I had similar issues: - Where to obtain the model-view and the project-view matrices. - gluUnProject did not seem to work... it returned results i did not expect.
I solved these issues: - I borrowed code from the MatrixGrabber.java you can find in the "API Demos" examples. This class contains methods to obtain the project and model view matrices. - I wrote my own gluUnProject, based upon a C-implementation i found on the internet. Goto http://soft.antonspaans.com and leave me a message there and i can send you the java source code for gluUnProject. On Feb 24, 8:10 pm, focuser <linto...@gmail.com> wrote: > Hi, > > I'm trying to convert window coordinates to object coordinates. > There's a gluUnProject in GLU class, which requires current modelview, > projection matrices and viewport. > > My question is how to get those matrices? I tried gl.glGetIntegerv > (GL11.GL_MODELVIEW_MATRIX_FLOAT_AS_INT_BITS_OES, model, 0); and > ((GL11) gl).glGetFloatv(GL11.GL_MODELVIEW_MATRIX, modelf, 0); > > but the first one returns an array of zeros, and the other one just > shows an "method not implemented" error. > > Is gluUnProject the correct method for this purpose (i.e. window > coordinates --> object coordinates) ? --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
