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Cleanup Frustum class

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This commit is contained in:
Georg Hagen
2025-01-11 20:23:09 +01:00
parent c976d75715
commit 4d91563233
1 changed files with 34 additions and 45 deletions
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79
openVulkanoCpp/Math/Frustum.hpp
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@@ -37,7 +37,7 @@ namespace OpenVulkano::Math
{} {}
// m = ProjectionMatrix * ViewMatrix // m = ProjectionMatrix * ViewMatrix
Frustum(Math::Matrix4f m) Frustum(Matrix4f m)
{ {
m = Math::Utils::transpose(m); m = Math::Utils::transpose(m);
m_planes[LEFT] = m[3] + m[0]; m_planes[LEFT] = m[3] + m[0];
@@ -48,21 +48,21 @@ namespace OpenVulkano::Math
m_planes[FAR] = m[3] - m[2]; m_planes[FAR] = m[3] - m[2];
Math::Vector3f crosses[COMBINATIONS] = { Math::Vector3f crosses[COMBINATIONS] = {
Math::Utils::cross(Math::Vector3f(m_planes[LEFT]), Math::Vector3f(m_planes[RIGHT])), Math::Utils::cross(Vector3f(m_planes[LEFT]), Vector3f(m_planes[RIGHT])),
Math::Utils::cross(Math::Vector3f(m_planes[LEFT]), Math::Vector3f(m_planes[BOTTOM])), Math::Utils::cross(Vector3f(m_planes[LEFT]), Vector3f(m_planes[BOTTOM])),
Math::Utils::cross(Math::Vector3f(m_planes[LEFT]), Math::Vector3f(m_planes[TOP])), Math::Utils::cross(Vector3f(m_planes[LEFT]), Vector3f(m_planes[TOP])),
Math::Utils::cross(Math::Vector3f(m_planes[LEFT]), Math::Vector3f(m_planes[NEAR])), Math::Utils::cross(Vector3f(m_planes[LEFT]), Vector3f(m_planes[NEAR])),
Math::Utils::cross(Math::Vector3f(m_planes[LEFT]), Math::Vector3f(m_planes[FAR])), Math::Utils::cross(Vector3f(m_planes[LEFT]), Vector3f(m_planes[FAR])),
Math::Utils::cross(Math::Vector3f(m_planes[RIGHT]), Math::Vector3f(m_planes[BOTTOM])), Math::Utils::cross(Vector3f(m_planes[RIGHT]), Vector3f(m_planes[BOTTOM])),
Math::Utils::cross(Math::Vector3f(m_planes[RIGHT]), Math::Vector3f(m_planes[TOP])), Math::Utils::cross(Vector3f(m_planes[RIGHT]), Vector3f(m_planes[TOP])),
Math::Utils::cross(Math::Vector3f(m_planes[RIGHT]), Math::Vector3f(m_planes[NEAR])), Math::Utils::cross(Vector3f(m_planes[RIGHT]), Vector3f(m_planes[NEAR])),
Math::Utils::cross(Math::Vector3f(m_planes[RIGHT]), Math::Vector3f(m_planes[FAR])), Math::Utils::cross(Vector3f(m_planes[RIGHT]), Vector3f(m_planes[FAR])),
Math::Utils::cross(Math::Vector3f(m_planes[BOTTOM]), Math::Vector3f(m_planes[TOP])), Math::Utils::cross(Vector3f(m_planes[BOTTOM]), Vector3f(m_planes[TOP])),
Math::Utils::cross(Math::Vector3f(m_planes[BOTTOM]), Math::Vector3f(m_planes[NEAR])), Math::Utils::cross(Vector3f(m_planes[BOTTOM]), Vector3f(m_planes[NEAR])),
Math::Utils::cross(Math::Vector3f(m_planes[BOTTOM]), Math::Vector3f(m_planes[FAR])), Math::Utils::cross(Vector3f(m_planes[BOTTOM]), Vector3f(m_planes[FAR])),
Math::Utils::cross(Math::Vector3f(m_planes[TOP]), Math::Vector3f(m_planes[NEAR])), Math::Utils::cross(Vector3f(m_planes[TOP]), Vector3f(m_planes[NEAR])),
Math::Utils::cross(Math::Vector3f(m_planes[TOP]), Math::Vector3f(m_planes[FAR])), Math::Utils::cross(Vector3f(m_planes[TOP]), Vector3f(m_planes[FAR])),
Math::Utils::cross(Math::Vector3f(m_planes[NEAR]), Math::Vector3f(m_planes[FAR])) Math::Utils::cross(Vector3f(m_planes[NEAR]), Vector3f(m_planes[FAR]))
