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"""Test simple functions (i.e. no pointers involved)"""
from OpenGL.GL import *
from OpenGL.GLU import *
from OpenGL.GLUT import *
import time
start = time.time()
window = None
def drawText( value, x,y, windowHeight, windowWidth, step = 18 ):
"""Draw the given text at given 2D position in window
"""
glMatrixMode(GL_PROJECTION);
# For some reason the GL_PROJECTION_MATRIX is overflowing with a single push!
# glPushMatrix()
matrix = glGetDouble( GL_PROJECTION_MATRIX )
glLoadIdentity();
glOrtho(0.0, windowHeight or 32, 0.0, windowWidth or 32, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glRasterPos2i(x, y);
lines = 0
for character in value:
if character == '\n':
glRasterPos2i(x, y-(lines*18))
else:
glutBitmapCharacter(GLUT_BITMAP_HELVETICA_18, ord(character));
glPopMatrix();
glMatrixMode(GL_PROJECTION);
# For some reason the GL_PROJECTION_MATRIX is overflowing with a single push!
# glPopMatrix();
glLoadMatrixd( matrix ) # should have un-decorated alias for this...
glMatrixMode(GL_MODELVIEW);
def display():
glutSetWindow(window);
glClearColor (0.0, 0.0, (time.time()%1.0)/1.0, 0.0)
glClear (GL_COLOR_BUFFER_BIT)
drawText( 'hello', 20,20, size[0],size[1] )
#glutBitmapCharacter( GLUT_BITMAP_8_BY_13, ord('a'))
glutSolidTeapot( .2 )
glFlush ()
glutSwapBuffers()
size = (250,250)
def reshape( *args ):
global size
size = args
glViewport( *( (0,0)+args) )
display()
def ontimer( *args ):
print 'timer', args, '@time', time.time()-start
glutTimerFunc( 1000, ontimer, 24 )
def idle():
delta = time.time()-start
if delta < 10:
global size
x,y = size
if delta < 5:
change = +1
else:
change = -1
x = x-change
y = y+change
if x < 1:
x = 1
if y < 1:
y = 1
glutReshapeWindow( x, y )
size = (x,y)
glutSetWindow(window)
glutPostRedisplay()
else:
glutDestroyWindow( window )
print 'window destroyed'
import sys
sys.exit( 0 )
def printFunction( name ):
def onevent( *args ):
print '%s -> %s'%(name, ", ".join( [str(a) for a in args ]))
return onevent
if __name__ == "__main__":
import sys
newArgv = glutInit(sys.argv)
print 'newArguments', newArgv
glutInitDisplayMode( GLUT_DOUBLE | GLUT_RGB )
glutInitWindowSize(250, 250)
glutInitWindowPosition(100, 100)
window = glutCreateWindow("hello")
print 'window', repr(window)
glutDisplayFunc(display)
glutReshapeFunc(reshape)
glutMouseFunc(printFunction( 'Mouse' ))
glutEntryFunc(printFunction( 'Entry' ))
glutKeyboardFunc( printFunction( 'Keyboard' ))
glutKeyboardUpFunc( printFunction( 'KeyboardUp' ))
glutMotionFunc( printFunction( 'Motion' ))
glutPassiveMotionFunc( printFunction( 'PassiveMotion' ))
glutVisibilityFunc( printFunction( 'Visibility' ))
glutWindowStatusFunc( printFunction( 'WindowStatus' ))
glutSpecialFunc( printFunction( 'Special' ))
glutSpecialUpFunc( printFunction( 'SpecialUp' ))
glutTimerFunc( 1000, ontimer, 23 )
glutIdleFunc( idle )
glutMainLoop()
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