From 344a604877823b16fdff7e759b85cd099e2ad3c9 Mon Sep 17 00:00:00 2001
From: numzero <numzer0@yandex.ru>
Date: Sat, 12 Sep 2026 16:17:07 +0300
Subject: [PATCH] switch to right-handed CS

---
 src/camera.rs         | 12 ++++++------
 src/lib.rs            |  4 ++--
 ui/src/main_window.ui |  2 +-
 3 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/src/camera.rs b/src/camera.rs
index f54059b..3e5930e 100644
--- a/src/camera.rs
+++ b/src/camera.rs
@@ -9,11 +9,11 @@ pub(crate) fn rotation(yaw: f32, pitch: f32) -> Mat3 {
 }
 
 pub(crate) fn view(yaw: f32, pitch: f32, distance: f32) -> Affine3A {
-	Affine3A::from_mat3_translation(rotation(yaw, pitch), vec3(0., 0., distance))
+	Affine3A::from_mat3_translation(rotation(-yaw, -pitch), vec3(0., 0., -distance))
 }
 
 pub(crate) fn projection(fovy: f32, aspect: f32) -> Mat4 {
-	Mat4::perspective_lh(fovy, aspect, 0.1, 10.0)
+	Mat4::perspective_rh(fovy, aspect, 0.1, 10.0)
 }
 
 #[cfg(test)]
@@ -50,10 +50,10 @@ mod tests {
 	fn test_view() {
 		let mut ok = true;
 		for (yaw, pitch, x1, y1, z1) in [
-			(0.0, 0.0, [0., 0., 2.], [-1., 0., 3.], [0., 1., 3.]),
-			(0.5, 0.0, [1., 0., 3.], [0., 0., 2.], [0., 1., 3.]),
-			(0.0, 0.5, [0., -1., 3.], [-1., 0., 3.], [0., 0., 2.]),
-			(0.5, 0.5, [1., 0., 3.], [0., -1., 3.], [0., 0., 2.]),
+			(0.0, 0.0, [0., 0., -4.], [-1., 0., -3.], [0., 1., -3.]),
+			(0.5, 0.0, [-1., 0., -3.], [0., 0., -2.], [0., 1., -3.]),
+			(0.0, 0.5, [0., 1., -3.], [-1., 0., -3.], [0., 0., -2.]),
+			(0.5, 0.5, [-1., 0., -3.], [0., -1., -3.], [0., 0., -2.]),
 		] {
 			let m = view(yaw * PI, pitch * PI, 3.);
 			for (label, world, expected) in
diff --git a/src/lib.rs b/src/lib.rs
index 111ea41..08c51c1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -19,7 +19,7 @@ impl Default for RedrawArgs {
 	fn default() -> Self {
 		Self {
 			background: vec4(0.25, 0.49, 0.93, 1.00),
-			cam_yaw: std::f32::consts::FRAC_PI_4,
+			cam_yaw: 3. * std::f32::consts::FRAC_PI_4,
 			cam_pitch: std::f32::consts::FRAC_PI_6,
 			cam_distance: 3.,
 			cam_fovy: std::f32::consts::FRAC_PI_2,
@@ -56,7 +56,7 @@ fn cube(a: f32, b: f32) -> render::mesh::CpuMeshIndexed {
 	] {
 		for m in [1., -1.] {
 			let base = mesh.vertices.len() as u16;
-			for offset in [m * v + u, -m * v + u, -m * v - u, m * v - u] {
+			for offset in [m * v + u, m * v - u, -m * v - u, -m * v + u] {
 				let vertex = render::mesh::Vertex {
 					position: (m * w + offset),
 					color: gray + color_level * m * w,
diff --git a/ui/src/main_window.ui b/ui/src/main_window.ui
index 71fced1..f6cdd02 100644
--- a/ui/src/main_window.ui
+++ b/ui/src/main_window.ui
@@ -71,7 +71,7 @@
            <double>5.000000000000000</double>
           </property>
           <property name="value">
-           <double>45.000000000000000</double>
+           <double>135.000000000000000</double>
           </property>
          </widget>
         </item>