CODEWITHSUNDEEP
c++mathvectorrotationquaternions
Tom J Nowell
Tom J Nowell

Reputation: 9981

Quaternion Cameras and projectile vectors

In our software we have a camera based on mouse movement, and a quarternion at its heart.

We want to fire projectiles from this position, which we can do, however we want to use the camera to aim. The projectile takes a vector which it will add to its position each game frame.

How do we acquire such a vector from a given camera/quaternion?

Upvotes: 3

Views: 1532

Answers (1)

kloffy
kloffy

Reputation: 2928

The quaternion doesn't represent a direction, it represents a rotation. You can define a vector that points in the direction that your camera is pointing initially (e.g. (0,0,1)) and transform it using the rotation represented by the quaternion.

Upvotes: 12

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