[Geotools-gt2-users] Coordinate System

[<Fre...@ao...>]

Hi all, 
I have a problem concerning Coordinate system : I have two applications : 
1) A canvas which is used to draw line with mouse
2) the SIG application (with the map, layers, ...)

I would like to take the coordinates of the line I drawed in the application 1, and transform them in order to draw it on the map (with the others coordinates).

I saw in the tutorial the method "transform.transform (point, point)" ...
But how can I obtain the coordinate information of my first application (where I draw line) .. I don't understand the parameters we can find in the wkt ... Is there a norm in windows Jframe or Canvas to find easely the wkt ?

Moreover, i meet the following problem : when I take the coordinate of the mouse when I click on a layer, the x varies between 793480 and 800000 and the y is around of 2094912 (I use getMapCoordinate)... and when I display the result of : mapPane.getCoordinateSystem().toWKT(), I obtain : LOCAL_CS["Cartésien", LOCAL_DATUM["Inconnu", 32767], UNIT["mètre",1.0], AXIS["x",EAST], AXIS["y",NORTH]] ... Is it the real coordinate system of the active layer ?? Because, it seems different of the coordinate I find by clicking on the map ...

It would be nice to help me because I don't understand lots of thing in the specifial terms of the coordinate system ... :-)
Thank's ...

Frederic