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Signed-off-by: Slendi <slendi@socopon.com>
This commit is contained in:
Slendi
2025-12-06 23:01:49 +02:00
parent b5e0aabe37
commit 2d86e02038
1 changed files with 34 additions and 14 deletions
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48
include/smath.hpp
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@@ -741,6 +741,14 @@ template <typename T>
return res;
}
template <typename T>
[[nodiscard]] inline auto translate(Vec<2, T> const &v) -> Mat<3, 3, T> {
Mat<3, 3, T> res{1};
res[2].x() = v.x();
res[2].y() = v.y();
return res;
}
template <typename T>
[[nodiscard]] inline auto rotate(Mat<3, 3, T> const &m, T const angle)
-> Mat<3, 3, T> {
@@ -793,6 +801,16 @@ template <typename T>
return res;
}
template <typename T>
[[nodiscard]] inline auto translate(Vec<3, T> const &v) -> Mat<4, 4, T> {
Mat<4, 4, T> res{1};
res[3].x() = v.x();
res[3].y() = v.y();
res[3].z() = v.z();
return res;
}
template <typename T>
[[nodiscard]] inline auto rotate(Mat<4, 4, T> const &m, T const angle)
-> Mat<4, 4, T> {
@@ -871,24 +889,26 @@ matrix_ortho3d(T const left, T const right, T const bottom, T const top,
template <typename T>
inline auto matrix_perspective(T fovy, T aspect, T znear, T zfar,
bool flip_z_axis = false) -> Mat<4, 4, T> {
Mat<4, 4, T> m{};
Mat<4, 4, T> m{};
T const f{1 / std::tan(fovy / T(2))};
T const f{T(1) / std::tan(fovy / T(2))};
m(0, 0) = f / aspect;
m(1, 1) = f;
m[0, 0] = f / aspect;
m[1, 1] = f;
if (!flip_z_axis) {
m(2, 2) = -(zfar + znear) / (zfar - znear);
m(2, 3) = -(T(2) * zfar * znear) / (zfar - znear);
m(3, 2) = -1;
} else {
m(2, 2) = (zfar + znear) / (zfar - znear);
m(2, 3) = (T(2) * zfar * znear) / (zfar - znear);
m(3, 2) = 1;
}
if (!flip_z_axis) {
m[2, 2] = -(zfar + znear) / (zfar - znear);
m[2, 3] = -(T(2) * zfar * znear) / (zfar - znear);
m[3, 2] = -1;
m[3, 3] = 0;
} else {
m[2, 2] = (zfar + znear) / (zfar - znear);
m[2, 3] = (T(2) * zfar * znear) / (zfar - znear);
m[3, 2] = 1;
m[3, 3] = 0;
}
return m;
return m;
}
template <typename T>