[vtkusers] Small question about the camera parallel scale

[Andrea Borsic]

I am not 100% sure of that, but I think it is likely so.

Cheers,

Andrea


On 10-Aug-16 10:08 AM, Elvis Stansvik wrote:
> 2016-08-10 10:05 GMT+02:00 Andrea Borsic <aborsic at ne-scientific.com 
> <mailto:aborsic at ne-scientific.com>>:
>
>     Hi Elvis,
>
>     Could it be that the height and width are probably measured from
>     the focal point to the border (thus 500 units would result in a
>     border to border height of 1000 units) ?
>
> Ah yes, this is probably what is meant with "viewport height" in the 
> documentation. I just wasn't aware of the terminology. Thanks.
>
> Elvis
>
>     Cheers,
>
>     Andrea
>
>
>     On 10-Aug-16 9:39 AM, Elvis Stansvik wrote:
>>     The docs for Get/SetParallelScale says:
>>
>>     "Set/Get the scaling used for a parallel projection, i.e. the
>>     height of the viewport in world-coordinate distances."
>>
>>     But it seems that the parallel scale is actually twice the height
>>     of the viewport in world-coordinate distances. E.g. if I want
>>     1000.0 units in world-coordinates to be visible in the vertical
>>     direction in the viewport, I should set the parallel scale of the
>>     camera to 500.0.
>>
>>     Am I missing something? Or is it just that I don't know the
>>     terminology, what does "height of the viewport" actually mean?
>>
>>     Thanks in advance,
>>     Elvis
>>
>>
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>     -- 
>     ++++++++++++++++++++++++++++++++++++
>     Andrea Borsic Ph.D.
>     CEO & Founder NE Scientific LLC
>     Tel:+1 603 676 7450 <tel:%2B1%20603%20676%207450>
>     Web:www.ne-scientific.com <http://www.ne-scientific.com>
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++++++++++++++++++++++++++++++++++++
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