use absolute camera

src/bin/wireframe/main.rs

@@ -25,6 +25,7 @@ fn prepare_scene(device: &wgpu::Device) -> Vec<lines::Line> {
 		.collect()
 }
 
+#[cfg(any())]
 mod camctl {
 	use glam::{vec3, Mat4, Quat, Vec3};
 
@@ -58,6 +59,39 @@ mod camctl {
 	}
 }
 
+mod camctl {
+	use glam::{vec3, Mat4, Quat, Vec3};
+
+	pub struct CameraLocation {
+		pos: Vec3,
+		rot: Vec3,
+	}
+
+	fn rot_quat(rot: Vec3) -> Quat {
+		Quat::from_euler(glam::EulerRot::XYZ, rot.z, rot.y, rot.x)
+	}
+
+	impl CameraLocation {
+		pub fn new() -> CameraLocation {
+			let rot = vec3(std::f32::consts::FRAC_PI_4, 0., 0.);
+			let pos = rot_quat(rot) * vec3(-200., 0., 50.);
+			CameraLocation { pos, rot }
+		}
+
+		pub fn view_mtx(&self) -> Mat4 {
+			Mat4::from_quat(rot_quat(-self.rot)) * Mat4::from_translation(-self.pos)
+		}
+
+		pub fn move_rel(&mut self, offset: Vec3) {
+			self.pos += rot_quat(vec3(self.rot.x, 0., 0.)) * offset;
+		}
+
+		pub fn rotate_rel_ypr(&mut self, ypr: Vec3) {
+			self.rot += ypr;
+		}
+	}
+}
+
 mod keyctl {
 	use std::{collections::HashSet, iter::Sum};
 	use winit::{event::ElementState, keyboard::PhysicalKey};
@@ -101,6 +135,8 @@ static KEYS_MOVE: &'static [(PhysicalKey, Vec3)] = &[
 	(PhysicalKey::Code(KeyCode::KeyD), vec3(0., -1., 0.)),
 	(PhysicalKey::Code(KeyCode::KeyE), vec3(0., 0., 1.)),
 	(PhysicalKey::Code(KeyCode::KeyQ), vec3(0., 0., -1.)),
+	(PhysicalKey::Code(KeyCode::Space), vec3(0., 0., 1.)),
+	(PhysicalKey::Code(KeyCode::ShiftLeft), vec3(0., 0., -1.)),
 ];
 
 static KEYS_ROTATE: &'static [(PhysicalKey, Vec3)] = &[