I had a scene file where focal blur did not behave as I expected after a
camera transform.

camera{
    location -z look_at 0
   transform{Gregs_camera_transform}
}

Where Gregs_camera_transform is a function of  splines which determine look
at & position as a function of clock.  It needs to be a transform because
I'm using the same transform on my captions.


Then I tried to add focal blur and did not get at all what I expected.
Could someone who understands how the camera works tell me exactly how you'd
add focal blur to the above syntax?

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On Thu, 15 May 2003 09:09:42 -0400, "Greg M. Johnson" <gregj:-)565### [at] aolcom>
wrote:
> I had a scene file where focal blur did not behave as I expected after a
> camera transform.
>
> camera{
>   location -z look_at 0
>   transform{Gregs_camera_transform}
> }
>
> Where Gregs_camera_transform is a function of  splines which determine look
> at & position as a function of clock.  It needs to be a transform because
> I'm using the same transform on my captions.

If it is a transform than you can just use

 camera{
   location -z look_at vtransform(<0,0,0>,Gregs_camera_transform)
 }

> Then I tried to add focal blur and did not get at all what I expected.
> Could someone who understands how the camera works tell me exactly how you'd
> add focal blur to the above syntax?

I have no idea what your transformation is exactly but it can be important that
(what I see in sources) transformation is not applied to focal_blur parameters.
Perhaps transformation should be also added to normal of camera.

ABX

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