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"""Test simple functions (i.e. no pointers involved)"""
from __future__ import print_function
import sys
from OpenGL.GL import *
from OpenGL.GLU import *
from OpenGL.GLUT import *
from OpenGL._bytes import as_8_bit
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(0.2)
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 < 2:
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:
sys.stdout.write("OK\n")
sys.stdout.flush()
glutDestroyWindow(window)
try:
if fgDeinitialize:
fgDeinitialize(False)
except NameError:
pass # Older PyOpenGL, you may see a seg-fault here...
os._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(as_8_bit("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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