62 lines
1.3 KiB
Rust
62 lines
1.3 KiB
Rust
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use winit::{
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event::{ElementState, KeyEvent, MouseScrollDelta, WindowEvent},
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keyboard::{KeyCode, PhysicalKey},
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};
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use crate::camera::Camera;
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pub struct CameraController {
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speed: f32,
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cursor: (f64, f64),
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forward: f32,
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}
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impl CameraController {
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pub fn new(speed: f32) -> Self {
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Self {
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speed,
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cursor: (0.0, 0.0),
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forward: 0.0,
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}
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}
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pub fn process_events(&mut self, event: &WindowEvent) -> bool {
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match event {
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WindowEvent::CursorMoved { position, .. } => {
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self.cursor = (position.x, position.y);
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true
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}
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WindowEvent::MouseWheel { delta, .. } => match delta {
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MouseScrollDelta::LineDelta(_, y) => {
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self.forward = *y;
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true
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}
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_ => false,
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},
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_ => false,
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}
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}
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pub fn update_camera(&mut self, camera: &mut Camera) {
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use cgmath::InnerSpace;
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let forward = camera.target - camera.eye;
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let forward_norm = forward.normalize();
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if self.forward > 0.0 {
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camera.eye += forward_norm * self.speed;
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}
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else if self.forward < 0.0 {
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camera.eye -= forward_norm * self.speed;
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}
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camera.eye.x = (self.cursor.0 as f32 / 1920.0) - 0.5;
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camera.eye.y = (-self.cursor.1 as f32 / 1080.0) + 0.5;
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camera.target.x = (self.cursor.0 as f32 / 1920.0) - 0.5;
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camera.target.y = (-self.cursor.1 as f32 / 1080.0) + 0.5;
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self.forward = 0.0;
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}
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}
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