Hello
On Saturday 06 March 2004 08:12, you wrote:
> I have any given scene to me in 3D...i want to use the mouse to click on
> some place on the scene and find out the cordinates of the clicked points.
(You will run into problems with capabilities)
1. create a mouse listener class by implementing
(java.awt.event.MouseListener),
2. register an instance of your mouse-listener as mouselistener to the
canvas3d-Object. (canvas.addMouseListener(....))
3. within mouseClicked(mouseEvent ev) method you have to use an Instance of
com.sun.j3d.utils.picking.PickCanvas:
setup:
PickCanvas pickCanvas = new PickCanvas(canvas, scene);
pickCanvas.setMode(PickTool.GEOMETRY_INTERSECT_INFO);
pickCanvas.setTolerance(4.0f); //or less ?
use:
pickCanvas.setShapeLocation(ev);
PickResult[] results = pickCanvas.pickAll(); //pickclosets, pickAny... ?
For each valid PickResult:
for (int j=0;j<PK[i].numIntersections();j++){
PickinterSection PKS = PK.getIntersection(j);
//use any of:
PKS.getClosestVertexCoordinates();
PKS.getClosestVertexCoordinatesWM();
PKS.getPointCoordinates();
PKS.getPointCoordinatesWM()
}
You will have to set a shitload of capabilities on ALL pickable nodes (in
scene, see setup) to get this up and working. Some i can think of right now
are:
GeometryArray:
ALLOW_COUNT_READ
ALLOW_COORDINATE_READ
ALLOW_FORMAT_READ
there may be more.
cu
Gilson Laurent
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