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Fixed singularity check for quatLookAt #770

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christophe
2020-04-12 18:32:33 +02:00
parent 8aa60bbeff
commit b4c5bb6c1a
2 changed files with 5 additions and 2 deletions
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6
glm/gtc/quaternion.inl
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@@ -175,7 +175,8 @@ namespace glm
mat<3, 3, T, Q> Result;
Result[2] = -direction;
Result[0] = normalize(cross(up, Result[2]));
vec<3, T, Q> const& Right = cross(up, Result[2]);
Result[0] = Right * inversesqrt(max(static_cast<T>(0.00001), dot(Right, Right)));
Result[1] = cross(Result[2], Result[0]);
return quat_cast(Result);
@@ -187,7 +188,8 @@ namespace glm
mat<3, 3, T, Q> Result;
Result[2] = direction;
Result[0] = normalize(cross(up, Result[2]));
vec<3, T, Q> const& Right = cross(up, Result[2]);
Result[0] = Right * inversesqrt(max(static_cast<T>(0.00001), dot(Right, Right)));
Result[1] = cross(Result[2], Result[0]);
return quat_cast(Result);