Interactive image overlays

[viktoras d.]

I am also always using graphics, not images when I need to display 
clickable or non-clickable irregularly shaped regions of larger images 
(maps, species pictures, etc.) It is very convenient, indeed, and it is 
easy to make them more responsive to user actions like for instance 
changing colors of border or background on mouse enter, mouse click, 
mouse leave, etc... Or even darkening color with each iteration of 
displaying, so that the first polygons displayed become gradually 
darker, and the last are always the most bright ones :-)

Best wishes
Viktoras

BNig wrote:
> it is well known but often overlooked that when using a graphic
> (transparent/noop) as an irregulary shaped 'hot spot' over an image that you
> can put two or more irregulary shaped areas into one graphic. You can do
> this by putting the points of the second graphic after the points of the
> first graphic but you separate them by an empty line.
> For example you have a map and you want to make the USA clickable but Alaska
> and Hawaii are not part of the contiguous USA. In that case you could make
> one graphic with the points of the continental USA appended by the points of
> Alaska and the points of Hawaii. You would only need one graphic to take
> care of the clicks to the USA.
> regards
> Bernd
>
> David Bovill-3 wrote:
>   
>> Thanks everyone - lots of great suggestions. Think the noop graphic is the
>> way to go for this application.
>>
>> NB I can get quite a nice rollover by using:
>>
>> on mouseEnter
>>     
>>>    set the ink of me to "blendDarken"
>>> end mouseEnter
>>>
>>> on mouseLeave
>>>    set the ink of me to "noop"
>>> end mouseLeave
>>>
>>>       
>> in the behavior of the overlay graphic.
>>
>>     
>
>