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Deduplicate code

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This commit is contained in:
Georg Hagen
2025-01-06 00:52:13 +01:00
parent 7ef6503a78
commit 6407f40f94
2 changed files with 31 additions and 77 deletions
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6
openVulkanoCpp/Math/Math.hpp
View File

@@ -52,6 +52,12 @@ namespace OpenVulkano::Math
}
return angle;
}
template<typename T>
constexpr void SortPair(T& e1, T& e2)
{
if (e1 > e2) std::swap(e1, e2);
}
}
template<typename T> using Matrix2_SIMD = glm::tmat2x2<T, glm::aligned>;

102
openVulkanoCpp/Scene/Ray.cpp
View File

@@ -10,12 +10,9 @@
namespace
{
int SolveQuadraticEquation(float a, float b, float c, float& x0, float& x1)
{
float discr = b * b - 4 * a * c;
if (discr < 0)
{
return 0;
}
{
const float discr = b * b - 4 * a * c;
if (discr < 0) return 0;
if (discr == 0)
{
x0 = x1 = (-b) / (2 * a);
@@ -24,10 +21,7 @@ namespace
float q = (b > 0) ? -0.5 * (b + std::sqrt(discr)) : -0.5 * (b - std::sqrt(discr));
x0 = q / a;
x1 = c / q;
if (x0 > x1)
{
std::swap(x0, x1);
}
OpenVulkano::Math::Utils::SortPair(x0, x1);
return 2;
}
};
@@ -50,10 +44,10 @@ namespace OpenVulkano::Scene
std::optional<RayHit> Ray::IntersectTriangle(const Math::Vector3f& v0, const Math::Vector3f& v1,
const Math::Vector3f& v2) const
{
RayHit hitRes;
float d;
if (intersectRayTriangle(m_origin, m_dir, v0, v1, v2, m_baryPos, d) && d >= 0)
{
RayHit hitRes;
hitRes.point = (1.f - m_baryPos.x - m_baryPos.y) * v0 + m_baryPos.x * v1 + m_baryPos.y * v2;
Math::Vector3f e = v1 - v0;
Math::Vector3f e2 = v2 - v0;
@@ -81,11 +75,11 @@ namespace OpenVulkano::Scene
std::optional<RayHit> Ray::IntersectQuad(const Math::Vector3f& v0, const Math::Vector3f& v1,
const Math::Vector3f& v2, const Math::Vector3f& v3) const
{
if (auto hitRes = IntersectTriangle(v0, v1, v2))
if (const auto hitRes = IntersectTriangle(v0, v1, v2))
{
return hitRes;
}
if (auto hitRes = IntersectTriangle(v0, v2, v3))
if (const auto hitRes = IntersectTriangle(v0, v2, v3))
{
return hitRes;
}
@@ -102,13 +96,8 @@ namespace OpenVulkano::Scene
{
RayHit h1, h2;
const int intersections = this->IntersectAABB(bbox, h1, h2);
switch (intersections)
{
case 1:
return h1;
case 2:
return (h1.distance2 < h2.distance2) ? h1 : h2;
}
if (intersections == 1) return h1;
if (intersections == 2) return (h1.distance2 < h2.distance2) ? h1 : h2;
return {};
}
@@ -117,18 +106,11 @@ namespace OpenVulkano::Scene
auto tmin = (bbox.min - m_origin) / m_dir;
auto tmax = (bbox.max - m_origin) / m_dir;
if (tmin.x > tmax.x)
{
std::swap(tmin.x, tmax.x);
}
if (tmin.y > tmax.y)
{
std::swap(tmin.y, tmax.y);
}
if ((tmin.x > tmax.y) || (tmin.y > tmax.x))
{
return 0;
}
SortPair(tmin.x, tmax.x);
SortPair(tmin.y, tmax.y);
SortPair(tmin.z, tmax.z);
if ((tmin.x > tmax.y) || (tmin.y > tmax.x)) return 0;
if (tmin.y > tmin.x)
{
@@ -138,16 +120,8 @@ namespace OpenVulkano::Scene
{
tmax.x = tmax.y;
}
if (tmin.z > tmax.z)
{
std::swap(tmin.z, tmax.z);
}
if ((tmin.x > tmax.z) || (tmin.z > tmax.x))
{
return 0;
}
if ((tmin.x > tmax.z) || (tmin.z > tmax.x)) return 0;
if (tmin.z > tmin.x)
{
@@ -161,10 +135,7 @@ namespace OpenVulkano::Scene
int intersections = 2;
if (tmin.x < 0)
{
if (tmax.x < 0)
{
return 0;
}
if (tmax.x < 0) return 0;
intersections--;
tmin.x = tmax.x;
}
@@ -197,39 +168,19 @@ namespace OpenVulkano::Scene
float x1, x2;
int roots = ::SolveQuadraticEquation(a, b, c, x1, x2);
if (roots == 0)
{
return 0;
}
if (x1 > x2)
{
std::swap(x1, x2);
}
if (roots == 0) return 0;
SortPair(x1, x2);
if (roots == 1)
{
// ray intersects sphere behind the origin
if (x1 < 0)
{
return 0;
}
p1.point = m_origin + x1 * m_dir;
p1.distance2 = distance2(m_origin, p1.point);
p1.normal = normalize(p1.point - center);
if (x1 < 0) return 0; // ray intersects sphere behind the origin
p2 = p1;
}
else if (roots == 2)
else
{
// ray intersects sphere behind the origin
if (x1 < 0 && x2 < 0)
{
return 0;
}
if (x1 < 0 && x2 < 0) return 0; // ray intersects sphere behind the origin
if (x1 >= 0 && x2 >= 0)
{
p1.point = m_origin + x1 * m_dir;
p1.distance2 = distance2(m_origin, p1.point);
p1.normal = normalize(p1.point - center);
p2.point = m_origin + x2 * m_dir;
p2.distance2 = distance2(m_origin, p2.point);
p2.normal = normalize(p2.point - center);
@@ -237,16 +188,13 @@ namespace OpenVulkano::Scene
else
{
--roots;
if (x1 < 0)
{
x1 = x2;
}
p1.point = m_origin + x1 * m_dir;
p1.distance2 = distance2(m_origin, p1.point);
p1.normal = normalize(p1.point - center);
if (x1 < 0) x1 = x2;
p2 = p1;
}
}
p1.point = m_origin + x1 * m_dir;
p1.distance2 = distance2(m_origin, p1.point);
p1.normal = normalize(p1.point - center);
return roots;
}