I'm about to begin on a project for work where a user has the ability
to select
areas on a map by clicking and dragging his mouse over and area. When
the person is finished
they will let go of the mouse button and a nice little square will
appear on the map where they
have selected.
Just use onMouseDown and onMouseUp handlers for the movieclip that
contains your map. Record the _xmouse and _ymouse at each event. Those
are the diametric corners of your new selection. Here's a bit of
pseudocode, which is not actionscript and won't work, but gives you the
idea:
var startX, startY, endX, endY;
map.onMouseDown
{
startX = _xmouse;
startY = _ymouse;
}
map.onMouseUp
{
endX = _xmouse;
endY = _ymouse;
drawSquare(startX, startY, endX, endY);
}
function drawSquare(startX, startY, endX, endY)
{
var squareMC = new MovieClip("squareGraphic");
squareMC._x = startX;
squareMC._y = startY;
squareMC._width = endX - startX;
squareMC._height = endY - startY;
}
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