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camera_controllers.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 width = 800;

let height = 600;

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

init(Config::default())?;

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)?;

graphics_orbit_camera(graphics)?;

let dir_light =

light_create_directional(graphics, bevy::color::Color::srgb(1.0, 0.98, 0.95), 1_500.0)?;

transform_set_position(dir_light, Vec3::new(300.0, 400.0, 300.0))?;

transform_look_at(dir_light, Vec3::ZERO)?;

let mut angle: f32 = 0.0;

let mut mode = 0u8;

while glfw_ctx.poll_events() {

if input_key_just_pressed(KeyCode::Digit1)? {

graphics_mode_3d(graphics)?;

graphics_orbit_camera(graphics)?;

mode = 0;

}

if input_key_just_pressed(KeyCode::Digit2)? {

graphics_mode_3d(graphics)?;

graphics_free_camera(graphics)?;

mode = 1;

}

if input_key_just_pressed(KeyCode::Digit3)? {

graphics_mode_2d(graphics)?;

graphics_pan_camera(graphics)?;

mode = 2;

}

graphics_begin_draw(graphics)?;

graphics_record_command(

graphics,

DrawCommand::BackgroundColor(bevy::color::Color::srgb(0.05, 0.05, 0.07)),

)?;

if mode < 2 {

graphics_record_command(

graphics,

DrawCommand::Fill(bevy::color::Color::srgb(1.0, 0.85, 0.57)),

)?;

graphics_record_command(graphics, DrawCommand::Roughness(0.3))?;

graphics_record_command(graphics, DrawCommand::Metallic(0.8))?;

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)?;

} else {

graphics_record_command(

graphics,

DrawCommand::Fill(bevy::color::Color::srgb(0.8, 0.3, 0.2)),

)?;

graphics_record_command(

graphics,

DrawCommand::Rect {

x: 300.0,

y: 200.0,

w: 200.0,

h: 200.0,

radii: [0.0; 4],

)?;

}

graphics_end_draw(graphics)?;

angle += 0.02;

}

Ok(())

}