pyopengl

I am creating a first-person view RPG and I want to rotate the camera in PyOpenGL when I move the mouse (just like some other games like Minecraft). What function can I use to do this and how? I tried to use gluLookAt() but I don't understand how it works although I went through different sources. I don't even know if it can help. import sys,pygame from OpenGL.GL import * from OpenGL.GLU import * cmddown = False #... keypress = pygame.key.get_pressed()#Move using WASD if keypress[pygame.K_w]: glTranslatef(0,0,0.1) if keypress[pygame.K_s]: glTranslatef(0,0,-0.1) if keypress[pygame.K_d]:

I'm trying to pick a 3d point. I read various sites but my code doesn't work. on right mouse click: glGetFloatv(GL_MODELVIEW_MATRIX,mv_mat) glGetFloatv(GL_PROJECTION_MATRIX,p_mat) ip_mat = np.linalg.inv(mat4(p_mat)) # clip = array[ # (2*x)/window_width-1 # 1-(y*2)/window.height # -1 # 1 camera_coord = np.dot(ip_mat,clip) camera_coord = np.array([camera_coord[0,0],camera_coord[0,1],-1,0]) imv_mat = np.linalg.inv(mat4(mv_mat)) ray_world = np.dot(imv_mat,camera_coord) ray_world = np.array([ray_world[0],ray_world[1],ray_world[2]]) ray_world = ray_world/np.linalg.norm(ray_world) Intersect_sphere

I'm new to Python and PIL. I am trying to follow code samples on how to load an image into to Python through PIL and then draw its pixels using openGL. Here are some line of the code: from Image import * im = open("gloves200.bmp") pBits = im.convert('RGBA').tostring() ..... glDrawPixels(200, 200, GL_RGBA, GL_UNSIGNED_BYTE, pBits) This will draw a 200 x 200 patch of pixels on the canvas. However, it is not the intended image-- it looks like it is drawing pixels from random memory. The random memory hypothesis is supported by the fact that I get the same pattern even when I attempt to draw

I'm trying to copy vertex data from a texture to a vertex buffer, and then draw the vertex buffer. As far as I know the best way to do this is to bind the texture to a fbo, and use glReadPixels to copy it to a vbo. However, I can't seem to get this working: glReadPixels fails with the error "invalid operation". Corrections, examples and alternate methods welcome. :) Here's the relevant code: glEnable(GL_TEXTURE_2D) w, h = 32, 32 vbo = glGenBuffers(1) glBindBuffer(GL_ARRAY_BUFFER, vbo) glBufferData(GL_ARRAY_BUFFER, sizeof(c_float)*w*h*4, None, GL_STREAM_COPY) glBindBuffer(GL_ARRAY_BUFFER, 0)

My vertices are interleaved in a numpy array (dtype = float32) like this: ... tu, tv, nx, ny, nz, vx, vy, vz, ... When rendering, I'm calling gl*Pointer() like this (I have enabled the arrays before): stride = (2 + 3 + 3) * 4 glTexCoordPointer( 2, GL_FLOAT, stride, self.vertArray ) glNormalPointer( GL_FLOAT, stride, self.vertArray + 2 ) glVertexPointer( 3, GL_FLOAT, stride, self.vertArray + 5 ) glDrawElements( GL_TRIANGLES, len( self.indices ), GL_UNSIGNED_SHORT, self.indices ) The result is that nothing renders. However, if I organize my array so that the vertex position is the first element

So, I only know how to use Python, but I also know how to model in 3d. I've heard of OpenGL and I really want to learn how to use, because it seems very useful (I want to create simple games with it...). I found PyOpenGL, Python bindings for OpenGL, but I couldn't find any "real" documentation, so the only option is to study code examples and tutorials written in C++ or something. But, as I said, I only know how to use Python. What can I do about that? You should go on and read a OpenGL tutorial . Here's a pyopengl demo ; other samples are over here . Also, you can use pygame together with