<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source to the Rust file `src/canvas/canvas_text.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>canvas_text.rs.html -- source</title><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../dark.css"><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><script src="../../../storage.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="shortcut icon" href="../../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../../down-arrow.svg");}</style></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../../sfml_rust/index.html'><div class='logo-container'><img src='../../../rust-logo.png' alt='logo'></div></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../../settings.html"><img src="../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span>
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</pre><div class="example-wrap"><pre class="rust ">
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">descriptor</span>::<span class="ident">descriptor_set</span>::<span class="ident">PersistentDescriptorSet</span>;
<span class="kw">use</span> <span class="ident">rusttype</span>::{<span class="ident">Font</span>, <span class="ident">PositionedGlyph</span>, <span class="ident">Scale</span>, <span class="ident">Rect</span>, <span class="ident">point</span>, <span class="ident">GlyphId</span>};
<span class="kw">use</span> <span class="ident">rusttype</span>::<span class="ident">gpu_cache</span>::<span class="ident">Cache</span>;
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">buffer</span>::{<span class="ident">BufferAccess</span>, <span class="ident">BufferUsage</span>, <span class="ident">ImmutableBuffer</span>, <span class="ident">CpuAccessibleBuffer</span>};
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">device</span>::{<span class="ident">Device</span>, <span class="ident">Queue</span>};
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">Arc</span>;
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">command_buffer</span>::{<span class="ident">AutoCommandBufferBuilder</span>, <span class="ident">DynamicState</span>};
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">image</span>::{<span class="ident">ImmutableImage</span>, <span class="ident">ImageUsage</span>, <span class="ident">ImageLayout</span>, <span class="ident">Dimensions</span>};
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">format</span>::<span class="ident">ClearValue</span>;
<span class="kw">use</span> <span class="ident">vulkano</span>::<span class="ident">format</span>::<span class="ident">Format</span>::<span class="ident">R8Unorm</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>::<span class="ident">File</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>::<span class="ident">Read</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">canvas</span>::<span class="ident">shader</span>::<span class="ident">text_shader</span>::<span class="ident">GlyphInstance</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">util</span>::<span class="ident">vertex_3d</span>::{<span class="ident">Vertex3D</span>, <span class="ident">TextVertex3D</span>};
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">canvas</span>::<span class="ident">canvas_buffer</span>::<span class="ident">CanvasFont</span>;
<span class="comment">//pub struct Glyph {}</span>
<span class="comment">//</span>
<span class="comment">///// So currently, I'm using these as container classes which vkprocessor owns</span>
<span class="comment">///// I then use a CanvasFrame which accumulates lists of handles and vertices.</span>
<span class="comment">//pub struct CanvasFonto {</span>
<span class="comment">// font: Font<'static>,</span>
<span class="comment">// font_name: String,</span>
<span class="comment">// allocated_font_atlas: Arc<(dyn BufferAccess + Send + Sync)>,</span>
<span class="comment">//}</span>
<span class="comment">//</span>
<span class="comment">//impl CanvasFonto {</span>
<span class="comment">//</span>
<span class="comment">// pub fn parse_to_vertex_buffer(font: Font) -> Vec<TextVertex3D> {</span>
<span class="comment">//</span>
<span class="comment">// let mut current_x = 0;</span>
<span class="comment">// let mut current_y = 0;</span>
<span class="comment">//</span>
<span class="comment">// let mut accumulator = Vec::new();</span>
<span class="comment">//</span>
<span class="comment">// for i in (0..255) {</span>
<span class="comment">//</span>
<span class="comment">// let glyph = font.glyph(GlyphId{ 0: 40 });</span>
<span class="comment">//</span>
<span class="comment">// let glyph_data = glyph.get_data().unwrap();</span>
<span class="comment">//</span>
<span class="comment">// for vertex in glyph_data.clone().shape.clone().unwrap() {</span>
<span class="comment">// accumulator.push(TextVertex3D {</span>
<span class="comment">// position: [vertex.x as f32, vertex.y as f32, 0.0],</span>
<span class="comment">// });</span>
<span class="comment">// }</span>
<span class="comment">// }</span>
<span class="comment">//</span>
<span class="comment">// accumulator</span>
<span class="comment">// }</span>
<span class="comment">// /// Load the font</span>
<span class="comment">// pub fn new(device: Arc<Device>, queue: Arc<Queue>, font_name: String) -> CanvasFonto {</span>
<span class="comment">//</span>
<span class="comment">// let font = Font::from_bytes({</span>
<span class="comment">// let mut f = File::open("resources/fonts/sansation.ttf").expect("Font file not found");</span>
<span class="comment">// let mut font_data = Vec::new();</span>
<span class="comment">// f.read_to_end(&mut font_data).expect("Dont know");</span>
<span class="comment">// font_data</span>
<span class="comment">// }).unwrap();</span>
<span class="comment">//</span>
<span class="comment">// CanvasFont {</span>
<span class="comment">// font: font.clone(),</span>
<span class="comment">// font_name: font_name,</span>
<span class="comment">// allocated_font_atlas: ImmutableBuffer::from_iter(</span>
<span class="comment">// CanvasFont::parse_to_vertex_buffer(font.clone()).iter().cloned(),</span>
<span class="comment">// BufferUsage::vertex_buffer(), queue).unwrap().0,</span>
<span class="comment">// }</span>
<span class="comment">// }</span>
<span class="comment">//</span>
<span class="comment">// /// Generate a vertex buffer from the font</span>
<span class="comment">// pub fn get_vertex_buffer(&self) -> Arc<(dyn BufferAccess + Send + Sync)> {</span>
<span class="comment">// return self.allocated_font_atlas.clone();</span>
<span class="comment">// }</span>
<span class="comment">//</span>
<span class="comment">//}</span></pre></div>
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