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Arkitu 2024-12-27 19:03:41 +01:00
parent f49be0b90d
commit bc621ff9c1
1 changed files with 15 additions and 12 deletions
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27
src/camera.rs
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@ -1,4 +1,4 @@
use bevy::{math::NormedVectorSpace, picking::{focus::HoverMap, pointer::PointerId}, prelude::*, utils::HashMap, window::PrimaryWindow};
use bevy::{input::mouse::MouseWheel, math::NormedVectorSpace, picking::{focus::HoverMap, pointer::PointerId}, prelude::*, utils::{dbg, HashMap}, window::PrimaryWindow};
use crate::ui;
@ -15,7 +15,7 @@ fn setup(mut cmds: Commands, window: Query<&Window>) {
let zoom = 2./window.single().width().min(window.single().height());
cmds.spawn((
Camera2d,
Transform::from_scale(Vec3::new(zoom, zoom, 1.))
Transform::from_scale(Vec3::new(zoom, zoom, zoom))
));
}
@ -26,6 +26,7 @@ fn move_cam(
mut cam: Query<&mut Transform, With<Camera2d>>,
map_ui_entity: Query<Entity, With<ui::MapUIComponent>>,
mouse_buttons: Res<ButtonInput<MouseButton>>,
mut ev_scroll: EventReader<MouseWheel>,
touches: Res<Touches>,
window: Query<&Window, With<PrimaryWindow>>,
mut pointers: ResMut<Pointers>,
@ -41,14 +42,6 @@ fn move_cam(
}.map(|(pressed,new_pos, old_pos)| (pressed,new_pos,old_pos,id,hit_map))
).collect::<Vec<_>>();
let pressed_on_map = ps.iter().filter(|p| p.0 && p.4.contains_key(&map_ui_entity)).collect::<Vec<_>>();
// let mut movement = Vec2::ZERO;
// for (pressed, new_pos, old_pos, id, hit_map) in pressed_on_map.iter() {
// let delta = new_pos - old_pos;
// cam.scale += delta.dot(movement)/delta.norm();
// movement.x -= delta.x*cam.scale.x/pressed_num as f32;
// movement.y += delta.y*cam.scale.y/pressed_num as f32;
// pointers.0.insert(**id, *new_pos);
// }
let old_midpoint = pressed_on_map.iter().fold(Vec2::ZERO, |acc, (_, _, old_pos, _, _)| {
acc + (old_pos/pressed_on_map.len() as f32)
@ -56,9 +49,12 @@ fn move_cam(
let new_midpoint = pressed_on_map.iter().fold(Vec2::ZERO, |acc, (_, new_pos, _, _, _)| {
acc + (new_pos/pressed_on_map.len() as f32)
});
// move camera
cam.translation.x -= (new_midpoint.x - old_midpoint.x)*cam.scale.x;
cam.translation.y += (new_midpoint.y - old_midpoint.y)*cam.scale.y;
// multiple fingers zoom
if pressed_on_map.len() > 1 {
let old_d_to_midpoint = pressed_on_map.iter().fold(0., |acc, (_, _, old_pos, _, _)| {
acc + (old_midpoint-old_pos).norm()
@ -68,10 +64,17 @@ fn move_cam(
});
let zoom = new_d_to_midpoint/old_d_to_midpoint;
dbg!(zoom);
cam.scale.x /= zoom;
cam.scale.y /= zoom;
cam.scale /= zoom;
}
// mouse scroll zoom
for ev in ev_scroll.read() {
let scale = (cam.scale.x-(ev.y*0.1/window.width().min(window.height()))).clamp(0.0001, 2./window.width().min(window.height()));
cam.scale = Vec3::new(scale, scale, scale);
dbg!(cam.scale);
}
// update cached pointer positions
for (_, new_pos, _, id, _) in ps {
pointers.0.insert(*id, new_pos);
}