voxel/kubi
1
1
Fork 0
mirror of https://github.com/griffi-gh/kubi.git synced 2024-11-29 02:08:48 -06:00
Code Issues Packages Projects Releases Wiki Activity

fix

Browse source
This commit is contained in:
griffi-gh 2023-01-27 22:17:30 +01:00
parent 5b4f54a19e
commit fe5bafdd35
1 changed files with 33 additions and 29 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

62
src/camera/frustum.rs
View file

@ -78,18 +78,17 @@ impl Frustum {
Self { planes, points }
}
//this may be broken
pub fn is_box_visible(&self, minp: Vec3, maxp: Vec3) -> bool {
// check box outside/inside of frustum
for i in 0..PLANE_COUNT {
if self.planes[i].dot(vec4(minp.x, minp.y, minp.z, 1.)) < 0. &&
self.planes[i].dot(vec4(maxp.x, minp.y, minp.z, 1.)) < 0. &&
self.planes[i].dot(vec4(minp.x, maxp.y, minp.z, 1.)) < 0. &&
self.planes[i].dot(vec4(maxp.x, maxp.y, minp.z, 1.)) < 0. &&
self.planes[i].dot(vec4(minp.x, minp.y, maxp.z, 1.)) < 0. &&
self.planes[i].dot(vec4(maxp.x, minp.y, maxp.z, 1.)) < 0. &&
self.planes[i].dot(vec4(minp.x, maxp.y, maxp.z, 1.)) < 0. &&
self.planes[i].dot(vec4(maxp.x, maxp.y, maxp.z, 1.)) < 0.
for plane in self.planes {
if (plane.dot(vec4(minp.x, minp.y, minp.z, 1.)) < 0.) &&
(plane.dot(vec4(maxp.x, minp.y, minp.z, 1.)) < 0.) &&
(plane.dot(vec4(minp.x, maxp.y, minp.z, 1.)) < 0.) &&
(plane.dot(vec4(maxp.x, maxp.y, minp.z, 1.)) < 0.) &&
(plane.dot(vec4(minp.x, minp.y, maxp.z, 1.)) < 0.) &&
(plane.dot(vec4(maxp.x, minp.y, maxp.z, 1.)) < 0.) &&
(plane.dot(vec4(minp.x, maxp.y, maxp.z, 1.)) < 0.) &&
(plane.dot(vec4(maxp.x, maxp.y, maxp.z, 1.)) < 0.)
{
return false
}
@ -97,35 +96,40 @@ impl Frustum {
// check frustum outside/inside box
let mut out: u8 = 0;
for i in 0..POINT_COUNT {
out += (self.points[i].x > maxp.x) as u8;
if out == 8 { return false }
for point in self.points {
out += (point.x > maxp.x) as u8;
}
if out == 8 { return false }
let mut out: u8 = 0;
for i in 0..POINT_COUNT {
out += (self.points[i].x < minp.x) as u8;
if out == 8 { return false }
for point in self.points {
out += (point.x < minp.x) as u8;
}
if out == 8 { return false }
let mut out: u8 = 0;
for i in 0..POINT_COUNT {
out += (self.points[i].y > maxp.y) as u8;
if out == 8 { return false }
for point in self.points {
out += (point.y > maxp.y) as u8;
}
if out == 8 { return false }
let mut out: u8 = 0;
for i in 0..POINT_COUNT {
out += (self.points[i].y < minp.y) as u8;
if out == 8 { return false }
for point in self.points {
out += (point.y < minp.y) as u8;
}
if out == 8 { return false }
let mut out: u8 = 0;
for i in 0..POINT_COUNT {
out += (self.points[i].z > maxp.z) as u8;
if out == 8 { return false }
for point in self.points {
out += (point.z > maxp.z) as u8;
}
if out == 8 { return false }
let mut out: u8 = 0;
for i in 0..POINT_COUNT {
out += (self.points[i].z < minp.z) as u8;
if out == 8 { return false }
for point in self.points {
out += (point.z < minp.z) as u8;
}
if out == 8 { return false }
true
}
@ -138,7 +142,7 @@ fn intersection<const A: usize, const B: usize, const C: usize>(planes: &[Vec4;
let d = Vec3A::from(planes[A]).dot(crosses[ij2k::<B, C>()]);
let res = Mat3A::from_cols(
crosses[ij2k::<B, C>()],
crosses[ij2k::<A, C>()],
-crosses[ij2k::<A, C>()],
crosses[ij2k::<A, B>()],
) * vec3a(planes[A].w, planes[B].w, planes[C].w);
res * (-1. / d)