在 Rust 中使用 piston2d 在单独的函数中渲染文本
Rendering text in a separate function using piston2d in rust
我正在尝试使用 piston2d / piston_window 在单独的函数中呈现文本。我可以很好地绘制文本,但我不知道如何将适当的参数传递给单独的函数。
我研究了 并相应地调整了我的代码,但我无法理解我遇到的错误。
use piston_window::*;
fn main() {
let font = include_bytes!("IBMPlexSans-Regular.ttf");
let opengl = OpenGL::V3_2;
let settings = WindowSettings::new("test", [500, 500])
.graphics_api(opengl)
.fullscreen(false)
.vsync(true)
.exit_on_esc(true);
let mut window: PistonWindow = settings.build().unwrap();
let mut glyphs = Glyphs::from_bytes(
font,
window.create_texture_context(),
TextureSettings::new(),
)
.unwrap();
while let Some(e) = window.next() {
window.draw_2d(&e, |c, gfx, device| {
clear([0.2; 4], gfx);
text::Text::new_color([1.0, 1.0, 1.0, 0.7], 30)
.draw(
"Hi!",
&mut glyphs,
&c.draw_state,
c.transform
.trans(100., 100.),
gfx,
)
.unwrap();
glyphs.factory.encoder.flush(device);
});
}
}
fn render_text(
x: f64,
y: f64,
text: &str,
size: u32,
c: Context,
g: &mut G2d,
glyphs: &mut glyph_cache::rusttype::GlyphCache<GfxFactory, G2dTexture>,
) {
text::Text::new(size)
.draw(text, glyphs, &c.draw_state, c.transform.trans(x, y), g)
.unwrap();
}
我收到以下错误:
error[E0277]: the trait bound `Texture<gfx_device_gl::Resources>: UpdateTexture<gfx_device_gl::factory::Factory>` is not satisfied
--> src/main.rs:54:10
|
54 | .draw(text, glyphs, &c.draw_state, c.transform.trans(x, y), g)
| ^^^^ the trait `UpdateTexture<gfx_device_gl::factory::Factory>` is not implemented for `Texture<gfx_device_gl::Resources>`
|
= help: the following implementations were found:
<Texture<R> as UpdateTexture<TextureContext<F, R, C>>>
= note: required because of the requirements on the impl of `CharacterCache` for `GlyphCache<'_, gfx_device_gl::factory::Factory, Texture<gfx_device_gl::Resources>>`
我知道这可能是活塞特有的,但我会很高兴收到任何指示。
刚遇到同样的问题。已经快一年了,但是 piston_window
的文档不是最好的,所以也许其他人会需要它。
这对我有用
use piston_window::types::Color;
use piston_window::{text, Context, G2d, Glyphs, Transformed};
pub const text_color: Color = [1.0, 1.0, 1.0, 1.0];
pub fn draw_text(
ctx: &Context,
graphics: &mut G2d,
glyphs: &mut Glyphs,
color: Color,
pos: Position,
text: &str,
) {
text::Text::new_color(color, 20)
.draw(
text,
glyphs,
&ctx.draw_state,
ctx.transform.trans(pos.x as f64, pos.y as f64),
graphics,
)
.unwrap();
}
pub struct Pos {
pub x: f64,
pub y: f64,
}
pub fn main() {
let assets = find_folder::Search::ParentsThenKids(3, 3)
.for_folder("assets")
.unwrap();
let ref font = assets.join("retro-gaming.ttf");
let mut glyphs = window.load_font(font).unwrap();
let size = [500., 500.];
let mut window: PistonWindow = WindowSettings::new("Test", size)
.resizable(false)
.exit_on_esc(true)
.build()
.unwrap();
while let Some(event) = window.next() {
window.draw_2d(&event, |ctx, g, _| {
draw_text(&ctx, g, &mut glyphs, text_color, Pos { x: 0, y: 10 }, "20")
}
}
}
注意我使用的“字形”与您不同。 “Cargo.toml”中还有一个依赖项,即 find_folder = "0.3.0"
.
我不完全确定上面的代码片段是否可以编译和工作。这是此提交 https://github.com/laszukdawid/rsnake/commit/e6e23563ebdd9c7b972ee17b5d0299e2202358cf.
