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This commit is contained in:
Simon Pribylski
2023-06-06 12:36:05 +02:00
parent a2b5424888
commit ccdcdac7c6
5 changed files with 38 additions and 21 deletions
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15
include/misc/Maths.h
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@@ -20,6 +20,11 @@ Vec3<T> operator- (const Vec3<T>& vect) {
return { -vect.x, -vect.y, -vect.z };
}
template<typename T>
Vec4<T> operator- (const Vec4<T>& vect) {
return { -vect.x, -vect.y, -vect.z, -vect.w };
}
template<typename T>
Vec3<T> operator+ (const Vec3<T>& vect, const Vec3<T>& other) {
return { vect.x + other.x, vect.y + other.y, vect.z + other.y };
@@ -70,10 +75,10 @@ T Dot(const Vec4<T>& vect, const Vec4<T>& other) {
template<typename T>
Vec4<T> Dot(const Mat4<T>& mat, const Vec4<T>& vect) {
return {
Dot(*reinterpret_cast<const Vec4<T>*>(&mat), vect),
Dot(*reinterpret_cast<const Vec4<T>*>(mat.data() + Mat4<T>::MATRIX_SIZE), vect),
Dot(*reinterpret_cast<const Vec4<T>*>(mat.data() + 2 * Mat4<T>::MATRIX_SIZE), vect),
Dot(*reinterpret_cast<const Vec4<T>*>(mat.data() + 3 * Mat4<T>::MATRIX_SIZE), vect),
mat.x0 * vect.x + mat.x1 * vect.y + mat.x2 * vect.z + mat.x3 * vect.w,
mat.y0 * vect.x + mat.y1 * vect.y + mat.y2 * vect.z + mat.y3 * vect.w,
mat.z0 * vect.x + mat.z1 * vect.y + mat.z2 * vect.z + mat.z3 * vect.w,
mat.w0 * vect.x + mat.w1 * vect.y + mat.w2 * vect.z + mat.w3 * vect.w
};
}
@@ -84,7 +89,7 @@ Mat4<T> Dot(const Mat4<T>& mat, const Mat4<T>& other) {
for (std::size_t i = 0; i < Mat4<T>::MATRIX_SIZE; i++) {
for (std::size_t j = 0; j < Mat4<T>::MATRIX_SIZE; j++) {
for (std::size_t k = 0; k < Mat4<T>::MATRIX_SIZE; k++) {
result.at(i, j) = mat.at(i, k) * other.at(k, j);
result.at(i, j) += mat.at(i, k) * other.at(k, j);
}
}
}