[−][src]Struct footile::RasterB
A raster image with borrowed pixel data. This is more tricky to use than Raster, so it should only be used when pixel data must be owned elsewhere.
Example
use footile::{PathBuilder,PixFmt,Plotter,RasterB,Rgba8}; let path = PathBuilder::new().pen_width(5.0) .move_to(16.0, 48.0) .line_to(32.0, 0.0) .line_to(-16.0, -32.0) .close().build(); let mut p = Plotter::new(100, 100); let mut r = RasterB::new(p.width(), p.height()); let len = (p.width() * p.height()) as usize; // NOTE: typically the pixels would be borrowed from some other source let mut pixels = vec!(0; len * std::mem::size_of::<Rgba8>()); let mut pix = Rgba8::as_slice_mut(&mut pixels); r.over(p.stroke(&path), Rgba8::rgb(208, 255, 208), pix);
Methods
impl<F: PixFmt> RasterB<F>
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pub fn new(width: u32, height: u32) -> RasterB<F>
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Create a new raster image for borrowed pixel data.
F
Pixel format.width
Width in pixels.height
Height in pixels.
pub fn width(&self) -> u32
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Get raster width.
pub fn height(&self) -> u32
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Get raster height.
pub fn clear(&self, pixels: &mut [F])
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Clear all pixels.
pub fn over(&self, mask: &mut Mask, clr: F, pixels: &mut [F])
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Blend pixels with an alpha mask.
mask
Alpha mask for compositing. It is cleared before returning.clr
Color to composite.pixels
Borrowed pixel data.
Auto Trait Implementations
Blanket Implementations
impl<T, U> Into for T where
U: From<T>,
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U: From<T>,
impl<T> From for T
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impl<T, U> TryFrom for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
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> 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>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,