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Author: salsaman
Date:  
To: Minimalistic plugin API for video effects
Subject: Re: [Frei0r] How should double be interpreted as screen positions?
In addition, I should have added, rotation offset adds 2*ro translation to
the frame in the opposite direction.

so: ro = 0.0, 0.0
x = 1.0, y=1.0

does exactly what you wanted.


Salsaman.


http://lives.sourceforge.net
https://www.ohloh.net/accounts/salsaman



On Tue, Nov 27, 2012 at 9:57 AM, salsaman <salsaman@???> wrote:

> That doesn't seem right...surely it should be symmetrical. Can you not add
> a rotation offset, so:
>
> rot_offset = 0.5 = rotate about center, rot offset 0. = rotate about
> top/left, 1.0 = rotate about bottom/right ?
>
> Salsaman.
>
>
>
> http://lives.sourceforge.net
> https://www.ohloh.net/accounts/salsaman
>
>
>
>
> On Tue, Nov 27, 2012 at 7:34 AM, Janne Liljeblad <
> janne.liljeblad@???> wrote:
>
>> Update for ranges.
>>
>> I actually really need to have 2 frame widths on right/down direction
>> too to allow for rotation before animating in, so the range
>> interpretation will be:
>>
>> 0 = top/left 2 frame widths left/up
>> 0.2 = top/left 1 frame width left/up
>> 0.4 = top/left aligned with dest image
>> 0.6 = top/left just out of dest image bottom/right corner
>> 0.8 = top/left 1 frame width down/right
>> 1.0 = top/left 2 frame widths down/right
>>
>>
>> Janne
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>>
>
>