a519f3cf74
The web app reads a 3D mouse through the Gamepad API and drives the camera through navigation::device, so it follows each page's navigation capabilities (#1336). Co-authored-by: CamWight <CamWight@users.noreply.github.com> Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
352 lines
15 KiB
Rust
352 lines
15 KiB
Rust
//! 3D mouse input, shared by the desktop and web apps. Each app reads the device its own way (the
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//! desktop through HID, the web app through the browser's Gamepad API) and hands its six raw axes
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//! to [`navigate_frame`] once per frame. This module maps them, applies the dead zone and drops
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//! 3DxWare's emulated wheel; the page showing the camera moves it (`navigation::device`), so the
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//! cap does what that page's camera may do.
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use std::time::Duration;
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use crate::SolveApp;
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/// What a 3Dconnexion device reports at full deflection, in raw units, on every axis.
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pub const FULL_SCALE: i16 = 350;
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/// One reading of the six axes in the device's raw units: X right, Y towards the user, Z down,
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/// and the rotations about those axes (right-handed).
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#[derive(Clone, Copy, Debug, Default, PartialEq)]
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pub struct Axes {
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pub translation: [i16; 3],
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pub rotation: [i16; 3],
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}
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impl Axes {
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/// Some axis is past the dead zone: the cap is being moved.
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pub fn moving(self) -> bool {
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self.translation.iter().chain(&self.rotation).any(|&v| normalized(v) != 0.0)
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}
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}
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/// Where one physical axis goes: its logical axis, and how.
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#[derive(Clone, Copy, Debug, PartialEq)]
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pub struct AxisRule {
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pub output: usize,
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pub enabled: bool,
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pub reversed: bool,
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pub scale: f64,
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}
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/// The physical-to-logical axis mapping 3DxWare applies (the desktop reads it from the driver's
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/// profile; direct reads bypass the driver).
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#[derive(Clone, Copy, Debug, PartialEq)]
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pub struct DriverMapping {
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pub axes: [AxisRule; 6],
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pub overall_scale: f64,
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}
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impl Default for DriverMapping {
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fn default() -> Self {
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Self { axes: std::array::from_fn(|output| AxisRule { output, enabled: true, reversed: false, scale: 1.0 }), overall_scale: 1.0 }
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}
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}
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impl DriverMapping {
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/// What 3DxWare applies by default in object mode (#1172): the physical Ry and Rz swapped and
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/// reversed, so a tilt left/right rolls and a twist spins.
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pub fn object_mode() -> Self {
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let mut mapping = Self::default();
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mapping.axes[4] = AxisRule { output: 5, enabled: true, reversed: true, scale: 1.0 };
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mapping.axes[5] = AxisRule { output: 4, enabled: true, reversed: true, scale: 1.0 };
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mapping
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}
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pub fn apply(self, axes: Axes) -> Motion {
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let raw = [
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normalized(axes.translation[0]),
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normalized(axes.translation[1]),
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normalized(axes.translation[2]),
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normalized(axes.rotation[0]),
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normalized(axes.rotation[1]),
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normalized(axes.rotation[2]),
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];
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let mut logical = [0.0; 6];
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for (input, rule) in self.axes.iter().enumerate() {
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if rule.enabled {
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let sign = if rule.reversed { -1.0 } else { 1.0 };
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if let Some(slot) = logical.get_mut(rule.output) {
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*slot = raw[input] * sign * rule.scale * self.overall_scale;
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}
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}
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}
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Motion { translation: [logical[0], logical[1], logical[2]], rotation: [logical[3], logical[4], logical[5]] }
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}
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}
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/// The logical axes after the mapping, each in -1..1.
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#[derive(Clone, Copy, Debug, Default, PartialEq)]
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pub struct Motion {
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pub translation: [f64; 3],
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pub rotation: [f64; 3],
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}
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/// One frame of 3D mouse motion, waiting for the page that shows the camera: the logical axes,
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/// and how many seconds of motion they stand for (the frame's time, scaled by the speed).
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#[derive(Clone, Copy, Debug, Default, PartialEq)]
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pub struct DeviceMotion {
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pub motion: Motion,
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pub seconds: f64,
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}
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/// Hands one frame of 3D mouse input, `seconds` after the previous frame, to the page showing
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/// the camera. Nothing happens with navigation switched off, on the start page or while a file
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/// picker is open. Returns whether there was motion to hand over; it then asks for the next frame
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/// itself.
