Hey DrMcCleod thanx for the test case - i've managed to use it to fix the fov calculations in both f9 and f10 versions. now you can use the fov property on the camera to either return or set the fov in the view. Please update your svn to test whether it works for you!
cheers Rob On Sun, Oct 11, 2009 at 1:52 AM, Rob Bateman <[email protected]> wrote: > Hey DrMcCleod > > i have a feeling fov is broken in away3d at present. this is certainly > something we want to fix, so any further information you can supply us with > (even a test file from your experiences with it) would help speed things up > in this area. the formulas should be sound, but there may be a problem to do > with the updating scripts in camera once a property has changed. > > Rob > > > > On Wed, Oct 7, 2009 at 11:24 AM, DrMcCleod <[email protected]> wrote: > >> >> Then again, this looks a bit odd to me. Surely the x term >> ( _camera.focus*_camera.zoom +_clipTop*_clipBottom) will always >> dominate here. Which explains why the result is always just under 180 >> degrees. >> Anyone know how this works? >> >> >> On Oct 7, 10:38 am, DrMcCleod <[email protected]> wrote: >> > Thanks, that should help me find out what is going on. >> > >> > On Oct 7, 12:23 am, Pavel Jacko <[email protected]> wrote: >> > >> > > //calculated from the arctan addition formula arctan(x) + arctan(y) = >> > > arctan(x + y / 1 - x*y) >> > > return Math.atan2(_clipTop - _clipBottom, _camera.focus*_camera.zoom + >> > > _clipTop*_clipBottom)*toDEGREES; >> > >> > > this is in function getFOV() implemented by ILens interface >> > > you can have closer look if you go to away3d.cameras.lenses package >> > > and open some lenses class. >> > >> > > Hope this helps little bit. >> > >> > > Pavel >> > >> > > On Oct 6, 3:31 pm, DrMcCleod <[email protected]> wrote: >> > >> > > > I need to explicitly set the Field of View angle of my camera but I >> am >> > > > having trouble doing so. >> > >> > > > example: >> > >> > > > (in constructor) >> > > > { >> > > > boundCamera = new Camera3D( { x:0, y:0, z: -100} ); >> > > > boundCamera.lens = new ZoomFocusLens(); >> > >> > > > boundCamera.moveTo(0, 0, 0); >> > > > boundCamera.centerPivot(); >> > >> > > > boundCamera.fov = 30; >> > > > boundCamera.zoom = 1; >> > >> > > > } >> > >> > > > (in enterFrameListener) >> > > > { >> > > > trace("fov: " + boundCamera.fov + " z: " + boundCamera.zoom + " f: " >> + >> > > > boundCamera.focus); >> > >> > > > } >> > >> > > > When the program containing this code runs, the trace returns... >> > >> > > > fov: 179.489... z: 1 f: 100 >> > >> > > > And sure enough, the view looks very wide. >> > > > What should I do to explicitly set the field of view, so in >> genuinely >> > > > renders the correct angle? >> > >> > > > In fact, what is the calculation that relates fov to zoom and focus? >> > > > It does not seem to be the same as Papervision >> > > > > -- > Rob Bateman > Flash Development & Consultancy > > [email protected] > www.infiniteturtles.co.uk > www.away3d.com > -- Rob Bateman Flash Development & Consultancy [email protected] www.infiniteturtles.co.uk www.away3d.com
