Members - Reputation: 281
Posted 17 December 2012 - 05:22 PM
I have 2 meshes, turret base and the turret itself. I am trying to attach a particle emitter to the ends of the turret where the cube is like this:
I just rotate the turret mesh around the y axis and it looks like its aiming for something, but I tried to rotate the cube around the turret using the same rotation matrix and it never aligns properly
Is there some different way I should be doing this? do I really need to use bones and animation files for this? there must be a simpler way of handling this.
Crossbones+ - Reputation: 4029
Posted 17 December 2012 - 07:26 PM
parentMatrix = the transform of the turret's base (the part that does not rotate)
targetPos = world position of the target
turretPos = world position of the turret
direction = Normalize(targetPos - turretPos);
// Optionally constrain the direction to a plane if you only want the turret piece to rotate on a plane.
direction = parentMatrix.InverseTransformDirection(direction); // convert world direction to local direction
// Generate a quaternion from the direction and local up vector. (my solution is Unity-specific using the LookRotation method)
// Interpolate the turret's orientation towards the quaternion. (my solution is Unity-specific using the RotateTowards method)
Edited by Nypyren, 17 December 2012 - 07:26 PM.