On Jan 3, 11:50 am, Adeola Bannis <[EMAIL PROTECTED]> wrote: > Hi everyone, > > I'm doing a project using wxPython and pyopengl, and I seem to have a > problem rendering textures. This is code that worked before my hard > drive had a meltdown, but not since I re-installed everything. > > I've determined the problem is in the OpenGL part of my program. I do > some calculations to generate a 2D numpy array that holds the image > data, and pylab.imshow() shows me the image as it is meant to be. I > used the same algorithm in Octave and MATLAB, and all are giving me > the right picture. > > However, using pyOpenGL and the numpyhandler functions (http://cours- > info.iut-bm.univ-fcomte.fr/docs/python/OpenGL/ > OpenGL.arrays.numpymodule.NumpyHandler-class.html) doesn't seem to > work. I get a garbled screen pocked with black pixels. I am including > my openGL code below. What am I doing wrong? > > And yes, I did make the dtype of my array 'float32'. > > -------code snippets------ > > import wx > from wx.glcanvas import GLCanvas > > from OpenGL.GLU import * > from OpenGL.GL import * > from OpenGL.arrays.numpymodule import NumpyHandler > > PC = 1 > RI = 0 > > class myGLCanvas(GLCanvas): > def __init__(self, parent): > GLCanvas.__init__(self, parent,-1) > wx.EVT_PAINT(self, self.OnPaint) > self.init = 0 > self.mode = -1 > # making a texture for the range image > self.texture = glGenTextures(1) > # making a spot for the point cloud points > self.cloud = None > return > > def OnPaint(self,event): > dc = wx.PaintDC(self) > self.SetCurrent() > if not self.init: > self.InitGL() > self.init = 1 > self.OnDraw() > return > > def OnDraw(self): > glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) > if self.mode == RI: > self.drawRange() > elif self.mode == PC: > self.drawCloud() > > def InitGL(self): > glClearColor(0.0, 0.0, 0.0, 0.0); > glClearDepth(1.0) > glEnable(GL_DEPTH_TEST) > glDepthFunc(GL_LEQUAL) > glClear(GL_COLOR_BUFFER_BIT) > > glPixelStorei(GL_UNPACK_ALIGNMENT, 1) > glPixelStorei(GL_PACK_ALIGNMENT, 1) > > #NTSC colour scales... > glPixelTransferf(GL_RED_SCALE, 0.299); > glPixelTransferf(GL_GREEN_SCALE, 0.587); > glPixelTransferf(GL_BLUE_SCALE, 0.114); > > glMatrixMode(GL_PROJECTION) > glLoadIdentity() > glOrtho(0.0,1.0,0,1.0,-1.0,1.0) > glMatrixMode(GL_MODELVIEW) > glLoadIdentity() > > return > > def rangeImage(self, image): > > glBindTexture(GL_TEXTURE_2D, self.texture) > glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) > > glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, > GL_LINEAR) > glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, > GL_LINEAR) > glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT) > glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT) > > # flatten it into a list so the OpenGL calls work > n = NumpyHandler() > fI = image.flatten() > flatImage = n.dataPointer(n.contiguous(fI)) > > print n.contiguous(fI) > > gluBuild2DMipmaps(GL_TEXTURE_2D, 1, image.shape[0]+1, > image.shape[1]+1, > GL_LUMINANCE, > GL_FLOAT, flatImage) > self.mode = RI > self.OnDraw() > > def drawRange(self): > ''' Controls the actual drawing of the range image''' > > glMatrixMode(GL_MODELVIEW) > glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) > > glColor3f(1.0,1.0,1.0) > glEnable(GL_TEXTURE_2D) > glBindTexture(GL_TEXTURE_2D, self.texture) > glBegin(GL_TRIANGLE_FAN) > glTexCoord2d(1,1); glVertex3f(0.0, 0.0, 0.0) > glTexCoord2d(1,0); glVertex3f(0.0, 1.0, 0.0) > glTexCoord2d(0,0); glVertex3f(1.0, 1.0, 0.0) > glTexCoord2d(0,1); glVertex3f(1.0, 0.0, 0.0) > glEnd() > self.SwapBuffers() > > --------end snippet-----------
I've never messed with pyOpenGL, but it seems that they have their own user's group, which would probably be better at answering your question: http://sourceforge.net/mail/?group_id=5988 Of course, it could be that you upgraded your wxPython to the latest version and as I recall, they were discussing some subtle differences in DCs, blitting, paint events and other things that I just don't understand at this point in my "Pythoneering". You might ask them at their group, which is usually very helpful: wxPython.org Mike -- http://mail.python.org/mailman/listinfo/python-list
