nordisk/facett

facett-demo/examples/clip_lab.rs

//! **Clip lab** — the rabbit logo and the glTF avocado, side by side, on the real
//! window, with no tab to click. The two panes the clipping report is about, hosted
//! exactly the way `facett-demo`'s deck hosts them (a `Facet` in a `ui.scope`), so a
//! screenshot of this window is a screenshot of the reported surface.
//!
//! `FACETT_CLIP_LAB_YAW` / `_TILT` pin the pose (radians) for a reproducible shot;
//! unset, both panes auto-spin.
//!
//! `cargo run -p facett-demo --example clip_lab`

use eframe::egui;
use facett_core::Facet;

struct App {
    rabbit: facett::graph3d::RabbitLogo3D,
    avocado: facett_model3d::Model3D,
    clock: f64,
    pinned: bool,
}

impl Default for App {
    fn default() -> Self {
        let yaw = std::env::var("FACETT_CLIP_LAB_YAW").ok().and_then(|v| v.parse::<f32>().ok());
        let tilt = std::env::var("FACETT_CLIP_LAB_TILT").ok().and_then(|v| v.parse::<f32>().ok());
        let mut rabbit = facett::graph3d::RabbitLogo3D::new("rabbit3d");
        let mut avocado =
            facett_model3d::Model3D::avocado("avocado3d").with_status(1.0).with_status_control(true);
        if let Some(y) = yaw {
            rabbit.spin = false;
            rabbit.yaw = y;
            avocado.update(facett_model3d::Msg::SetYaw(y));
            avocado.update(facett_model3d::Msg::SetSpin(false));
        }
        if let Some(t) = tilt {
            rabbit.tilt = t;
            avocado.update(facett_model3d::Msg::SetTilt(t));
        }
        Self { rabbit, avocado, clock: 0.0, pinned: yaw.is_some() }
    }
}

impl eframe::App for App {
    fn ui(&mut self, root: &mut egui::Ui, _frame: &mut eframe::Frame) {
        if !self.pinned {
            self.clock += 0.016;
        }
        egui::CentralPanel::default().show(root, |ui| {
            let full = ui.available_rect_before_wrap();
            let half = full.width() * 0.5;
            ui.horizontal_top(|ui| {
                ui.allocate_ui(egui::vec2(half - 4.0, full.height()), |ui| {
                    self.rabbit.ui(ui);
                });
                ui.allocate_ui(egui::vec2(half - 4.0, full.height()), |ui| {
                    self.avocado.ui(ui);
                });
            });
        });
        root.ctx().request_repaint();
    }
}

fn main() -> eframe::Result {
    let options = eframe::NativeOptions {
        viewport: egui::ViewportBuilder::default().with_inner_size(egui::Vec2::new(1400.0, 760.0)),
        ..Default::default()
    };
    eframe::run_native("facett · clip_lab", options, Box::new(|_cc| Ok(Box::<App>::default())))
}