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HammerProjection

map2fig::hammer

Struct HammerProjection 

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pub struct HammerProjection;
Expand description

Hammer-Aitoff projection.

An equal-area projection particularly useful for all-sky maps. The projection is defined as:

  • Forward: (lon, lat) → (x, y)
  • Inverse: (x, y) → (lon, lat)

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impl HammerProjection

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pub fn new() -> Self

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impl HammerProjection

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pub fn pixel_to_ang_batch_simd( &self, px_coords: &[u32; 8], py_coords: &[u32; 8], grid: &RasterGrid, ) -> ([f64; 8], [f64; 8], [bool; 8])

SIMD-accelerated batch projection for Hammer (8 pixels concurrently)

Uses vectorized operations for coordinate normalization and initial setup, then computes the Newton-Raphson inverse in scalar paths (independent per pixel, allowing CPU to parallelize via ILP).

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impl Clone for HammerProjection

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fn clone(&self) -> HammerProjection

Returns a duplicate 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 Debug for HammerProjection

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

Formats the value using the given formatter. Read more
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impl Default for HammerProjection

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Projection for HammerProjection

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fn pixel_to_ang_batch( &self, px_coords: &[u32; 8], py_coords: &[u32; 8], grid: &RasterGrid, ) -> ([f64; 8], [f64; 8], [bool; 8])

Batch projection for Hammer: process 8 pixels in parallel

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fn inverse(&self, u: f64, v: f64) -> Option<(f64, f64)>

Inverse projection: Maps normalized pixel coordinates (u, v) ∈ [0,1]² to spherical coordinates (lon, lat) in radians. Read more
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fn forward(&self, lon: f64, lat: f64) -> Option<(f64, f64)>

Forward projection: Maps spherical coordinates (lon, lat) in radians to normalized device coordinates (u, v) ∈ [0,1]². Read more
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fn pixel_to_ang(&self, x: u32, y: u32, grid: &RasterGrid) -> Option<(f64, f64)>

Maps normalized pixel coordinates to spherical coordinates in radians Read more
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impl Copy for HammerProjection

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

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fn type_id(&self) -> TypeId

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impl<Src, Scheme> ApproxFrom<Src, Scheme> for Src
where Scheme: ApproxScheme,

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type Err = NoError

The error type produced by a failed conversion.
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fn approx_from(src: Src) -> Result<Src, <Src as ApproxFrom<Src, Scheme>>::Err>

Convert the given value into an approximately equivalent representation.
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impl<Dst, Src, Scheme> ApproxInto<Dst, Scheme> for Src
where Dst: ApproxFrom<Src, Scheme>, Scheme: ApproxScheme,

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type Err = <Dst as ApproxFrom<Src, Scheme>>::Err

The error type produced by a failed conversion.
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fn approx_into(self) -> Result<Dst, <Src as ApproxInto<Dst, Scheme>>::Err>

Convert the subject into an approximately equivalent representation.
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impl<T> Borrow<T> for T
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fn borrow_mut(&mut self) -> &mut T

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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impl<T, Dst> ConvAsUtil<Dst> for T

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fn approx(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst>,

Approximate the subject with the default scheme.
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where Self: Sized + ApproxInto<Dst, Scheme>, Scheme: ApproxScheme,

Approximate the subject with a specific scheme.
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impl<T> ConvUtil for T

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fn approx_as<Dst>(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst>,

Approximate the subject to a given type with the default scheme.
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fn approx_as_by<Dst, Scheme>(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst, Scheme>, Scheme: ApproxScheme,

Approximate the subject to a given type with a specific scheme.
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Read this value from the supplied reader. Same as ReadEndian::read_from_native_endian().
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type Err = <Dst as TryFrom<Src>>::Err

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Convert the subject into an exactly equivalent representation.