[−][src]Struct mvt::Tile
A tile represents a rectangular region of a map. Each tile can contain any number of layers. When all layers have been added to the tile, it can be written out or converted to a Vec<u8>.
Example
use mvt::Tile; let mut tile = Tile::new(4096); let layer = tile.create_layer("First Layer"); // ... // set up the layer // ... tile.add_layer(layer)?; // ... // add more layers // ... let data = tile.to_bytes()?;
Methods
impl Tile
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pub fn new(extent: u32) -> Self
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Create a new tile.
extent
Size in screen coördinates.
pub fn extent(&self) -> u32
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Get extent in screen coördinates.
pub fn num_layers(&self) -> usize
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Get the number of layers.
pub fn create_layer(&self, name: &str) -> Layer
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Create a new layer.
name
Layer name.
pub fn add_layer(&mut self, layer: Layer) -> Result<(), Error>
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Add a layer.
layer
The layer.
Returns an error if:
- a layer with the same name already exists
- the layer extent does not match the tile extent
pub fn write_to(&self, out: &mut dyn Write) -> Result<(), Error>
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Write the tile.
out
Writer to output the tile.
pub fn to_bytes(&self) -> Result<Vec<u8>, Error>
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Encode the tile and return the bytes.
pub fn compute_size(&self) -> usize
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Compute the encoded size in bytes.
Auto Trait Implementations
Blanket Implementations
impl<T> From for T
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impl<T, U> Into for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom for T where
U: Into<T>,
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U: Into<T>,
type Error = !
🔬 This is a nightly-only experimental API. (
try_from
)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T> Borrow for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> BorrowMut for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T, U> TryInto for T where
U: TryFrom<T>,
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U: TryFrom<T>,