isn't exist a easiest way to do it...? i think i need a little help with that algorithm
On Nov 8, 4:03 pm, Streets Of Boston <[email protected]> wrote: > In your 3D model, you have two Z values (for depth). Z-near (the 'location' > of your screen) and Z-far (the furthest z-plane of your 3D model). > The user touches the screen and Xs, Ys. > > Now call gluUnProject twice: > gluUnProject(xWin, ((float)screenH)-yWin, *zNear*, modelMatrix, 0, > projMatrix, 0, mView, 0, *outputCoordsNear*, 0); > gluUnProject(xWin, ((float)screenH)-yWin, *zFar*, modelMatrix, 0, > projMatrix, 0, mView, 0, *outputCoordsFar*, 0); > > Now you have a *line *in your 3D model that starts at your screen > 'outputCoordsNear' and ends at 'outputCoordsFar' > Dust off your geometry-class' books and figure out how to move your Square > so that (the center of) it will intersect with this line. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
