Lesson 48 ported to Java (still needs some OpenGL ES adjustments): http://www.java-tips.org/other-api-tips/jogl/arcball-rotation-nehe-tutorial-jogl-port.html
Thiago On Tue, Sep 7, 2010 at 21:04, Thiago Lopes Rosa <[email protected]>wrote: > Thanks! =) > > > > Thiago > > > On Tue, Sep 7, 2010 at 14:25, Robert Green <[email protected]> wrote: > >> 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%[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]<android-developers%[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
