Struct footile::Raster

pub struct Raster<F: PixFmt> { /* fields omitted */ }

A raster image with owned pixel data. If the pixel data must be owned elsewhere, consider using RasterB.

Example

use footile::{PathBuilder,Plotter,Raster,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 = Raster::new(p.width(), p.height());
r.over(p.stroke(&path), Rgba8::rgb(208, 255, 208));

Methods

impl<F: PixFmt> Raster<F>

pub fn new(width: u32, height: u32) -> Raster<F>

Create a new raster image.

• F Pixel format.
• width Width in pixels.
• height Height in pixels.

pub fn width(&self) -> u32

Get raster width.

pub fn height(&self) -> u32

Get raster height.

pub fn as_slice(&self) -> &[F]

Get the pixels as a slice.

pub fn as_slice_mut(&mut self) -> &mut [F]

Get the pixels as a mutable slice.

pub fn as_u8_slice(&self) -> &[u8]

Get the pixels as a u8 slice.

pub fn as_u8_slice_mut(&mut self) -> &mut [u8]

Get the pixels as a mutable u8 slice.

pub fn clear(&mut self)

Clear all pixels.

pub fn over(&mut self, mask: &mut Mask, clr: F)

Blend pixels with an alpha mask.

• mask Alpha mask for compositing. It is cleared before returning.
• clr Color to composite.
• pixels Borrowed pixel data.

pub fn write_png(self, filename: &str) -> Result<()>

Write the raster to a PNG (portable network graphics) file.

• filename Name of file to write.