pub struct ScrollPosition(pub Vec2);
Expand description
The scroll position of the node. Values are in logical pixels, increasing from top-left to bottom-right.
Increasing the x-coordinate causes the scrolled content to visibly move left on the screen, while increasing the y-coordinate causes the scrolled content to move up. This might seem backwards, however what’s really happening is that the scroll position is moving the visible “window” in the local coordinate system of the scrolled content - moving the window down causes the content to move up.
Updating the values of ScrollPosition
will reposition the children of the node by the offset amount in logical pixels.
ScrollPosition
may be updated by the layout system when a layout change makes a previously valid ScrollPosition
invalid.
Changing this does nothing on a Node
without setting at least one OverflowAxis
to OverflowAxis::Scroll
.
Tuple Fields§
§0: Vec2
Implementations§
Source§impl ScrollPosition
impl ScrollPosition
pub const DEFAULT: ScrollPosition
Methods from Deref<Target = Vec2>§
pub const ZERO: Vec2
pub const ONE: Vec2
pub const NEG_ONE: Vec2
pub const MIN: Vec2
pub const MAX: Vec2
pub const NAN: Vec2
pub const INFINITY: Vec2
pub const NEG_INFINITY: Vec2
pub const X: Vec2
pub const Y: Vec2
pub const NEG_X: Vec2
pub const NEG_Y: Vec2
pub const AXES: [Vec2; 2]
pub const USES_CORE_SIMD: bool = false
pub const USES_NEON: bool = false
pub const USES_SCALAR_MATH: bool = true
pub const USES_SSE2: bool = false
pub const USES_WASM32_SIMD: bool = false
Sourcepub fn move_towards(&self, rhs: Vec2, d: f32) -> Vec2
pub fn move_towards(&self, rhs: Vec2, d: f32) -> Vec2
Moves towards rhs
based on the value d
.
When d
is 0.0
, the result will be equal to self
. When d
is equal to
self.distance(rhs)
, the result will be equal to rhs
. Will not go past rhs
.
Sourcepub fn rotate_towards(&self, rhs: Vec2, max_angle: f32) -> Vec2
pub fn rotate_towards(&self, rhs: Vec2, max_angle: f32) -> Vec2
Rotates towards rhs
up to max_angle
(in radians).
When max_angle
is 0.0
, the result will be equal to self
. When max_angle
is equal to
self.angle_between(rhs)
, the result will be parallel to rhs
. If max_angle
is negative,
rotates towards the exact opposite of rhs
. Will not go past the target.
Sourcepub fn as_i16vec2(&self) -> I16Vec2
pub fn as_i16vec2(&self) -> I16Vec2
Casts all elements of self
to i16
.
Sourcepub fn as_u16vec2(&self) -> U16Vec2
pub fn as_u16vec2(&self) -> U16Vec2
Casts all elements of self
to u16
.
Sourcepub fn as_i64vec2(&self) -> I64Vec2
pub fn as_i64vec2(&self) -> I64Vec2
Casts all elements of self
to i64
.
Sourcepub fn as_u64vec2(&self) -> U64Vec2
pub fn as_u64vec2(&self) -> U64Vec2
Casts all elements of self
to u64
.
Sourcepub fn as_usizevec2(&self) -> USizeVec2
pub fn as_usizevec2(&self) -> USizeVec2
Casts all elements of self
to usize
.
Trait Implementations§
Source§impl Clone for ScrollPosition
impl Clone for ScrollPosition
Source§fn clone(&self) -> ScrollPosition
fn clone(&self) -> ScrollPosition
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moreSource§impl Component for ScrollPosition
impl Component for ScrollPosition
Source§const STORAGE_TYPE: StorageType = bevy_ecs::component::StorageType::Table
const STORAGE_TYPE: StorageType = bevy_ecs::component::StorageType::Table
Source§type Mutability = Mutable
type Mutability = Mutable
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while immutable components will instead have Component<Mutability = Immutable>
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_requiree: ComponentId,
required_components: &mut RequiredComponentsRegistrator<'_, '_>,
)
fn register_required_components( _requiree: ComponentId, required_components: &mut RequiredComponentsRegistrator<'_, '_>, )
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fn clone_behavior() -> ComponentCloneBehavior
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fn on_add() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>
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fn on_insert() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>
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fn on_replace() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>
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fn map_entities<E>(_this: &mut Self, _mapper: &mut E)where
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EntityMapper
. This is used to remap entities in contexts like scenes and entity cloning.