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pub fn navigate_frame(app: &mut SolveApp, ctx: &egui::Context, mapping: DriverMapping, axes: Axes, seconds: f64) -> bool {
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if !app.preferences.space_mouse_enabled || app.home.open || app.file_picker_busy() || axes == Axes::default() {
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return false;
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}
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let speed = f64::from(app.preferences.space_mouse_speed);
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if !speed.is_finite() {
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return false;
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}
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app.begin_external_navigation();
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// A long gap (the first frame after a pause) moves as far as a 50 ms one.
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let step = if seconds.is_finite() { seconds.min(0.05) } else { 0.0 };
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app.viewport.device_motion = Some(DeviceMotion { motion: mapping.apply(axes), seconds: step * speed.clamp(0.1, 5.0) });
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ctx.request_repaint_after(Duration::from_millis(16));
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true
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}
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/// A small dead zone avoids drift at rest. A full cap deflection takes roughly one viewport
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/// per second to pan and about two radians per second to turn, independent of frame rate.
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fn normalized(value: i16) -> f64 {
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let v = f64::from(value);
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if v.abs() <= 20.0 { 0.0 } else { v.signum() * ((v.abs() - 20.0) / 330.0).min(1.0) }
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::Services;
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use solidcraft_engine::Session;
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use solidcraft_engine::render::Camera;
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/// The camera math the page applies the motion with (`navigation::device`): `sketch` keeps
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/// the orientation, as editing a sketch does.
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fn navigate(cam: &mut Camera, motion: Motion, seconds: f64, height: f64, sketch: bool, reverse_zoom: bool) {
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crate::navigation::device_camera(cam, motion, seconds, height, !sketch, reverse_zoom);
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}
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/// One frame: the 3D mouse hands its motion over, and the modelling viewport applies it.
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fn frame(app: &mut SolveApp, ctx: &egui::Context, mapping: DriverMapping, axes: Axes, seconds: f64) -> bool {
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let handed = navigate_frame(app, ctx, mapping, axes, seconds);
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let page = egui::Rect::from_min_size(egui::Pos2::ZERO, egui::vec2(800.0, 600.0));
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crate::navigation::device(app, page, crate::navigation::NavCaps::MODEL);
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handed
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}
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fn raw(axes: Axes) -> Motion {
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DriverMapping::default().apply(axes)
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}
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fn app() -> SolveApp {
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let mut app = SolveApp::new(Session::default(), Services::default());
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app.home.open = false;
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app
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}
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const PUSH: Axes = Axes { translation: [0, 350, 0], rotation: [0; 3] };
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#[test]
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fn six_axes_move_the_camera_and_sketches_keep_their_orientation() {
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let mut cam = Camera::default();
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let before = cam;
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navigate(&mut cam, raw(Axes { translation: [350, 350, 350], rotation: [350, 350, 350] }), 0.02, 600.0, false, false);
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assert_ne!(cam.target, before.target);
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assert!(cam.distance < before.distance);
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assert_ne!(cam.yaw, before.yaw);
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assert_ne!(cam.pitch, before.pitch);
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assert_ne!(cam.roll, before.roll);
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let orientation = (cam.yaw, cam.pitch, cam.roll);
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navigate(&mut cam, raw(Axes { translation: [350, 0, 0], rotation: [350, 350, 350] }), 0.02, 600.0, true, false);
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assert_eq!((cam.yaw, cam.pitch, cam.roll), orientation);
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assert!(cam.is_valid());
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}
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#[test]
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fn individual_axes_have_physical_spacemouse_meaning() {
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let before = Camera::default();
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let mut slide = before;
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navigate(&mut slide, raw(Axes { translation: [350, 0, 0], rotation: [0; 3] }), 0.02, 600.0, false, false);
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assert_ne!(slide.target, before.target);
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assert_eq!(slide.distance, before.distance);
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let mut push = before;
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navigate(&mut push, raw(Axes { translation: [0, 350, 0], rotation: [0; 3] }), 0.02, 600.0, false, false);
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assert_eq!(push.target, before.target);
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assert!(push.distance < before.distance);
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let mut lift = before;
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navigate(&mut lift, raw(Axes { translation: [0, 0, 350], rotation: [0; 3] }), 0.02, 600.0, false, false);
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assert_ne!(lift.target, before.target);
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assert_eq!(lift.distance, before.distance);
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let mut tilt = before;
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navigate(&mut tilt, raw(Axes { translation: [0; 3], rotation: [350, 0, 0] }), 0.02, 600.0, false, false);
