx: f64, sy: f64) -> Context

fn shear(self, x: f64, y: f64) -> Context

fn rot_deg(self, angle: f64) -> Self

fn trans_pos<P>(self, pos: P) -> Self where P: Into<[f64; 2]>,

fn orient_pos<P>(self, pos: P) -> Self where P: Into<[f64; 2]>,

fn scale_pos<P>(self, pos: P) -> Self where P: Into<[f64; 2]>,

fn zoom(self, s: f64) -> Self

fn flip_v(self) -> Self

fn flip_h(self) -> Self

fn flip_hv(self) -> Self

fn shear_pos<P>(self, pos: P) -> Self where P: Into<[f64; 2]>,

impl Copy for Context

Auto Trait Implementations

impl RefUnwindSafe for Context

impl Send for Context

impl Sync for Context

impl Unpin for Context

impl UnwindSafe for Context

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::<T>()

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

pub fn get_view_size(&self) -> [f64 ; 2]

fn append_transform(self, transform: [[f64 ; 3]; 2]) -> Context

fn prepend_transform(self, transform: [[f64 ; 3]; 2]) -> Context

fn trans_pos<P>(self, pos: P) -> Self where
P: Into<[f64 ; 2]>,

fn orient_pos<P>(self, pos: P) -> Self where
P: Into<[f64 ; 2]>,

fn scale_pos<P>(self, pos: P) -> Self where
P: Into<[f64 ; 2]>,

fn shear_pos<P>(self, pos: P) -> Self where
P: Into<[f64 ; 2]>,

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,