modify html instructions from a sketch

fabwoj

modify html instructions from a sketch

in Integration and Hardware • 2 years ago

Hi,

In the source of an html page I have this : var latlng = new google.maps.LatLng(49.44305, 1.1025);
I would like to modify 49.44305 and 1.1025 from a sketch running in the same page. Is it possible ?
Thanks

Replies(2)

mbraendle

Re: modify html instructions from a sketch

2 years ago

Yes,

you need the Netscape.JavaScript libraries. See http://www.processing.org/reference/libraries/ and the link given there for Netscape.JavaScript for more detailled info.

It could go along the following line:

In your javascript code:

embed the variable assignment into a function:

var latlng;

var setLatLng = function(latitude,longitude) {

latlng = new google.maps.LatLng(latitude,longitude);

}

In your processing sketch:

- in the preamble:

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import netscape.javascript.*;
JSObject window;

- in your setup() method:

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try {
window = JSObject.getWindow(this);
} catch (JSException e) {
println("Standalone application");
}

- in your method where you would like to pass the parameters:

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try {
window.eval("setLatLng(" + mylatitude + "," + mylongitude + ")");
} catch (JSException e) {
) catch (NullPointerException e) {
}

fabwoj

Re: modify html instructions from a sketch

2 years ago

It's good mbraendle ! Thank you !

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