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Implement get_frustum_corners

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Charlton Rodda
2023-11-04 21:17:54 +00:00
parent e2c09c2f4c
commit 0880d3cf2d
1 changed files with 21 additions and 0 deletions
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21
src/xr_input/xr_camera.rs
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@@ -1,6 +1,7 @@
use crate::xr_input::{QuatConv, Vec3Conv}; use crate::xr_input::{QuatConv, Vec3Conv};
use crate::{LEFT_XR_TEXTURE_HANDLE, RIGHT_XR_TEXTURE_HANDLE}; use crate::{LEFT_XR_TEXTURE_HANDLE, RIGHT_XR_TEXTURE_HANDLE};
use bevy::core_pipeline::tonemapping::{DebandDither, Tonemapping}; use bevy::core_pipeline::tonemapping::{DebandDither, Tonemapping};
use bevy::math::Vec3A;
use bevy::prelude::*; use bevy::prelude::*;
use bevy::render::camera::{CameraProjection, CameraRenderGraph, RenderTarget}; use bevy::render::camera::{CameraProjection, CameraRenderGraph, RenderTarget};
use bevy::render::primitives::Frustum; use bevy::render::primitives::Frustum;
@@ -216,6 +217,26 @@ impl CameraProjection for XRProjection {
fn far(&self) -> f32 { fn far(&self) -> f32 {
self.far self.far
} }
fn get_frustum_corners(&self, z_near: f32, z_far: f32) -> [Vec3A; 8] {
let tan_angle_left = self.fov.angle_left.tan();
let tan_angle_right = self.fov.angle_right.tan();
let tan_angle_bottom = self.fov.angle_down.tan();
let tan_angle_top = self.fov.angle_up.tan();
// NOTE: These vertices are in the specific order required by [`calculate_cascade`].
[
Vec3A::new(tan_angle_right, tan_angle_bottom, 1.0) * z_near, // bottom right
Vec3A::new(tan_angle_right, tan_angle_top, 1.0) * z_near, // top right
Vec3A::new(tan_angle_left, tan_angle_top, 1.0) * z_near, // top left
Vec3A::new(tan_angle_left, tan_angle_bottom, 1.0) * z_near, // bottom left
Vec3A::new(tan_angle_right, tan_angle_bottom, 1.0) * z_far, // bottom right
Vec3A::new(tan_angle_right, tan_angle_top, 1.0) * z_far, // top right
Vec3A::new(tan_angle_left, tan_angle_top, 1.0) * z_far, // top left
Vec3A::new(tan_angle_left, tan_angle_bottom, 1.0) * z_far, // bottom left
]
}
} }
pub fn xr_camera_head_sync( pub fn xr_camera_head_sync(