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added multiply factor for source engine matrix

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Orange
2024-12-01 22:02:16 +03:00
parent 5473515ffd
commit 04a5535ade
1 changed files with 6 additions and 4 deletions
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10
include/omath/engines/source.hpp
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@@ -49,15 +49,17 @@ namespace omath::source
}
template<class Type>
requires std::is_floating_point_v<Type> || std::is_integral_v<Type>
requires std::is_arithmetic_v<Type> && std::is_signed_v<Type>
[[nodiscard]] Mat<4, 4, Type, MatStoreType::ROW_MAJOR>
PerspectiveProjectionMatrix(const Type& fieldOfView, const Type& aspectRatio, const Type& near, const Type& far)
{
const float fovHalfTan = std::tan(angles::DegreesToRadians(fieldOfView) / 2);
constexpr auto kMultiplyFactor = Type(0.75);
const float fovHalfTan = std::tan(angles::DegreesToRadians(fieldOfView) / 2) * kMultiplyFactor;
return {
{static_cast<Type>(1) / (aspectRatio * fovHalfTan), 0, 0, 0},
{0, static_cast<Type>(1) / (fovHalfTan), 0, 0},
{-static_cast<Type>(1) / (aspectRatio * fovHalfTan), 0, 0, 0},
{0, -static_cast<Type>(1) / (fovHalfTan), 0, 0},
{0, 0, (far + near) / (far - near), -(static_cast<Type>(2) * far * near) / (far - near)},
{0, 0, 1, 0},
};