Re: Motion Effects - Keyframed parameters sending messages to behaviours?
Re: Motion Effects - Keyframed parameters sending messages to behaviours?
- Subject: Re: Motion Effects - Keyframed parameters sending messages to behaviours?
- From: Darrin Cardani <email@hidden>
- Date: Tue, 28 Jun 2011 15:27:46 -0700
I discussed this with the designer of the 4 point matte filter, and he said that he also attempted to do something similar, but ran into problems. We have a bug on the issue, but apparently it isn't possible at this time.
Darrin
On Jun 27, 2011, at 5:41 PM, Alex Gollner wrote:
>
> In order to get to know Motion Effects for Final Cut Pro X, I thought I
> could produce a slightly improved Mask effect.
>
> A couple of years ago, I created an 8-point Matte plug-in using FxScript -
> as well as having 8 points, the matte can be positioned, scaled and rotated.
> This is used by at least one US TV show for quick comps in Final Cut 7.
>
> I wanted to change the OSC used in the standard Mask filter to that of the
> 'Perspective Tile' filter.
>
> The benefit being once a four-point mask is created, the OSC allows for two
> or four of the points to be modified at the same time (using the edge,
> centre and rotation controls).
>
> The Effect method is to use the 'Link' behaviour to position four
> cross-hairs images at the same location as the controls of the 'Perspective
> Tile' filter. Then the four points of the masking rectangle are set to match
> the four cross-hairs images using the 'Track Points' behaviour.
>
> i.e.
>
> 'Perspective Tile' controls -> Link -> 4 crosshairs images -> Track points
> -> Four co-ordinates of rectangle -> image mask effect -> Effect Source
> layer
>
> This worked fine until I published the four control points of the
> 'Perspective Tile' filter so that FCP users can animate the four points
> using keyframes.
>
> Unfortunately, in Final Cut, the 'Track Points' behaviour doesn't evaluate
> more than once. This means that although it is possible to keyframe the mask
> controls, the updated positions aren't passed to the masking rectangle.
>
> Is the lack of keyframing due to a mistake in my Motion effect construction,
> or is it a bug in Motion 5 or Final Cut Pro X?
>
>
>
> Alex Gollner
> ............................................................................
>
>
> Screenwriter, Zone 2-North West, London
>
> alex4d on twitter, facebook, .wordpress.com & .com
>
>
>
>
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Darrin Cardani
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