msdfgen-rs's Introduction

Safe bindings to msdfgen library

Crates

msdfgen-sys Low-level unsafe bindings generated using bindgen.
msdfgen-lib Bundled library which can be build and link with application.
msdfgen High-level safe bindings which should be used by applications.

Features

ttf-parse Enables ttf-parser crate integration which allows create shapes for glyphs of specific font.
font Enables font crate integration which allows create shapes for glyphs of specific font.
freetype-rs Enables freetype-rs crate integration which allows create shapes for glyphs of specific font.
png Enables png crate integration which allows load and save bitmaps from/as PNG images.
all Meta-feature which enables all supported features.

Usage

use msdfgen_lib as _; // forces linking with msdfgen library

use std::fs::File;
use notosans::REGULAR_TTF as FONT;
use ttf_parser::Font;

use msdfgen::{FontExt, Bitmap, Range, EDGE_THRESHOLD, OVERLAP_SUPPORT};

fn main() {
    let font = Font::from_data(&FONT, 0).unwrap();
    let glyph = font.glyph_index('A').unwrap();
    let mut shape = font.glyph_shape(glyph).unwrap();

    if !shape.validate() {
        panic!("Invalid shape");
    }
    shape.normalize();

    let bounds = shape.get_bounds();

    let width = 32;
    let height = 32;

    let mut bitmap = Bitmap::new(width, height);

    println!("bounds: {:?}", bounds);

    shape.edge_coloring_simple(3.0, 0);

    let framing = bounds.autoframe(width, height, Range::Px(4.0), None).unwrap();

    println!("framing: {:?}", framing);

    shape.generate_msdf(&mut bitmap, &framing, EDGE_THRESHOLD, OVERLAP_SUPPORT);

    let mut output = File::create("A-msdf.png").unwrap();
    bitmap.write_png(&mut output).unwrap();
}

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