Re: [PyOpenGL-Users] problems with glMap1f in pyopengl2

[Ralph G. <ral...@em...>]

I am happy that you are there right now. This might save my weekend! (-;
Anyway, I just hacked together an impressive example script. One for 
the old version which works fine and one for the new version.
I hope I didn't make any stupid mistakes.


PyGL 1.5.7:


#!/usr/bin/env python
import string, sys
from OpenGL.GL import *
from OpenGL.GLUT import *

def display(*args):
     glClearColor(0.0, 0.0, 0.0, 0.0)
     glClear(GL_COLOR_BUFFER_BIT)
     glColor3f(1.0,1.0,1.0)
     glLineWidth(4.0)
     curve=[0.0,0.0,0.0,0.0,1.0,0.0,0.0,1.0,0.0,1.0,1.0,0.0]
     glMap1f(GL_MAP1_VERTEX_3, 0.0, 1.0, 3, 4, curve)
     glEnable(GL_MAP1_VERTEX_3)
     glBegin(GL_LINE_STRIP)
     for i in range(0,30,1):
         glEvalCoord1f(i/30.0)
     glEnd()
     glDisable(GL_MAP1_VERTEX_3)
     glFlush()


def setup_viewport():
     glMatrixMode(GL_PROJECTION)
     glLoadIdentity()
     glOrtho(-1.0, 2.0, -1.0, 2.0, -1.0, 2.0)

def reshape(w, h):
     glViewport(0, 0, w, h)
     setup_viewport()

def main():
     glutInit('foo')
     glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB)
     glutInitWindowSize(300, 300)
     glutCreateWindow('Test')
     setup_viewport()
     glutSetReshapeFuncCallback(reshape)
     glutReshapeFunc()
     glutSetDisplayFuncCallback(display)
     glutDisplayFunc()
#    glutSetIdleFuncCallback(display)
#    glutIdleFunc()
     glutMainLoop()

main()



PyGL 2.0.1.07:

#!/usr/bin/env python
import string, sys
from OpenGL.GL import *
from OpenGL.GLUT import *

def display(*args):
     glClearColor(0.0, 0.0, 0.0, 0.0)
     glClear(GL_COLOR_BUFFER_BIT)
     glColor3f(1.0,1.0,1.0)
     glLineWidth(4.0)
     curve=[[0.0,0.0,0.0],[0.0,1.0,0.0],[0.0,1.0,0.0],[1.0,1.0,0.0]]
     glMap1f(GL_MAP1_VERTEX_3, 0.0, 1.0, curve)
     glEnable(GL_MAP1_VERTEX_3)
     glBegin(GL_LINE_STRIP)
     for i in range(0,30,1):
         glEvalCoord1f(i/30.0)
     glEnd()
     glDisable(GL_MAP1_VERTEX_3)
     glFlush()


def setup_viewport():
     glMatrixMode(GL_PROJECTION)
     glLoadIdentity()
     glOrtho(-1.0, 2.0, -1.0, 2.0, -1.0, 2.0)

def reshape(w, h):
     glViewport(0, 0, w, h)
     setup_viewport()

def main():
     glutInit(sys.argv)
     glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB)
     glutInitWindowSize(300, 300)
     glutCreateWindow('Test')
     setup_viewport()
     glutReshapeFunc(reshape)
     glutDisplayFunc(display)
     glutMainLoop()

main()