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Added warning when clip matrix is not invertible 

Former-commit-id: 4707faab0259062ad619a5e5c72fcbbfaf853e3c
This commit is contained in:
Lynix 2013-08-22 10:50:53 +02:00
parent 5d0ed4f27c
commit 74d396a376
1 changed files with 46 additions and 42 deletions
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88
include/Nazara/Math/Frustum.inl
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@ -263,64 +263,68 @@ NzFrustum<T>& NzFrustum<T>::Extract(const NzMatrix4<T>& clipMatrix)
// Je me base sur cette page: http://www.gamedev.net/topic/393309-calculating-the-view-frustums-vertices/
NzMatrix4f invClipMatrix;
clipMatrix.GetInverse(&invClipMatrix);
NzVector4f corner;
if (clipMatrix.GetInverse(&invClipMatrix))
{
NzVector4f corner;
// FarLeftBottom
corner.Set(F(-1.0), F(-1.0), F(1.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
// FarLeftBottom
corner.Set(F(-1.0), F(-1.0), F(1.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
m_corners[nzCorner_FarLeftBottom] = NzVector3<T>(corner.x, corner.y, corner.z);
m_corners[nzCorner_FarLeftBottom] = NzVector3<T>(corner.x, corner.y, corner.z);
// FarLeftTop
corner.Set(F(-1.0), F(1.0), F(1.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
// FarLeftTop
corner.Set(F(-1.0), F(1.0), F(1.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
m_corners[nzCorner_FarLeftTop] = NzVector3<T>(corner.x, corner.y, corner.z);
m_corners[nzCorner_FarLeftTop] = NzVector3<T>(corner.x, corner.y, corner.z);
// FarRightBottom
corner.Set(F(1.0), F(-1.0), F(1.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
// FarRightBottom
corner.Set(F(1.0), F(-1.0), F(1.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
m_corners[nzCorner_FarRightBottom] = NzVector3<T>(corner.x, corner.y, corner.z);
m_corners[nzCorner_FarRightBottom] = NzVector3<T>(corner.x, corner.y, corner.z);
// FarRightTop
corner.Set(F(1.0), F(1.0), F(1.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
// FarRightTop
corner.Set(F(1.0), F(1.0), F(1.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
m_corners[nzCorner_FarRightTop] = NzVector3<T>(corner.x, corner.y, corner.z);
m_corners[nzCorner_FarRightTop] = NzVector3<T>(corner.x, corner.y, corner.z);
// NearLeftBottom
corner.Set(F(-1.0), F(-1.0), F(0.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
// NearLeftBottom
corner.Set(F(-1.0), F(-1.0), F(0.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
m_corners[nzCorner_NearLeftBottom] = NzVector3<T>(corner.x, corner.y, corner.z);
m_corners[nzCorner_NearLeftBottom] = NzVector3<T>(corner.x, corner.y, corner.z);
// NearLeftTop
corner.Set(F(-1.0), F(1.0), F(0.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
// NearLeftTop
corner.Set(F(-1.0), F(1.0), F(0.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
m_corners[nzCorner_NearLeftTop] = NzVector3<T>(corner.x, corner.y, corner.z);
m_corners[nzCorner_NearLeftTop] = NzVector3<T>(corner.x, corner.y, corner.z);
// NearRightBottom
corner.Set(F(1.0), F(-1.0), F(0.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
// NearRightBottom
corner.Set(F(1.0), F(-1.0), F(0.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
m_corners[nzCorner_NearRightBottom] = NzVector3<T>(corner.x, corner.y, corner.z);
m_corners[nzCorner_NearRightBottom] = NzVector3<T>(corner.x, corner.y, corner.z);
// NearRightTop
corner.Set(F(1.0), F(1.0), F(0.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
// NearRightTop
corner.Set(F(1.0), F(1.0), F(0.0));
corner = invClipMatrix.Transform(corner);
corner.Normalize();
m_corners[nzCorner_NearRightTop] = NzVector3<T>(corner.x, corner.y, corner.z);
m_corners[nzCorner_NearRightTop] = NzVector3<T>(corner.x, corner.y, corner.z);
}
else
NazaraWarning("Clip matrix is not invertible, failed to compute frustum corners");
return *this;
}