如何在谷歌街景中保存“缩放”图像

I have a problem to save "google street image view" when I zoom in or zoom out the pictue.

For example I have picture link something like this: http://maps.googleapis.com/maps/api/streetview?sensor=false&zoom=1.6600000000000001&heading=0&size=640x640&location=47.371693,8.535608000000025

is same with: http://maps.googleapis.com/maps/api/streetview?sensor=false&zoom=2.3200000000000003&heading=0&size=640x640&location=47.371693,8.535608000000025

But in this link zoom property makes no sense. Some other property maybe?

Thanks

Zoom property doesn't exist. You can zoom on an image by using fov property.

For example: http://maps.googleapis.com/maps/api/streetview?sensor=false&heading=0&size=640x640&location=47.371693,8.535608000000025&fov=20

From documentation:

fov (default is 90) determines the horizontal field of view of the image. The field of view is expressed in degrees, with a maximum allowed value of 120. When dealing with a fixed-size viewport, as with a Street View image of a set size, field of view in essence represents zoom, with smaller numbers indicating a higher level of zoom.

There is no zoom parameter at streetview image app.

You can use fov parameter instead of it.

zoom is between 0 - 5 // 5 is the closest point

fov is between 0 - 120 // 0 is the closest point

the easiest way to find fov from zoom:

var $fov = 120 - ((120 / 5) * zoom);