Multiple Cameraviews with perfly/ libpfui

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Guenter Schreiber (Guenter.Schreiber++at++dlr.de)
Fri, 19 Feb 1999 15:19:29 +0100

Hello pfAll,

Well, I like to switch multiple views with the "perfly " program.
And now I'm digging deep within the libpfui.
My question is:
perfly uses the pfiTDFXformer to manage its viewing port/ mouse
interactions to manipulate the viewmatrix and position

a) which fields of the pfiTDFXformer do I need to store/ modify to
change a specific view and
    reset it again to this View, or which consistency routines should I
call within perfly
    to get perfly up to date.

    I used here a lot of the set/get routines ,
    like setCoord, setModelMat, setMat and so on,

    But as perfly called ViewState -> xformer -> update(),
    all changes to the "ViewState -> sceneDCS" have vanished.

b) If this does not help enough, can I use multiple pfiTDFXformer for
the same window?
   which fiels do I have to copy, or to set properly to obtain the same
behaviour, than with one ?
   actually, I tried this and had a lot of trouble with the
translational travelling speed,
   which was far to slow.

c) Is there any more documentation than a nearly comment free code
in
        /usr/share/Performer/src/lib/libpfui ?
   At least some of the philosophies of the underlying Input classes,
   since for the next step, I'd like to integrate the SpaceMouse into
Performer, so I have to
   understand, what is going on within pfiInputXformTrackball,
pfiXformer and so on..

-- 
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