Real Time Magnifying Glass - Page 7

Adding Realism

Now we have to make the effect of dragging the magnifier over small picture look realistic. Because both the small (50% )picture and big (100%) picture are centrally aligned, we have to position the magnifier in the dead center to make it look realistic.

Because bigpic is 2 times bigger we have to move it in opposite direction of magnifier movement for double amount. (If we use 1:1 transformation ratio between the small and bigpic we multiply movement in opposite direction by 1, for ratio 1:2 we multiply with 2; with ratio 1:3 with 3).

You should also always use the Transform Inspector (Windows > Inspectors > Transform), because you will need to scale objects by exact amounts. If we mark bigpic to be 100% all the time then the formula would be 100% / SmallPic% = multiplying factor. In our case Multiplying Factor is 100% / 50% = 2. In actionscript I quoted previously I just added *2 (see below), so the final action script for the frame 2 would look like this:

Set Variable: "x_mask" = GetProperty (outline ,_x)
Set Variable: "y_mask" = GetProperty(outline,_y)
Set Property ("/outline/bigpic", X Position) = (200- x_mask)*2
Set Property ("/outline/bigpic", Y Position) = (200 - y_mask) * 2

There you go! If you have any problems don't forget that the flashkit board is available to answer any of your questions. You can also download the source file to pick apart at the bottom of this page. Good luck and happy flashing.