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box.rs

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use processing_glfw::GlfwContext;

use bevy::math::Vec3;

use processing::prelude::*;

use processing_render::render::command::DrawCommand;

fn main() {

match sketch() {

Ok(_) => {

eprintln!("Sketch completed successfully");

exit(0).unwrap();

}

Err(e) => {

eprintln!("Sketch error: {:?}", e);

exit(1).unwrap();

}

};

}

fn sketch() -> error::Result<()> {

let mut glfw_ctx = GlfwContext::new(400, 400, false)?;

init(Config::default())?;

let width = 400;

let height = 400;

let surface = glfw_ctx.create_surface(width, height, false)?;

let graphics = graphics_create(surface, width, height, TextureFormat::Rgba16Float)?;

let box_geo = geometry_box(100.0, 100.0, 100.0)?;

graphics_mode_3d(graphics)?;

transform_set_position(graphics, Vec3::new(100.0, 100.0, 300.0))?;

transform_look_at(graphics, Vec3::new(0.0, 0.0, 0.0))?;

let mut angle: f32 = 0.0;

while glfw_ctx.poll_events() {

graphics_begin_draw(graphics)?;

graphics_record_command(

graphics,

DrawCommand::BackgroundColor(bevy::color::Color::srgb(0.1, 0.1, 0.15)),

)?;

graphics_record_command(graphics, DrawCommand::PushMatrix)?;

graphics_record_command(

graphics,

DrawCommand::Rotate {

angle,

axis: Vec3::Z,

)?;

graphics_record_command(graphics, DrawCommand::Geometry(box_geo))?;

graphics_record_command(graphics, DrawCommand::PopMatrix)?;

graphics_end_draw(graphics)?;

angle += 0.02;

}

Ok(())

}