Struct OrthoTransformation 

pub struct OrthoTransformation(/* private fields */);

The amount of an orthogonal transformation. The tranformation either includes an optional initial x-flip that turns (1,0) into (-1,0), or not. Following the optional flip, the object being transformed is rotated counter-clockwise by some number of right-angle turns: 0, 1, 2, or 3. Multiple transformations can be chained together for arbitrary sequences of x-flips, y-flis, clockwise and counter-clockwise rotations.

These transformations are useful in situations where positions are restricted to an orthogonal grid, as in a tile map.

Implementations

impl OrthoTransformation

pub const F_0: &'static str = "0"

impl OrthoTransformation

pub const fn identity() -> Self

The transform that does nothing. It has no flip, and rotates by 0 right-angle turns.

pub const fn new(flipped: bool, rotation: i8) -> Self

The transformation that first does an optional x-flip, then rotates counter-clockwise by the given amount. The rotation is measured in units of 90-degree rotations. Positive rotation is counter-clockwise. Negative rotation is clockwise.

pub fn all() -> impl Iterator<Item = OrthoTransformation>

An iterator over all 8 possible OrthoTransformations.

pub const fn is_identity(&self) -> bool

True if this tranformation is the idenity transformation that leaves the transformed object unmodified.

pub const fn inverted(self) -> Self

Reverse this transformation, to it would return a transformed object back to where it started. In other words: x.transformed(t).transformed(t.inverted()) == x.

pub const fn is_flipped(&self) -> bool

True if this transform starts with an x-flip.

pub const fn rotation(&self) -> i8

The amount of rotation following the optional x-flip. The value is always 0, 1, 2, or 3, representing counter-clockwise rotations of 0, 90, 180, or 270 degrees.

pub fn matrix(&self) -> Matrix2<f32>

Matrix representation of this transformation.

Trait Implementations

impl Clone for OrthoTransformation

fn clone(&self) -> OrthoTransformation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OrthoTransformation

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for OrthoTransformation

fn default() -> Self

Returns the “default value” for a type.

impl Display for OrthoTransformation

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for OrthoTransformation

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl OrthoTransform for OrthoTransformation

fn x_flipped(self) -> Self

Flip the object parallel to the x axis, so x becomes -x.

fn rotated(self, amount: i8) -> Self

Rotate the object counter-clockwise by the given amount.

fn y_flipped(self) -> Self

Flip the object parallel to the y axis, so y becomes -y.

fn transformed(self, amount: OrthoTransformation) -> Self

Transform the object by the given amount.

impl PartialEq for OrthoTransformation

fn eq(&self, other: &OrthoTransformation) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Reflect for OrthoTransformation

where Self: 'static,

fn source_path() -> &'static str

fn try_clone_box(&self) -> Option<Box<dyn Reflect>>

fn type_name(&self) -> &'static str

fn derived_types() -> &'static [TypeId]

fn query_derived_types(&self) -> &'static [TypeId]

fn doc(&self) -> &'static str

fn assembly_name(&self) -> &'static str

Returns a parent assembly name of the type that implements this trait. WARNING: You should use proc-macro (#[derive(Reflect)]) to ensure that this method will return correct assembly name. In other words - there’s no guarantee, that any implementation other than proc-macro will return a correct name of the assembly. Alternatively, you can use env!("CARGO_PKG_NAME") as an implementation.

fn type_assembly_name() -> &'static str

Returns a parent assembly name of the type that implements this trait. WARNING: You should use proc-macro (#[derive(Reflect)]) to ensure that this method will return correct assembly name. In other words - there’s no guarantee, that any implementation other than proc-macro will return a correct name of the assembly. Alternatively, you can use env!("CARGO_PKG_NAME") as an implementation.

fn fields_ref(&self, func: &mut dyn FnMut(&[FieldRef<'_, '_>]))

fn fields_mut(&mut self, func: &mut dyn FnMut(&mut [FieldMut<'_, '_>]))

fn into_any(self: Box<Self>) -> Box<dyn Any>

fn set( &mut self, value: Box<dyn Reflect>, ) -> Result<Box<dyn Reflect>, Box<dyn Reflect>>

fn as_any(&self, func: &mut dyn FnMut(&dyn Any))

fn as_any_mut(&mut self, func: &mut dyn FnMut(&mut dyn Any))

fn as_reflect(&self, func: &mut dyn FnMut(&dyn Reflect))

fn as_reflect_mut(&mut self, func: &mut dyn FnMut(&mut dyn Reflect))

fn set_field( &mut self, field_name: &str, value: Box<dyn Reflect>, func: &mut dyn FnMut(Result<Box<dyn Reflect>, SetFieldError>), )

Calls user method specified with #[reflect(setter = ..)] or falls back to Reflect::field_mut

fn field( &self, name: &str, func: &mut dyn FnMut(Option<&(dyn Reflect + 'static)>), )

fn field_mut( &mut self, name: &str, func: &mut dyn FnMut(Option<&mut (dyn Reflect + 'static)>), )

fn as_array(&self, func: &mut dyn FnMut(Option<&(dyn ReflectArray + 'static)>))

fn as_array_mut( &mut self, func: &mut dyn FnMut(Option<&mut (dyn ReflectArray + 'static)>), )

fn as_list(&self, func: &mut dyn FnMut(Option<&(dyn ReflectList + 'static)>))

fn as_list_mut( &mut self, func: &mut dyn FnMut(Option<&mut (dyn ReflectList + 'static)>), )

fn as_inheritable_variable( &self, func: &mut dyn FnMut(Option<&(dyn ReflectInheritableVariable + 'static)>), )

fn as_inheritable_variable_mut( &mut self, func: &mut dyn FnMut(Option<&mut (dyn ReflectInheritableVariable + 'static)>), )

fn as_hash_map( &self, func: &mut dyn FnMut(Option<&(dyn ReflectHashMap + 'static)>), )

fn as_hash_map_mut( &mut self, func: &mut dyn FnMut(Option<&mut (dyn ReflectHashMap + 'static)>), )

fn as_handle( &self, func: &mut dyn FnMut(Option<&(dyn ReflectHandle + 'static)>), )

fn as_handle_mut( &mut self, func: &mut dyn FnMut(Option<&mut (dyn ReflectHandle + 'static)>), )

impl Visit for OrthoTransformation

fn visit(&mut self, name: &str, visitor: &mut Visitor) -> VisitResult

Read or write this value, depending on whether Visitor::is_reading() is true or false.

impl Copy for OrthoTransformation

impl Eq for OrthoTransformation

impl StructuralPartialEq for OrthoTransformation