Struct footile::Mask

pub struct Mask { /* private fields */ }

A Mask is an image with only an 8-bit alpha channel.

It can be obtained from a Plotter after plotting. A Raster can be composited with a Mask.

Example

use footile::{PathBuilder, Plotter};
let path = PathBuilder::new()
                       .move_to(10f32, 10f32)
                       .line_to(90f32, 90f32)
                       .build();
let mut p = Plotter::new(100, 100);
p.stroke(&path);
let m = p.mask();

Implementations

impl Mask

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

Get pixel slice

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

Write the mask to a PGM (portable gray map) file.

• filename Name of file to write.

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

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

• filename Name of file to write.