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Comments (2)

Olaroll avatar Olaroll commented on June 7, 2024

Oh, right. Forgot to make an issue for it 😅

from notan.

Nazariglez avatar Nazariglez commented on June 7, 2024
use notan::app::Color;
use notan::AppState;
use notan::draw::{CreateDraw, DrawConfig, DrawImages};
use notan::prelude::{Graphics, Texture, WindowConfig};

const WIDTH: i32 = 200;
const HEIGHT: i32 = 200;
const SLOPE: f32 = 0.83; // Try adjusting this for different aliasing patterns


#[derive(AppState)]
struct Program {
    texture: Texture,
}

fn main() -> Result<(), String> {
    let win = WindowConfig::new()
        .vsync(true)
        .high_dpi(false) // Doesn't make a difference?
        .resizable(false)
        .size(WIDTH, HEIGHT);

    notan::init_with(|gfx: &mut Graphics| {
        Program { texture: make_texture(gfx) }
    })
        .add_config(win)
        .add_config(DrawConfig)
        .draw(|gfx: &mut Graphics, this: &mut Program| {
            let mut draw = gfx.create_draw();
            draw.image(&this.texture);
            gfx.render(&draw);
        })
        .build()
}

fn make_texture(gfx: &mut Graphics) -> Texture {
    let mut data = vec![0; (WIDTH * HEIGHT * 4) as usize];
    let color = Color::WHITE.rgba_u8();

    let mut x_max = 0.0;
    for y in 0..HEIGHT {
        for x in 0..(x_max as i32).min(WIDTH) {
            let i = (y * WIDTH + x) as usize * 4;
            data[i..i+4].copy_from_slice(&color);
        }
        x_max += SLOPE;
    }

    gfx.create_texture()
        .from_bytes(&data, WIDTH, HEIGHT)
        .build()
        .unwrap()
}

from notan.

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