var fov = 3.9018*Math.pow(zoom,2) - 42.432*zoom + 123; Might be one possible formular.
I used Excel to make that. Plotted your values as a scatter graph. Add a trendline for the graph (right click the line, and add Trendline) In the options for the trendline, is an option to display the equation to make the line. On Sat, Nov 5, 2011 at 6:39 PM, JD Gauchat <[email protected]> wrote: > > Hi Keir. Thanks! But the correct formula apparently is logarithmic (the > formula of the example you showed is just multiplying by 16 the value of > zoom, which is inaccurate). I couldn't figure out how to make it, so I came > up with a list of predefined values I got comparing images and then just > round the value of zoom to get only the 6 possibles integers. > Here are the values I got: > zoom=0 ----> fov=120 > zoom=1 ----> fov=90 > zoom=2 ----> fov=53.5 > zoom=3 ----> fov=28.3 > zoom=4 ----> fov=14.3 > zoom=5 ----> fov=10 > So, when the zoom is 0, the fov value is 120, when the zoom is 2, the fov > value has to be 53.5, and so on. > Since the zoom value is not always an integer, I rounded the number before > to get the value of fov. Here is the code: > var values=[120, 90, 53.5, 28.3, 14.3, 10]; > var zoom=panorama.getPov().zoom; > var fov=values[Math.round(zoom)]; > I generated an array with the values of fov I got comparing images, then get > the value of zoom from the streetview window and then rounded this value to > get the right fov. > The result of this is more approximate than your example, but it will be > better to have to proper math formula. If some one is better than me in > mathematics and can figure it out, please share! :-) > Thank you all > JD > > > -- > You received this message because you are subscribed to the Google Groups > "Google Maps JavaScript API v3" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/google-maps-js-api-v3/-/N3jclP06TQkJ. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/google-maps-js-api-v3?hl=en. > -- You received this message because you are subscribed to the Google Groups "Google Maps JavaScript API v3" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-maps-js-api-v3?hl=en.
