# pygame / examples / glcube.py

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109``` ```#!/usr/bin/env python """Draw a cube on the screen. every frame we orbit the camera around by a small amount and it appears the object is spinning. note i've setup some simple data structures here to represent a multicolored cube, we then go through a semi-unopimized loop to draw the cube points onto the screen. opengl does all the hard work for us. :] """ import pygame from pygame.locals import * try: from OpenGL.GL import * from OpenGL.GLU import * except: print ('The GLCUBE example requires PyOpenGL') raise SystemExit #some simple data for a colored cube #here we have the 3D point position and color #for each corner. then we have a list of indices #that describe each face, and a list of indieces #that describes each edge CUBE_POINTS = ( (0.5, -0.5, -0.5), (0.5, 0.5, -0.5), (-0.5, 0.5, -0.5), (-0.5, -0.5, -0.5), (0.5, -0.5, 0.5), (0.5, 0.5, 0.5), (-0.5, -0.5, 0.5), (-0.5, 0.5, 0.5) ) #colors are 0-1 floating values CUBE_COLORS = ( (1, 0, 0), (1, 1, 0), (0, 1, 0), (0, 0, 0), (1, 0, 1), (1, 1, 1), (0, 0, 1), (0, 1, 1) ) CUBE_QUAD_VERTS = ( (0, 1, 2, 3), (3, 2, 7, 6), (6, 7, 5, 4), (4, 5, 1, 0), (1, 5, 7, 2), (4, 0, 3, 6) ) CUBE_EDGES = ( (0,1), (0,3), (0,4), (2,1), (2,3), (2,7), (6,3), (6,4), (6,7), (5,1), (5,4), (5,7), ) def drawcube(): "draw the cube" allpoints = zip(CUBE_POINTS, CUBE_COLORS) glBegin(GL_QUADS) for face in CUBE_QUAD_VERTS: for vert in face: pos, color = allpoints[vert] glColor3fv(color) glVertex3fv(pos) glEnd() glColor3f(1.0, 1.0, 1.0) glBegin(GL_LINES) for line in CUBE_EDGES: for vert in line: pos, color = allpoints[vert] glVertex3fv(pos) glEnd() def main(): "run the demo" #initialize pygame and setup an opengl display pygame.init() pygame.display.set_mode((640,480), OPENGL|DOUBLEBUF) glEnable(GL_DEPTH_TEST) #use our zbuffer #setup the camera glMatrixMode(GL_PROJECTION) gluPerspective(45.0,640/480.0,0.1,100.0) #setup lens glTranslatef(0.0, 0.0, -3.0) #move back glRotatef(25, 1, 0, 0) #orbit higher while 1: #check for quit'n events event = pygame.event.poll() if event.type == QUIT or (event.type == KEYDOWN and event.key == K_ESCAPE): break #clear screen and move camera glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT) #orbit camera around by 1 degree glRotatef(1, 0, 1, 0) drawcube() pygame.display.flip() pygame.time.wait(10) if __name__ == '__main__': main() ```
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