的快速重构
我正在尝试使用 piston2d / piston_window 在单独的函数中呈现文本。我可以很好地绘制文本,但我不知道如何将适当的参数传递给单独的函数。
我研究了
use piston_window::*;
fn main() {
let font = include_bytes!("IBMPlexSans-Regular.ttf");
let opengl = OpenGL::V3_2;
let settings = WindowSettings::new("test", [500, 500])
.graphics_api(opengl)
.fullscreen(false)
.vsync(true)
.exit_on_esc(true);
let mut window: PistonWindow = settings.build().unwrap();
let mut glyphs = Glyphs::from_bytes(
font,
window.create_texture_context(),
TextureSettings::new(),
)
.unwrap();
while let Some(e) = window.next() {
window.draw_2d(&e, |c, gfx, device| {
clear([0.2; 4], gfx);
text::Text::new_color([1.0, 1.0, 1.0, 0.7], 30)
.draw(
"Hi!",
&mut glyphs,
&c.draw_state,
c.transform
.trans(100., 100.),
gfx,
)
.unwrap();
glyphs.factory.encoder.flush(device);
});
}
}
fn render_text(
x: f64,
y: f64,
text: &str,
size: u32,
c: Context,
g: &mut G2d,
glyphs: &mut glyph_cache::rusttype::GlyphCache<GfxFactory, G2dTexture>,
) {
text::Text::new(size)
.draw(text, glyphs, &c.draw_state, c.transform.trans(x, y), g)
.unwrap();
}
我收到以下错误:
error[E0277]: the trait bound `Texture<gfx_device_gl::Resources>: UpdateTexture<gfx_device_gl::factory::Factory>` is not satisfied
--> src/main.rs:54:10
|
54 | .draw(text, glyphs, &c.draw_state, c.transform.trans(x, y), g)
| ^^^^ the trait `UpdateTexture<gfx_device_gl::factory::Factory>` is not implemented for `Texture<gfx_device_gl::Resources>`
|
= help: the following implementations were found:
<Texture<R> as UpdateTexture<TextureContext<F, R, C>>>
= note: required because of the requirements on the impl of `CharacterCache` for `GlyphCache<'_, gfx_device_gl::factory::Factory, Texture<gfx_device_gl::Resources>>`
我知道这可能是活塞特有的,但我会很高兴收到任何指示。
刚遇到同样的问题。已经快一年了,但是 piston_window
的文档不是最好的,所以也许其他人会需要它。
这对我有用
use piston_window::types::Color;
use piston_window::{text, Context, G2d, Glyphs, Transformed};
pub const text_color: Color = [1.0, 1.0, 1.0, 1.0];
pub fn draw_text(
ctx: &Context,
graphics: &mut G2d,
glyphs: &mut Glyphs,
color: Color,
pos: Position,
text: &str,
) {
text::Text::new_color(color, 20)
.draw(
text,
glyphs,
&ctx.draw_state,
ctx.transform.trans(pos.x as f64, pos.y as f64),
graphics,
)
.unwrap();
}
pub struct Pos {
pub x: f64,
pub y: f64,
}
pub fn main() {
let assets = find_folder::Search::ParentsThenKids(3, 3)
.for_folder("assets")
.unwrap();
let ref font = assets.join("retro-gaming.ttf");
let mut glyphs = window.load_font(font).unwrap();
let size = [500., 500.];
let mut window: PistonWindow = WindowSettings::new("Test", size)
.resizable(false)
.exit_on_esc(true)
.build()
.unwrap();
while let Some(event) = window.next() {
window.draw_2d(&event, |ctx, g, _| {
draw_text(&ctx, g, &mut glyphs, text_color, Pos { x: 0, y: 10 }, "20")
}
}
}
注意我使用的“字形”与您不同。 “Cargo.toml”中还有一个依赖项,即 find_folder = "0.3.0"
.
我不完全确定上面的代码片段是否可以编译和工作。这是此提交 https://github.com/laszukdawid/rsnake/commit/e6e23563ebdd9c7b972ee17b5d0299e2202358cf.
的快速重构