fn layout_paragraph<F, SF>(font: &SF, position: Point, text: &str) -> Vec<Glyph>
where
    F: Font,
    SF: ScaleFont<F>,
{
    let mut glyphs = vec![];
    glyphs.reserve(text.len());

    let v_advance = font.height() + font.line_gap();
    let mut caret = position + ab_glyph::point(0.0, font.ascent().ceil());
    let mut last_glyph: Option<Glyph> = None;
    for c in text.chars() {
        if c.is_control() {
            if c == '\n' {
                caret = ab_glyph::point(position.x, caret.y + v_advance);
                last_glyph = None;
            }
            continue;
        }
        let mut glyph = font.scaled_glyph(c);
        if let Some(previous) = last_glyph.take() {
            caret.x += font.kern(previous.id, glyph.id);
        }
        glyph.position = caret;

        last_glyph = Some(glyph.clone());
        caret.x += font.h_advance(glyph.id).ceil();

        if !c.is_whitespace() {
            glyphs.push(glyph);
        }
    }

    glyphs
}
/// Simple paragraph layout for glyphs into `target`.
/// Account for `\n` newlines and kerning between glyphs.
///
/// # Params
///
/// - font: the scaled font to use for selecting and aligning glyphs
/// - position: the starting position for the line of text
/// - text: the text to compute render into glyphs
///
Simple paragraph layout for glyphs into `target`.
Account for `\n` newlines and kerning between glyphs.
Simple paragraph layout for glyphs into ` target ` . Account for ` \ n ` newlines and kerning between glyphs .
fn layout_paragraph<F, SF>(font: &SF, position: Point, text: &str) -> Vec<Glyph>
where
    F: Font,
    SF: ScaleFont<F>,
{
    let mut glyphs = vec![];
    glyphs.reserve(text.len());
    let v_advance = font.height() + font.line_gap();
    let mut caret = position + ab_glyph::point(0.0, font.ascent().ceil());
    let mut last_glyph: Option<Glyph> = None;
    for c in text.chars() {
        if c.is_control() {
            if c == '\n' {
                caret = ab_glyph::point(position.x, caret.y + v_advance);
                last_glyph = None;
            }
            continue;
        }
        let mut glyph = font.scaled_glyph(c);
        if let Some(previous) = last_glyph.take() {
            caret.x += font.kern(previous.id, glyph.id);
        }
        glyph.position = caret;
        last_glyph = Some(glyph.clone());
        caret.x += font.h_advance(glyph.id).ceil();
        if !c.is_whitespace() {
            glyphs.push(glyph);
        }
    }
    glyphs
}
fn layout_paragraph < F , SF > ( font : & SF , position : Point , text : & str ) -> Vec < Glyph > where F : Font , SF : ScaleFont < F > , { let mut glyphs = vec ! [ ] ; glyphs . reserve ( text . len ( ) ) ; let v_advance = font . height ( ) + font . line_gap ( ) ; let mut caret = position + ab_glyph :: point ( 0.0 , font . ascent ( ) . ceil ( ) ) ; let mut last_glyph : Option < Glyph > = None ; for c in text . chars ( ) { if c . is_control ( ) { if c == '\n' { caret = ab_glyph :: point ( position . x , caret . y + v_advance ) ; last_glyph = None ; } continue ; } let mut glyph = font . scaled_glyph ( c ) ; if let Some ( previous ) = last_glyph . take ( ) { caret . x += font . kern ( previous . id , glyph . id ) ; } glyph . position = caret ; last_glyph = Some ( glyph . clone ( ) ) ; caret . x += font . h_advance ( glyph . id ) . ceil ( ) ; if ! c . is_whitespace ( ) { glyphs . push ( glyph ) ; } } glyphs }
Simple paragraph layout for glyphs into `target`.
Simple paragraph layout for glyphs into ` target ` .
font
&SF
position
Point
text
&str
params
the scaled font to use for selecting and aligning glyphs
position: the starting position for the line of text
text: the text to compute render into glyphs
the scaled font to use for selecting and aligning glyphs position : the starting position for the line of text text : the text to compute render into glyphs