diff --git a/src/camera.rs b/src/camera.rs index d7a264c..381ec6d 100644 --- a/src/camera.rs +++ b/src/camera.rs @@ -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>, map_ui_entity: Query>, mouse_buttons: Res>, + mut ev_scroll: EventReader, touches: Res, window: Query<&Window, With>, mut pointers: ResMut, @@ -41,14 +42,6 @@ fn move_cam( }.map(|(pressed,new_pos, old_pos)| (pressed,new_pos,old_pos,id,hit_map)) ).collect::>(); let pressed_on_map = ps.iter().filter(|p| p.0 && p.4.contains_key(&map_ui_entity)).collect::>(); - // 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); }