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Math/Matrix4: Fix cotangent in projection matrix 

Former-commit-id: 57ccfc4fd2a1a8245272328204afa6590a5cb3fb
This commit is contained in:
Lynix 2015-06-26 14:05:50 +02:00
parent b7b5458c79
commit 7dd4965f9a
2 changed files with 5 additions and 1 deletions
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4
include/Nazara/Math/Algorithm.hpp
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@ -16,6 +16,10 @@
#define M_PI 3.141592653589793238462643
#endif
#ifndef M_PI_2
#define M_PI_2 1.5707963267948966192313217
#endif
#ifndef M_SQRT2
#define M_SQRT2 1.4142135623730950488016887
#endif

2
include/Nazara/Math/Matrix4.inl
View File

@ -623,7 +623,7 @@ NzMatrix4<T>& NzMatrix4<T>::MakePerspective(T angle, T ratio, T zNear, T zFar)
angle = NzDegreeToRadian(angle/F(2.0));
#endif
T yScale = F(1.0) / std::tan(angle);
T yScale = std::tan(M_PI_2 - angle);
Set(yScale / ratio, F(0.0), F(0.0), F(0.0),
F(0.0), yScale, F(0.0), F(0.0),