When deriving Component
, this is populated by annotating fields containing entities with #[entities]
Read moreSource§impl Debug for ScrollPosition
impl Debug for ScrollPosition
Source§impl Default for ScrollPosition
impl Default for ScrollPosition
Source§fn default() -> ScrollPosition
fn default() -> ScrollPosition
Source§impl Deref for ScrollPosition
impl Deref for ScrollPosition
Source§impl DerefMut for ScrollPosition
impl DerefMut for ScrollPosition
Source§impl From<Vec2> for ScrollPosition
impl From<Vec2> for ScrollPosition
Source§fn from(value: Vec2) -> ScrollPosition
fn from(value: Vec2) -> ScrollPosition
Source§impl FromReflect for ScrollPosition
impl FromReflect for ScrollPosition
Source§fn from_reflect(
reflect: &(dyn PartialReflect + 'static),
) -> Option<ScrollPosition>
fn from_reflect( reflect: &(dyn PartialReflect + 'static), ) -> Option<ScrollPosition>
Self
from a reflected value.Source§fn take_from_reflect(
reflect: Box<dyn PartialReflect>,
) -> Result<Self, Box<dyn PartialReflect>>
fn take_from_reflect( reflect: Box<dyn PartialReflect>, ) -> Result<Self, Box<dyn PartialReflect>>
Self
using,
constructing the value using from_reflect
if that fails. Read moreSource§impl GetTypeRegistration for ScrollPosition
impl GetTypeRegistration for ScrollPosition
Source§fn get_type_registration() -> TypeRegistration
fn get_type_registration() -> TypeRegistration
TypeRegistration
for this type.Source§fn register_type_dependencies(registry: &mut TypeRegistry)
fn register_type_dependencies(registry: &mut TypeRegistry)
Source§impl PartialReflect for ScrollPosition
impl PartialReflect for ScrollPosition
Source§fn get_represented_type_info(&self) -> Option<&'static TypeInfo>
fn get_represented_type_info(&self) -> Option<&'static TypeInfo>
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&mut self,
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) -> Result<(), ApplyError>
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fn reflect_kind(&self) -> ReflectKind
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fn reflect_ref(&self) -> ReflectRef<'_>
Source§fn reflect_mut(&mut self) -> ReflectMut<'_>
fn reflect_mut(&mut self) -> ReflectMut<'_>
Source§fn reflect_owned(self: Box<ScrollPosition>) -> ReflectOwned
fn reflect_owned(self: Box<ScrollPosition>) -> ReflectOwned
Source§fn try_into_reflect(
self: Box<ScrollPosition>,
) -> Result<Box<dyn Reflect>, Box<dyn PartialReflect>>
fn try_into_reflect( self: Box<ScrollPosition>, ) -> Result<Box<dyn Reflect>, Box<dyn PartialReflect>>
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fn try_as_reflect_mut(&mut self) -> Option<&mut (dyn Reflect + 'static)>
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fn into_partial_reflect(self: Box<ScrollPosition>) -> Box<dyn PartialReflect>
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fn as_partial_reflect(&self) -> &(dyn PartialReflect + 'static)
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&self,
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fn is_dynamic(&self) -> bool
Source§impl Reflect for ScrollPosition
impl Reflect for ScrollPosition
Source§fn into_any(self: Box<ScrollPosition>) -> Box<dyn Any>
fn into_any(self: Box<ScrollPosition>) -> Box<dyn Any>
Box<dyn Any>
. Read moreSource§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
&mut dyn Any
. Read moreSource§fn into_reflect(self: Box<ScrollPosition>) -> Box<dyn Reflect>
fn into_reflect(self: Box<ScrollPosition>) -> Box<dyn Reflect>
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fn as_reflect(&self) -> &(dyn Reflect + 'static)
Source§fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)
fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)
Source§impl TupleStruct for ScrollPosition
impl TupleStruct for ScrollPosition
Source§fn field(&self, index: usize) -> Option<&(dyn PartialReflect + 'static)>
fn field(&self, index: usize) -> Option<&(dyn PartialReflect + 'static)>
index
as a
&dyn Reflect
.Source§fn field_mut(
&mut self,
index: usize,
) -> Option<&mut (dyn PartialReflect + 'static)>
fn field_mut( &mut self, index: usize, ) -> Option<&mut (dyn PartialReflect + 'static)>
index
as a &mut dyn Reflect
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fn iter_fields(&self) -> TupleStructFieldIter<'_> ⓘ
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fn to_dynamic_tuple_struct(&self) -> DynamicTupleStruct
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from this tuple struct.Source§fn get_represented_tuple_struct_info(&self) -> Option<&'static TupleStructInfo>
fn get_represented_tuple_struct_info(&self) -> Option<&'static TupleStructInfo>
None
if TypeInfo
is not available.Source§impl TypePath for ScrollPosition
impl TypePath for ScrollPosition
Source§fn type_path() -> &'static str
fn type_path() -> &'static str
Source§fn short_type_path() -> &'static str
fn short_type_path() -> &'static str
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fn type_ident() -> Option<&'static str>
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fn crate_name() -> Option<&'static str>
Auto Trait Implementations§
impl Freeze for ScrollPosition
impl RefUnwindSafe for ScrollPosition
impl Send for ScrollPosition
impl Sync for ScrollPosition
impl Unpin for ScrollPosition
impl UnwindSafe for ScrollPosition
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impl<C> Bundle for Cwhere
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