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Optimize BoundingFrustum contains/intersects test

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This commit is contained in:
Wojciech Figat
2022-06-13 12:38:18 +02:00
parent 78afe60343
commit ca0c3eb7d6
2 changed files with 18 additions and 65 deletions
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63
Source/Engine/Core/Math/BoundingFrustum.cpp
View File

@@ -63,23 +63,9 @@ void BoundingFrustum::SetMatrix(const Matrix& matrix)
Plane BoundingFrustum::GetPlane(int32 index) const
{
switch (index)
{
case 0:
return _pLeft;
case 1:
return _pRight;
case 2:
return _pTop;
case 3:
return _pBottom;
case 4:
return _pNear;
case 5:
return _pFar;
default:
if (index > 5)
return Plane();
}
return _planes[index];
}
static Vector3 Get3PlanesInterPoint(const Plane& p1, const Plane& p2, const Plane& p3)
@@ -151,27 +137,7 @@ ContainmentType BoundingFrustum::Contains(const Vector3& point) const
PlaneIntersectionType planeResult = PlaneIntersectionType::Front;
for (int i = 0; i < 6; i++)
{
switch (i)
{
case 0:
planeResult = _pNear.Intersects(point);
break;
case 1:
planeResult = _pFar.Intersects(point);
break;
case 2:
planeResult = _pLeft.Intersects(point);
break;
case 3:
planeResult = _pRight.Intersects(point);
break;
case 4:
planeResult = _pTop.Intersects(point);
break;
case 5:
planeResult = _pBottom.Intersects(point);
break;
}
const PlaneIntersectionType planeResult = _planes[i].Intersects(point);
switch (planeResult)
{
case PlaneIntersectionType::Back:
@@ -193,30 +159,9 @@ ContainmentType BoundingFrustum::Contains(const Vector3& point) const
ContainmentType BoundingFrustum::Contains(const BoundingSphere& sphere) const
{
auto result = PlaneIntersectionType::Front;
auto planeResult = PlaneIntersectionType::Front;
for (int i = 0; i < 6; i++)
{
switch (i)
{
case 0:
planeResult = _pNear.Intersects(sphere);
break;
case 1:
planeResult = _pFar.Intersects(sphere);
break;
case 2:
planeResult = _pLeft.Intersects(sphere);
break;
case 3:
planeResult = _pRight.Intersects(sphere);
break;
case 4:
planeResult = _pTop.Intersects(sphere);
break;
case 5:
planeResult = _pBottom.Intersects(sphere);
break;
}
const PlaneIntersectionType planeResult = _planes[i].Intersects(sphere);
switch (planeResult)
{
case PlaneIntersectionType::Back:

20
Source/Engine/Core/Math/BoundingFrustum.h
View File

@@ -14,12 +14,20 @@ API_STRUCT(InBuild) struct FLAXENGINE_API BoundingFrustum
{
private:
Matrix _matrix;
Plane _pNear;
Plane _pFar;
Plane _pLeft;
Plane _pRight;
Plane _pTop;
Plane _pBottom;
union
{
struct
{
Plane _pNear;
Plane _pFar;
Plane _pLeft;
Plane _pRight;
Plane _pTop;
Plane _pBottom;
};
Plane _planes[6];
};
public:
/// <summary>