}; };
m_points[0] = Intersection<LEFT, BOTTOM, NEAR>(crosses); m_points[0] = Intersection<LEFT, BOTTOM, NEAR>(crosses);
@@ -73,7 +73,6 @@ namespace OpenVulkano::Math
m_points[5] = Intersection<LEFT, TOP, FAR>(crosses); m_points[5] = Intersection<LEFT, TOP, FAR>(crosses);
m_points[6] = Intersection<RIGHT, BOTTOM, FAR>(crosses); m_points[6] = Intersection<RIGHT, BOTTOM, FAR>(crosses);
m_points[7] = Intersection<RIGHT, TOP, FAR>(crosses); m_points[7] = Intersection<RIGHT, TOP, FAR>(crosses);
} }
// http://iquilezles.org/www/articles/frustumcorrect/frustumcorrect.htm // http://iquilezles.org/www/articles/frustumcorrect/frustumcorrect.htm
@@ -96,35 +95,25 @@ namespace OpenVulkano::Math
} }
// check frustum outside/inside box // check frustum outside/inside box
int out; for (int j = 0, out = 0; j < 3; j++)
out = 0; {
for (int i = 0; i < 8; i++) out += ((m_points[i].x > maxp.x) ? 1 : 0); for (int i = 0; i < 8; i++) out += m_points[i][j] > maxp[j];
if (out == 8) return false; if (out == 8) return false;
out = 0; out = 0;
for (int i = 0; i < 8; i++) out += ((m_points[i].x < minp.x) ? 1 : 0); for (int i = 0; i < 8; i++) out += m_points[i][j] < minp[j];
if (out == 8) return false; if (out == 8) return false;
out = 0; out = 0;
for (int i = 0; i < 8; i++) out += ((m_points[i].y > maxp.y) ? 1 : 0); }
if (out == 8) return false;
out = 0;
for (int i = 0; i < 8; i++) out += ((m_points[i].y < minp.y) ? 1 : 0);
if (out == 8) return false;
out = 0;
for (int i = 0; i < 8; i++) out += ((m_points[i].z > maxp.z) ? 1 : 0);
if (out == 8) return false;
out = 0;
for (int i = 0; i < 8; i++) out += ((m_points[i].z < minp.z) ? 1 : 0);
if (out == 8) return false;
return true; return true;
} }
[[nodiscard]] bool IsBoxVisible(const Math::Vector4f& minp, const Math::Vector4f& maxp) const [[nodiscard]] bool IsBoxVisible(const Vector4f& minp, const Vector4f& maxp) const
{ {
return IsBoxVisible(Math::Vector3f(minp), Math::Vector3f(maxp)); return IsBoxVisible(Vector3f(minp), Vector3f(maxp));
} }
[[nodiscard]] bool IsBoxVisible(const Range<Math::Vector3f>& range) const [[nodiscard]] bool IsBoxVisible(const Range<Vector3f>& range) const
{ {
return IsBoxVisible(range.min, range.max); return IsBoxVisible(range.min, range.max);
} }
@@ -140,15 +129,15 @@ namespace OpenVulkano::Math
}; };
template<Planes a, Planes b, Planes c> template<Planes a, Planes b, Planes c>
Math::Vector3f Intersection(const Math::Vector3f* crosses) const Vector3f Intersection(const Vector3f* crosses) const
{ {
float D = Math::Utils::dot(Math::Vector3f(m_planes[a]), crosses[ij2k<b, c>::k]); float D = Math::Utils::dot(Vector3f(m_planes[a]), crosses[ij2k<b, c>::k]);
Math::Vector3f res = Math::Matrix3f(crosses[ij2k<b, c>::k], -crosses[ij2k<a, c>::k], crosses[ij2k<a, b>::k]) * Vector3f res = Matrix3f(crosses[ij2k<b, c>::k], -crosses[ij2k<a, c>::k], crosses[ij2k<a, b>::k]) *
Math::Vector3f(m_planes[a].w, m_planes[b].w, m_planes[c].w); Vector3f(m_planes[a].w, m_planes[b].w, m_planes[c].w);
return res * (-1.0f / D); return res * (-1.0f / D);
} }
Math::Vector4f m_planes[COUNT]; Vector4f m_planes[COUNT];
Math::Vector3f m_points[8]; Vector3f m_points[8];
}; };
} }