Dear Java3d users I have a Canvas3d object which has a pixel x and pixel y position (say a mouse click) for which I'm interested in finding my data value. To explain, I've put into my 3d model only PointArray objects whose coordinate values are between -2000.0 and 2000.0 on any of the three axis. The actual data isn't important, what is important is that I have data whose x coordinates can range from -2000.0 to 2000.0. As well as the Y and the Z data. Assume that at least some of my data, but not all, shows up in the view (good field of view, translation, rotation, scale, etc.). Now all I want to do is supply a (valid for my canvas) pixel X and Y and get back a Point3d which indicates what value the pixel X and Y are in my data's coordinate system. Thus I need to get back something like 233.0, -1387.0, 345.0. Can somebody get me over this hump in the road. I need a "complete solution" that works from beginning to end. I've tried the following: TransformGroup vp_trans = null; .... Point3d position = new Point3d ( ); canvas.getPixelLocationInImagePlate(pixel_x, pixel_y, position); Transform3D ctf = new Transform3D(); vp_trans.getTransform ( ctf ); canvas.getImagePlateToVworld( ctf ); ctf.transform(position_b); but the values of position.x and position.y always are between -1.0 and 1.0, with 0.0 always being at the center of the canvas. Do I need to multiply these returned values by something? Thanks in advance, Gregory Bradford
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