I was going to suggest doing what they outline in that lesson. In short - keep a rotation matrix for the current orientation of your cube. Process input and keep a rotation matrix that you apply the user input to, then multiply the cube matrix by and store the result as the cube matrix, then reset the input matrix to identity and start all over.
For user-space Z input rotation, you can do it like they do in the pro 3D apps - with a little button that shows that rotation to the left and to the right. Still use the same method as above, though, and you will get very predictable, nice rotation on all axis. On Sep 7, 11:39 am, alan <[email protected]> wrote: > your first stop for all opengl questions should be NeHe open gl > lessons:http://nehe.gamedev.net/data/lessons/lesson.asp?lesson=48 > > On Sep 6, 9:58 pm, Thiago Lopes Rosa <[email protected]> wrote: > > > > > This is a 3D Minesweeper. Instead of searching mines on that rectangular > > field, you must search them on several 3D fields (8 in total) by looking in > > all faces/planes. So you must rotate the objects to see all sides. (search > > for: *3D Mines*) > > > I got the idea about different movements for each axis, but I really wanted > > to use dragging for all axis. > > > Thanks, > > > Thiago > > > On Mon, Sep 6, 2010 at 17:42, Droid <[email protected]> wrote: > > > Suggest dragging for x, y and tapping for z axis movement. But its not > > > clear exactly what your end-game is.... > > > You could also use accelerometer for tipping (see Breakout Legend in > > > the App in mkt) > > > > :) Droid > > > > On Sep 6, 7:04 pm, Thiago Lopes Rosa <[email protected]> wrote: > > > > Hi, > > > > > I have a cube on the center of the screen and the user can rotate it > > > using > > > > the touchscreen. > > > > > The problem: > > > > For example, when I rotate the cube 180 degrees (vertical), the > > > horizontal > > > > rotation gets "inverted" (i mean, when moving right the cube rotates > > > > left > > > > and vice-versa). > > > > > The issue is that I'm using 2D coordinates (touchscreen) to rotate the > > > > 3D > > > > cube. > > > > I'm always rotating around the cube's X and Y axis and never around the > > > > Z > > > > axis. > > > > > The question is: > > > > How do I calculate how much and which axis to rotate from a 2D > > > > coordinate > > > > input? > > > > > Thanks, > > > > > Thiago > > > > -- > > > 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]<android-developers%2Bunsubs > > > [email protected]> > > > For more options, visit this group at > > >http://groups.google.com/group/android-developers?hl=en -- 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
