Hi, I might be wrong but I think you can create an orthographic projection matrix for this purpose using Matrix.orthoM. Just provide it with top=0, bottom=height, left=0, right=width.
-- H On Aug 29, 2012, at 8:50 PM, guich <guiha...@gmail.com> wrote: > Hi, > > I downloaded and played with the opengl sample at > http://developer.android.com/training/graphics/opengl/draw.html > > However, it uses the standard coordinate system for opengl, where 0,0 > is at the center of the screen and -1,-1 at top-left and 1,1 at bottom- > right. > > I want to use the screen's coordinate, where 0,0 is at top-left and > width,height is at bottom-right. > > I already tried a dozen things, read about 30 articles, but since i'm > a newbie at opengl, i'm still stumped. > > Can someone tell what it has to be done to change the coordinate so > that the given rectangle > > static float squareCoords[] = { 10f, 10f, 0.0f, // top left > 10f, 20f, 0.0f, // bottom left > 20f, 20f, 0.0f, // bottom right > 20f, 10f, 0.0f }; // top right > > ... is shown at screen? > > thanks > > guich > > -- > 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 -- 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