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assert_eq!((tilt.yaw, tilt.roll), (before.yaw, before.roll));
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assert_ne!(tilt.pitch, before.pitch);
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let mut roll = before;
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navigate(&mut roll, raw(Axes { translation: [0; 3], rotation: [0, 350, 0] }), 0.02, 600.0, false, false);
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assert_eq!((roll.pitch, roll.roll), (before.pitch, before.roll));
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assert_ne!(roll.yaw, before.yaw);
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let mut twist = before;
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navigate(&mut twist, raw(Axes { translation: [0; 3], rotation: [0, 0, 350] }), 0.02, 600.0, false, false);
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assert_eq!((twist.yaw, twist.pitch), (before.yaw, before.pitch));
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assert_ne!(twist.roll, before.roll);
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}
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#[test]
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fn reverse_zoom_setting_applies_to_spacemouse() {
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let before = Camera::default();
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let motion = raw(Axes { translation: [0, 350, 0], rotation: [0; 3] });
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let mut normal = before;
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navigate(&mut normal, motion, 0.02, 600.0, false, false);
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let mut reversed = before;
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navigate(&mut reversed, motion, 0.02, 600.0, false, true);
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assert!(normal.distance < before.distance);
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assert!(reversed.distance > before.distance);
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}
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#[test]
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fn object_mode_tilts_roll_and_twists_spin() {
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let before = Camera::default();
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let mut tilt = before;
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navigate(&mut tilt, DriverMapping::object_mode().apply(Axes { translation: [0; 3], rotation: [0, 350, 0] }), 0.02, 600.0, false, false);
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assert_eq!((tilt.yaw, tilt.pitch), (before.yaw, before.pitch));
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assert_ne!(tilt.roll, before.roll);
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let mut twist = before;
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navigate(&mut twist, DriverMapping::object_mode().apply(Axes { translation: [0; 3], rotation: [0, 0, 350] }), 0.02, 600.0, false, false);
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assert_ne!(twist.yaw, before.yaw);
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assert_eq!((twist.pitch, twist.roll), (before.pitch, before.roll));
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// The physical tilt right (Ry−) rolls one way and the clockwise twist (Rz+) spins the
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// other, as 3DxWare's profile has them (#1172).
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let tilt_right = DriverMapping::object_mode().apply(Axes { translation: [0; 3], rotation: [0, -350, 0] });
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assert_eq!(tilt_right, Motion { translation: [0.0; 3], rotation: [0.0, 0.0, 1.0] });
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let twist_clockwise = DriverMapping::object_mode().apply(Axes { translation: [0; 3], rotation: [0, 0, 350] });
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assert_eq!(twist_clockwise, Motion { translation: [0.0; 3], rotation: [0.0, -1.0, 0.0] });
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// Translations and the forward tilt are the raw axes.
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let all = Axes { translation: [100, -200, 300], rotation: [-150, 0, 0] };
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assert_eq!(DriverMapping::object_mode().apply(all), DriverMapping::default().apply(all));
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}
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#[test]
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fn the_dead_zone_is_rest() {
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assert!(!Axes::default().moving());
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assert!(!Axes { translation: [20, -20, 0], rotation: [0, 20, -20] }.moving());
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for i in 0..6 {
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let mut values = [0_i16; 6];
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values[i] = 21;
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let axes = Axes { translation: [values[0], values[1], values[2]], rotation: [values[3], values[4], values[5]] };
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assert!(axes.moving(), "axis {i}");
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values[i] = -21;
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let axes = Axes { translation: [values[0], values[1], values[2]], rotation: [values[3], values[4], values[5]] };
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assert!(axes.moving(), "axis {i} reversed");
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}
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assert!(Axes { translation: [i16::MIN, 0, 0], rotation: [0, 0, i16::MAX] }.moving());
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}
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#[test]
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fn a_mapping_never_reaches_past_the_six_axes() {
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let mut mapping = DriverMapping::default();
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mapping.axes[0].output = 6;
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mapping.axes[1].output = usize::MAX;
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let motion = mapping.apply(Axes { translation: [350, 350, 350], rotation: [350; 3] });
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assert_eq!(motion.translation, [0.0, 0.0, 1.0]);
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assert_eq!(motion.rotation, [1.0; 3]);
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}
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#[test]
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fn a_frame_moves_the_view_and_keeps_the_next_frame_coming() {
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let ctx = egui::Context::default();
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let mut app = app();
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let before = app.cam;
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assert!(frame(&mut app, &ctx, DriverMapping::default(), PUSH, 0.02));
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assert!(app.cam.distance < before.distance);
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// At rest, or with no time passed, nothing moves.
