#!/usr/bin/env python
# Demonstration of the shaderProgram:
# Animated torus with procedural texture.
#
# Class to simplify the incorporation of GLSL programs.
#
# Copyright (C) 2007 "Peter Roesch" <Peter.Roesch@fh-augsburg.de>
#
# This code is licensed under the PyOpenGL License.
# Details are given in the file license.txt included in this distribution.
#import OpenGL
#OpenGL.FULL_LOGGING = True
import sys
from shaderProg import ShaderProgram
try:
from OpenGL.GLUT import *
from OpenGL.GL import *
from OpenGL.GLU import *
from OpenGL.GL.ARB.shader_objects import *
from OpenGL.GL.ARB.fragment_shader import *
from OpenGL.GL.ARB.vertex_shader import *
except:
print ''' Fehler: PyOpenGL nicht intalliert !!'''
sys.exit( )
frameRate = 25
time = 0.0
from time import sleep
def animationStep( ):
"""Update animated parameters."""
global frameRate
global time
time+=0.05
global sP
if sP and sP.enable():
glUseProgramObjectARB( 1L )
glUniform1fARB( sP.indexOfUniformVariable("Time"), time )
sleep( 1 / float( frameRate ) )
glutPostRedisplay( )
def display( ):
"""Glut display function."""
if not torusList:
init()
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT )
glMatrixMode( GL_PROJECTION )
glLoadIdentity( )
xSize, ySize = glutGet( GLUT_WINDOW_WIDTH ), glutGet( GLUT_WINDOW_HEIGHT )
gluPerspective(60, float(xSize) / float(ySize), 0.1, 50)
glMatrixMode( GL_MODELVIEW )
glLoadIdentity( )
glTranslatef( 0, 0, -4 )
glRotatef( 130, 1, 0, 0 )
glCallList( torusList )
glutSwapBuffers( )
sP = None
def initShaders( ):
"""Initialise shaderProg object."""
global sP
sP = ShaderProgram( )
sP.addShader( GL_VERTEX_SHADER_ARB, "brick.vert" )
sP.addShader( GL_FRAGMENT_SHADER_ARB, "brick.frag" )
sP.linkShaders( )
sP.enable( )
glUniform1fARB( sP.indexOfUniformVariable("Amplitude"), 0.3)
glUniform3fvARB( sP.indexOfUniformVariable("LightPosition"), 1, \
(0.0, 0.0, 3.0) )
glUniform3fvARB( sP.indexOfUniformVariable("BrickColor"), 1, \
(1.0, 0.3, 0.2) )
glUniform3fvARB( sP.indexOfUniformVariable("MortarColor"), 1, \
(0.85, 0.86, 0.84) )
glUniform2fvARB( sP.indexOfUniformVariable("BrickSize"), 1, \
(0.3, 0.15) )
glUniform2fvARB( sP.indexOfUniformVariable("BrickPct"), 1, \
(0.9, 0.85) )
torusList = None
def init( ):
"Glut init function."""
glClearColor ( 0.3, 0.3, 0.3, 1 )
glEnable( GL_DEPTH_TEST )
glShadeModel( GL_SMOOTH )
global torusList
torusList = glGenLists( 1 )
glNewList( torusList, GL_COMPILE )
glutSolidTorus(0.5, 1, 40, 50);
glEndList( )
initShaders( )
def main():
import logging
logging.basicConfig()
glutInit( sys.argv )
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH )
glutInitWindowSize( 250, 250 )
glutInitWindowPosition( 100, 100 )
glutCreateWindow( sys.argv[0] )
glutDisplayFunc( display )
glutIdleFunc( animationStep )
glutMainLoop( )
if __name__ == "__main__":
main()
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