Re: [android-developers] Re: OpenGL - 3D rotation from a 2D input
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 thiago.r...@gmail.comwrote: Thanks! =) Thiago On Tue, Sep 7, 2010 at 14:25, Robert Green rbgrn@gmail.com 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 a...@birtles.org.uk 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 thiago.r...@gmail.com 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 rod...@gmail.com 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 thiago.r...@gmail.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.comandroid-developers%2Bunsubs cr...@googlegroups.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: OpenGL - 3D rotation from a 2D input
To switch to ES - Create an array of verts and normals and use those to replace the immediate mode drawing. You will need to replace the GLU sphere and torus creation with perhaps a known algorithm to create them - or if you can find a glut es implementation of those that would work too. On Sep 9, 4:11 pm, Thiago Lopes Rosa thiago.r...@gmail.com wrote: Lesson 48 ported to Java (still needs some OpenGL ES adjustments):http://www.java-tips.org/other-api-tips/jogl/arcball-rotation-nehe-tu... Thiago On Tue, Sep 7, 2010 at 21:04, Thiago Lopes Rosa thiago.r...@gmail.comwrote: Thanks! =) Thiago On Tue, Sep 7, 2010 at 14:25, Robert Green rbgrn@gmail.com 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 a...@birtles.org.uk 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 thiago.r...@gmail.com 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 rod...@gmail.com 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 thiago.r...@gmail.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2Bunsubs cr...@googlegroups.comandroid-developers%2Bunsubs cr...@googlegroups.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2Bunsubs cr...@googlegroups.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: OpenGL - 3D rotation from a 2D input
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 thiago.r...@gmail.com 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 rod...@gmail.com 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 thiago.r...@gmail.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: OpenGL - 3D rotation from a 2D input
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 a...@birtles.org.uk 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 thiago.r...@gmail.com 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 rod...@gmail.com 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 thiago.r...@gmail.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2Bunsubs cr...@googlegroups.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: OpenGL - 3D rotation from a 2D input
Thanks! =) Thiago On Tue, Sep 7, 2010 at 14:25, Robert Green rbgrn@gmail.com 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 a...@birtles.org.uk 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 thiago.r...@gmail.com 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 rod...@gmail.com 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 thiago.r...@gmail.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.comandroid-developers%2Bunsubs cr...@googlegroups.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: OpenGL - 3D rotation from a 2D input
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 thiago.r...@gmail.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: OpenGL - 3D rotation from a 2D input
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 rod...@gmail.com 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 thiago.r...@gmail.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
