gutil.py

   1
   2 import pygame
   3
   4 from OpenGL.GL import *
   5 from OpenGL.GLU import *
   6
   7 def init(w, h):
   8     pygame.init()
   9     pygame.display.set_mode((w,h), pygame.OPENGL|pygame.DOUBLEBUF|pygame.FULLSCREEN)
  10 #    pygame.display.set_mode((w,h),pygame.OPENGL|pygame.DOUBLEBUF)
  11
  12     glClearColor(0.0, 0.0, 0.0, 1.0)
  13     glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT)
  14
  15     glMatrixMode(GL_PROJECTION);
  16     glLoadIdentity();
  17     gluOrtho2D(0, w, 0, h);
  18     glMatrixMode(GL_MODELVIEW);
  19
  20     #set up texturing
  21     glEnable(GL_TEXTURE_2D)
  22     glEnable(GL_BLEND);
  23     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
  24
  25
  26 def load_image(image):
  27     textureSurface = pygame.image.load(image)
  28
  29     textureData = pygame.image.tostring(textureSurface, "RGBA", 1)
  30
  31     width = textureSurface.get_width()
  32     height = textureSurface.get_height()
  33
  34     texture = glGenTextures(1)
  35     glBindTexture(GL_TEXTURE_2D, texture)
  36     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
  37     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
  38     glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, textureData )
  39
  40     return texture, width, height
  41
  42
  43 def delTexture(texture):
  44     glDeleteTextures(texture)
  45
  46
  47 def createTexDL(texture, width, height):
  48     newList = glGenLists(1)
  49     glNewList(newList,GL_COMPILE);
  50     glBindTexture(GL_TEXTURE_2D, texture)
  51     glBegin(GL_QUADS)
  52     glTexCoord2f(0, 0); glVertex2f(0, 0)    # Bottom Left Of The Texture and Quad
  53     glTexCoord2f(0, 1); glVertex2f(0, height)    # Top Left Of The Texture and Quad
  54     glTexCoord2f(1, 1); glVertex2f( width,  height)    # Top Right Of The Texture and Quad
  55     glTexCoord2f(1, 0); glVertex2f(width, 0)    # Bottom Right Of The Texture and Quad
  56     glEnd()
  57     glEndList()
  58
  59     return newList
  60
  61 def create_texture(image):
  62     textureSurface = pygame.image.load(image)
  63
  64     textureData = pygame.image.tostring(textureSurface, "RGBA", 1)
  65
  66     width = textureSurface.get_width()
  67     height = textureSurface.get_height()
  68
  69     texture = glGenTextures(1)
  70     glBindTexture(GL_TEXTURE_2D, texture)
  71     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
  72     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
  73     glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, textureData )
  74
  75     newList = glGenLists(1)
  76     glNewList(newList,GL_COMPILE);
  77     glBindTexture(GL_TEXTURE_2D, texture)
  78     glBegin(GL_QUADS)
  79     glTexCoord2f(0, 0); glVertex2f(0, 0)    # Bottom Left Of The Texture and Quad
  80     glTexCoord2f(0, 1); glVertex2f(0, height)    # Top Left Of The Texture and Quad
  81     glTexCoord2f(1, 1); glVertex2f( width,  height)    # Top Right Of The Texture and Quad
  82     glTexCoord2f(1, 0); glVertex2f(width, 0)    # Bottom Right Of The Texture and Quad
  83     glEnd()
  84     glEndList()
  85
  86     return newList
  87
  88
  89
  90 def delDL(list):
  91     glDeleteLists(list, 1)