Fabrice just mentioned something interesting to me... If you normalize the rotations of an object you might get the direction versor for it...?
Try it out, it could work, it would be something like this: var rots:Number3D = new Number3D(obj.rotationX, obj.rotationY, obj.rotationZ); rots.normalize(); On Sat, Feb 7, 2009 at 2:41 PM, Li <[email protected]> wrote: > Patrick, > > As ben said, if the "direction" vector you are referring to is -where the > object is pointing towards- and when you are moving the objects you are > making sure that the objects look in the direction of the motion, you are > talking about the velocity vector of the objects, which is the derivative of > the object's position in time. > > I guess you could obtain this by analyzing the objects current position > with it's previous one and obtaining a differential vector, or you could > also do something with the object's rotationX, Y and Z values to extract the > information from there... > > > On Sat, Feb 7, 2009 at 8:19 AM, ben <[email protected]> wrote: > >> >> Hi ! >> by "direction", do you want the angle to the point the object is >> looking at, >> or do you mean the vector of it's movement. >> >> If (your question == the second) >> how do you manage object's movement ? >> This can help you find it if you can get each step position of the >> object. >> >> >"This describes the absolute position in the coordinate system as well >> as the vector starting at [0,0,0] and ending at the Number3D. " >> your right but you have to normalize it if you want to use it. > > >