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let still = app.cam;
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assert!(!frame(&mut app, &ctx, DriverMapping::default(), Axes::default(), 0.02));
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assert!(frame(&mut app, &ctx, DriverMapping::default(), PUSH, 0.0));
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assert_eq!(app.cam.distance, still.distance);
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}
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#[test]
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fn an_open_file_picker_holds_the_view_until_it_closes() {
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let ctx = egui::Context::default();
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let mut app = app();
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let slot: crate::picker_test_support::Slot = Default::default();
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crate::picker_test_support::open(&mut app, &slot);
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app.pick_open(|_, _| {});
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assert!(app.file_picker_busy());
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let before = app.cam;
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assert!(!frame(&mut app, &ctx, DriverMapping::default(), PUSH, 0.02));
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assert_eq!(app.cam.distance, before.distance);
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// Cancelled: the 3D mouse moves the view again.
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*slot.borrow_mut() = Some(None);
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crate::file_picker::tick(&mut app, &ctx);
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assert!(!app.file_picker_busy());
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assert!(frame(&mut app, &ctx, DriverMapping::default(), PUSH, 0.02));
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assert!(app.cam.distance < before.distance);
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}
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#[test]
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fn a_long_gap_between_frames_moves_as_far_as_a_short_one() {
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let ctx = egui::Context::default();
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let (mut short, mut long) = (app(), app());
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frame(&mut short, &ctx, DriverMapping::default(), PUSH, 0.05);
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frame(&mut long, &ctx, DriverMapping::default(), PUSH, 30.0);
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assert_eq!(short.cam.distance, long.cam.distance);
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for seconds in [f64::NAN, f64::INFINITY, f64::NEG_INFINITY, -1.0] {
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let mut app = app();
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let before = app.cam;
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frame(&mut app, &ctx, DriverMapping::default(), PUSH, seconds);
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assert_eq!(app.cam.distance, before.distance, "{seconds}");
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}
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}
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#[test]
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fn navigation_off_the_start_page_and_a_hostile_speed_leave_the_view_alone() {
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let ctx = egui::Context::default();
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let mut off = app();
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off.preferences.space_mouse_enabled = false;
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let mut home = app();
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home.home.open = true;
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let mut nan = app();
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nan.preferences.space_mouse_speed = f32::NAN;
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for mut app in [off, home, nan] {
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let before = app.cam;
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assert!(!frame(&mut app, &ctx, DriverMapping::default(), PUSH, 0.02));
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assert_eq!(app.cam.distance, before.distance);
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}
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// Speed follows the preference, within 0.1 to 5 times.
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let speeds = [0.5, 2.0, 5.0, f32::MAX, 0.25, 0.0, -3.0];
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let distances: Vec<f64> = speeds
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.iter()
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.map(|&speed| {
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let mut app = app();
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app.preferences.space_mouse_speed = speed;
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frame(&mut app, &ctx, DriverMapping::default(), PUSH, 0.02);
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assert!(app.cam.is_valid(), "{speed}");
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app.cam.distance
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})
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.collect();
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assert!(distances[1] < distances[0]);
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assert_eq!(distances[3], distances[2], "past 5 times is 5 times");
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// Under 0.1 times is 0.1 times (the f32 preference can't hold 0.1 exactly): still a
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// motion, less than at 0.25.
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assert_eq!(distances[6], distances[5], "under 0.1 times is 0.1 times");
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assert!(distances[4] < distances[5] && distances[5] < app().cam.distance);
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}
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}
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