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