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dave: auto-reply, initial avatar anim

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Signed-off-by: William Casarin <jb55@jb55.com>
This commit is contained in:
William Casarin
2025-03-26 06:34:35 -07:00
parent 80f02d829a
commit 31aae7f315
5 changed files with 108 additions and 27 deletions
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49
crates/notedeck_dave/src/avatar.rs
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@@ -1,11 +1,13 @@
use std::num::NonZeroU64;
use crate::vec3::Vec3;
use eframe::egui_wgpu::{self, wgpu};
use egui::{Rect, Response};
use rand::Rng;
pub struct DaveAvatar {
rotation: Quaternion,
rot_dir: egui::Vec2,
rot_dir: Vec3,
}
// A simple quaternion implementation
@@ -28,13 +30,13 @@ impl Quaternion {
}
// Create from axis-angle representation
fn from_axis_angle(axis: [f32; 3], angle: f32) -> Self {
fn from_axis_angle(axis: &Vec3, angle: f32) -> Self {
let half_angle = angle * 0.5;
let s = half_angle.sin();
Self {
x: axis[0] * s,
y: axis[1] * s,
z: axis[2] * s,
x: axis.x * s,
y: axis.y * s,
z: axis.z * s,
w: half_angle.cos(),
}
}
@@ -358,7 +360,7 @@ fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
Self {
rotation: Quaternion::identity(),
rot_dir: egui::Vec2::ZERO,
rot_dir: Vec3::new(0.0, 0.0, 0.0),
}
}
}
@@ -373,6 +375,21 @@ fn apply_friction(val: f32, friction: f32, clamp: f32) -> f32 {
}
impl DaveAvatar {
pub fn random_nudge(&mut self) {
let mut rng = rand::rng();
let nudge = Vec3::new(
rng.random::<f32>(),
rng.random::<f32>(),
rng.random::<f32>(),
)
.normalize();
self.rot_dir.x += nudge.x;
self.rot_dir.y += nudge.y;
self.rot_dir.z += nudge.z;
}
pub fn render(&mut self, rect: Rect, ui: &mut egui::Ui) -> Response {
let response = ui.allocate_rect(rect, egui::Sense::drag());
@@ -381,10 +398,10 @@ impl DaveAvatar {
// Create rotation quaternions based on drag
let dx = response.drag_delta().x;
let dy = response.drag_delta().y;
let x_rotation = Quaternion::from_axis_angle([1.0, 0.0, 0.0], dy * 0.01);
let y_rotation = Quaternion::from_axis_angle([0.0, 1.0, 0.0], dx * 0.01);
let x_rotation = Quaternion::from_axis_angle(&Vec3::new(1.0, 0.0, 0.0), dy * 0.01);
let y_rotation = Quaternion::from_axis_angle(&Vec3::new(0.0, 1.0, 0.0), dx * 0.01);
self.rot_dir = egui::Vec2::new(dx, dy);
self.rot_dir = Vec3::new(dx, dy, 0.0);
// Apply rotations (order matters)
self.rotation = y_rotation.multiply(&x_rotation).multiply(&self.rotation);
@@ -394,15 +411,21 @@ impl DaveAvatar {
let clamp = 0.1;
self.rot_dir.x = apply_friction(self.rot_dir.x, friction, clamp);
self.rot_dir.y = apply_friction(self.rot_dir.y, friction, clamp);
self.rot_dir.z = apply_friction(self.rot_dir.y, friction, clamp);
// we only need to render if we're still spinning
if self.rot_dir.x > clamp || self.rot_dir.y > clamp {
if self.rot_dir.x > clamp || self.rot_dir.y > clamp || self.rot_dir.z > clamp {
let x_rotation =
Quaternion::from_axis_angle([1.0, 0.0, 0.0], self.rot_dir.y * 0.01);
Quaternion::from_axis_angle(&Vec3::new(1.0, 0.0, 0.0), self.rot_dir.y * 0.01);
let y_rotation =
Quaternion::from_axis_angle([0.0, 1.0, 0.0], self.rot_dir.x * 0.01);
Quaternion::from_axis_angle(&Vec3::new(0.0, 1.0, 0.0), self.rot_dir.x * 0.01);
let z_rotation =
Quaternion::from_axis_angle(&Vec3::new(0.0, 0.0, 1.0), self.rot_dir.z * 0.01);
self.rotation = y_rotation.multiply(&x_rotation).multiply(&self.rotation);
self.rotation = y_rotation
.multiply(&x_rotation)
.multiply(&z_rotation)
.multiply(&self.rotation);
ui.ctx().request_repaint();
}