I found issues with the gluUnProject as well. I wrote a new one for my own app (The Gube) and it works very well. I use gluUnproject for tracking 2D finger-touches and flings into the 3D model-view/space.
You can do a gluUnproject search on this forum and you will find this: http://groups.google.com/group/android-developers/browse_frm/thread/9d2bf53e3a798cb6/07cfa3ee11507fc1?lnk=gst&q=gluunproject#07cfa3ee11507fc1 Go to message# 8, which contiains the source control. On Feb 5, 7:18 pm, Tim Newsham <tim.news...@gmail.com> wrote: > Hi, I'm having problems with gluUnProject. I saw other discussions on > this message base regarding this function and they did not solve my > problem. When I use GLU.gluUnProject I get values that are close, but > not quite right. I'm manually keeping track of my model matrix and I > replicate the projection matrix manually. (I have also tried setting > the projection matrix to identity and manually incorporating a > projection matrix into my model matrix, and I ended up with the same > results). I tried using the builtin GLU.gluUnProject function and I > also implemented my own based on reading that source and reading the C > GLU sources and both seemed to give substantially similar results. > > So I put together a small demo, trying to keep it as minimal as > possible and still get the point across. Either this demo shows a > misunderstanding I have of gluUnProject or it shows a bug in the > function or opengl projections. Can someone check this over and see if > I'm just doing something wrong or if there's a bug that needs to be > filed? > > The files are here:http://www.thenewsh.com/~newsham/unproj/ > In particular: > > unproj.java - full source to example > unproj-debug.apk - resulting apk file > unproj - directory with full ant-buildable project > unproj.zip - zip of directory > > Tim -- 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
