matrix: fix transposed matrix in look_at
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parent
e2b4e48315
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6054fd59a2
18
matrix.cpp
18
matrix.cpp
@ -280,16 +280,18 @@ matrix<S,T>::look_at (util::point<3,T> eye,
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util::point<3,T> target,
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util::vector<3,T> up)
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{
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const auto f = normalised (target - eye);
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const auto s = normalised (cross (f, up));
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const auto u = cross (s, f);
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auto forward = normalised (eye.to (target));
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auto side = normalised (cross (forward, up));
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up = cross (side, forward);
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return { {
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{ s.x, s.y, s.z, -dot (s, eye) },
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{ u.x, u.y, u.z, -dot (u, eye) },
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{ -f.x, -f.y, -f.z, dot (f, eye) },
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{ 0, 0, 0, 1 },
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auto rot = util::matrix4<T> {{
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{ side[0], up[0], -forward[0], 0 },
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{ side[1], up[1], -forward[1], 0 },
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{ side[2], up[2], -forward[2], 0 },
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{ 0, 0, 0, 1 }
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}};
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return util::matrix4<T>::translation (-eye.template as<vector> ()) * rot;
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}
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