Question CinemachineMixingCamera with POV cameras.

I'm trying to create an orbital vehicle camera rig that blends between two cameras based on the vehicle's speed. I'm using a CinemachineMixingCamera with two pov cameras and using the speed to control the weights.

However when changing the weights the pov values aren't being inherited like they would if I were blending between two virtual cameras with Inherit Position checked.

As the vehicle's speed changes, this causes the camera to blend back to a different position if the pov values of one of the virtual cameras has been changed.

Any suggestions? Is this the correct approach?

 

Thanks, but no good unfortunately. I was using the cinemachine input provider but have removed and confirmed the same thing happens with mouse events. Both cameras are live but only 1 of the povs appears to recieve the input events.

 

Ah yeah you're right, I've got it working. I'm on 2022.2.0b10 and using 0.001f as a small weight value.

I narrowed down the issue I was having by manually changing one of the weights in the MixingCamera inspector and noticed it blended correctly. However in my code I was changing both weights during the same LateUpdate:

Code (CSharp):

1. float lNormalisedSpeed = Mathf.Clamp01(lSpeed / m_FarCameraMinSpeed);
2. mMixerCamera.SetWeight(0, Mathf.Max(1.0f - lNormalisedSpeed, 0.001f));
3. mMixerCamera.SetWeight(1, lNormalisedSpeed);

I've changed my code to only update one of the weights and that's fixed my issue:

Code (CSharp):

1. float lNormalisedSpeed = Mathf.Clamp01(lSpeed / m_FarCameraMinSpeed);
2. mMixerCamera.SetWeight(0, Mathf.Lerp(0.001f, 2.0f, lNormalisedSpeed));

Perhaps the pov values aren't being updated during the same frame the weights are set causing them to become out of sync?

 

The Brain Update Method is set to Smart Update and the Blend Update Method is set to Late update.

I'm also setting the weights in LateUpdate, that correct?

 

I think I've figured out what was happening.

You're absolutely right about being able to set both weights in the same frame and needing a very small weight (0.001 was fine in the end). However if one of the weights is set to 0 when the camera first becomes active it'll throw off the pov values (even if you then change the weight to something greater than 0).

My issue was that during the first frame of the camera becoming active (but before my code to clamp the weight to a very small value), it's weight was unintentionally being set to 0.

Hope that makes sense?

Thanks for your help, let me know if you need any more info.